Most visited

Recently visited

Results for

Added in API level 1
Deprecated since API level 16

Gallery

public class Gallery
extends AbsSpinner implements GestureDetector.OnGestureListener

java.lang.Object
↳	android.view.View
	↳	android.view.ViewGroup
		↳	android.widget.AdapterView<android.widget.SpinnerAdapter>
			↳	android.widget.AbsSpinner
				↳	android.widget.Gallery

This class was deprecated in API level 16.
This widget is no longer supported. Other horizontally scrolling widgets include HorizontalScrollView and ViewPager from the support library.

A view that shows items in a center-locked, horizontally scrolling list.

The default values for the Gallery assume you will be using Theme_galleryItemBackground as the background for each View given to the Gallery from the Adapter. If you are not doing this, you may need to adjust some Gallery properties, such as the spacing.

Views given to the Gallery should use Gallery.LayoutParams as their layout parameters type.

Summary

Nested classes
`class`	`Gallery.LayoutParams` Gallery extends LayoutParams to provide a place to hold current Transformation information along with previous position/transformation info.

XML attributes
`android:animationDuration`	Sets how long a transition animation should run (in milliseconds) when layout has changed.
`android:gravity`	Specifies how an object should position its content, on both the X and Y axes, within its own bounds.
`android:spacing`
`android:unselectedAlpha`	Sets the alpha on the items that are not selected.

Inherited XML attributes

From class


  android.widget.AbsSpinner

From class


  android.view.ViewGroup

`android:addStatesFromChildren`	Sets whether this ViewGroup's drawable states also include its children's drawable states.
`android:alwaysDrawnWithCache`	Defines whether the ViewGroup should always draw its children using their drawing cache or not.
`android:animateLayoutChanges`	Defines whether changes in layout (caused by adding and removing items) should cause a LayoutTransition to run.
`android:animationCache`	Defines whether layout animations should create a drawing cache for their children.
`android:clipChildren`	Defines whether a child is limited to draw inside of its bounds or not.
`android:clipToPadding`	Defines whether the ViewGroup will clip its children and resize (but not clip) any EdgeEffect to its padding, if padding is not zero.
`android:descendantFocusability`	Defines the relationship between the ViewGroup and its descendants when looking for a View to take focus.
`android:layoutAnimation`	Defines the layout animation to use the first time the ViewGroup is laid out.
`android:layoutMode`	Defines the layout mode of this ViewGroup.
`android:persistentDrawingCache`	Defines the persistence of the drawing cache.
`android:splitMotionEvents`	Sets whether this ViewGroup should split MotionEvents to separate child views during touch event dispatch.

From class


  android.view.View

Inherited constants

From class


    android.widget.AdapterView

From class


    android.view.ViewGroup

From class


    android.view.View

Inherited fields

From class


    android.view.View

Public constructors
`Gallery(Context context)`
`Gallery(Context context, AttributeSet attrs)`
`Gallery(Context context, AttributeSet attrs, int defStyleAttr)`
`Gallery(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)`

Public methods
`boolean`	`dispatchKeyEvent(KeyEvent event)` Dispatch a key event to the next view on the focus path.
`void`	`dispatchSetSelected(boolean selected)` Dispatch setSelected to all of this View's children.
`ViewGroup.LayoutParams`	`generateLayoutParams(AttributeSet attrs)` Returns a new set of layout parameters based on the supplied attributes set.
`CharSequence`	`getAccessibilityClassName()` Return the class name of this object to be used for accessibility purposes.
`boolean`	`onDown(MotionEvent e)` Notified when a tap occurs with the down `MotionEvent` that triggered it.
`boolean`	`onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY)` Notified of a fling event when it occurs with the initial on down `MotionEvent` and the matching up `MotionEvent`.
`boolean`	`onKeyDown(int keyCode, KeyEvent event)` Handles left, right, and clicking
`boolean`	`onKeyUp(int keyCode, KeyEvent event)` Default implementation of `KeyEvent.Callback.onKeyUp()`: perform clicking of the view when `KEYCODE_DPAD_CENTER`, `KEYCODE_ENTER` or `KEYCODE_SPACE` is released.
`void`	`onLongPress(MotionEvent e)` Notified when a long press occurs with the initial on down `MotionEvent` that trigged it.
`boolean`	`onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY)` Notified when a scroll occurs with the initial on down `MotionEvent` and the current move `MotionEvent`.
`void`	`onShowPress(MotionEvent e)` The user has performed a down `MotionEvent` and not performed a move or up yet.
`boolean`	`onSingleTapUp(MotionEvent e)` Notified when a tap occurs with the up `MotionEvent` that triggered it.
`boolean`	`onTouchEvent(MotionEvent event)` Implement this method to handle touch screen motion events.
`void`	`setAnimationDuration(int animationDurationMillis)` Sets how long the transition animation should run when a child view changes position.
`void`	`setCallbackDuringFling(boolean shouldCallback)` Whether or not to callback on any `getOnItemSelectedListener()` while the items are being flinged.
`void`	`setGravity(int gravity)` Describes how the child views are aligned.
`void`	`setSpacing(int spacing)` Sets the spacing between items in a Gallery
`void`	`setUnselectedAlpha(float unselectedAlpha)` Sets the alpha of items that are not selected in the Gallery.
`boolean`	`showContextMenu()` Shows the context menu for this view.
`boolean`	`showContextMenu(float x, float y)` Shows the context menu for this view anchored to the specified view-relative coordinate.
`boolean`	`showContextMenuForChild(View originalView)` Shows the context menu for the specified view or its ancestors.
`boolean`	`showContextMenuForChild(View originalView, float x, float y)` Shows the context menu for the specified view or its ancestors anchored to the specified view-relative coordinate.

Protected methods
`boolean`	`checkLayoutParams(ViewGroup.LayoutParams p)`
`int`	`computeHorizontalScrollExtent()` Compute the horizontal extent of the horizontal scrollbar's thumb within the horizontal range.
`int`	`computeHorizontalScrollOffset()` Compute the horizontal offset of the horizontal scrollbar's thumb within the horizontal range.
`int`	`computeHorizontalScrollRange()` Compute the horizontal range that the horizontal scrollbar represents.
`void`	`dispatchSetPressed(boolean pressed)` Dispatch setPressed to all of this View's children.
`ViewGroup.LayoutParams`	`generateDefaultLayoutParams()` Returns a set of default layout parameters.
`ViewGroup.LayoutParams`	`generateLayoutParams(ViewGroup.LayoutParams p)` Returns a safe set of layout parameters based on the supplied layout params.
`int`	`getChildDrawingOrder(int childCount, int i)` Returns the index of the child to draw for this iteration.
`boolean`	`getChildStaticTransformation(View child, Transformation t)` Sets `t` to be the static transformation of the child, if set, returning a boolean to indicate whether a static transform was set.
`ContextMenu.ContextMenuInfo`	`getContextMenuInfo()` Views should implement this if they have extra information to associate with the context menu.
`void`	`onAttachedToWindow()` This is called when the view is attached to a window.
`void`	`onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect)` Called by the view system when the focus state of this view changes.
`void`	`onLayout(boolean changed, int l, int t, int r, int b)` Called from layout when this view should assign a size and position to each of its children.

Inherited methods

From class


  
    android.widget.AbsSpinner

`void`	`dispatchRestoreInstanceState(SparseArray<Parcelable> container)` Override to prevent thawing of any views created by the adapter.
`ViewGroup.LayoutParams`	`generateDefaultLayoutParams()` Returns a set of default layout parameters.
`CharSequence`	`getAccessibilityClassName()` Return the class name of this object to be used for accessibility purposes.
`SpinnerAdapter`	`getAdapter()` Returns the adapter currently associated with this widget.
`int`	`getCount()`
`View`	`getSelectedView()`
`void`	`onMeasure(int widthMeasureSpec, int heightMeasureSpec)` Measure the view and its content to determine the measured width and the measured height.
`void`	`onRestoreInstanceState(Parcelable state)` Hook allowing a view to re-apply a representation of its internal state that had previously been generated by `onSaveInstanceState()`.
`Parcelable`	`onSaveInstanceState()` Hook allowing a view to generate a representation of its internal state that can later be used to create a new instance with that same state.
`int`	`pointToPosition(int x, int y)` Maps a point to a position in the list.
`void`	`requestLayout()` Override to prevent spamming ourselves with layout requests as we place views
`void`	`setAdapter(SpinnerAdapter adapter)` The Adapter is used to provide the data which backs this Spinner.
`void`	`setSelection(int position, boolean animate)` Jump directly to a specific item in the adapter data.
`void`	`setSelection(int position)` Sets the currently selected item.

From class


  
    android.widget.AdapterView

`void`	`addView(View child, int index)` This method is not supported and throws an UnsupportedOperationException when called.
`void`	`addView(View child)` This method is not supported and throws an UnsupportedOperationException when called.
`void`	`addView(View child, ViewGroup.LayoutParams params)` This method is not supported and throws an UnsupportedOperationException when called.
`void`	`addView(View child, int index, ViewGroup.LayoutParams params)` This method is not supported and throws an UnsupportedOperationException when called.
`boolean`	`canAnimate()` Indicates whether the view group has the ability to animate its children after the first layout.
`void`	`dispatchRestoreInstanceState(SparseArray<Parcelable> container)` Override to prevent thawing of any views created by the adapter.
`void`	`dispatchSaveInstanceState(SparseArray<Parcelable> container)` Override to prevent freezing of any views created by the adapter.
`CharSequence`	`getAccessibilityClassName()` Return the class name of this object to be used for accessibility purposes.
`abstract SpinnerAdapter`	`getAdapter()` Returns the adapter currently associated with this widget.
`int`	`getCount()`
`View`	`getEmptyView()` When the current adapter is empty, the AdapterView can display a special view called the empty view.
`int`	`getFirstVisiblePosition()` Returns the position within the adapter's data set for the first item displayed on screen.
`Object`	`getItemAtPosition(int position)` Gets the data associated with the specified position in the list.
`long`	`getItemIdAtPosition(int position)`
`int`	`getLastVisiblePosition()` Returns the position within the adapter's data set for the last item displayed on screen.
`final AdapterView.OnItemClickListener`	`getOnItemClickListener()`
`final AdapterView.OnItemLongClickListener`	`getOnItemLongClickListener()`
`final AdapterView.OnItemSelectedListener`	`getOnItemSelectedListener()`
`int`	`getPositionForView(View view)` Returns the position within the adapter's data set for the view, where view is a an adapter item or a descendant of an adapter item.
`Object`	`getSelectedItem()`
`long`	`getSelectedItemId()`
`int`	`getSelectedItemPosition()` Return the position of the currently selected item within the adapter's data set
`abstract View`	`getSelectedView()`
`void`	`onDetachedFromWindow()` This is called when the view is detached from a window.
`void`	`onLayout(boolean changed, int left, int top, int right, int bottom)` Called from layout when this view should assign a size and position to each of its children.
`boolean`	`performItemClick(View view, int position, long id)` Call the OnItemClickListener, if it is defined.
`void`	`removeAllViews()` This method is not supported and throws an UnsupportedOperationException when called.
`void`	`removeView(View child)` This method is not supported and throws an UnsupportedOperationException when called.
`void`	`removeViewAt(int index)` This method is not supported and throws an UnsupportedOperationException when called.
`abstract void`	`setAdapter(SpinnerAdapter adapter)` Sets the adapter that provides the data and the views to represent the data in this widget.
`void`	`setEmptyView(View emptyView)` Sets the view to show if the adapter is empty
`void`	`setFocusable(boolean focusable)` Set whether this view can receive the focus.
`void`	`setFocusableInTouchMode(boolean focusable)` Set whether this view can receive focus while in touch mode.
`void`	`setOnClickListener(View.OnClickListener l)` Register a callback to be invoked when this view is clicked.
`void`	`setOnItemClickListener(AdapterView.OnItemClickListener listener)` Register a callback to be invoked when an item in this AdapterView has been clicked.
`void`	`setOnItemLongClickListener(AdapterView.OnItemLongClickListener listener)` Register a callback to be invoked when an item in this AdapterView has been clicked and held
`void`	`setOnItemSelectedListener(AdapterView.OnItemSelectedListener listener)` Register a callback to be invoked when an item in this AdapterView has been selected.
`abstract void`	`setSelection(int position)` Sets the currently selected item.

From class


  
    android.view.ViewGroup

`void`	`addChildrenForAccessibility(ArrayList<View> outChildren)` Adds the children of this View relevant for accessibility to the given list as output.
`void`	`addFocusables(ArrayList<View> views, int direction, int focusableMode)` Adds any focusable views that are descendants of this view (possibly including this view if it is focusable itself) to views.
`boolean`	`addStatesFromChildren()` Returns whether this ViewGroup's drawable states also include its children's drawable states.
`void`	`addTouchables(ArrayList<View> views)` Add any touchable views that are descendants of this view (possibly including this view if it is touchable itself) to views.
`void`	`addView(View child, ViewGroup.LayoutParams params)` Adds a child view with the specified layout parameters.
`void`	`addView(View child, int index)` Adds a child view.
`void`	`addView(View child, int index, ViewGroup.LayoutParams params)` Adds a child view with the specified layout parameters.
`void`	`addView(View child)` Adds a child view.
`void`	`addView(View child, int width, int height)` Adds a child view with this ViewGroup's default layout parameters and the specified width and height.
`boolean`	`addViewInLayout(View child, int index, ViewGroup.LayoutParams params, boolean preventRequestLayout)` Adds a view during layout.
`boolean`	`addViewInLayout(View child, int index, ViewGroup.LayoutParams params)` Adds a view during layout.
`void`	`attachLayoutAnimationParameters(View child, ViewGroup.LayoutParams params, int index, int count)` Subclasses should override this method to set layout animation parameters on the supplied child.
`void`	`attachViewToParent(View child, int index, ViewGroup.LayoutParams params)` Attaches a view to this view group.
`void`	`bringChildToFront(View child)` Change the z order of the child so it's on top of all other children.
`boolean`	`canAnimate()` Indicates whether the view group has the ability to animate its children after the first layout.
`boolean`	`checkLayoutParams(ViewGroup.LayoutParams p)`
`void`	`childDrawableStateChanged(View child)` If `addStatesFromChildren()` is true, refreshes this group's drawable state (to include the states from its children).
`void`	`childHasTransientStateChanged(View child, boolean childHasTransientState)` Called when a child view has changed whether or not it is tracking transient state.
`void`	`cleanupLayoutState(View child)` Prevents the specified child to be laid out during the next layout pass.
`void`	`clearChildFocus(View child)` Called when a child of this parent is giving up focus
`void`	`clearDisappearingChildren()` Removes any pending animations for views that have been removed.
`void`	`clearFocus()` Called when this view wants to give up focus.
`void`	`debug(int depth)` Prints information about this view in the log output, with the tag `VIEW_LOG_TAG`.
`void`	`detachAllViewsFromParent()` Detaches all views from the parent.
`void`	`detachViewFromParent(int index)` Detaches a view from its parent.
`void`	`detachViewFromParent(View child)` Detaches a view from its parent.
`void`	`detachViewsFromParent(int start, int count)` Detaches a range of views from their parents.
`WindowInsets`	`dispatchApplyWindowInsets(WindowInsets insets)` Request to apply the given window insets to this view or another view in its subtree.
`void`	`dispatchConfigurationChanged(Configuration newConfig)` Dispatch a notification about a resource configuration change down the view hierarchy.
`void`	`dispatchDisplayHint(int hint)` Dispatch a hint about whether this view is displayed.
`boolean`	`dispatchDragEvent(DragEvent event)` Detects if this View is enabled and has a drag event listener.
`void`	`dispatchDraw(Canvas canvas)` Called by draw to draw the child views.
`void`	`dispatchDrawableHotspotChanged(float x, float y)` Dispatches drawable hotspot changes to child views that meet at least one of the following criteria: Returns `false` from both `isClickable()` and `isLongClickable()` Requests duplication of parent state via `setDuplicateParentStateEnabled(boolean)`
`void`	`dispatchFreezeSelfOnly(SparseArray<Parcelable> container)` Perform dispatching of a `saveHierarchyState(android.util.SparseArray)` freeze()} to only this view, not to its children.
`boolean`	`dispatchGenericFocusedEvent(MotionEvent event)` Dispatch a generic motion event to the currently focused view.
`boolean`	`dispatchGenericPointerEvent(MotionEvent event)` Dispatch a generic motion event to the view under the first pointer.
`boolean`	`dispatchHoverEvent(MotionEvent event)` Dispatch a hover event.
`boolean`	`dispatchKeyEvent(KeyEvent event)` Dispatch a key event to the next view on the focus path.
`boolean`	`dispatchKeyEventPreIme(KeyEvent event)` Dispatch a key event before it is processed by any input method associated with the view hierarchy.
`boolean`	`dispatchKeyShortcutEvent(KeyEvent event)` Dispatches a key shortcut event.
`void`	`dispatchProvideStructure(ViewStructure structure)` Dispatch creation of `ViewStructure` down the hierarchy.
`void`	`dispatchRestoreInstanceState(SparseArray<Parcelable> container)` Called by `restoreHierarchyState(android.util.SparseArray)` to retrieve the state for this view and its children.
`void`	`dispatchSaveInstanceState(SparseArray<Parcelable> container)` Called by `saveHierarchyState(android.util.SparseArray)` to store the state for this view and its children.
`void`	`dispatchSetActivated(boolean activated)` Dispatch setActivated to all of this View's children.
`void`	`dispatchSetPressed(boolean pressed)` Dispatch setPressed to all of this View's children.
`void`	`dispatchSetSelected(boolean selected)` Dispatch setSelected to all of this View's children.
`void`	`dispatchSystemUiVisibilityChanged(int visible)` Dispatch callbacks to `setOnSystemUiVisibilityChangeListener(View.OnSystemUiVisibilityChangeListener)` down the view hierarchy.
`void`	`dispatchThawSelfOnly(SparseArray<Parcelable> container)` Perform dispatching of a `restoreHierarchyState(android.util.SparseArray)` to only this view, not to its children.
`boolean`	`dispatchTouchEvent(MotionEvent ev)` Pass the touch screen motion event down to the target view, or this view if it is the target.
`boolean`	`dispatchTrackballEvent(MotionEvent event)` Pass a trackball motion event down to the focused view.
`boolean`	`dispatchUnhandledMove(View focused, int direction)` This method is the last chance for the focused view and its ancestors to respond to an arrow key.
`void`	`dispatchVisibilityChanged(View changedView, int visibility)` Dispatch a view visibility change down the view hierarchy.
`void`	`dispatchWindowFocusChanged(boolean hasFocus)` Called when the window containing this view gains or loses window focus.
`void`	`dispatchWindowSystemUiVisiblityChanged(int visible)` Dispatch callbacks to `onWindowSystemUiVisibilityChanged(int)` down the view hierarchy.
`void`	`dispatchWindowVisibilityChanged(int visibility)` Dispatch a window visibility change down the view hierarchy.
`boolean`	`drawChild(Canvas canvas, View child, long drawingTime)` Draw one child of this View Group.
`void`	`drawableStateChanged()` This function is called whenever the state of the view changes in such a way that it impacts the state of drawables being shown.
`void`	`endViewTransition(View view)` This method should always be called following an earlier call to `startViewTransition(View)`.
`View`	`findFocus()` Find the view in the hierarchy rooted at this view that currently has focus.
`void`	`findViewsWithText(ArrayList<View> outViews, CharSequence text, int flags)` Finds the Views that contain given text.
`View`	`focusSearch(View focused, int direction)` Find the nearest view in the specified direction that wants to take focus.
`void`	`focusableViewAvailable(View v)` Tells the parent that a new focusable view has become available.
`boolean`	`gatherTransparentRegion(Region region)` This is used by the RootView to perform an optimization when the view hierarchy contains one or several SurfaceView.
`ViewGroup.LayoutParams`	`generateDefaultLayoutParams()` Returns a set of default layout parameters.
`ViewGroup.LayoutParams`	`generateLayoutParams(AttributeSet attrs)` Returns a new set of layout parameters based on the supplied attributes set.
`ViewGroup.LayoutParams`	`generateLayoutParams(ViewGroup.LayoutParams p)` Returns a safe set of layout parameters based on the supplied layout params.
`CharSequence`	`getAccessibilityClassName()` Return the class name of this object to be used for accessibility purposes.
`View`	`getChildAt(int index)` Returns the view at the specified position in the group.
`int`	`getChildCount()` Returns the number of children in the group.
`int`	`getChildDrawingOrder(int childCount, int i)` Returns the index of the child to draw for this iteration.
`static int`	`getChildMeasureSpec(int spec, int padding, int childDimension)` Does the hard part of measureChildren: figuring out the MeasureSpec to pass to a particular child.
`boolean`	`getChildStaticTransformation(View child, Transformation t)` Sets `t` to be the static transformation of the child, if set, returning a boolean to indicate whether a static transform was set.
`boolean`	`getChildVisibleRect(View child, Rect r, Point offset)` Compute the visible part of a rectangular region defined in terms of a child view's coordinates.
`boolean`	`getClipChildren()` Returns whether this group's children are clipped to their bounds before drawing.
`boolean`	`getClipToPadding()` Returns whether this ViewGroup will clip its children to its padding, and resize (but not clip) any EdgeEffect to the padded region, if padding is present.
`int`	`getDescendantFocusability()` Gets the descendant focusability of this view group.
`View`	`getFocusedChild()` Returns the focused child of this view, if any.
`LayoutAnimationController`	`getLayoutAnimation()` Returns the layout animation controller used to animate the group's children.
`Animation.AnimationListener`	`getLayoutAnimationListener()` Returns the animation listener to which layout animation events are sent.
`int`	`getLayoutMode()` Returns the basis of alignment during layout operations on this ViewGroup: either `LAYOUT_MODE_CLIP_BOUNDS` or `LAYOUT_MODE_OPTICAL_BOUNDS`.
`LayoutTransition`	`getLayoutTransition()` Gets the LayoutTransition object for this ViewGroup.
`int`	`getNestedScrollAxes()` Return the current axes of nested scrolling for this ViewGroup.
`ViewGroupOverlay`	`getOverlay()` Returns the ViewGroupOverlay for this view group, creating it if it does not yet exist.
`int`	`getPersistentDrawingCache()` Returns an integer indicating what types of drawing caches are kept in memory.
`boolean`	`getTouchscreenBlocksFocus()` Check whether this ViewGroup should ignore focus requests for itself and its children.
`boolean`	`hasFocus()` Returns true if this view has or contains focus
`boolean`	`hasFocusable()` Returns true if this view is focusable or if it contains a reachable View for which `hasFocusable()` returns true.
`boolean`	`hasTransientState()` Indicates whether the view is currently tracking transient state that the app should not need to concern itself with saving and restoring, but that the framework should take special note to preserve when possible.
`int`	`indexOfChild(View child)` Returns the position in the group of the specified child view.
`final void`	`invalidateChild(View child, Rect dirty)` Don't call or override this method.
`ViewParent`	`invalidateChildInParent(int[] location, Rect dirty)` Don't call or override this method.
`boolean`	`isAlwaysDrawnWithCacheEnabled()` This method was deprecated in API level 23. As of `M`, this property is ignored. Child views may no longer have their caching behavior disabled by parents.
`boolean`	`isAnimationCacheEnabled()` This method was deprecated in API level 23. As of `M`, this property is ignored. Caching behavior of children may be controlled through `setLayerType(int, Paint)`.
`boolean`	`isChildrenDrawingOrderEnabled()` Indicates whether the ViewGroup is drawing its children in the order defined by `getChildDrawingOrder(int, int)`.
`boolean`	`isChildrenDrawnWithCacheEnabled()` This method was deprecated in API level 23. As of `M`, this property is ignored. Child views may no longer be forced to cache their rendering state by their parents. Use `setLayerType(int, Paint)` on individual Views instead.
`boolean`	`isMotionEventSplittingEnabled()` Returns true if MotionEvents dispatched to this ViewGroup can be split to multiple children.
`boolean`	`isTransitionGroup()` Returns true if this ViewGroup should be considered as a single entity for removal when executing an Activity transition.
`void`	`jumpDrawablesToCurrentState()` Call `Drawable.jumpToCurrentState()` on all Drawable objects associated with this view.
`final void`	`layout(int l, int t, int r, int b)` Assign a size and position to a view and all of its descendants This is the second phase of the layout mechanism.
`void`	`measureChild(View child, int parentWidthMeasureSpec, int parentHeightMeasureSpec)` Ask one of the children of this view to measure itself, taking into account both the MeasureSpec requirements for this view and its padding.
`void`	`measureChildWithMargins(View child, int parentWidthMeasureSpec, int widthUsed, int parentHeightMeasureSpec, int heightUsed)` Ask one of the children of this view to measure itself, taking into account both the MeasureSpec requirements for this view and its padding and margins.
`void`	`measureChildren(int widthMeasureSpec, int heightMeasureSpec)` Ask all of the children of this view to measure themselves, taking into account both the MeasureSpec requirements for this view and its padding.
`void`	`notifySubtreeAccessibilityStateChanged(View child, View source, int changeType)` Notifies a view parent that the accessibility state of one of its descendants has changed and that the structure of the subtree is different.
`final void`	`offsetDescendantRectToMyCoords(View descendant, Rect rect)` Offset a rectangle that is in a descendant's coordinate space into our coordinate space.
`final void`	`offsetRectIntoDescendantCoords(View descendant, Rect rect)` Offset a rectangle that is in our coordinate space into an ancestor's coordinate space.
`void`	`onAttachedToWindow()` This is called when the view is attached to a window.
`int[]`	`onCreateDrawableState(int extraSpace)` Generate the new `Drawable` state for this view.
`void`	`onDetachedFromWindow()` This is called when the view is detached from a window.
`boolean`	`onInterceptHoverEvent(MotionEvent event)` Implement this method to intercept hover events before they are handled by child views.
`boolean`	`onInterceptTouchEvent(MotionEvent ev)` Implement this method to intercept all touch screen motion events.
`abstract void`	`onLayout(boolean changed, int l, int t, int r, int b)` Called from layout when this view should assign a size and position to each of its children.
`boolean`	`onNestedFling(View target, float velocityX, float velocityY, boolean consumed)` Request a fling from a nested scroll.
`boolean`	`onNestedPreFling(View target, float velocityX, float velocityY)` React to a nested fling before the target view consumes it.
`boolean`	`onNestedPrePerformAccessibilityAction(View target, int action, Bundle args)` React to an accessibility action delegated by a target descendant view before the target processes it. Subclasses should always call `super.onNestedPrePerformAccessibilityAction`
`void`	`onNestedPreScroll(View target, int dx, int dy, int[] consumed)` React to a nested scroll in progress before the target view consumes a portion of the scroll.
`void`	`onNestedScroll(View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed)` React to a nested scroll in progress.
`void`	`onNestedScrollAccepted(View child, View target, int axes)` React to the successful claiming of a nested scroll operation.
`boolean`	`onRequestFocusInDescendants(int direction, Rect previouslyFocusedRect)` Look for a descendant to call `requestFocus()` on.
`boolean`	`onRequestSendAccessibilityEvent(View child, AccessibilityEvent event)` Called when a child has requested sending an `AccessibilityEvent` and gives an opportunity to its parent to augment the event.
`PointerIcon`	`onResolvePointerIcon(MotionEvent event, int pointerIndex)` Returns the pointer icon for the motion event, or null if it doesn't specify the icon.
`boolean`	`onStartNestedScroll(View child, View target, int nestedScrollAxes)` React to a descendant view initiating a nestable scroll operation, claiming the nested scroll operation if appropriate.
`void`	`onStopNestedScroll(View child)` React to a nested scroll operation ending.
`void`	`onViewAdded(View child)` Called when a new child is added to this ViewGroup.
`void`	`onViewRemoved(View child)` Called when a child view is removed from this ViewGroup.
`void`	`recomputeViewAttributes(View child)` Tell view hierarchy that the global view attributes need to be re-evaluated.
`void`	`removeAllViews()` Call this method to remove all child views from the ViewGroup.
`void`	`removeAllViewsInLayout()` Called by a ViewGroup subclass to remove child views from itself, when it must first know its size on screen before it can calculate how many child views it will render.
`void`	`removeDetachedView(View child, boolean animate)` Finishes the removal of a detached view.
`void`	`removeView(View view)` Note: do not invoke this method from `draw(android.graphics.Canvas)`, `onDraw(android.graphics.Canvas)`, `dispatchDraw(android.graphics.Canvas)` or any related method.
`void`	`removeViewAt(int index)` Removes the view at the specified position in the group.
`void`	`removeViewInLayout(View view)` Removes a view during layout.
`void`	`removeViews(int start, int count)` Removes the specified range of views from the group.
`void`	`removeViewsInLayout(int start, int count)` Removes a range of views during layout.
`void`	`requestChildFocus(View child, View focused)` Called when a child of this parent wants focus
`boolean`	`requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate)` Called when a child of this group wants a particular rectangle to be positioned onto the screen.
`void`	`requestDisallowInterceptTouchEvent(boolean disallowIntercept)` Called when a child does not want this parent and its ancestors to intercept touch events with `onInterceptTouchEvent(MotionEvent)`.
`boolean`	`requestFocus(int direction, Rect previouslyFocusedRect)` Call this to try to give focus to a specific view or to one of its descendants and give it hints about the direction and a specific rectangle that the focus is coming from. Looks for a view to give focus to respecting the setting specified by `getDescendantFocusability()`.
`boolean`	`requestSendAccessibilityEvent(View child, AccessibilityEvent event)` Called by a child to request from its parent to send an `AccessibilityEvent`.
`void`	`requestTransparentRegion(View child)` Called when a child wants the view hierarchy to gather and report transparent regions to the window compositor.
`void`	`scheduleLayoutAnimation()` Schedules the layout animation to be played after the next layout pass of this view group.
`void`	`setAddStatesFromChildren(boolean addsStates)` Sets whether this ViewGroup's drawable states also include its children's drawable states.
`void`	`setAlwaysDrawnWithCacheEnabled(boolean always)` This method was deprecated in API level 23. As of `M`, this property is ignored. Child views may no longer have their caching behavior disabled by parents.
`void`	`setAnimationCacheEnabled(boolean enabled)` This method was deprecated in API level 23. As of `M`, this property is ignored. Caching behavior of children may be controlled through `setLayerType(int, Paint)`.
`void`	`setChildrenDrawingCacheEnabled(boolean enabled)` Enables or disables the drawing cache for each child of this view group.
`void`	`setChildrenDrawingOrderEnabled(boolean enabled)` Tells the ViewGroup whether to draw its children in the order defined by the method `getChildDrawingOrder(int, int)`.
`void`	`setChildrenDrawnWithCacheEnabled(boolean enabled)` This method was deprecated in API level 23. As of `M`, this property is ignored. Child views may no longer be forced to cache their rendering state by their parents. Use `setLayerType(int, Paint)` on individual Views instead.
`void`	`setClipChildren(boolean clipChildren)` By default, children are clipped to their bounds before drawing.
`void`	`setClipToPadding(boolean clipToPadding)` Sets whether this ViewGroup will clip its children to its padding and resize (but not clip) any EdgeEffect to the padded region, if padding is present.
`void`	`setDescendantFocusability(int focusability)` Set the descendant focusability of this view group.
`void`	`setLayoutAnimation(LayoutAnimationController controller)` Sets the layout animation controller used to animate the group's children after the first layout.
`void`	`setLayoutAnimationListener(Animation.AnimationListener animationListener)` Specifies the animation listener to which layout animation events must be sent.
`void`	`setLayoutMode(int layoutMode)` Sets the basis of alignment during the layout of this ViewGroup.
`void`	`setLayoutTransition(LayoutTransition transition)` Sets the LayoutTransition object for this ViewGroup.
`void`	`setMotionEventSplittingEnabled(boolean split)` Enable or disable the splitting of MotionEvents to multiple children during touch event dispatch.
`void`	`setOnHierarchyChangeListener(ViewGroup.OnHierarchyChangeListener listener)` Register a callback to be invoked when a child is added to or removed from this view.
`void`	`setPersistentDrawingCache(int drawingCacheToKeep)` Indicates what types of drawing caches should be kept in memory after they have been created.
`void`	`setStaticTransformationsEnabled(boolean enabled)` When this property is set to true, this ViewGroup supports static transformations on children; this causes `getChildStaticTransformation(View, android.view.animation.Transformation)` to be invoked when a child is drawn.
`void`	`setTouchscreenBlocksFocus(boolean touchscreenBlocksFocus)` Set whether this ViewGroup should ignore focus requests for itself and its children.
`void`	`setTransitionGroup(boolean isTransitionGroup)` Changes whether or not this ViewGroup should be treated as a single entity during Activity Transitions.
`boolean`	`shouldDelayChildPressedState()` Return true if the pressed state should be delayed for children or descendants of this ViewGroup.
`boolean`	`showContextMenuForChild(View originalView, float x, float y)` Shows the context menu for the specified view or its ancestors anchored to the specified view-relative coordinate.
`boolean`	`showContextMenuForChild(View originalView)` Shows the context menu for the specified view or its ancestors.
`ActionMode`	`startActionModeForChild(View originalView, ActionMode.Callback callback, int type)` Start an action mode of a specific type for the specified view.
`ActionMode`	`startActionModeForChild(View originalView, ActionMode.Callback callback)` Start an action mode for the specified view with the default type `TYPE_PRIMARY`.
`void`	`startLayoutAnimation()` Runs the layout animation.
`void`	`startViewTransition(View view)` This method tells the ViewGroup that the given View object, which should have this ViewGroup as its parent, should be kept around (re-displayed when the ViewGroup draws its children) even if it is removed from its parent.
`void`	`updateViewLayout(View view, ViewGroup.LayoutParams params)`

From class


  
    android.view.View

`void`	`addChildrenForAccessibility(ArrayList<View> outChildren)` Adds the children of this View relevant for accessibility to the given list as output.
`void`	`addFocusables(ArrayList<View> views, int direction)` Add any focusable views that are descendants of this view (possibly including this view if it is focusable itself) to views.
`void`	`addFocusables(ArrayList<View> views, int direction, int focusableMode)` Adds any focusable views that are descendants of this view (possibly including this view if it is focusable itself) to views.
`void`	`addOnAttachStateChangeListener(View.OnAttachStateChangeListener listener)` Add a listener for attach state changes.
`void`	`addOnLayoutChangeListener(View.OnLayoutChangeListener listener)` Add a listener that will be called when the bounds of the view change due to layout processing.
`void`	`addTouchables(ArrayList<View> views)` Add any touchable views that are descendants of this view (possibly including this view if it is touchable itself) to views.
`ViewPropertyAnimator`	`animate()` This method returns a ViewPropertyAnimator object, which can be used to animate specific properties on this View.
`void`	`announceForAccessibility(CharSequence text)` Convenience method for sending a `TYPE_ANNOUNCEMENT` `AccessibilityEvent` to make an announcement which is related to some sort of a context change for which none of the events representing UI transitions is a good fit.
`boolean`	`awakenScrollBars(int startDelay, boolean invalidate)` Trigger the scrollbars to draw.
`boolean`	`awakenScrollBars(int startDelay)` Trigger the scrollbars to draw.
`boolean`	`awakenScrollBars()` Trigger the scrollbars to draw.
`void`	`bringToFront()` Change the view's z order in the tree, so it's on top of other sibling views.
`void`	`buildDrawingCache(boolean autoScale)` Forces the drawing cache to be built if the drawing cache is invalid.
`void`	`buildDrawingCache()` Calling this method is equivalent to calling `buildDrawingCache(false)`.
`void`	`buildLayer()` Forces this view's layer to be created and this view to be rendered into its layer.
`boolean`	`callOnClick()` Directly call any attached OnClickListener.
`boolean`	`canResolveLayoutDirection()` Check if layout direction resolution can be done.
`boolean`	`canResolveTextAlignment()` Check if text alignment resolution can be done.
`boolean`	`canResolveTextDirection()` Check if text direction resolution can be done.
`boolean`	`canScrollHorizontally(int direction)` Check if this view can be scrolled horizontally in a certain direction.
`boolean`	`canScrollVertically(int direction)` Check if this view can be scrolled vertically in a certain direction.
`final void`	`cancelDragAndDrop()` Cancels an ongoing drag and drop operation.
`void`	`cancelLongPress()` Cancels a pending long press.
`final void`	`cancelPendingInputEvents()` Cancel any deferred high-level input events that were previously posted to the event queue.
`boolean`	`checkInputConnectionProxy(View view)` Called by the `InputMethodManager` when a view who is not the current input connection target is trying to make a call on the manager.
`void`	`clearAnimation()` Cancels any animations for this view.
`void`	`clearFocus()` Called when this view wants to give up focus.
`static int`	`combineMeasuredStates(int curState, int newState)` Merge two states as returned by `getMeasuredState()`.
`int`	`computeHorizontalScrollExtent()` Compute the horizontal extent of the horizontal scrollbar's thumb within the horizontal range.
`int`	`computeHorizontalScrollOffset()` Compute the horizontal offset of the horizontal scrollbar's thumb within the horizontal range.
`int`	`computeHorizontalScrollRange()` Compute the horizontal range that the horizontal scrollbar represents.
`void`	`computeScroll()` Called by a parent to request that a child update its values for mScrollX and mScrollY if necessary.
`WindowInsets`	`computeSystemWindowInsets(WindowInsets in, Rect outLocalInsets)` Compute insets that should be consumed by this view and the ones that should propagate to those under it.
`int`	`computeVerticalScrollExtent()` Compute the vertical extent of the vertical scrollbar's thumb within the vertical range.
`int`	`computeVerticalScrollOffset()` Compute the vertical offset of the vertical scrollbar's thumb within the horizontal range.
`int`	`computeVerticalScrollRange()` Compute the vertical range that the vertical scrollbar represents.
`AccessibilityNodeInfo`	`createAccessibilityNodeInfo()` Returns an `AccessibilityNodeInfo` representing this view from the point of view of an `AccessibilityService`.
`void`	`createContextMenu(ContextMenu menu)` Show the context menu for this view.
`void`	`destroyDrawingCache()` Frees the resources used by the drawing cache.
`WindowInsets`	`dispatchApplyWindowInsets(WindowInsets insets)` Request to apply the given window insets to this view or another view in its subtree.
`void`	`dispatchConfigurationChanged(Configuration newConfig)` Dispatch a notification about a resource configuration change down the view hierarchy.
`void`	`dispatchDisplayHint(int hint)` Dispatch a hint about whether this view is displayed.
`boolean`	`dispatchDragEvent(DragEvent event)` Detects if this View is enabled and has a drag event listener.
`void`	`dispatchDraw(Canvas canvas)` Called by draw to draw the child views.
`void`	`dispatchDrawableHotspotChanged(float x, float y)` Dispatches drawableHotspotChanged to all of this View's children.
`void`	`dispatchFinishTemporaryDetach()` Dispatch `onFinishTemporaryDetach()` to this View and its direct children if this is a container View.
`boolean`	`dispatchGenericFocusedEvent(MotionEvent event)` Dispatch a generic motion event to the currently focused view.
`boolean`	`dispatchGenericMotionEvent(MotionEvent event)` Dispatch a generic motion event.
`boolean`	`dispatchGenericPointerEvent(MotionEvent event)` Dispatch a generic motion event to the view under the first pointer.
`boolean`	`dispatchHoverEvent(MotionEvent event)` Dispatch a hover event.
`boolean`	`dispatchKeyEvent(KeyEvent event)` Dispatch a key event to the next view on the focus path.
`boolean`	`dispatchKeyEventPreIme(KeyEvent event)` Dispatch a key event before it is processed by any input method associated with the view hierarchy.
`boolean`	`dispatchKeyShortcutEvent(KeyEvent event)` Dispatches a key shortcut event.
`boolean`	`dispatchNestedFling(float velocityX, float velocityY, boolean consumed)` Dispatch a fling to a nested scrolling parent.
`boolean`	`dispatchNestedPreFling(float velocityX, float velocityY)` Dispatch a fling to a nested scrolling parent before it is processed by this view.
`boolean`	`dispatchNestedPrePerformAccessibilityAction(int action, Bundle arguments)` Report an accessibility action to this view's parents for delegated processing.
`boolean`	`dispatchNestedPreScroll(int dx, int dy, int[] consumed, int[] offsetInWindow)` Dispatch one step of a nested scroll in progress before this view consumes any portion of it.
`boolean`	`dispatchNestedScroll(int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, int[] offsetInWindow)` Dispatch one step of a nested scroll in progress.
`boolean`	`dispatchPopulateAccessibilityEvent(AccessibilityEvent event)` Dispatches an `AccessibilityEvent` to the `View` first and then to its children for adding their text content to the event.
`void`	`dispatchProvideStructure(ViewStructure structure)` Dispatch creation of `ViewStructure` down the hierarchy.
`void`	`dispatchRestoreInstanceState(SparseArray<Parcelable> container)` Called by `restoreHierarchyState(android.util.SparseArray)` to retrieve the state for this view and its children.
`void`	`dispatchSaveInstanceState(SparseArray<Parcelable> container)` Called by `saveHierarchyState(android.util.SparseArray)` to store the state for this view and its children.
`void`	`dispatchSetActivated(boolean activated)` Dispatch setActivated to all of this View's children.
`void`	`dispatchSetPressed(boolean pressed)` Dispatch setPressed to all of this View's children.
`void`	`dispatchSetSelected(boolean selected)` Dispatch setSelected to all of this View's children.
`void`	`dispatchStartTemporaryDetach()` Dispatch `onStartTemporaryDetach()` to this View and its direct children if this is a container View.
`void`	`dispatchSystemUiVisibilityChanged(int visibility)` Dispatch callbacks to `setOnSystemUiVisibilityChangeListener(View.OnSystemUiVisibilityChangeListener)` down the view hierarchy.
`boolean`	`dispatchTouchEvent(MotionEvent event)` Pass the touch screen motion event down to the target view, or this view if it is the target.
`boolean`	`dispatchTrackballEvent(MotionEvent event)` Pass a trackball motion event down to the focused view.
`boolean`	`dispatchUnhandledMove(View focused, int direction)` This method is the last chance for the focused view and its ancestors to respond to an arrow key.
`void`	`dispatchVisibilityChanged(View changedView, int visibility)` Dispatch a view visibility change down the view hierarchy.
`void`	`dispatchWindowFocusChanged(boolean hasFocus)` Called when the window containing this view gains or loses window focus.
`void`	`dispatchWindowSystemUiVisiblityChanged(int visible)` Dispatch callbacks to `onWindowSystemUiVisibilityChanged(int)` down the view hierarchy.
`void`	`dispatchWindowVisibilityChanged(int visibility)` Dispatch a window visibility change down the view hierarchy.
`void`	`draw(Canvas canvas)` Manually render this view (and all of its children) to the given Canvas.
`void`	`drawableHotspotChanged(float x, float y)` This function is called whenever the view hotspot changes and needs to be propagated to drawables or child views managed by the view.
`void`	`drawableStateChanged()` This function is called whenever the state of the view changes in such a way that it impacts the state of drawables being shown.
`View`	`findFocus()` Find the view in the hierarchy rooted at this view that currently has focus.
`final View`	`findViewById(int id)` Look for a child view with the given id.
`final View`	`findViewWithTag(Object tag)` Look for a child view with the given tag.
`void`	`findViewsWithText(ArrayList<View> outViews, CharSequence searched, int flags)` Finds the Views that contain given text.
`boolean`	`fitSystemWindows(Rect insets)` This method was deprecated in API level 20. As of API 20 use `dispatchApplyWindowInsets(WindowInsets)` to apply insets to views. Views should override `onApplyWindowInsets(WindowInsets)` or use `setOnApplyWindowInsetsListener(android.view.View.OnApplyWindowInsetsListener)` to implement handling their own insets.
`View`	`focusSearch(int direction)` Find the nearest view in the specified direction that can take focus.
`void`	`forceHasOverlappingRendering(boolean hasOverlappingRendering)` Sets the behavior for overlapping rendering for this view (see `hasOverlappingRendering()` for more details on this behavior).
`void`	`forceLayout()` Forces this view to be laid out during the next layout pass.
`static int`	`generateViewId()` Generate a value suitable for use in `setId(int)`.
`CharSequence`	`getAccessibilityClassName()` Return the class name of this object to be used for accessibility purposes.
`int`	`getAccessibilityLiveRegion()` Gets the live region mode for this View.
`AccessibilityNodeProvider`	`getAccessibilityNodeProvider()` Gets the provider for managing a virtual view hierarchy rooted at this View and reported to `AccessibilityService`s that explore the window content.
`int`	`getAccessibilityTraversalAfter()` Gets the id of a view after which this one is visited in accessibility traversal.
`int`	`getAccessibilityTraversalBefore()` Gets the id of a view before which this one is visited in accessibility traversal.
`float`	`getAlpha()` The opacity of the view.
`Animation`	`getAnimation()` Get the animation currently associated with this view.
`IBinder`	`getApplicationWindowToken()` Retrieve a unique token identifying the top-level "real" window of the window that this view is attached to.
`Drawable`	`getBackground()` Gets the background drawable
`ColorStateList`	`getBackgroundTintList()` Return the tint applied to the background drawable, if specified.
`PorterDuff.Mode`	`getBackgroundTintMode()` Return the blending mode used to apply the tint to the background drawable, if specified.
`int`	`getBaseline()` Return the offset of the widget's text baseline from the widget's top boundary.
`final int`	`getBottom()` Bottom position of this view relative to its parent.
`float`	`getBottomFadingEdgeStrength()` Returns the strength, or intensity, of the bottom faded edge.
`int`	`getBottomPaddingOffset()` Amount by which to extend the bottom fading region.
`float`	`getCameraDistance()` Gets the distance along the Z axis from the camera to this view.
`boolean`	`getClipBounds(Rect outRect)` Populates an output rectangle with the clip bounds of the view, returning `true` if successful or `false` if the view's clip bounds are `null`.
`Rect`	`getClipBounds()` Returns a copy of the current `clipBounds`.
`final boolean`	`getClipToOutline()` Returns whether the Outline should be used to clip the contents of the View.
`CharSequence`	`getContentDescription()` Returns the `View`'s content description.
`final Context`	`getContext()` Returns the context the view is running in, through which it can access the current theme, resources, etc.
`ContextMenu.ContextMenuInfo`	`getContextMenuInfo()` Views should implement this if they have extra information to associate with the context menu.
`static int`	`getDefaultSize(int size, int measureSpec)` Utility to return a default size.
`Display`	`getDisplay()` Gets the logical display to which the view's window has been attached.
`final int[]`	`getDrawableState()` Return an array of resource IDs of the drawable states representing the current state of the view.
`Bitmap`	`getDrawingCache()` Calling this method is equivalent to calling `getDrawingCache(false)`.
`Bitmap`	`getDrawingCache(boolean autoScale)` Returns the bitmap in which this view drawing is cached.
`int`	`getDrawingCacheBackgroundColor()`
`int`	`getDrawingCacheQuality()` Returns the quality of the drawing cache.
`void`	`getDrawingRect(Rect outRect)` Return the visible drawing bounds of your view.
`long`	`getDrawingTime()` Return the time at which the drawing of the view hierarchy started.
`float`	`getElevation()` The base elevation of this view relative to its parent, in pixels.
`boolean`	`getFilterTouchesWhenObscured()` Gets whether the framework should discard touches when the view's window is obscured by another visible window.
`boolean`	`getFitsSystemWindows()` Check for state of `setFitsSystemWindows(boolean)`.
`ArrayList<View>`	`getFocusables(int direction)` Find and return all focusable views that are descendants of this view, possibly including this view if it is focusable itself.
`void`	`getFocusedRect(Rect r)` When a view has focus and the user navigates away from it, the next view is searched for starting from the rectangle filled in by this method.
`Drawable`	`getForeground()` Returns the drawable used as the foreground of this View.
`int`	`getForegroundGravity()` Describes how the foreground is positioned.
`ColorStateList`	`getForegroundTintList()` Return the tint applied to the foreground drawable, if specified.
`PorterDuff.Mode`	`getForegroundTintMode()` Return the blending mode used to apply the tint to the foreground drawable, if specified.
`final boolean`	`getGlobalVisibleRect(Rect r)`
`boolean`	`getGlobalVisibleRect(Rect r, Point globalOffset)` If some part of this view is not clipped by any of its parents, then return that area in r in global (root) coordinates.
`Handler`	`getHandler()`
`final boolean`	`getHasOverlappingRendering()` Returns the value for overlapping rendering that is used internally.
`final int`	`getHeight()` Return the height of your view.
`void`	`getHitRect(Rect outRect)` Hit rectangle in parent's coordinates
`int`	`getHorizontalFadingEdgeLength()` Returns the size of the horizontal faded edges used to indicate that more content in this view is visible.
`int`	`getHorizontalScrollbarHeight()` Returns the height of the horizontal scrollbar.
`int`	`getId()` Returns this view's identifier.
`int`	`getImportantForAccessibility()` Gets the mode for determining whether this View is important for accessibility which is if it fires accessibility events and if it is reported to accessibility services that query the screen.
`boolean`	`getKeepScreenOn()` Returns whether the screen should remain on, corresponding to the current value of `KEEP_SCREEN_ON`.
`KeyEvent.DispatcherState`	`getKeyDispatcherState()` Return the global `KeyEvent.DispatcherState` for this view's window.
`int`	`getLabelFor()` Gets the id of a view for which this view serves as a label for accessibility purposes.
`int`	`getLayerType()` Indicates what type of layer is currently associated with this view.
`int`	`getLayoutDirection()` Returns the resolved layout direction for this view.
`ViewGroup.LayoutParams`	`getLayoutParams()` Get the LayoutParams associated with this view.
`final int`	`getLeft()` Left position of this view relative to its parent.
`float`	`getLeftFadingEdgeStrength()` Returns the strength, or intensity, of the left faded edge.
`int`	`getLeftPaddingOffset()` Amount by which to extend the left fading region.
`final boolean`	`getLocalVisibleRect(Rect r)`
`void`	`getLocationInWindow(int[] outLocation)` Computes the coordinates of this view in its window.
`void`	`getLocationOnScreen(int[] outLocation)` Computes the coordinates of this view on the screen.
`Matrix`	`getMatrix()` The transform matrix of this view, which is calculated based on the current rotation, scale, and pivot properties.
`final int`	`getMeasuredHeight()` Like `getMeasuredHeightAndState()`, but only returns the raw width component (that is the result is masked by `MEASURED_SIZE_MASK`).
`final int`	`getMeasuredHeightAndState()` Return the full height measurement information for this view as computed by the most recent call to `measure(int, int)`.
`final int`	`getMeasuredState()` Return only the state bits of `getMeasuredWidthAndState()` and `getMeasuredHeightAndState()`, combined into one integer.
`final int`	`getMeasuredWidth()` Like `getMeasuredWidthAndState()`, but only returns the raw width component (that is the result is masked by `MEASURED_SIZE_MASK`).
`final int`	`getMeasuredWidthAndState()` Return the full width measurement information for this view as computed by the most recent call to `measure(int, int)`.
`int`	`getMinimumHeight()` Returns the minimum height of the view.
`int`	`getMinimumWidth()` Returns the minimum width of the view.
`int`	`getNextFocusDownId()` Gets the id of the view to use when the next focus is `FOCUS_DOWN`.
`int`	`getNextFocusForwardId()` Gets the id of the view to use when the next focus is `FOCUS_FORWARD`.
`int`	`getNextFocusLeftId()` Gets the id of the view to use when the next focus is `FOCUS_LEFT`.
`int`	`getNextFocusRightId()` Gets the id of the view to use when the next focus is `FOCUS_RIGHT`.
`int`	`getNextFocusUpId()` Gets the id of the view to use when the next focus is `FOCUS_UP`.
`View.OnFocusChangeListener`	`getOnFocusChangeListener()` Returns the focus-change callback registered for this view.
`ViewOutlineProvider`	`getOutlineProvider()` Returns the current `ViewOutlineProvider` of the view, which generates the Outline that defines the shape of the shadow it casts, and enables outline clipping.
`int`	`getOverScrollMode()` Returns the over-scroll mode for this view.
`ViewOverlay`	`getOverlay()` Returns the overlay for this view, creating it if it does not yet exist.
`int`	`getPaddingBottom()` Returns the bottom padding of this view.
`int`	`getPaddingEnd()` Returns the end padding of this view depending on its resolved layout direction.
`int`	`getPaddingLeft()` Returns the left padding of this view.
`int`	`getPaddingRight()` Returns the right padding of this view.
`int`	`getPaddingStart()` Returns the start padding of this view depending on its resolved layout direction.
`int`	`getPaddingTop()` Returns the top padding of this view.
`final ViewParent`	`getParent()` Gets the parent of this view.
`ViewParent`	`getParentForAccessibility()` Gets the parent for accessibility purposes.
`float`	`getPivotX()` The x location of the point around which the view is `rotated` and `scaled`.
`float`	`getPivotY()` The y location of the point around which the view is `rotated` and `scaled`.
`PointerIcon`	`getPointerIcon()` Gets the pointer icon for the current view.
`Resources`	`getResources()` Returns the resources associated with this view.
`final int`	`getRight()` Right position of this view relative to its parent.
`float`	`getRightFadingEdgeStrength()` Returns the strength, or intensity, of the right faded edge.
`int`	`getRightPaddingOffset()` Amount by which to extend the right fading region.
`View`	`getRootView()` Finds the topmost view in the current view hierarchy.
`WindowInsets`	`getRootWindowInsets()` Provide original WindowInsets that are dispatched to the view hierarchy.
`float`	`getRotation()` The degrees that the view is rotated around the pivot point.
`float`	`getRotationX()` The degrees that the view is rotated around the horizontal axis through the pivot point.
`float`	`getRotationY()` The degrees that the view is rotated around the vertical axis through the pivot point.
`float`	`getScaleX()` The amount that the view is scaled in x around the pivot point, as a proportion of the view's unscaled width.
`float`	`getScaleY()` The amount that the view is scaled in y around the pivot point, as a proportion of the view's unscaled height.
`int`	`getScrollBarDefaultDelayBeforeFade()` Returns the delay before scrollbars fade.
`int`	`getScrollBarFadeDuration()` Returns the scrollbar fade duration.
`int`	`getScrollBarSize()` Returns the scrollbar size.
`int`	`getScrollBarStyle()` Returns the current scrollbar style.
`int`	`getScrollIndicators()` Returns a bitmask representing the enabled scroll indicators.
`final int`	`getScrollX()` Return the scrolled left position of this view.
`final int`	`getScrollY()` Return the scrolled top position of this view.
`int`	`getSolidColor()` Override this if your view is known to always be drawn on top of a solid color background, and needs to draw fading edges.
`StateListAnimator`	`getStateListAnimator()` Returns the current StateListAnimator if exists.
`int`	`getSuggestedMinimumHeight()` Returns the suggested minimum height that the view should use.
`int`	`getSuggestedMinimumWidth()` Returns the suggested minimum width that the view should use.
`int`	`getSystemUiVisibility()` Returns the last `setSystemUiVisibility(int)` that this view has requested.
`Object`	`getTag()` Returns this view's tag.
`Object`	`getTag(int key)` Returns the tag associated with this view and the specified key.
`int`	`getTextAlignment()` Return the resolved text alignment.
`int`	`getTextDirection()` Return the resolved text direction.
`final int`	`getTop()` Top position of this view relative to its parent.
`float`	`getTopFadingEdgeStrength()` Returns the strength, or intensity, of the top faded edge.
`int`	`getTopPaddingOffset()` Amount by which to extend the top fading region.
`TouchDelegate`	`getTouchDelegate()` Gets the TouchDelegate for this View.
`ArrayList<View>`	`getTouchables()` Find and return all touchable views that are descendants of this view, possibly including this view if it is touchable itself.
`String`	`getTransitionName()` Returns the name of the View to be used to identify Views in Transitions.
`float`	`getTranslationX()` The horizontal location of this view relative to its `left` position.
`float`	`getTranslationY()` The vertical location of this view relative to its `top` position.
`float`	`getTranslationZ()` The depth location of this view relative to its `elevation`.
`int`	`getVerticalFadingEdgeLength()` Returns the size of the vertical faded edges used to indicate that more content in this view is visible.
`int`	`getVerticalScrollbarPosition()`
`int`	`getVerticalScrollbarWidth()` Returns the width of the vertical scrollbar.
`ViewTreeObserver`	`getViewTreeObserver()` Returns the ViewTreeObserver for this view's hierarchy.
`int`	`getVisibility()` Returns the visibility status for this view.
`final int`	`getWidth()` Return the width of the your view.
`int`	`getWindowAttachCount()`
`WindowId`	`getWindowId()` Retrieve the `WindowId` for the window this view is currently attached to.
`int`	`getWindowSystemUiVisibility()` Returns the current system UI visibility that is currently set for the entire window.
`IBinder`	`getWindowToken()` Retrieve a unique token identifying the window this view is attached to.
`int`	`getWindowVisibility()` Returns the current visibility of the window this view is attached to (either `GONE`, `INVISIBLE`, or `VISIBLE`).
`void`	`getWindowVisibleDisplayFrame(Rect outRect)` Retrieve the overall visible display size in which the window this view is attached to has been positioned in.
`float`	`getX()` The visual x position of this view, in pixels.
`float`	`getY()` The visual y position of this view, in pixels.
`float`	`getZ()` The visual z position of this view, in pixels.
`boolean`	`hasFocus()` Returns true if this view has focus itself, or is the ancestor of the view that has focus.
`boolean`	`hasFocusable()` Returns true if this view is focusable or if it contains a reachable View for which `hasFocusable()` returns true.
`boolean`	`hasNestedScrollingParent()` Returns true if this view has a nested scrolling parent.
`boolean`	`hasOnClickListeners()` Return whether this view has an attached OnClickListener.
`boolean`	`hasOverlappingRendering()` Returns whether this View has content which overlaps.
`boolean`	`hasTransientState()` Indicates whether the view is currently tracking transient state that the app should not need to concern itself with saving and restoring, but that the framework should take special note to preserve when possible.
`boolean`	`hasWindowFocus()` Returns true if this view is in a window that currently has window focus.
`static View`	`inflate(Context context, int resource, ViewGroup root)` Inflate a view from an XML resource.
`void`	`invalidate()` Invalidate the whole view.
`void`	`invalidate(Rect dirty)` Mark the area defined by dirty as needing to be drawn.
`void`	`invalidate(int l, int t, int r, int b)` Mark the area defined by the rect (l,t,r,b) as needing to be drawn.
`void`	`invalidateDrawable(Drawable drawable)` Invalidates the specified Drawable.
`void`	`invalidateOutline()` Called to rebuild this View's Outline from its `outline provider`
`boolean`	`isAccessibilityFocused()` Returns whether this View is accessibility focused.
`boolean`	`isActivated()` Indicates the activation state of this view.
`boolean`	`isAttachedToWindow()` Returns true if this view is currently attached to a window.
`boolean`	`isClickable()` Indicates whether this view reacts to click events or not.
`boolean`	`isContextClickable()` Indicates whether this view reacts to context clicks or not.
`boolean`	`isDirty()` True if this view has changed since the last time being drawn.
`boolean`	`isDrawingCacheEnabled()` Indicates whether the drawing cache is enabled for this view.
`boolean`	`isDuplicateParentStateEnabled()` Indicates whether this duplicates its drawable state from its parent.
`boolean`	`isEnabled()` Returns the enabled status for this view.
`final boolean`	`isFocusable()` Returns whether this View is able to take focus.
`final boolean`	`isFocusableInTouchMode()` When a view is focusable, it may not want to take focus when in touch mode.
`boolean`	`isFocused()` Returns true if this view has focus
`boolean`	`isHapticFeedbackEnabled()`
`boolean`	`isHardwareAccelerated()` Indicates whether this view is attached to a hardware accelerated window or not.
`boolean`	`isHorizontalFadingEdgeEnabled()` Indicate whether the horizontal edges are faded when the view is scrolled horizontally.
`boolean`	`isHorizontalScrollBarEnabled()` Indicate whether the horizontal scrollbar should be drawn or not.
`boolean`	`isHovered()` Returns true if the view is currently hovered.
`boolean`	`isImportantForAccessibility()` Computes whether this view should be exposed for accessibility.
`boolean`	`isInEditMode()` Indicates whether this View is currently in edit mode.
`boolean`	`isInLayout()` Returns whether the view hierarchy is currently undergoing a layout pass.
`boolean`	`isInTouchMode()` Returns whether the device is currently in touch mode.
`boolean`	`isLaidOut()` Returns true if this view has been through at least one layout since it was last attached to or detached from a window.
`boolean`	`isLayoutDirectionResolved()`
`boolean`	`isLayoutRequested()` Indicates whether or not this view's layout will be requested during the next hierarchy layout pass.
`boolean`	`isLongClickable()` Indicates whether this view reacts to long click events or not.
`boolean`	`isNestedScrollingEnabled()` Returns true if nested scrolling is enabled for this view.
`boolean`	`isOpaque()` Indicates whether this View is opaque.
`boolean`	`isPaddingOffsetRequired()` If the View draws content inside its padding and enables fading edges, it needs to support padding offsets.
`boolean`	`isPaddingRelative()` Return if the padding has been set through relative values `setPaddingRelative(int, int, int, int)` or through
`boolean`	`isPressed()` Indicates whether the view is currently in pressed state.
`boolean`	`isSaveEnabled()` Indicates whether this view will save its state (that is, whether its `onSaveInstanceState()` method will be called).
`boolean`	`isSaveFromParentEnabled()` Indicates whether the entire hierarchy under this view will save its state when a state saving traversal occurs from its parent.
`boolean`	`isScrollContainer()` Indicates whether this view is one of the set of scrollable containers in its window.
`boolean`	`isScrollbarFadingEnabled()` Returns true if scrollbars will fade when this view is not scrolling
`boolean`	`isSelected()` Indicates the selection state of this view.
`boolean`	`isShown()` Returns the visibility of this view and all of its ancestors
`boolean`	`isSoundEffectsEnabled()`
`final boolean`	`isTemporarilyDetached()`
`boolean`	`isTextAlignmentResolved()`
`boolean`	`isTextDirectionResolved()`
`boolean`	`isVerticalFadingEdgeEnabled()` Indicate whether the vertical edges are faded when the view is scrolled horizontally.
`boolean`	`isVerticalScrollBarEnabled()` Indicate whether the vertical scrollbar should be drawn or not.
`void`	`jumpDrawablesToCurrentState()` Call `Drawable.jumpToCurrentState()` on all Drawable objects associated with this view.
`void`	`layout(int l, int t, int r, int b)` Assign a size and position to a view and all of its descendants This is the second phase of the layout mechanism.
`final void`	`measure(int widthMeasureSpec, int heightMeasureSpec)` This is called to find out how big a view should be.
`static int[]`	`mergeDrawableStates(int[] baseState, int[] additionalState)` Merge your own state values in `additionalState` into the base state values `baseState` that were returned by `onCreateDrawableState(int)`.
`void`	`offsetLeftAndRight(int offset)` Offset this view's horizontal location by the specified amount of pixels.
`void`	`offsetTopAndBottom(int offset)` Offset this view's vertical location by the specified number of pixels.
`void`	`onAnimationEnd()` Invoked by a parent ViewGroup to notify the end of the animation currently associated with this view.
`void`	`onAnimationStart()` Invoked by a parent ViewGroup to notify the start of the animation currently associated with this view.
`WindowInsets`	`onApplyWindowInsets(WindowInsets insets)` Called when the view should apply `WindowInsets` according to its internal policy.
`void`	`onAttachedToWindow()` This is called when the view is attached to a window.
`void`	`onCancelPendingInputEvents()` Called as the result of a call to `cancelPendingInputEvents()` on this view or a parent view.
`boolean`	`onCheckIsTextEditor()` Check whether the called view is a text editor, in which case it would make sense to automatically display a soft input window for it.
`void`	`onConfigurationChanged(Configuration newConfig)` Called when the current configuration of the resources being used by the application have changed.
`void`	`onCreateContextMenu(ContextMenu menu)` Views should implement this if the view itself is going to add items to the context menu.
`int[]`	`onCreateDrawableState(int extraSpace)` Generate the new `Drawable` state for this view.
`InputConnection`	`onCreateInputConnection(EditorInfo outAttrs)` Create a new InputConnection for an InputMethod to interact with the view.
`void`	`onDetachedFromWindow()` This is called when the view is detached from a window.
`void`	`onDisplayHint(int hint)` Gives this view a hint about whether is displayed or not.
`boolean`	`onDragEvent(DragEvent event)` Handles drag events sent by the system following a call to `startDragAndDrop()`.
`void`	`onDraw(Canvas canvas)` Implement this to do your drawing.
`void`	`onDrawForeground(Canvas canvas)` Draw any foreground content for this view.
`final void`	`onDrawScrollBars(Canvas canvas)` Request the drawing of the horizontal and the vertical scrollbar.
`boolean`	`onFilterTouchEventForSecurity(MotionEvent event)` Filter the touch event to apply security policies.
`void`	`onFinishInflate()` Finalize inflating a view from XML.
`void`	`onFinishTemporaryDetach()` Called after `onStartTemporaryDetach()` when the container is done changing the view.
`void`	`onFocusChanged(boolean gainFocus, int direction, Rect previouslyFocusedRect)` Called by the view system when the focus state of this view changes.
`boolean`	`onGenericMotionEvent(MotionEvent event)` Implement this method to handle generic motion events.
`void`	`onHoverChanged(boolean hovered)` Implement this method to handle hover state changes.
`boolean`	`onHoverEvent(MotionEvent event)` Implement this method to handle hover events.
`void`	`onInitializeAccessibilityEvent(AccessibilityEvent event)` Initializes an `AccessibilityEvent` with information about this View which is the event source.
`void`	`onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info)` Initializes an `AccessibilityNodeInfo` with information about this view.
`boolean`	`onKeyDown(int keyCode, KeyEvent event)` Default implementation of `KeyEvent.Callback.onKeyDown()`: perform press of the view when `KEYCODE_DPAD_CENTER` or `KEYCODE_ENTER` is released, if the view is enabled and clickable.
`boolean`	`onKeyLongPress(int keyCode, KeyEvent event)` Default implementation of `KeyEvent.Callback.onKeyLongPress()`: always returns false (doesn't handle the event).
`boolean`	`onKeyMultiple(int keyCode, int repeatCount, KeyEvent event)` Default implementation of `KeyEvent.Callback.onKeyMultiple()`: always returns false (doesn't handle the event).
`boolean`	`onKeyPreIme(int keyCode, KeyEvent event)` Handle a key event before it is processed by any input method associated with the view hierarchy.
`boolean`	`onKeyShortcut(int keyCode, KeyEvent event)` Called on the focused view when a key shortcut event is not handled.
`boolean`	`onKeyUp(int keyCode, KeyEvent event)` Default implementation of `KeyEvent.Callback.onKeyUp()`: perform clicking of the view when `KEYCODE_DPAD_CENTER`, `KEYCODE_ENTER` or `KEYCODE_SPACE` is released.
`void`	`onLayout(boolean changed, int left, int top, int right, int bottom)` Called from layout when this view should assign a size and position to each of its children.
`void`	`onMeasure(int widthMeasureSpec, int heightMeasureSpec)` Measure the view and its content to determine the measured width and the measured height.
`void`	`onOverScrolled(int scrollX, int scrollY, boolean clampedX, boolean clampedY)` Called by `overScrollBy(int, int, int, int, int, int, int, int, boolean)` to respond to the results of an over-scroll operation.
`void`	`onPopulateAccessibilityEvent(AccessibilityEvent event)` Called from `dispatchPopulateAccessibilityEvent(AccessibilityEvent)` giving a chance to this View to populate the accessibility event with its text content.
`void`	`onProvideStructure(ViewStructure structure)` Called when assist structure is being retrieved from a view as part of `Activity.onProvideAssistData`.
`void`	`onProvideVirtualStructure(ViewStructure structure)` Called when assist structure is being retrieved from a view as part of `Activity.onProvideAssistData` to generate additional virtual structure under this view.
`PointerIcon`	`onResolvePointerIcon(MotionEvent event, int pointerIndex)` Returns the pointer icon for the motion event, or null if it doesn't specify the icon.
`void`	`onRestoreInstanceState(Parcelable state)` Hook allowing a view to re-apply a representation of its internal state that had previously been generated by `onSaveInstanceState()`.
`void`	`onRtlPropertiesChanged(int layoutDirection)` Called when any RTL property (layout direction or text direction or text alignment) has been changed.
`Parcelable`	`onSaveInstanceState()` Hook allowing a view to generate a representation of its internal state that can later be used to create a new instance with that same state.
`void`	`onScreenStateChanged(int screenState)` This method is called whenever the state of the screen this view is attached to changes.
`void`	`onScrollChanged(int l, int t, int oldl, int oldt)` This is called in response to an internal scroll in this view (i.e., the view scrolled its own contents).
`boolean`	`onSetAlpha(int alpha)` Invoked if there is a Transform that involves alpha.
`void`	`onSizeChanged(int w, int h, int oldw, int oldh)` This is called during layout when the size of this view has changed.
`void`	`onStartTemporaryDetach()` This is called when a container is going to temporarily detach a child, with `ViewGroup.detachViewFromParent`.
`boolean`	`onTouchEvent(MotionEvent event)` Implement this method to handle touch screen motion events.
`boolean`	`onTrackballEvent(MotionEvent event)` Implement this method to handle trackball motion events.
`void`	`onVisibilityAggregated(boolean isVisible)` Called when the user-visibility of this View is potentially affected by a change to this view itself, an ancestor view or the window this view is attached to.
`void`	`onVisibilityChanged(View changedView, int visibility)` Called when the visibility of the view or an ancestor of the view has changed.
`void`	`onWindowFocusChanged(boolean hasWindowFocus)` Called when the window containing this view gains or loses focus.
`void`	`onWindowSystemUiVisibilityChanged(int visible)` Override to find out when the window's requested system UI visibility has changed, that is the value returned by `getWindowSystemUiVisibility()`.
`void`	`onWindowVisibilityChanged(int visibility)` Called when the window containing has change its visibility (between `GONE`, `INVISIBLE`, and `VISIBLE`).
`boolean`	`overScrollBy(int deltaX, int deltaY, int scrollX, int scrollY, int scrollRangeX, int scrollRangeY, int maxOverScrollX, int maxOverScrollY, boolean isTouchEvent)` Scroll the view with standard behavior for scrolling beyond the normal content boundaries.
`boolean`	`performAccessibilityAction(int action, Bundle arguments)` Performs the specified accessibility action on the view.
`boolean`	`performClick()` Call this view's OnClickListener, if it is defined.
`boolean`	`performContextClick(float x, float y)` Call this view's OnContextClickListener, if it is defined.
`boolean`	`performContextClick()` Call this view's OnContextClickListener, if it is defined.
`boolean`	`performHapticFeedback(int feedbackConstant)` BZZZTT!!1! Provide haptic feedback to the user for this view.
`boolean`	`performHapticFeedback(int feedbackConstant, int flags)` BZZZTT!!1! Like `performHapticFeedback(int)`, with additional options.
`boolean`	`performLongClick(float x, float y)` Calls this view's OnLongClickListener, if it is defined.
`boolean`	`performLongClick()` Calls this view's OnLongClickListener, if it is defined.
`void`	`playSoundEffect(int soundConstant)` Play a sound effect for this view.
`boolean`	`post(Runnable action)` Causes the Runnable to be added to the message queue.
`boolean`	`postDelayed(Runnable action, long delayMillis)` Causes the Runnable to be added to the message queue, to be run after the specified amount of time elapses.
`void`	`postInvalidate()` Cause an invalidate to happen on a subsequent cycle through the event loop.
`void`	`postInvalidate(int left, int top, int right, int bottom)` Cause an invalidate of the specified area to happen on a subsequent cycle through the event loop.
`void`	`postInvalidateDelayed(long delayMilliseconds, int left, int top, int right, int bottom)` Cause an invalidate of the specified area to happen on a subsequent cycle through the event loop.
`void`	`postInvalidateDelayed(long delayMilliseconds)` Cause an invalidate to happen on a subsequent cycle through the event loop.
`void`	`postInvalidateOnAnimation(int left, int top, int right, int bottom)` Cause an invalidate of the specified area to happen on the next animation time step, typically the next display frame.
`void`	`postInvalidateOnAnimation()` Cause an invalidate to happen on the next animation time step, typically the next display frame.
`void`	`postOnAnimation(Runnable action)` Causes the Runnable to execute on the next animation time step.
`void`	`postOnAnimationDelayed(Runnable action, long delayMillis)` Causes the Runnable to execute on the next animation time step, after the specified amount of time elapses.
`void`	`refreshDrawableState()` Call this to force a view to update its drawable state.
`boolean`	`removeCallbacks(Runnable action)` Removes the specified Runnable from the message queue.
`void`	`removeOnAttachStateChangeListener(View.OnAttachStateChangeListener listener)` Remove a listener for attach state changes.
`void`	`removeOnLayoutChangeListener(View.OnLayoutChangeListener listener)` Remove a listener for layout changes.
`void`	`requestApplyInsets()` Ask that a new dispatch of `onApplyWindowInsets(WindowInsets)` be performed.
`void`	`requestFitSystemWindows()` This method was deprecated in API level 20. Use `requestApplyInsets()` for newer platform versions.
`final boolean`	`requestFocus(int direction)` Call this to try to give focus to a specific view or to one of its descendants and give it a hint about what direction focus is heading.
`final boolean`	`requestFocus()` Call this to try to give focus to a specific view or to one of its descendants.
`boolean`	`requestFocus(int direction, Rect previouslyFocusedRect)` Call this to try to give focus to a specific view or to one of its descendants and give it hints about the direction and a specific rectangle that the focus is coming from.
`final boolean`	`requestFocusFromTouch()` Call this to try to give focus to a specific view or to one of its descendants.
`void`	`requestLayout()` Call this when something has changed which has invalidated the layout of this view.
`boolean`	`requestRectangleOnScreen(Rect rectangle)` Request that a rectangle of this view be visible on the screen, scrolling if necessary just enough.
`boolean`	`requestRectangleOnScreen(Rect rectangle, boolean immediate)` Request that a rectangle of this view be visible on the screen, scrolling if necessary just enough.
`final void`	`requestUnbufferedDispatch(MotionEvent event)` Request unbuffered dispatch of the given stream of MotionEvents to this View.
`static int`	`resolveSize(int size, int measureSpec)` Version of `resolveSizeAndState(int, int, int)` returning only the `MEASURED_SIZE_MASK` bits of the result.
`static int`	`resolveSizeAndState(int size, int measureSpec, int childMeasuredState)` Utility to reconcile a desired size and state, with constraints imposed by a MeasureSpec.
`void`	`restoreHierarchyState(SparseArray<Parcelable> container)` Restore this view hierarchy's frozen state from the given container.
`void`	`saveHierarchyState(SparseArray<Parcelable> container)` Store this view hierarchy's frozen state into the given container.
`void`	`scheduleDrawable(Drawable who, Runnable what, long when)` Schedules an action on a drawable to occur at a specified time.
`void`	`scrollBy(int x, int y)` Move the scrolled position of your view.
`void`	`scrollTo(int x, int y)` Set the scrolled position of your view.
`void`	`sendAccessibilityEvent(int eventType)` Sends an accessibility event of the given type.
`void`	`sendAccessibilityEventUnchecked(AccessibilityEvent event)` This method behaves exactly as `sendAccessibilityEvent(int)` but takes as an argument an empty `AccessibilityEvent` and does not perform a check whether accessibility is enabled.
`void`	`setAccessibilityDelegate(View.AccessibilityDelegate delegate)` Sets a delegate for implementing accessibility support via composition (as opposed to inheritance).
`void`	`setAccessibilityLiveRegion(int mode)` Sets the live region mode for this view.
`void`	`setAccessibilityTraversalAfter(int afterId)` Sets the id of a view after which this one is visited in accessibility traversal.
`void`	`setAccessibilityTraversalBefore(int beforeId)` Sets the id of a view before which this one is visited in accessibility traversal.
`void`	`setActivated(boolean activated)` Changes the activated state of this view.
`void`	`setAlpha(float alpha)` Sets the opacity of the view to a value from 0 to 1, where 0 means the view is completely transparent and 1 means the view is completely opaque.
`void`	`setAnimation(Animation animation)` Sets the next animation to play for this view.
`void`	`setBackground(Drawable background)` Set the background to a given Drawable, or remove the background.
`void`	`setBackgroundColor(int color)` Sets the background color for this view.
`void`	`setBackgroundDrawable(Drawable background)` This method was deprecated in API level 16. use `setBackground(Drawable)` instead
`void`	`setBackgroundResource(int resid)` Set the background to a given resource.
`void`	`setBackgroundTintList(ColorStateList tint)` Applies a tint to the background drawable.
`void`	`setBackgroundTintMode(PorterDuff.Mode tintMode)` Specifies the blending mode used to apply the tint specified by `setBackgroundTintList(ColorStateList)`} to the background drawable.
`final void`	`setBottom(int bottom)` Sets the bottom position of this view relative to its parent.
`void`	`setCameraDistance(float distance)` Sets the distance along the Z axis (orthogonal to the X/Y plane on which views are drawn) from the camera to this view.
`void`	`setClickable(boolean clickable)` Enables or disables click events for this view.
`void`	`setClipBounds(Rect clipBounds)` Sets a rectangular area on this view to which the view will be clipped when it is drawn.
`void`	`setClipToOutline(boolean clipToOutline)` Sets whether the View's Outline should be used to clip the contents of the View.
`void`	`setContentDescription(CharSequence contentDescription)` Sets the `View`'s content description.
`void`	`setContextClickable(boolean contextClickable)` Enables or disables context clicking for this view.
`void`	`setDrawingCacheBackgroundColor(int color)` Setting a solid background color for the drawing cache's bitmaps will improve performance and memory usage.
`void`	`setDrawingCacheEnabled(boolean enabled)` Enables or disables the drawing cache.
`void`	`setDrawingCacheQuality(int quality)` Set the drawing cache quality of this view.
`void`	`setDuplicateParentStateEnabled(boolean enabled)` Enables or disables the duplication of the parent's state into this view.
`void`	`setElevation(float elevation)` Sets the base elevation of this view, in pixels.
`void`	`setEnabled(boolean enabled)` Set the enabled state of this view.
`void`	`setFadingEdgeLength(int length)` Set the size of the faded edge used to indicate that more content in this view is available.
`void`	`setFilterTouchesWhenObscured(boolean enabled)` Sets whether the framework should discard touches when the view's window is obscured by another visible window.
`void`	`setFitsSystemWindows(boolean fitSystemWindows)` Sets whether or not this view should account for system screen decorations such as the status bar and inset its content; that is, controlling whether the default implementation of `fitSystemWindows(Rect)` will be executed.
`void`	`setFocusable(boolean focusable)` Set whether this view can receive the focus.
`void`	`setFocusableInTouchMode(boolean focusableInTouchMode)` Set whether this view can receive focus while in touch mode.
`void`	`setForeground(Drawable foreground)` Supply a Drawable that is to be rendered on top of all of the content in the view.
`void`	`setForegroundGravity(int gravity)` Describes how the foreground is positioned.
`void`	`setForegroundTintList(ColorStateList tint)` Applies a tint to the foreground drawable.
`void`	`setForegroundTintMode(PorterDuff.Mode tintMode)` Specifies the blending mode used to apply the tint specified by `setForegroundTintList(ColorStateList)`} to the background drawable.
`void`	`setHapticFeedbackEnabled(boolean hapticFeedbackEnabled)` Set whether this view should have haptic feedback for events such as long presses.
`void`	`setHasTransientState(boolean hasTransientState)` Set whether this view is currently tracking transient state that the framework should attempt to preserve when possible.
`void`	`setHorizontalFadingEdgeEnabled(boolean horizontalFadingEdgeEnabled)` Define whether the horizontal edges should be faded when this view is scrolled horizontally.
`void`	`setHorizontalScrollBarEnabled(boolean horizontalScrollBarEnabled)` Define whether the horizontal scrollbar should be drawn or not.
`void`	`setHovered(boolean hovered)` Sets whether the view is currently hovered.
`void`	`setId(int id)` Sets the identifier for this view.
`void`	`setImportantForAccessibility(int mode)` Sets how to determine whether this view is important for accessibility which is if it fires accessibility events and if it is reported to accessibility services that query the screen.
`void`	`setKeepScreenOn(boolean keepScreenOn)` Controls whether the screen should remain on, modifying the value of `KEEP_SCREEN_ON`.
`void`	`setLabelFor(int id)` Sets the id of a view for which this view serves as a label for accessibility purposes.
`void`	`setLayerPaint(Paint paint)` Updates the `Paint` object used with the current layer (used only if the current layer type is not set to `LAYER_TYPE_NONE`).
`void`	`setLayerType(int layerType, Paint paint)` Specifies the type of layer backing this view.
`void`	`setLayoutDirection(int layoutDirection)` Set the layout direction for this view.
`void`	`setLayoutParams(ViewGroup.LayoutParams params)` Set the layout parameters associated with this view.
`final void`	`setLeft(int left)` Sets the left position of this view relative to its parent.
`void`	`setLongClickable(boolean longClickable)` Enables or disables long click events for this view.
`final void`	`setMeasuredDimension(int measuredWidth, int measuredHeight)` This method must be called by `onMeasure(int, int)` to store the measured width and measured height.
`void`	`setMinimumHeight(int minHeight)` Sets the minimum height of the view.
`void`	`setMinimumWidth(int minWidth)` Sets the minimum width of the view.
`void`	`setNestedScrollingEnabled(boolean enabled)` Enable or disable nested scrolling for this view.
`void`	`setNextFocusDownId(int nextFocusDownId)` Sets the id of the view to use when the next focus is `FOCUS_DOWN`.
`void`	`setNextFocusForwardId(int nextFocusForwardId)` Sets the id of the view to use when the next focus is `FOCUS_FORWARD`.
`void`	`setNextFocusLeftId(int nextFocusLeftId)` Sets the id of the view to use when the next focus is `FOCUS_LEFT`.
`void`	`setNextFocusRightId(int nextFocusRightId)` Sets the id of the view to use when the next focus is `FOCUS_RIGHT`.
`void`	`setNextFocusUpId(int nextFocusUpId)` Sets the id of the view to use when the next focus is `FOCUS_UP`.
`void`	`setOnApplyWindowInsetsListener(View.OnApplyWindowInsetsListener listener)` Set an `View.OnApplyWindowInsetsListener` to take over the policy for applying window insets to this view.
`void`	`setOnClickListener(View.OnClickListener l)` Register a callback to be invoked when this view is clicked.
`void`	`setOnContextClickListener(View.OnContextClickListener l)` Register a callback to be invoked when this view is context clicked.
`void`	`setOnCreateContextMenuListener(View.OnCreateContextMenuListener l)` Register a callback to be invoked when the context menu for this view is being built.
`void`	`setOnDragListener(View.OnDragListener l)` Register a drag event listener callback object for this View.
`void`	`setOnFocusChangeListener(View.OnFocusChangeListener l)` Register a callback to be invoked when focus of this view changed.
`void`	`setOnGenericMotionListener(View.OnGenericMotionListener l)` Register a callback to be invoked when a generic motion event is sent to this view.
`void`	`setOnHoverListener(View.OnHoverListener l)` Register a callback to be invoked when a hover event is sent to this view.
`void`	`setOnKeyListener(View.OnKeyListener l)` Register a callback to be invoked when a hardware key is pressed in this view.
`void`	`setOnLongClickListener(View.OnLongClickListener l)` Register a callback to be invoked when this view is clicked and held.
`void`	`setOnScrollChangeListener(View.OnScrollChangeListener l)` Register a callback to be invoked when the scroll X or Y positions of this view change.
`void`	`setOnSystemUiVisibilityChangeListener(View.OnSystemUiVisibilityChangeListener l)` Set a listener to receive callbacks when the visibility of the system bar changes.
`void`	`setOnTouchListener(View.OnTouchListener l)` Register a callback to be invoked when a touch event is sent to this view.
`void`	`setOutlineProvider(ViewOutlineProvider provider)` Sets the `ViewOutlineProvider` of the view, which generates the Outline that defines the shape of the shadow it casts, and enables outline clipping.
`void`	`setOverScrollMode(int overScrollMode)` Set the over-scroll mode for this view.
`void`	`setPadding(int left, int top, int right, int bottom)` Sets the padding.
`void`	`setPaddingRelative(int start, int top, int end, int bottom)` Sets the relative padding.
`void`	`setPivotX(float pivotX)` Sets the x location of the point around which the view is `rotated` and `scaled`.
`void`	`setPivotY(float pivotY)` Sets the y location of the point around which the view is `rotated` and `scaled`.
`void`	`setPointerIcon(PointerIcon pointerIcon)` Set the pointer icon for the current view.
`void`	`setPressed(boolean pressed)` Sets the pressed state for this view.
`final void`	`setRight(int right)` Sets the right position of this view relative to its parent.
`void`	`setRotation(float rotation)` Sets the degrees that the view is rotated around the pivot point.
`void`	`setRotationX(float rotationX)` Sets the degrees that the view is rotated around the horizontal axis through the pivot point.
`void`	`setRotationY(float rotationY)` Sets the degrees that the view is rotated around the vertical axis through the pivot point.
`void`	`setSaveEnabled(boolean enabled)` Controls whether the saving of this view's state is enabled (that is, whether its `onSaveInstanceState()` method will be called).
`void`	`setSaveFromParentEnabled(boolean enabled)` Controls whether the entire hierarchy under this view will save its state when a state saving traversal occurs from its parent.
`void`	`setScaleX(float scaleX)` Sets the amount that the view is scaled in x around the pivot point, as a proportion of the view's unscaled width.
`void`	`setScaleY(float scaleY)` Sets the amount that the view is scaled in Y around the pivot point, as a proportion of the view's unscaled width.
`void`	`setScrollBarDefaultDelayBeforeFade(int scrollBarDefaultDelayBeforeFade)` Define the delay before scrollbars fade.
`void`	`setScrollBarFadeDuration(int scrollBarFadeDuration)` Define the scrollbar fade duration.
`void`	`setScrollBarSize(int scrollBarSize)` Define the scrollbar size.
`void`	`setScrollBarStyle(int style)` Specify the style of the scrollbars.
`void`	`setScrollContainer(boolean isScrollContainer)` Change whether this view is one of the set of scrollable containers in its window.
`void`	`setScrollIndicators(int indicators, int mask)` Sets the state of the scroll indicators specified by the mask.
`void`	`setScrollIndicators(int indicators)` Sets the state of all scroll indicators.
`void`	`setScrollX(int value)` Set the horizontal scrolled position of your view.
`void`	`setScrollY(int value)` Set the vertical scrolled position of your view.
`void`	`setScrollbarFadingEnabled(boolean fadeScrollbars)` Define whether scrollbars will fade when the view is not scrolling.
`void`	`setSelected(boolean selected)` Changes the selection state of this view.
`void`	`setSoundEffectsEnabled(boolean soundEffectsEnabled)` Set whether this view should have sound effects enabled for events such as clicking and touching.
`void`	`setStateListAnimator(StateListAnimator stateListAnimator)` Attaches the provided StateListAnimator to this View.
`void`	`setSystemUiVisibility(int visibility)` Request that the visibility of the status bar or other screen/window decorations be changed.
`void`	`setTag(int key, Object tag)` Sets a tag associated with this view and a key.
`void`	`setTag(Object tag)` Sets the tag associated with this view.
`void`	`setTextAlignment(int textAlignment)` Set the text alignment.
`void`	`setTextDirection(int textDirection)` Set the text direction.
`final void`	`setTop(int top)` Sets the top position of this view relative to its parent.
`void`	`setTouchDelegate(TouchDelegate delegate)` Sets the TouchDelegate for this View.
`final void`	`setTransitionName(String transitionName)` Sets the name of the View to be used to identify Views in Transitions.
`void`	`setTranslationX(float translationX)` Sets the horizontal location of this view relative to its `left` position.
`void`	`setTranslationY(float translationY)` Sets the vertical location of this view relative to its `top` position.
`void`	`setTranslationZ(float translationZ)` Sets the depth location of this view relative to its `elevation`.
`void`	`setVerticalFadingEdgeEnabled(boolean verticalFadingEdgeEnabled)` Define whether the vertical edges should be faded when this view is scrolled vertically.
`void`	`setVerticalScrollBarEnabled(boolean verticalScrollBarEnabled)` Define whether the vertical scrollbar should be drawn or not.
`void`	`setVerticalScrollbarPosition(int position)` Set the position of the vertical scroll bar.
`void`	`setVisibility(int visibility)` Set the enabled state of this view.
`void`	`setWillNotCacheDrawing(boolean willNotCacheDrawing)` When a View's drawing cache is enabled, drawing is redirected to an offscreen bitmap.
`void`	`setWillNotDraw(boolean willNotDraw)` If this view doesn't do any drawing on its own, set this flag to allow further optimizations.
`void`	`setX(float x)` Sets the visual x position of this view, in pixels.
`void`	`setY(float y)` Sets the visual y position of this view, in pixels.
`void`	`setZ(float z)` Sets the visual z position of this view, in pixels.
`boolean`	`showContextMenu()` Shows the context menu for this view.
`boolean`	`showContextMenu(float x, float y)` Shows the context menu for this view anchored to the specified view-relative coordinate.
`ActionMode`	`startActionMode(ActionMode.Callback callback, int type)` Start an action mode with the given type.
`ActionMode`	`startActionMode(ActionMode.Callback callback)` Start an action mode with the default type `TYPE_PRIMARY`.
`void`	`startAnimation(Animation animation)` Start the specified animation now.
`final boolean`	`startDrag(ClipData data, View.DragShadowBuilder shadowBuilder, Object myLocalState, int flags)` This method was deprecated in API level 24. Use `startDragAndDrop()` for newer platform versions.
`final boolean`	`startDragAndDrop(ClipData data, View.DragShadowBuilder shadowBuilder, Object myLocalState, int flags)` Starts a drag and drop operation.
`boolean`	`startNestedScroll(int axes)` Begin a nestable scroll operation along the given axes.
`void`	`stopNestedScroll()` Stop a nested scroll in progress.
`String`	`toString()` Returns a string representation of the object.
`void`	`unscheduleDrawable(Drawable who, Runnable what)` Cancels a scheduled action on a drawable.
`void`	`unscheduleDrawable(Drawable who)` Unschedule any events associated with the given Drawable.
`final void`	`updateDragShadow(View.DragShadowBuilder shadowBuilder)` Updates the drag shadow for the ongoing drag and drop operation.
`boolean`	`verifyDrawable(Drawable who)` If your view subclass is displaying its own Drawable objects, it should override this function and return true for any Drawable it is displaying.
`boolean`	`willNotCacheDrawing()` Returns whether or not this View can cache its drawing or not.
`boolean`	`willNotDraw()` Returns whether or not this View draws on its own.

From class


  
    java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long millis, int nanos)` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object, or some other thread interrupts the current thread, or a certain amount of real time has elapsed.
`final void`	`wait(long millis)` Causes the current thread to wait until either another thread invokes the `notify()` method or the `notifyAll()` method for this object, or a specified amount of time has elapsed.
`final void`	`wait()` Causes the current thread to wait until another thread invokes the `notify()` method or the `notifyAll()` method for this object.

From interface


  
    android.view.ViewParent

`abstract void`	`bringChildToFront(View child)` Change the z order of the child so it's on top of all other children.
`abstract boolean`	`canResolveLayoutDirection()` Tells if this view parent can resolve the layout direction.
`abstract boolean`	`canResolveTextAlignment()` Tells if this view parent can resolve the text alignment.
`abstract boolean`	`canResolveTextDirection()` Tells if this view parent can resolve the text direction.
`abstract void`	`childDrawableStateChanged(View child)` This method is called on the parent when a child's drawable state has changed.
`abstract void`	`childHasTransientStateChanged(View child, boolean hasTransientState)` Called when a child view now has or no longer is tracking transient state.
`abstract void`	`clearChildFocus(View child)` Called when a child of this parent is giving up focus
`abstract void`	`createContextMenu(ContextMenu menu)` Have the parent populate the specified context menu if it has anything to add (and then recurse on its parent).
`abstract View`	`focusSearch(View v, int direction)` Find the nearest view in the specified direction that wants to take focus
`abstract void`	`focusableViewAvailable(View v)` Tells the parent that a new focusable view has become available.
`abstract boolean`	`getChildVisibleRect(View child, Rect r, Point offset)` Compute the visible part of a rectangular region defined in terms of a child view's coordinates.
`abstract int`	`getLayoutDirection()` Return this view parent layout direction.
`abstract ViewParent`	`getParent()` Returns the parent if it exists, or null.
`abstract ViewParent`	`getParentForAccessibility()` Gets the parent of a given View for accessibility.
`abstract int`	`getTextAlignment()` Return this view parent text alignment.
`abstract int`	`getTextDirection()` Return this view parent text direction.
`abstract void`	`invalidateChild(View child, Rect r)` All or part of a child is dirty and needs to be redrawn.
`abstract ViewParent`	`invalidateChildInParent(int[] location, Rect r)` All or part of a child is dirty and needs to be redrawn.
`abstract boolean`	`isLayoutDirectionResolved()` Tells if this view parent layout direction is resolved.
`abstract boolean`	`isLayoutRequested()` Indicates whether layout was requested on this view parent.
`abstract boolean`	`isTextAlignmentResolved()` Tells if this view parent text alignment is resolved.
`abstract boolean`	`isTextDirectionResolved()` Tells if this view parent text direction is resolved.
`abstract void`	`notifySubtreeAccessibilityStateChanged(View child, View source, int changeType)` Notifies a view parent that the accessibility state of one of its descendants has changed and that the structure of the subtree is different.
`abstract boolean`	`onNestedFling(View target, float velocityX, float velocityY, boolean consumed)` Request a fling from a nested scroll.
`abstract boolean`	`onNestedPreFling(View target, float velocityX, float velocityY)` React to a nested fling before the target view consumes it.
`abstract boolean`	`onNestedPrePerformAccessibilityAction(View target, int action, Bundle arguments)` React to an accessibility action delegated by a target descendant view before the target processes it.
`abstract void`	`onNestedPreScroll(View target, int dx, int dy, int[] consumed)` React to a nested scroll in progress before the target view consumes a portion of the scroll.
`abstract void`	`onNestedScroll(View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed)` React to a nested scroll in progress.
`abstract void`	`onNestedScrollAccepted(View child, View target, int nestedScrollAxes)` React to the successful claiming of a nested scroll operation.
`abstract boolean`	`onStartNestedScroll(View child, View target, int nestedScrollAxes)` React to a descendant view initiating a nestable scroll operation, claiming the nested scroll operation if appropriate.
`abstract void`	`onStopNestedScroll(View target)` React to a nested scroll operation ending.
`abstract void`	`recomputeViewAttributes(View child)` Tell view hierarchy that the global view attributes need to be re-evaluated.
`abstract void`	`requestChildFocus(View child, View focused)` Called when a child of this parent wants focus
`abstract boolean`	`requestChildRectangleOnScreen(View child, Rect rectangle, boolean immediate)` Called when a child of this group wants a particular rectangle to be positioned onto the screen.
`abstract void`	`requestDisallowInterceptTouchEvent(boolean disallowIntercept)` Called when a child does not want this parent and its ancestors to intercept touch events with `onInterceptTouchEvent(MotionEvent)`.
`abstract void`	`requestFitSystemWindows()` Ask that a new dispatch of `View.fitSystemWindows(Rect)` be performed.
`abstract void`	`requestLayout()` Called when something has changed which has invalidated the layout of a child of this view parent.
`abstract boolean`	`requestSendAccessibilityEvent(View child, AccessibilityEvent event)` Called by a child to request from its parent to send an `AccessibilityEvent`.
`abstract void`	`requestTransparentRegion(View child)` Called when a child wants the view hierarchy to gather and report transparent regions to the window compositor.
`abstract boolean`	`showContextMenuForChild(View originalView)` Shows the context menu for the specified view or its ancestors.
`abstract boolean`	`showContextMenuForChild(View originalView, float x, float y)` Shows the context menu for the specified view or its ancestors anchored to the specified view-relative coordinate.
`abstract ActionMode`	`startActionModeForChild(View originalView, ActionMode.Callback callback, int type)` Start an action mode of a specific type for the specified view.
`abstract ActionMode`	`startActionModeForChild(View originalView, ActionMode.Callback callback)` Start an action mode for the specified view with the default type `TYPE_PRIMARY`.

From interface


  
    android.view.ViewManager

From interface


  
    android.graphics.drawable.Drawable.Callback

From interface


  
    android.view.KeyEvent.Callback

From interface


  
    android.view.accessibility.AccessibilityEventSource

From interface


  
    android.view.GestureDetector.OnGestureListener

XML attributes

android:animationDuration

Sets how long a transition animation should run (in milliseconds) when layout has changed. Only relevant if animation is turned on.

Must be an integer value, such as "100".

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

This corresponds to the global attribute resource symbol animationDuration.

Related methods:

setAnimationDuration(int)

android:gravity

Specifies how an object should position its content, on both the X and Y axes, within its own bounds.

Must be one or more (separated by '|') of the following constant values.

Constant	Value	Description
`top`	0x30	Push object to the top of its container, not changing its size.
`bottom`	0x50	Push object to the bottom of its container, not changing its size.
`left`	0x03	Push object to the left of its container, not changing its size.
`right`	0x05	Push object to the right of its container, not changing its size.
`center_vertical`	0x10	Place object in the vertical center of its container, not changing its size.
`fill_vertical`	0x70	Grow the vertical size of the object if needed so it completely fills its container.
`center_horizontal`	0x01	Place object in the horizontal center of its container, not changing its size.
`fill_horizontal`	0x07	Grow the horizontal size of the object if needed so it completely fills its container.
`center`	0x11	Place the object in the center of its container in both the vertical and horizontal axis, not changing its size.
`fill`	0x77	Grow the horizontal and vertical size of the object if needed so it completely fills its container.
`clip_vertical`	0x80	Additional option that can be set to have the top and/or bottom edges of the child clipped to its container's bounds. The clip will be based on the vertical gravity: a top gravity will clip the bottom edge, a bottom gravity will clip the top edge, and neither will clip both edges.
`clip_horizontal`	0x08	Additional option that can be set to have the left and/or right edges of the child clipped to its container's bounds. The clip will be based on the horizontal gravity: a left gravity will clip the right edge, a right gravity will clip the left edge, and neither will clip both edges.
`start`	0x00800003	Push object to the beginning of its container, not changing its size.
`end`	0x00800005	Push object to the end of its container, not changing its size.

This corresponds to the global attribute resource symbol gravity.

Related methods:

setGravity(int)

android:spacing

Related methods:

setSpacing(int)

android:unselectedAlpha

Sets the alpha on the items that are not selected.

Must be a floating point value, such as "1.2".

This may also be a reference to a resource (in the form "@[package:]type:name") or theme attribute (in the form "?[package:][type:]name") containing a value of this type.

This corresponds to the global attribute resource symbol unselectedAlpha.

Related methods:

setUnselectedAlpha(float)

Public constructors

Gallery

Added in API level 1

Gallery (Context context)

Parameters
`context`	`Context`

Gallery

Added in API level 1

Gallery (Context context, 
                AttributeSet attrs)

Parameters
`context`	`Context`
`attrs`	`AttributeSet`

Gallery

Added in API level 1

Gallery (Context context, 
                AttributeSet attrs, 
                int defStyleAttr)

Parameters
`context`	`Context`
`attrs`	`AttributeSet`
`defStyleAttr`	`int`

Gallery

Added in API level 21

Gallery (Context context, 
                AttributeSet attrs, 
                int defStyleAttr, 
                int defStyleRes)

Parameters
`context`	`Context`
`attrs`	`AttributeSet`
`defStyleAttr`	`int`
`defStyleRes`	`int`

Public methods

dispatchKeyEvent

Added in API level 1

boolean dispatchKeyEvent (KeyEvent event)

Dispatch a key event to the next view on the focus path. This path runs from the top of the view tree down to the currently focused view. If this view has focus, it will dispatch to itself. Otherwise it will dispatch the next node down the focus path. This method also fires any key listeners.

Parameters
`event`	`KeyEvent`: The key event to be dispatched.

Returns
`boolean`	True if the event was handled, false otherwise.

dispatchSetSelected

Added in API level 1

void dispatchSetSelected (boolean selected)

Dispatch setSelected to all of this View's children.

Parameters
`selected`	`boolean`: The new selected state

generateLayoutParams

Added in API level 1

ViewGroup.LayoutParams generateLayoutParams (AttributeSet attrs)

Returns a new set of layout parameters based on the supplied attributes set.

Parameters
`attrs`	`AttributeSet`: the attributes to build the layout parameters from

Returns
`ViewGroup.LayoutParams`	an instance of `ViewGroup.LayoutParams` or one of its descendants

getAccessibilityClassName

Added in API level 23

CharSequence getAccessibilityClassName ()

Return the class name of this object to be used for accessibility purposes. Subclasses should only override this if they are implementing something that should be seen as a completely new class of view when used by accessibility, unrelated to the class it is deriving from. This is used to fill in AccessibilityNodeInfo.setClassName.

Returns
`CharSequence`

onDown

Added in API level 1

boolean onDown (MotionEvent e)

Notified when a tap occurs with the down MotionEvent that triggered it. This will be triggered immediately for every down event. All other events should be preceded by this.

Parameters
`e`	`MotionEvent`: The down motion event.

Returns
`boolean`

onFling

Added in API level 1

boolean onFling (MotionEvent e1, 
                MotionEvent e2, 
                float velocityX, 
                float velocityY)

Notified of a fling event when it occurs with the initial on down MotionEvent and the matching up MotionEvent. The calculated velocity is supplied along the x and y axis in pixels per second.

Parameters
`e1`	`MotionEvent`: The first down motion event that started the fling.
`e2`	`MotionEvent`: The move motion event that triggered the current onFling.
`velocityX`	`float`: The velocity of this fling measured in pixels per second along the x axis.
`velocityY`	`float`: The velocity of this fling measured in pixels per second along the y axis.

Returns
`boolean`	true if the event is consumed, else false

onKeyDown

Added in API level 1

boolean onKeyDown (int keyCode, 
                KeyEvent event)

Handles left, right, and clicking

Parameters
`keyCode`	`int`: a key code that represents the button pressed, from `KeyEvent`
`event`	`KeyEvent`: the KeyEvent object that defines the button action

Returns
`boolean`	If you handled the event, return true. If you want to allow the event to be handled by the next receiver, return false.

See also:

onKeyDown(int, KeyEvent)

onKeyUp

Added in API level 1

boolean onKeyUp (int keyCode, 
                KeyEvent event)

Default implementation of KeyEvent.Callback.onKeyUp(): perform clicking of the view when KEYCODE_DPAD_CENTER, KEYCODE_ENTER or KEYCODE_SPACE is released.

Key presses in software keyboards will generally NOT trigger this listener, although some may elect to do so in some situations. Do not rely on this to catch software key presses.

Parameters
`keyCode`	`int`: A key code that represents the button pressed, from `KeyEvent`.
`event`	`KeyEvent`: The KeyEvent object that defines the button action.

Returns
`boolean`	If you handled the event, return true. If you want to allow the event to be handled by the next receiver, return false.

onLongPress

Added in API level 1

void onLongPress (MotionEvent e)

Notified when a long press occurs with the initial on down MotionEvent that trigged it.

Parameters
`e`	`MotionEvent`: The initial on down motion event that started the longpress.

onScroll

Added in API level 1

boolean onScroll (MotionEvent e1, 
                MotionEvent e2, 
                float distanceX, 
                float distanceY)

Notified when a scroll occurs with the initial on down MotionEvent and the current move MotionEvent. The distance in x and y is also supplied for convenience.

Parameters
`e1`	`MotionEvent`: The first down motion event that started the scrolling.
`e2`	`MotionEvent`: The move motion event that triggered the current onScroll.
`distanceX`	`float`: The distance along the X axis that has been scrolled since the last call to onScroll. This is NOT the distance between `e1` and `e2`.
`distanceY`	`float`: The distance along the Y axis that has been scrolled since the last call to onScroll. This is NOT the distance between `e1` and `e2`.

Returns
`boolean`	true if the event is consumed, else false

onShowPress

Added in API level 1

void onShowPress (MotionEvent e)

The user has performed a down MotionEvent and not performed a move or up yet. This event is commonly used to provide visual feedback to the user to let them know that their action has been recognized i.e. highlight an element.

Parameters
`e`	`MotionEvent`: The down motion event

onSingleTapUp

Added in API level 1

boolean onSingleTapUp (MotionEvent e)

Notified when a tap occurs with the up MotionEvent that triggered it.

Parameters
`e`	`MotionEvent`: The up motion event that completed the first tap

Returns
`boolean`	true if the event is consumed, else false

onTouchEvent

Added in API level 1

boolean onTouchEvent (MotionEvent event)

Implement this method to handle touch screen motion events.

If this method is used to detect click actions, it is recommended that the actions be performed by implementing and calling performClick(). This will ensure consistent system behavior, including:

obeying click sound preferences
dispatching OnClickListener calls
handling ACTION_CLICK when accessibility features are enabled

Parameters
`event`	`MotionEvent`: The motion event.

Returns
`boolean`	True if the event was handled, false otherwise.

setAnimationDuration

Added in API level 1

void setAnimationDuration (int animationDurationMillis)

Sets how long the transition animation should run when a child view changes position. Only relevant if animation is turned on.

Related XML Attributes:

android:animationDuration

Parameters
`animationDurationMillis`	`int`: The duration of the transition, in milliseconds.

setCallbackDuringFling

Added in API level 1

void setCallbackDuringFling (boolean shouldCallback)

Whether or not to callback on any getOnItemSelectedListener() while the items are being flinged. If false, only the final selected item will cause the callback. If true, all items between the first and the final will cause callbacks.

Parameters
`shouldCallback`	`boolean`: Whether or not to callback on the listener while the items are being flinged.

setGravity

Added in API level 1

void setGravity (int gravity)

Describes how the child views are aligned.

Related XML Attributes:

android:gravity

setSpacing

Added in API level 1

void setSpacing (int spacing)

Sets the spacing between items in a Gallery

Related XML Attributes:

android:spacing

Parameters
`spacing`	`int`: The spacing in pixels between items in the Gallery

setUnselectedAlpha

Added in API level 1

void setUnselectedAlpha (float unselectedAlpha)

Sets the alpha of items that are not selected in the Gallery.

Related XML Attributes:

android:unselectedAlpha

Parameters
`unselectedAlpha`	`float`: the alpha for the items that are not selected.

showContextMenu

Added in API level 1

boolean showContextMenu ()

Shows the context menu for this view.

Returns
`boolean`	`true` if the context menu was shown, `false` otherwise

showContextMenu

Added in API level 24

boolean showContextMenu (float x, 
                float y)

Shows the context menu for this view anchored to the specified view-relative coordinate.

Parameters
`x`	`float`: the X coordinate in pixels relative to the view to which the menu should be anchored, or `NaN` to disable anchoring
`y`	`float`: the Y coordinate in pixels relative to the view to which the menu should be anchored, or `NaN` to disable anchoring

Returns
`boolean`	`true` if the context menu was shown, `false` otherwise

showContextMenuForChild

Added in API level 1

boolean showContextMenuForChild (View originalView)

Shows the context menu for the specified view or its ancestors.

In most cases, a subclass does not need to override this. However, if the subclass is added directly to the window manager (for example, addView(View, android.view.ViewGroup.LayoutParams)) then it should override this and show the context menu.

Parameters
`originalView`	`View`: the source view where the context menu was first invoked

Returns
`boolean`	`true` if the context menu was shown, `false` otherwise

showContextMenuForChild

Added in API level 24

boolean showContextMenuForChild (View originalView, 
                float x, 
                float y)

Shows the context menu for the specified view or its ancestors anchored to the specified view-relative coordinate.

If a subclass overrides this method it should also override showContextMenuForChild(View).

Parameters
`originalView`	`View`: the source view where the context menu was first invoked
`x`	`float`: the X coordinate in pixels relative to the original view to which the menu should be anchored, or `NaN` to disable anchoring
`y`	`float`: the Y coordinate in pixels relative to the original view to which the menu should be anchored, or `NaN` to disable anchoring

Returns
`boolean`	`true` if the context menu was shown, `false` otherwise

Protected methods

checkLayoutParams

Added in API level 1

boolean checkLayoutParams (ViewGroup.LayoutParams p)

Parameters
`p`	`ViewGroup.LayoutParams`

Returns
`boolean`

computeHorizontalScrollExtent

Added in API level 1

int computeHorizontalScrollExtent ()

Compute the horizontal extent of the horizontal scrollbar's thumb within the horizontal range. This value is used to compute the length of the thumb within the scrollbar's track.

The range is expressed in arbitrary units that must be the same as the units used by computeHorizontalScrollRange() and computeHorizontalScrollOffset().

The default extent is the drawing width of this view.

Returns
`int`	the horizontal extent of the scrollbar's thumb

computeHorizontalScrollOffset

Added in API level 1

int computeHorizontalScrollOffset ()

Compute the horizontal offset of the horizontal scrollbar's thumb within the horizontal range. This value is used to compute the position of the thumb within the scrollbar's track.

The range is expressed in arbitrary units that must be the same as the units used by computeHorizontalScrollRange() and computeHorizontalScrollExtent().

The default offset is the scroll offset of this view.

Returns
`int`	the horizontal offset of the scrollbar's thumb

computeHorizontalScrollRange

Added in API level 1

int computeHorizontalScrollRange ()

Compute the horizontal range that the horizontal scrollbar represents.

The range is expressed in arbitrary units that must be the same as the units used by computeHorizontalScrollExtent() and computeHorizontalScrollOffset().

The default range is the drawing width of this view.

Returns
`int`	the total horizontal range represented by the horizontal scrollbar

dispatchSetPressed

Added in API level 1

void dispatchSetPressed (boolean pressed)

Dispatch setPressed to all of this View's children.

Parameters
`pressed`	`boolean`: The new pressed state

generateDefaultLayoutParams

Added in API level 1

ViewGroup.LayoutParams generateDefaultLayoutParams ()

Returns a set of default layout parameters. These parameters are requested when the View passed to addView(View) has no layout parameters already set. If null is returned, an exception is thrown from addView.

Returns
`ViewGroup.LayoutParams`	a set of default layout parameters or null

generateLayoutParams

Added in API level 1

ViewGroup.LayoutParams generateLayoutParams (ViewGroup.LayoutParams p)

Returns a safe set of layout parameters based on the supplied layout params. When a ViewGroup is passed a View whose layout params do not pass the test of checkLayoutParams(android.view.ViewGroup.LayoutParams), this method is invoked. This method should return a new set of layout params suitable for this ViewGroup, possibly by copying the appropriate attributes from the specified set of layout params.

Parameters
`p`	`ViewGroup.LayoutParams`: The layout parameters to convert into a suitable set of layout parameters for this ViewGroup.

Returns
`ViewGroup.LayoutParams`	an instance of `ViewGroup.LayoutParams` or one of its descendants

getChildDrawingOrder

Added in API level 1

int getChildDrawingOrder (int childCount, 
                int i)

Returns the index of the child to draw for this iteration. Override this if you want to change the drawing order of children. By default, it returns i.

NOTE: In order for this method to be called, you must enable child ordering first by calling setChildrenDrawingOrderEnabled(boolean).

Parameters
`childCount`	`int`
`i`	`int`: The current iteration.

Returns
`int`	The index of the child to draw this iteration.

getChildStaticTransformation

Added in API level 1

boolean getChildStaticTransformation (View child, 
                Transformation t)

Sets t to be the static transformation of the child, if set, returning a boolean to indicate whether a static transform was set. The default implementation simply returns false; subclasses may override this method for different behavior. setStaticTransformationsEnabled(boolean) must be set to true for this method to be called.

Parameters
`child`	`View`: The child view whose static transform is being requested
`t`	`Transformation`: The Transformation which will hold the result

Returns
`boolean`	true if the transformation was set, false otherwise

getContextMenuInfo

Added in API level 1

ContextMenu.ContextMenuInfo getContextMenuInfo ()

Views should implement this if they have extra information to associate with the context menu. The return result is supplied as a parameter to the onCreateContextMenu(ContextMenu, View, ContextMenuInfo) callback.

Returns
`ContextMenu.ContextMenuInfo`	Extra information about the item for which the context menu should be shown. This information will vary across different subclasses of View.

onAttachedToWindow

Added in API level 1

void onAttachedToWindow ()

This is called when the view is attached to a window. At this point it has a Surface and will start drawing. Note that this function is guaranteed to be called before onDraw(android.graphics.Canvas), however it may be called any time before the first onDraw -- including before or after onMeasure(int, int).

onFocusChanged

Added in API level 1

void onFocusChanged (boolean gainFocus, 
                int direction, 
                Rect previouslyFocusedRect)

Called by the view system when the focus state of this view changes. When the focus change event is caused by directional navigation, direction and previouslyFocusedRect provide insight into where the focus is coming from. When overriding, be sure to call up through to the super class so that the standard focus handling will occur.

Parameters
`gainFocus`	`boolean`: True if the View has focus; false otherwise.
`direction`	`int`: The direction focus has moved when requestFocus() is called to give this view focus. Values are `FOCUS_UP`, `FOCUS_DOWN`, `FOCUS_LEFT`, `FOCUS_RIGHT`, `FOCUS_FORWARD`, or `FOCUS_BACKWARD`. It may not always apply, in which case use the default.
`previouslyFocusedRect`	`Rect`: The rectangle, in this view's coordinate system, of the previously focused view. If applicable, this will be passed in as finer grained information about where the focus is coming from (in addition to direction). Will be `null` otherwise.

onLayout

Added in API level 1

void onLayout (boolean changed, 
                int l, 
                int t, 
                int r, 
                int b)

Called from layout when this view should assign a size and position to each of its children. Derived classes with children should override this method and call layout on each of their children.

Parameters
`changed`	`boolean`: This is a new size or position for this view
`l`	`int`: Left position, relative to parent
`t`	`int`: Top position, relative to parent
`r`	`int`: Right position, relative to parent
`b`	`int`: Bottom position, relative to parent

Most visited

Recently visited

Results for

Gallery

Summary

Nested classes

XML attributes

Inherited XML attributes

Inherited constants

Inherited fields

Public constructors

Public methods

Protected methods

Inherited methods

XML attributes

android:animationDuration

android:gravity

android:spacing

android:unselectedAlpha

Public constructors

Gallery

Gallery

Gallery

Gallery

Public methods

dispatchKeyEvent

dispatchSetSelected

generateLayoutParams

getAccessibilityClassName

onDown

onFling

onKeyDown

onKeyUp

onLongPress

onScroll

onShowPress

onSingleTapUp

onTouchEvent

setAnimationDuration

setCallbackDuringFling

setGravity

setSpacing

setUnselectedAlpha

showContextMenu

showContextMenu

showContextMenuForChild

showContextMenuForChild

Protected methods

checkLayoutParams

computeHorizontalScrollExtent

computeHorizontalScrollOffset

computeHorizontalScrollRange

dispatchSetPressed

generateDefaultLayoutParams

generateLayoutParams

getChildDrawingOrder

getChildStaticTransformation

getContextMenuInfo

onAttachedToWindow

onFocusChanged

onLayout