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ViewGroupCompat

public final class ViewGroupCompat
extends Object

java.lang.Object
↳	android.support.v4.view.ViewGroupCompat

Helper for accessing features in ViewGroup introduced after API level 4 in a backwards compatible fashion.

Summary

Constants
`int`	`LAYOUT_MODE_CLIP_BOUNDS` This constant is a `layoutMode`.
`int`	`LAYOUT_MODE_OPTICAL_BOUNDS` This constant is a `layoutMode`.

Public methods
`static int`	`getLayoutMode(ViewGroup group)` Returns the basis of alignment during layout operations on this ViewGroup: either `LAYOUT_MODE_CLIP_BOUNDS` or `LAYOUT_MODE_OPTICAL_BOUNDS`.
`static int`	`getNestedScrollAxes(ViewGroup group)` Return the current axes of nested scrolling for this ViewGroup.
`static boolean`	`isTransitionGroup(ViewGroup group)` Returns true if this ViewGroup should be considered as a single entity for removal when executing an Activity transition.
`static boolean`	`onRequestSendAccessibilityEvent(ViewGroup group, View child, AccessibilityEvent event)` Called when a child has requested sending an `AccessibilityEvent` and gives an opportunity to its parent to augment the event.
`static void`	`setLayoutMode(ViewGroup group, int mode)` Sets the basis of alignment during the layout of this ViewGroup.
`static void`	`setMotionEventSplittingEnabled(ViewGroup group, boolean split)` Enable or disable the splitting of MotionEvents to multiple children during touch event dispatch.
`static void`	`setTransitionGroup(ViewGroup group, boolean isTransitionGroup)` Changes whether or not this ViewGroup should be treated as a single entity during Activity Transitions.

Inherited methods

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.

Constants

LAYOUT_MODE_CLIP_BOUNDS

int LAYOUT_MODE_CLIP_BOUNDS

This constant is a layoutMode. Clip bounds are the raw values of left, top, right and bottom.

Constant Value: 0 (0x00000000)

LAYOUT_MODE_OPTICAL_BOUNDS

int LAYOUT_MODE_OPTICAL_BOUNDS

This constant is a layoutMode. Optical bounds describe where a widget appears to be. They sit inside the clip bounds which need to cover a larger area to allow other effects, such as shadows and glows, to be drawn.

Constant Value: 1 (0x00000001)

Public methods

getLayoutMode

int getLayoutMode (ViewGroup group)

Returns the basis of alignment during layout operations on this ViewGroup: either LAYOUT_MODE_CLIP_BOUNDS or LAYOUT_MODE_OPTICAL_BOUNDS.

If no layoutMode was explicitly set, either programmatically or in an XML resource, the method returns the layoutMode of the view's parent ViewGroup if such a parent exists, otherwise the method returns a default value of LAYOUT_MODE_CLIP_BOUNDS.

Parameters
`group`	`ViewGroup`

Returns
`int`	the layout mode to use during layout operations

See also:

setLayoutMode(ViewGroup, int)

getNestedScrollAxes

int getNestedScrollAxes (ViewGroup group)

Return the current axes of nested scrolling for this ViewGroup.

A ViewGroup returning something other than SCROLL_AXIS_NONE is currently acting as a nested scrolling parent for one or more descendant views in the hierarchy.

Parameters
`group`	`ViewGroup`

Returns
`int`	Flags indicating the current axes of nested scrolling

See also:

isTransitionGroup

boolean isTransitionGroup (ViewGroup group)

Returns true if this ViewGroup should be considered as a single entity for removal when executing an Activity transition. If this is false, child elements will move individually during the transition.

Parameters
`group`	`ViewGroup`

Returns
`boolean`

onRequestSendAccessibilityEvent

boolean onRequestSendAccessibilityEvent (ViewGroup group, 
                View child, 
                AccessibilityEvent event)

Called when a child has requested sending an AccessibilityEvent and gives an opportunity to its parent to augment the event.

If an AccessibilityDelegateCompat has been specified via calling setAccessibilityDelegate(View, AccessibilityDelegateCompat) its onRequestSendAccessibilityEvent(ViewGroup, View, AccessibilityEvent) is responsible for handling this call.

Parameters
`group`	`ViewGroup`: The group whose method to invoke.
`child`	`View`: The child which requests sending the event.
`event`	`AccessibilityEvent`: The event to be sent.

Returns
`boolean`	True if the event should be sent.

setLayoutMode

void setLayoutMode (ViewGroup group, 
                int mode)

Sets the basis of alignment during the layout of this ViewGroup. Valid values are either LAYOUT_MODE_CLIP_BOUNDS or LAYOUT_MODE_OPTICAL_BOUNDS.

Parameters
`group`	`ViewGroup`
`mode`	`int`: the layout mode to use during layout operations

See also:

getLayoutMode(ViewGroup)

setMotionEventSplittingEnabled

void setMotionEventSplittingEnabled (ViewGroup group, 
                boolean split)

Enable or disable the splitting of MotionEvents to multiple children during touch event dispatch. This behavior is enabled by default for applications that target an SDK version of 11 (Honeycomb) or newer. On earlier platform versions this feature was not supported and this method is a no-op.

When this option is enabled MotionEvents may be split and dispatched to different child views depending on where each pointer initially went down. This allows for user interactions such as scrolling two panes of content independently, chording of buttons, and performing independent gestures on different pieces of content.

Parameters
`group`	`ViewGroup`: ViewGroup to modify
`split`	`boolean`: `true` to allow MotionEvents to be split and dispatched to multiple child views. `false` to only allow one child view to be the target of any MotionEvent received by this ViewGroup.

setTransitionGroup

void setTransitionGroup (ViewGroup group, 
                boolean isTransitionGroup)

Changes whether or not this ViewGroup should be treated as a single entity during Activity Transitions.

Parameters
`group`	`ViewGroup`
`isTransitionGroup`	`boolean`: Whether or not the ViewGroup should be treated as a unit in Activity transitions. If false, the ViewGroup won't transition, only its children. If true, the entire ViewGroup will transition together.

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ViewGroupCompat

Summary

Constants

Public methods

Inherited methods

Constants

LAYOUT_MODE_CLIP_BOUNDS

LAYOUT_MODE_OPTICAL_BOUNDS

Public methods

getLayoutMode

getNestedScrollAxes

isTransitionGroup

onRequestSendAccessibilityEvent

setLayoutMode

setMotionEventSplittingEnabled

setTransitionGroup