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GuidedStepFragment

public class GuidedStepFragment
extends Fragment

java.lang.Object
↳	android.app.Fragment
	↳	android.support.v17.leanback.app.GuidedStepFragment

A GuidedStepFragment is used to guide the user through a decision or series of decisions. It is composed of a guidance view on the left and a view on the right containing a list of possible actions.

Basic Usage

Clients of GuidedStepFragment must create a custom subclass to attach to their Activities. This custom subclass provides the information necessary to construct the user interface and respond to user actions. At a minimum, subclasses should override:

onCreateGuidance(Bundle), to provide instructions to the user
onCreateActions(List, Bundle), to provide a set of GuidedActions the user can take
onGuidedActionClicked(GuidedAction), to respond to those actions

Clients use following helper functions to add GuidedStepFragment to Activity or FragmentManager:

addAsRoot(Activity, GuidedStepFragment, int), to be called during Activity onCreate, adds GuidedStepFragment as the first Fragment in activity.
add(FragmentManager, GuidedStepFragment) or add(FragmentManager, GuidedStepFragment, int), to add GuidedStepFragment on top of existing Fragments or replacing existing GuidedStepFragment when moving forward to next step.
finishGuidedStepFragments() can either finish the activity or pop all GuidedStepFragment from stack.
If app chooses not to use the helper function, it is the app's responsibility to call setUiStyle(int) to select fragment transition and remember the stack entry where it need pops to.

Theming and Stylists

GuidedStepFragment delegates its visual styling to classes called stylists. The GuidanceStylist is responsible for the left guidance view, while the GuidedActionsStylist is responsible for the right actions view. The stylists use theme attributes to derive values associated with the presentation, such as colors, animations, etc. Most simple visual aspects of GuidanceStylist and GuidedActionsStylist can be customized via theming; see their documentation for more information.

GuidedStepFragments must have access to an appropriate theme in order for the stylists to function properly. Specifically, the fragment must receive Theme_Leanback_GuidedStep, or a theme whose parent is is set to that theme. Themes can be provided in one of three ways:

The simplest way is to set the theme for the host Activity to the GuidedStep theme or a theme that derives from it.
If the Activity already has a theme and setting its parent theme is inconvenient, the existing Activity theme can have an entry added for the attribute LeanbackGuidedStepTheme_guidedStepTheme. If present, this theme will be used by GuidedStepFragment as an overlay to the Activity's theme.
Finally, custom subclasses of GuidedStepFragment may provide a theme through the onProvideTheme() method. This can be useful if a subclass is used across multiple Activities.

If the theme is provided in multiple ways, the onProvideTheme override has priority, followed by the Activty's theme. (Themes whose parent theme is already set to the guided step theme do not need to set the guidedStepTheme attribute; if set, it will be ignored.)

If themes do not provide enough customizability, the stylists themselves may be subclassed and provided to the GuidedStepFragment through the onCreateGuidanceStylist() and onCreateActionsStylist() methods. The stylists have simple hooks so that subclasses may override layout files; subclasses may also have more complex logic to determine styling.

Guided sequences

GuidedStepFragments can be grouped together to provide a guided sequence. GuidedStepFragments grouped as a sequence use custom animations provided by GuidanceStylist and GuidedActionsStylist (or subclasses) during transitions between steps. Clients should use add(FragmentManager, GuidedStepFragment) to place subsequent GuidedFragments onto the fragment stack so that custom animations are properly configured. (Custom animations are triggered automatically when the fragment stack is subsequently popped by any normal mechanism.)

Note: Currently GuidedStepFragments grouped in this way must all be defined programmatically, rather than in XML. This restriction may be removed in the future.

See also:

Summary

XML attributes
`android.support.v17.leanback:guidedActionContentWidthWeight`	Theme attribute used for the weight of actions.
`android.support.v17.leanback:guidedActionContentWidthWeightTwoPanels`	Theme attribute used for the weight of actions when there are two panels.
`android.support.v17.leanback:guidedActionsBackground`	Theme attribute for the background of GuidedActions.
`android.support.v17.leanback:guidedActionsBackgroundDark`	Theme attribute for the dark version background of GuidedActions.
`android.support.v17.leanback:guidedActionsElevation`	Theme attribute for the shadow elevation of GuidedActions.
`android.support.v17.leanback:guidedStepBackground`	Theme attribute of background drawable used by GuidedStepFragment.
`android.support.v17.leanback:guidedStepTheme`	Theme attribute for the overall theme used in a GuidedStepFragment.

Inherited XML attributes

From class


  android.app.Fragment

Constants
`String`	`EXTRA_UI_STYLE` Fragment argument name for UI style.
`int`	`UI_STYLE_ACTIVITY_ROOT` One possible value of argument `EXTRA_UI_STYLE`.
`int`	`UI_STYLE_DEFAULT` This constant is deprecated. Same value as `UI_STYLE_REPLACE`.
`int`	`UI_STYLE_ENTRANCE` Default value for argument `EXTRA_UI_STYLE`.
`int`	`UI_STYLE_REPLACE` This is the case that we use GuidedStepFragment to replace another existing GuidedStepFragment when moving forward to next step.

Inherited constants

From interface


    android.content.ComponentCallbacks2

Public constructors
`GuidedStepFragment()`

Public methods
`static int`	`add(FragmentManager fragmentManager, GuidedStepFragment fragment, int id)` Adds the specified GuidedStepFragment to the fragment stack, replacing any existing GuidedStepFragments in the stack, and configuring the fragment-to-fragment custom transitions.
`static int`	`add(FragmentManager fragmentManager, GuidedStepFragment fragment)` Adds the specified GuidedStepFragment to the fragment stack, replacing any existing GuidedStepFragments in the stack, and configuring the fragment-to-fragment custom transitions.
`static int`	`addAsRoot(Activity activity, GuidedStepFragment fragment, int id)` Adds the specified GuidedStepFragment as content of Activity; no backstack entry is added so the activity will be dismissed when BACK key is pressed.
`void`	`collapseSubActions()` Collapse sub actions list.
`void`	`expandSubActions(GuidedAction action)` Expand a given action's sub actions list.
`GuidedAction`	`findActionById(long id)` Find GuidedAction by Id.
`int`	`findActionPositionById(long id)` Find GuidedAction position in array by Id.
`GuidedAction`	`findButtonActionById(long id)` Find button GuidedAction by Id.
`int`	`findButtonActionPositionById(long id)` Find button GuidedAction position in array by Id.
`void`	`finishGuidedStepFragments()` Convenient method to close GuidedStepFragments on top of other content or finish Activity if GuidedStepFragments were started in a separate activity.
`View`	`getActionItemView(int position)` Returns the view corresponding to the action at the indicated position in the list of actions for this fragment.
`List<GuidedAction>`	`getActions()` Returns the list of GuidedActions that the user may take in this fragment.
`View`	`getButtonActionItemView(int position)` Returns the view corresponding to the button action at the indicated position in the list of actions for this fragment.
`List<GuidedAction>`	`getButtonActions()` Returns the list of button GuidedActions that the user may take in this fragment.
`static GuidedStepFragment`	`getCurrentGuidedStepFragment(FragmentManager fm)` Returns the current GuidedStepFragment on the fragment transaction stack.
`GuidanceStylist`	`getGuidanceStylist()` Returns the GuidanceStylist that displays guidance information for the user.
`GuidedActionsStylist`	`getGuidedActionsStylist()` Returns the GuidedActionsStylist that displays the actions the user may take.
`GuidedActionsStylist`	`getGuidedButtonActionsStylist()` Returns the GuidedActionsStylist that displays the button actions the user may take.
`int`	`getSelectedActionPosition()` Returns the position if the currently selected GuidedAction.
`int`	`getSelectedButtonActionPosition()` Returns the position if the currently selected button GuidedAction.
`int`	`getUiStyle()` Read UI style from fragment arguments.
`boolean`	`isFocusOutEndAllowed()` Returns true if allows focus out of end edge of GuidedStepFragment, false otherwise.
`boolean`	`isFocusOutStartAllowed()` Returns true if allows focus out of start edge of GuidedStepFragment, false otherwise.
`boolean`	`isSubActionsExpanded()`
`void`	`notifyActionChanged(int position)` Notify an action has changed and update its UI.
`void`	`notifyButtonActionChanged(int position)` Notify an button action has changed and update its UI.
`void`	`onCreate(Bundle savedInstanceState)` Called to do initial creation of a fragment.
`void`	`onCreateActions(List<GuidedAction> actions, Bundle savedInstanceState)` Fills out the set of actions available to the user.
`GuidedActionsStylist`	`onCreateActionsStylist()` Creates the presenter used to style the guided actions panel.
`View`	`onCreateBackgroundView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)` Called by onCreateView to inflate background view.
`void`	`onCreateButtonActions(List<GuidedAction> actions, Bundle savedInstanceState)` Fills out the set of actions shown at right available to the user.
`GuidedActionsStylist`	`onCreateButtonActionsStylist()` Creates the presenter used to style a sided actions panel for button only.
`GuidanceStylist.Guidance`	`onCreateGuidance(Bundle savedInstanceState)` Returns the information required to provide guidance to the user.
`GuidanceStylist`	`onCreateGuidanceStylist()` Creates the presenter used to style the guidance panel.
`View`	`onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)` Called to have the fragment instantiate its user interface view.
`void`	`onDestroyView()` Called when the view previously created by `onCreateView(LayoutInflater, ViewGroup, Bundle)` has been detached from the fragment.
`void`	`onGuidedActionClicked(GuidedAction action)` Callback invoked when an action is taken by the user.
`void`	`onGuidedActionEditCanceled(GuidedAction action)` Callback invoked when an action has been canceled editing, for example when user closes IME window by BACK key.
`void`	`onGuidedActionEdited(GuidedAction action)` This method is deprecated. Override `onGuidedActionEditedAndProceed(GuidedAction)` and/or `onGuidedActionEditCanceled(GuidedAction)`.
`long`	`onGuidedActionEditedAndProceed(GuidedAction action)` Callback invoked when an action has been edited, for example when user clicks confirm button in IME window.
`void`	`onGuidedActionFocused(GuidedAction action)` Callback invoked when an action is focused (made to be the current selection) by the user.
`int`	`onProvideTheme()` Returns the theme used for styling the fragment.
`void`	`onResume()` Called when the fragment is visible to the user and actively running.
`void`	`onSaveInstanceState(Bundle outState)` Called to ask the fragment to save its current dynamic state, so it can later be reconstructed in a new instance of its process is restarted.
`boolean`	`onSubGuidedActionClicked(GuidedAction action)` Callback invoked when an action in sub actions is taken by the user.
`void`	`popBackStackToGuidedStepFragment(Class guidedStepFragmentClass, int flags)` Convenient method to pop to fragment with Given class.
`void`	`setActions(List<GuidedAction> actions)` Sets the list of GuidedActions that the user may take in this fragment.
`void`	`setButtonActions(List<GuidedAction> actions)` Sets the list of button GuidedActions that the user may take in this fragment.
`void`	`setSelectedActionPosition(int position)` Scrolls the action list to the position indicated, selecting that action's view.
`void`	`setSelectedButtonActionPosition(int position)` Scrolls the action list to the position indicated, selecting that button action's view.
`void`	`setUiStyle(int style)` Set UI style to fragment arguments.

Protected methods
`void`	`onAddSharedElementTransition(FragmentTransaction ft, GuidedStepFragment disappearing)` Called when this fragment is added to FragmentTransaction with `UI_STYLE_REPLACE` (aka when the GuidedStepFragment replacing an existing GuidedStepFragment).
`void`	`onProvideFragmentTransitions()` Called by Constructor to provide fragment transitions.

Inherited methods

From class


  
    android.app.Fragment

`void`	`dump(String prefix, FileDescriptor fd, PrintWriter writer, String[] args)` Print the Fragments's state into the given stream.
`final boolean`	`equals(Object o)` Subclasses can not override equals().
`final Activity`	`getActivity()` Return the Activity this fragment is currently associated with.
`boolean`	`getAllowEnterTransitionOverlap()` Returns whether the the exit transition and enter transition overlap or not.
`boolean`	`getAllowReturnTransitionOverlap()` Returns whether the the return transition and reenter transition overlap or not.
`final Bundle`	`getArguments()` Return the arguments supplied to `setArguments(Bundle)`, if any.
`final FragmentManager`	`getChildFragmentManager()` Return a private FragmentManager for placing and managing Fragments inside of this Fragment.
`Context`	`getContext()` Return the `Context` this fragment is currently associated with.
`Transition`	`getEnterTransition()` Returns the Transition that will be used to move Views into the initial scene.
`Transition`	`getExitTransition()` Returns the Transition that will be used to move Views out of the scene when the fragment is removed, hidden, or detached when not popping the back stack.
`final FragmentManager`	`getFragmentManager()` Return the FragmentManager for interacting with fragments associated with this fragment's activity.
`final Object`	`getHost()` Return the host object of this fragment.
`final int`	`getId()` Return the identifier this fragment is known by.
`LoaderManager`	`getLoaderManager()` Return the LoaderManager for this fragment, creating it if needed.
`final Fragment`	`getParentFragment()` Returns the parent Fragment containing this Fragment.
`Transition`	`getReenterTransition()` Returns the Transition that will be used to move Views in to the scene when returning due to popping a back stack.
`final Resources`	`getResources()` Return `getActivity().getResources()`.
`final boolean`	`getRetainInstance()`
`Transition`	`getReturnTransition()` Returns the Transition that will be used to move Views out of the scene when the Fragment is preparing to be removed, hidden, or detached because of popping the back stack.
`Transition`	`getSharedElementEnterTransition()` Returns the Transition that will be used for shared elements transferred into the content Scene.
`Transition`	`getSharedElementReturnTransition()` Return the Transition that will be used for shared elements transferred back during a pop of the back stack.
`final String`	`getString(int resId, Object... formatArgs)` Return a localized formatted string from the application's package's default string table, substituting the format arguments as defined in `Formatter` and `format(String, Object...)`.
`final String`	`getString(int resId)` Return a localized string from the application's package's default string table.
`final String`	`getTag()` Get the tag name of the fragment, if specified.
`final Fragment`	`getTargetFragment()` Return the target fragment set by `setTargetFragment(Fragment, int)`.
`final int`	`getTargetRequestCode()` Return the target request code set by `setTargetFragment(Fragment, int)`.
`final CharSequence`	`getText(int resId)` Return a localized, styled CharSequence from the application's package's default string table.
`boolean`	`getUserVisibleHint()`
`View`	`getView()` Get the root view for the fragment's layout (the one returned by `onCreateView(LayoutInflater, ViewGroup, Bundle)`), if provided.
`final int`	`hashCode()` Subclasses can not override hashCode().
`static Fragment`	`instantiate(Context context, String fname)` Like `instantiate(Context, String, Bundle)` but with a null argument Bundle.
`static Fragment`	`instantiate(Context context, String fname, Bundle args)` Create a new instance of a Fragment with the given class name.
`final boolean`	`isAdded()` Return true if the fragment is currently added to its activity.
`final boolean`	`isDetached()` Return true if the fragment has been explicitly detached from the UI.
`final boolean`	`isHidden()` Return true if the fragment has been hidden.
`final boolean`	`isInLayout()` Return true if the layout is included as part of an activity view hierarchy via the <fragment> tag.
`final boolean`	`isRemoving()` Return true if this fragment is currently being removed from its activity.
`final boolean`	`isResumed()` Return true if the fragment is in the resumed state.
`final boolean`	`isVisible()` Return true if the fragment is currently visible to the user.
`void`	`onActivityCreated(Bundle savedInstanceState)` Called when the fragment's activity has been created and this fragment's view hierarchy instantiated.
`void`	`onActivityResult(int requestCode, int resultCode, Intent data)` Receive the result from a previous call to `startActivityForResult(Intent, int)`.
`void`	`onAttach(Activity activity)` This method was deprecated in API level 23. Use `onAttach(Context)` instead.
`void`	`onAttach(Context context)` Called when a fragment is first attached to its context.
`void`	`onAttachFragment(Fragment childFragment)` Called when a fragment is attached as a child of this fragment.
`void`	`onConfigurationChanged(Configuration newConfig)` Called by the system when the device configuration changes while your component is running.
`boolean`	`onContextItemSelected(MenuItem item)` This hook is called whenever an item in a context menu is selected.
`void`	`onCreate(Bundle savedInstanceState)` Called to do initial creation of a fragment.
`Animator`	`onCreateAnimator(int transit, boolean enter, int nextAnim)` Called when a fragment loads an animation.
`void`	`onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo)` Called when a context menu for the `view` is about to be shown.
`void`	`onCreateOptionsMenu(Menu menu, MenuInflater inflater)` Initialize the contents of the Activity's standard options menu.
`View`	`onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)` Called to have the fragment instantiate its user interface view.
`void`	`onDestroy()` Called when the fragment is no longer in use.
`void`	`onDestroyOptionsMenu()` Called when this fragment's option menu items are no longer being included in the overall options menu.
`void`	`onDestroyView()` Called when the view previously created by `onCreateView(LayoutInflater, ViewGroup, Bundle)` has been detached from the fragment.
`void`	`onDetach()` Called when the fragment is no longer attached to its activity.
`void`	`onHiddenChanged(boolean hidden)` Called when the hidden state (as returned by `isHidden()` of the fragment has changed.
`void`	`onInflate(AttributeSet attrs, Bundle savedInstanceState)` This method was deprecated in API level 12. Use `onInflate(Context, AttributeSet, Bundle)` instead.
`void`	`onInflate(Activity activity, AttributeSet attrs, Bundle savedInstanceState)` This method was deprecated in API level 23. Use `onInflate(Context, AttributeSet, Bundle)` instead.
`void`	`onInflate(Context context, AttributeSet attrs, Bundle savedInstanceState)` Called when a fragment is being created as part of a view layout inflation, typically from setting the content view of an activity.
`void`	`onLowMemory()` This is called when the overall system is running low on memory, and actively running processes should trim their memory usage.
`void`	`onMultiWindowModeChanged(boolean isInMultiWindowMode)` Called when the Fragment's activity changes from fullscreen mode to multi-window mode and visa-versa.
`boolean`	`onOptionsItemSelected(MenuItem item)` This hook is called whenever an item in your options menu is selected.
`void`	`onOptionsMenuClosed(Menu menu)` This hook is called whenever the options menu is being closed (either by the user canceling the menu with the back/menu button, or when an item is selected).
`void`	`onPause()` Called when the Fragment is no longer resumed.
`void`	`onPictureInPictureModeChanged(boolean isInPictureInPictureMode)` Called by the system when the activity changes to and from picture-in-picture mode.
`void`	`onPrepareOptionsMenu(Menu menu)` Prepare the Screen's standard options menu to be displayed.
`void`	`onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults)` Callback for the result from requesting permissions.
`void`	`onResume()` Called when the fragment is visible to the user and actively running.
`void`	`onSaveInstanceState(Bundle outState)` Called to ask the fragment to save its current dynamic state, so it can later be reconstructed in a new instance of its process is restarted.
`void`	`onStart()` Called when the Fragment is visible to the user.
`void`	`onStop()` Called when the Fragment is no longer started.
`void`	`onTrimMemory(int level)` Called when the operating system has determined that it is a good time for a process to trim unneeded memory from its process.
`void`	`onViewCreated(View view, Bundle savedInstanceState)` Called immediately after `onCreateView(LayoutInflater, ViewGroup, Bundle)` has returned, but before any saved state has been restored in to the view.
`void`	`onViewStateRestored(Bundle savedInstanceState)` Called when all saved state has been restored into the view hierarchy of the fragment.
`void`	`registerForContextMenu(View view)` Registers a context menu to be shown for the given view (multiple views can show the context menu).
`final void`	`requestPermissions(String[] permissions, int requestCode)` Requests permissions to be granted to this application.
`void`	`setAllowEnterTransitionOverlap(boolean allow)` Sets whether the the exit transition and enter transition overlap or not.
`void`	`setAllowReturnTransitionOverlap(boolean allow)` Sets whether the the return transition and reenter transition overlap or not.
`void`	`setArguments(Bundle args)` Supply the construction arguments for this fragment.
`void`	`setEnterSharedElementCallback(SharedElementCallback callback)` When custom transitions are used with Fragments, the enter transition callback is called when this Fragment is attached or detached when not popping the back stack.
`void`	`setEnterTransition(Transition transition)` Sets the Transition that will be used to move Views into the initial scene.
`void`	`setExitSharedElementCallback(SharedElementCallback callback)` When custom transitions are used with Fragments, the exit transition callback is called when this Fragment is attached or detached when popping the back stack.
`void`	`setExitTransition(Transition transition)` Sets the Transition that will be used to move Views out of the scene when the fragment is removed, hidden, or detached when not popping the back stack.
`void`	`setHasOptionsMenu(boolean hasMenu)` Report that this fragment would like to participate in populating the options menu by receiving a call to `onCreateOptionsMenu(Menu, MenuInflater)` and related methods.
`void`	`setInitialSavedState(Fragment.SavedState state)` Set the initial saved state that this Fragment should restore itself from when first being constructed, as returned by `FragmentManager.saveFragmentInstanceState`.
`void`	`setMenuVisibility(boolean menuVisible)` Set a hint for whether this fragment's menu should be visible.
`void`	`setReenterTransition(Transition transition)` Sets the Transition that will be used to move Views in to the scene when returning due to popping a back stack.
`void`	`setRetainInstance(boolean retain)` Control whether a fragment instance is retained across Activity re-creation (such as from a configuration change).
`void`	`setReturnTransition(Transition transition)` Sets the Transition that will be used to move Views out of the scene when the Fragment is preparing to be removed, hidden, or detached because of popping the back stack.
`void`	`setSharedElementEnterTransition(Transition transition)` Sets the Transition that will be used for shared elements transferred into the content Scene.
`void`	`setSharedElementReturnTransition(Transition transition)` Sets the Transition that will be used for shared elements transferred back during a pop of the back stack.
`void`	`setTargetFragment(Fragment fragment, int requestCode)` Optional target for this fragment.
`void`	`setUserVisibleHint(boolean isVisibleToUser)` Set a hint to the system about whether this fragment's UI is currently visible to the user.
`boolean`	`shouldShowRequestPermissionRationale(String permission)` Gets whether you should show UI with rationale for requesting a permission.
`void`	`startActivity(Intent intent)` Call `startActivity(Intent)` from the fragment's containing Activity.
`void`	`startActivity(Intent intent, Bundle options)` Call `startActivity(Intent, Bundle)` from the fragment's containing Activity.
`void`	`startActivityForResult(Intent intent, int requestCode)` Call `startActivityForResult(Intent, int)` from the fragment's containing Activity.
`void`	`startActivityForResult(Intent intent, int requestCode, Bundle options)` Call `startActivityForResult(Intent, int, Bundle)` from the fragment's containing Activity.
`void`	`startIntentSenderForResult(IntentSender intent, int requestCode, Intent fillInIntent, int flagsMask, int flagsValues, int extraFlags, Bundle options)` Call `startIntentSenderForResult(IntentSender, int, Intent, int, int, int, Bundle)` from the fragment's containing Activity.
`String`	`toString()` Returns a string representation of the object.
`void`	`unregisterForContextMenu(View view)` Prevents a context menu to be shown for the given view.

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.content.ComponentCallbacks2

From interface


  
    android.view.View.OnCreateContextMenuListener

From interface


  
    android.content.ComponentCallbacks