added in version 22.1.0
belongs to Maven artifact com.android.support:support-fragment:28.0.0-alpha1

Fragment

public class Fragment
extends Object implements ComponentCallbacks, View.OnCreateContextMenuListener, LifecycleOwner, ViewModelStoreOwner

java.lang.Object
   ↳ android.support.v4.app.Fragment
Known Direct Subclasses
Known Indirect Subclasses


Static library support version of the framework's Fragment. Used to write apps that run on platforms prior to Android 3.0. When running on Android 3.0 or above, this implementation is still used; it does not try to switch to the framework's implementation. See the framework Fragment documentation for a class overview.

The main differences when using this support version instead of the framework version are:

Summary

Nested classes

class Fragment.InstantiationException

Thrown by instantiate(Context, String, Bundle) when there is an instantiation failure. 

class Fragment.SavedState

State information that has been retrieved from a fragment instance through FragmentManager.saveFragmentInstanceState

Public constructors

Fragment()

Default constructor.

Public methods

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 FragmentActivity getActivity()

Return the FragmentActivity 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 when the fragment was instantiated, 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.

Object getEnterTransition()

Returns the Transition that will be used to move Views into the initial scene.

Object 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.

final LayoutInflater getLayoutInflater()

Returns the cached LayoutInflater used to inflate Views of this Fragment.

Lifecycle getLifecycle()
LoaderManager getLoaderManager()

Return the LoaderManager for this fragment.

final Fragment getParentFragment()

Returns the parent Fragment containing this Fragment.

Object 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 requireActivity().getResources().

final boolean getRetainInstance()
Object 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.

Object getSharedElementEnterTransition()

Returns the Transition that will be used for shared elements transferred into the content Scene.

Object 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.

ViewModelStore getViewModelStore()
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 isStateSaved()

Returns true if this fragment is added and its state has already been saved by its host.

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 24.1.0. See onAttach(Context).

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)
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.

Animation onCreateAnimation(int transit, boolean enter, int nextAnim)

Called when a fragment loads an animation.

Animator onCreateAnimator(int transit, boolean enter, int nextAnim)

Called when a fragment loads an animator.

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 Fragment host'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.

LayoutInflater onGetLayoutInflater(Bundle savedInstanceState)

Returns the LayoutInflater used to inflate Views of this Fragment.

void onHiddenChanged(boolean hidden)

Called when the hidden state (as returned by isHidden() of the fragment has changed.

void onInflate(Activity activity, AttributeSet attrs, Bundle savedInstanceState)

This method was deprecated in API level 24.1.0. See onInflate(Context, AttributeSet, Bundle).

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()
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 Fragment host'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 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 postponeEnterTransition()

Postpone the entering Fragment transition until startPostponedEnterTransition() or executePendingTransactions() has been called.

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.

final FragmentActivity requireActivity()

Return the FragmentActivity this fragment is currently associated with.

final Context