File	Doc	Category	Size	Date	Package
FragmentManager.java	API Doc	Android 5.1 API	86978	Thu Mar 12 22:22:56 GMT 2015	android.support.v4.app

FragmentManager

• java.lang.Object

Fields Summary
public static final int	POP_BACK_STACK_INCLUSIVE Flag for {@link #popBackStack(String, int)} and {@link #popBackStack(int, int)}: If set, and the name or ID of a back stack entry has been supplied, then all matching entries will be consumed until one that doesn't match is found or the bottom of the stack is reached. Otherwise, all entries up to but not including that entry will be removed.

Constructors Summary

Methods Summary
public abstract void	addOnBackStackChangedListener(android.support.v4.app.FragmentManager$OnBackStackChangedListener listener) Add a new listener for changes to the fragment back stack.
public abstract FragmentTransaction	beginTransaction() Start a series of edit operations on the Fragments associated with this FragmentManager. Note: A fragment transaction can only be created/committed prior to an activity saving its state. If you try to commit a transaction after {@link FragmentActivity#onSaveInstanceState FragmentActivity.onSaveInstanceState()} (and prior to a following {@link FragmentActivity#onStart FragmentActivity.onStart} or {@link FragmentActivity#onResume FragmentActivity.onResume()}, you will get an error. This is because the framework takes care of saving your current fragments in the state, and if changes are made after the state is saved then they will be lost.
public abstract void	dump(java.lang.String prefix, java.io.FileDescriptor fd, java.io.PrintWriter writer, java.lang.String[] args) Print the FragmentManager's state into the given stream. param prefix Text to print at the front of each line. param fd The raw file descriptor that the dump is being sent to. param writer A PrintWriter to which the dump is to be set. param args Additional arguments to the dump request.
public static void	enableDebugLogging(boolean enabled) Control whether the framework's internal fragment manager debugging logs are turned on. If enabled, you will see output in logcat as the framework performs fragment operations. FragmentManagerImpl.DEBUG = enabled;
public abstract boolean	executePendingTransactions() After a {@link FragmentTransaction} is committed with {@link FragmentTransaction#commit FragmentTransaction.commit()}, it is scheduled to be executed asynchronously on the process's main thread. If you want to immediately executing any such pending operations, you can call this function (only from the main thread) to do so. Note that all callbacks and other related behavior will be done from within this call, so be careful about where this is called from. return Returns true if there were any pending transactions to be executed.
public abstract Fragment	findFragmentById(int id) Finds a fragment that was identified by the given id either when inflated from XML or as the container ID when added in a transaction. This first searches through fragments that are currently added to the manager's activity; if no such fragment is found, then all fragments currently on the back stack associated with this ID are searched. return The fragment if found or null otherwise.
public abstract Fragment	findFragmentByTag(java.lang.String tag) Finds a fragment that was identified by the given tag either when inflated from XML or as supplied when added in a transaction. This first searches through fragments that are currently added to the manager's activity; if no such fragment is found, then all fragments currently on the back stack are searched. return The fragment if found or null otherwise.
public abstract android.support.v4.app.FragmentManager$BackStackEntry	getBackStackEntryAt(int index) Return the BackStackEntry at index index in the back stack; entries start index 0 being the bottom of the stack.
public abstract int	getBackStackEntryCount() Return the number of entries currently in the back stack.
public abstract Fragment	getFragment(android.os.Bundle bundle, java.lang.String key) Retrieve the current Fragment instance for a reference previously placed with {@link #putFragment(Bundle, String, Fragment)}. param bundle The bundle from which to retrieve the fragment reference. param key The name of the entry in the bundle. return Returns the current Fragment instance that is associated with the given reference.
public abstract java.util.List	getFragments() Get a list of all fragments that have been added to the fragment manager. return The list of all fragments or null if none. hide
public abstract boolean	isDestroyed() Returns true if the final {@link android.app.Activity#onDestroy() Activity.onDestroy()} call has been made on the FragmentManager's Activity, so this instance is now dead.
public FragmentTransaction	openTransaction() hide -- remove once prebuilts are in. return beginTransaction();
public abstract void	popBackStack(int id, int flags) Pop all back stack states up to the one with the given identifier. This function is asynchronous -- it enqueues the request to pop, but the action will not be performed until the application returns to its event loop. param id Identifier of the stated to be popped. If no identifier exists, false is returned. The identifier is the number returned by {@link FragmentTransaction#commit() FragmentTransaction.commit()}. The {@link #POP_BACK_STACK_INCLUSIVE} flag can be used to control whether the named state itself is popped. param flags Either 0 or {@link #POP_BACK_STACK_INCLUSIVE}.
public abstract void	popBackStack() Pop the top state off the back stack. Returns true if there was one to pop, else false. This function is asynchronous -- it enqueues the request to pop, but the action will not be performed until the application returns to its event loop.
public abstract void	popBackStack(java.lang.String name, int flags) Pop the last fragment transition from the manager's fragment back stack. If there is nothing to pop, false is returned. This function is asynchronous -- it enqueues the request to pop, but the action will not be performed until the application returns to its event loop. param name If non-null, this is the name of a previous back state to look for; if found, all states up to that state will be popped. The {@link #POP_BACK_STACK_INCLUSIVE} flag can be used to control whether the named state itself is popped. If null, only the top state is popped. param flags Either 0 or {@link #POP_BACK_STACK_INCLUSIVE}.
public abstract boolean	popBackStackImmediate(int id, int flags) Like {@link #popBackStack(int, int)}, but performs the operation immediately inside of the call. This is like calling {@link #executePendingTransactions()} afterwards. return Returns true if there was something popped, else false.
public abstract boolean	popBackStackImmediate() Like {@link #popBackStack()}, but performs the operation immediately inside of the call. This is like calling {@link #executePendingTransactions()} afterwards. return Returns true if there was something popped, else false.
public abstract boolean	popBackStackImmediate(java.lang.String name, int flags) Like {@link #popBackStack(String, int)}, but performs the operation immediately inside of the call. This is like calling {@link #executePendingTransactions()} afterwards. return Returns true if there was something popped, else false.
public abstract void	putFragment(android.os.Bundle bundle, java.lang.String key, Fragment fragment) Put a reference to a fragment in a Bundle. This Bundle can be persisted as saved state, and when later restoring {@link #getFragment(Bundle, String)} will return the current instance of the same fragment. param bundle The bundle in which to put the fragment reference. param key The name of the entry in the bundle. param fragment The Fragment whose reference is to be stored.
public abstract void	removeOnBackStackChangedListener(android.support.v4.app.FragmentManager$OnBackStackChangedListener listener) Remove a listener that was previously added with {@link #addOnBackStackChangedListener(OnBackStackChangedListener)}.
public abstract Fragment.SavedState	saveFragmentInstanceState(Fragment f) Save the current instance state of the given Fragment. This can be used later when creating a new instance of the Fragment and adding it to the fragment manager, to have it create itself to match the current state returned here. Note that there are limits on how this can be used: The Fragment must currently be attached to the FragmentManager. A new Fragment created using this saved state must be the same class type as the Fragment it was created from. The saved state can not contain dependencies on other fragments -- that is it can't use {@link #putFragment(Bundle, String, Fragment)} to store a fragment reference because that reference may not be valid when this saved state is later used. Likewise the Fragment's target and result code are not included in this state. param f The Fragment whose state is to be saved. return The generated state. This will be null if there was no interesting state created by the fragment.