BaseKeyListener

Abstract base class for key listeners. Provides a basic foundation for entering and editing text. Subclasses should override onKeyDown(View, Editable, int, KeyEvent) and onKeyUp(View, Editable, int, KeyEvent) to insert characters as keys are pressed.

Summary

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Inherited Constants

From class android.text.method.MetaKeyKeyListener

Public Constructors
	BaseKeyListener()

Public Constructors

BaseKeyListener()

Public Methods
boolean	backspace(View view, Editable content, int keyCode, KeyEvent event) Performs the action that happens when you press the `KEYCODE_DEL` key in a `TextView`.
boolean	forwardDelete(View view, Editable content, int keyCode, KeyEvent event) Performs the action that happens when you press the `KEYCODE_FORWARD_DEL` key in a `TextView`.
boolean	onKeyDown(View view, Editable content, int keyCode, KeyEvent event) Handles presses of the meta keys.
boolean	onKeyOther(View view, Editable content, KeyEvent event) Base implementation handles ACTION_MULTIPLE KEYCODE_UNKNOWN by inserting the event's text into the content.

Public Methods

boolean

backspace(View view, Editable content, int keyCode, KeyEvent event)

Performs the action that happens when you press the KEYCODE_DEL key in a TextView.

boolean

forwardDelete(View view, Editable content, int keyCode, KeyEvent event)

Performs the action that happens when you press the KEYCODE_FORWARD_DEL key in a TextView.

boolean

onKeyDown(View view, Editable content, int keyCode, KeyEvent event)

Handles presses of the meta keys.

boolean

onKeyOther(View view, Editable content, KeyEvent event)

Base implementation handles ACTION_MULTIPLE KEYCODE_UNKNOWN by inserting the event's text into the content.

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Inherited Methods

From class android.text.method.MetaKeyKeyListener

static long	adjustMetaAfterKeypress(long state) Call this method after you handle a keypress so that the meta state will be reset to unshifted (if it is not still down) or primed to be reset to unshifted (once it is released).
static void	adjustMetaAfterKeypress(Spannable content) Call this method after you handle a keypress so that the meta state will be reset to unshifted (if it is not still down) or primed to be reset to unshifted (once it is released).
static void	clearMetaKeyState(Editable content, int states)
void	clearMetaKeyState(View view, Editable content, int states)
long	clearMetaKeyState(long state, int which) Clears the state of the specified meta key if it is locked.
final static int	getMetaState(CharSequence text) Gets the state of the meta keys.
final static int	getMetaState(CharSequence text, KeyEvent event) Gets the state of the meta keys for a specific key event.
final static int	getMetaState(long state, int meta) Gets the state of a particular meta key.
final static int	getMetaState(long state) Gets the state of the meta keys.
final static int	getMetaState(CharSequence text, int meta, KeyEvent event) Gets the state of a particular meta key to use with a particular key event.
final static int	getMetaState(CharSequence text, int meta) Gets the state of a particular meta key.
static long	handleKeyDown(long state, int keyCode, KeyEvent event) Handles presses of the meta keys.
static long	handleKeyUp(long state, int keyCode, KeyEvent event) Handles release of the meta keys.
static boolean	isMetaTracker(CharSequence text, Object what) Returns true if this object is one that this class would use to keep track of any meta state in the specified text.
static boolean	isSelectingMetaTracker(CharSequence text, Object what) Returns true if this object is one that this class would use to keep track of the selecting meta state in the specified text.
boolean	onKeyDown(View view, Editable content, int keyCode, KeyEvent event) Handles presses of the meta keys.
boolean	onKeyUp(View view, Editable content, int keyCode, KeyEvent event) Handles release of the meta keys.
static void	resetLockedMeta(Spannable content) Call this if you are a method that ignores the locked meta state (arrow keys, for example) and you handle a key.
static long	resetLockedMeta(long state) Call this if you are a method that ignores the locked meta state (arrow keys, for example) and you handle a key.
static void	resetMetaState(Spannable text) Resets all meta state to inactive.

From class java.lang.Object

Object	clone() Creates and returns a copy of this `Object`.
boolean	equals(Object o) Compares this instance with the specified object and indicates if they are equal.
void	finalize() Invoked when the garbage collector has detected that this instance is no longer reachable.
final Class<?>	getClass() Returns the unique instance of `Class` that represents this object's class.
int	hashCode() Returns an integer hash code for this object.
final void	notify() Causes a thread which is waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
final void	notifyAll() Causes all threads which are waiting on this object's monitor (by means of calling one of the `wait()` methods) to be woken up.
String	toString() Returns a string containing a concise, human-readable description of this object.
final void	wait() Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object.
final void	wait(long millis, int nanos) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.
final void	wait(long millis) Causes the calling thread to wait until another thread calls the `notify()` or `notifyAll()` method of this object or until the specified timeout expires.

From interface android.text.method.KeyListener

Public Methods

public boolean backspace (View view, Editable content, int keyCode, KeyEvent event)

Added in API level 1

Performs the action that happens when you press the KEYCODE_DEL key in a TextView. If there is a selection, deletes the selection; otherwise, deletes the character before the cursor, if any; ALT+DEL deletes everything on the line the cursor is on.

Returns

true if anything was deleted; false otherwise.

public boolean forwardDelete (View view, Editable content, int keyCode, KeyEvent event)

Added in API level 11

Performs the action that happens when you press the KEYCODE_FORWARD_DEL key in a TextView. If there is a selection, deletes the selection; otherwise, deletes the character before the cursor, if any; ALT+FORWARD_DEL deletes everything on the line the cursor is on.

Returns

true if anything was deleted; false otherwise.

public boolean onKeyDown (View view, Editable content, int keyCode, KeyEvent event)

Added in API level 1

Handles presses of the meta keys.

public boolean onKeyOther (View view, Editable content, KeyEvent event)

Added in API level 3

Base implementation handles ACTION_MULTIPLE KEYCODE_UNKNOWN by inserting the event's text into the content.

java.lang.Object
↳	android.text.method.MetaKeyKeyListener
	↳	android.text.method.BaseKeyListener

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Enums

Class Overview

Summary

Public Constructors

public BaseKeyListener ()

Public Methods

public boolean backspace (View view, Editable content, int keyCode, KeyEvent event)

Returns

public boolean forwardDelete (View view, Editable content, int keyCode, KeyEvent event)

Returns

public boolean onKeyDown (View view, Editable content, int keyCode, KeyEvent event)

public boolean onKeyOther (View view, Editable content, KeyEvent event)