Added in API level 1

TextKeyListener

---

Kotlin |Java

open class TextKeyListener : BaseKeyListener, SpanWatcher

kotlin.Any
↳	android.text.method.MetaKeyKeyListener
	↳	android.text.method.BaseKeyListener
		↳	android.text.method.TextKeyListener

This is the key listener for typing normal text. It delegates to other key listeners appropriate to the current keyboard and language.

As for all implementations of KeyListener, this class is only concerned with hardware keyboards. Software input methods have no obligation to trigger the methods in this class.

Summary

Nested classes
	Capitalize

Inherited constants

From class MetaKeyKeyListener Int META_ALT_LOCKED Flag that indicates that the ALT key is locked. Int META_ALT_ON Flag that indicates that the ALT key is on. Value equals KeyEvent.META_ALT_ON. Int META_CAP_LOCKED Flag that indicates that the SHIFT key is locked in CAPS mode. Int META_SHIFT_ON Flag that indicates that the SHIFT key is on. Value equals KeyEvent.META_SHIFT_ON. Int META_SYM_LOCKED Flag that indicates that the SYM key is locked. Int META_SYM_ON Flag that indicates that the SYM key is on. Value equals KeyEvent.META_SYM_ON.

Public constructors
TextKeyListener(cap: TextKeyListener.Capitalize!, autotext: Boolean) Creates a new TextKeyListener with the specified capitalization and correction properties.

Public methods
open static Unit	clear(e: Editable!) Clear all the input state (autotext, autocap, multitap, undo) from the specified Editable, going beyond Editable.
open Int	getInputType()
open static TextKeyListener!	getInstance() Returns a new or existing instance with no automatic capitalization or correction.
open static TextKeyListener!	getInstance(autotext: Boolean, cap: TextKeyListener.Capitalize!) Returns a new or existing instance with the specified capitalization and correction properties.
open Boolean	onKeyDown(view: View!, content: Editable!, keyCode: Int, event: KeyEvent!)
open Boolean	onKeyOther(view: View!, content: Editable!, event: KeyEvent!)
open Boolean	onKeyUp(view: View!, content: Editable!, keyCode: Int, event: KeyEvent!)
open Unit	onSpanAdded(s: Spannable!, what: Any!, start: Int, end: Int)
open Unit	onSpanChanged(s: Spannable!, what: Any!, start: Int, end: Int, st: Int, en: Int)
open Unit	onSpanRemoved(s: Spannable!, what: Any!, start: Int, end: Int)
open Unit	release()
open static Boolean	shouldCap(cap: TextKeyListener.Capitalize!, cs: CharSequence!, off: Int) Returns whether it makes sense to automatically capitalize at the specified position in the specified text, with the specified rules.

Inherited functions
From class MetaKeyKeyListener Unit adjustMetaAfterKeypress(content: Spannable!) 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). Long adjustMetaAfterKeypress(state: Long) 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). Takes the current state, returns the new state. Unit clearMetaKeyState(view: View!, content: Editable!, states: Int) Long clearMetaKeyState(state: Long, which: Int) Clears the state of the specified meta key if it is locked. Unit clearMetaKeyState(content: Editable!, states: Int) Int getMetaState(text: CharSequence!) Gets the state of the meta keys. Int getMetaState(text: CharSequence!, event: KeyEvent!) Gets the state of the meta keys for a specific key event. For input devices that use toggled key modifiers, the `toggled' state is stored into the text buffer. This method retrieves the meta state for this event, accounting for the stored state. If the event has been created by a device that does not support toggled key modifiers, like a virtual device for example, the stored state is ignored. Int getMetaState(text: CharSequence!, meta: Int) Gets the state of a particular meta key. Int getMetaState(text: CharSequence!, meta: Int, event: KeyEvent!) Gets the state of a particular meta key to use with a particular key event. If the key event has been created by a device that does not support toggled key modifiers, like a virtual keyboard for example, only the meta state in the key event is considered. Int getMetaState(state: Long) Gets the state of the meta keys. Int getMetaState(state: Long, meta: Int) Gets the state of a particular meta key. Long handleKeyDown(state: Long, keyCode: Int, event: KeyEvent!) Handles presses of the meta keys. Long handleKeyUp(state: Long, keyCode: Int, event: KeyEvent!) Handles release of the meta keys. Boolean isMetaTracker(text: CharSequence!, what: Any!) Returns true if this object is one that this class would use to keep track of any meta state in the specified text. Boolean isSelectingMetaTracker(text: CharSequence!, what: Any!) 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 onKeyUp(view: View!, content: Editable!, keyCode: Int, event: KeyEvent!) Handles release of the meta keys. Unit resetLockedMeta(content: Spannable!) Call this if you are a method that ignores the locked meta state (arrow keys, for example) and you handle a key. Long resetLockedMeta(state: Long) Call this if you are a method that ignores the locked meta state (arrow keys, for example) and you handle a key. Unit resetMetaState(text: Spannable!) Resets all meta state to inactive.
From class BaseKeyListener Boolean backspace(view: View!, content: Editable!, keyCode: Int, event: KeyEvent!) Performs the action that happens when you press the KeyEvent.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. Boolean forwardDelete(view: View!, content: Editable!, keyCode: Int, event: KeyEvent!) Performs the action that happens when you press the KeyEvent.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.
From class KeyListener Int getInputType() Return the type of text that this key listener is manipulating, as per android.text.InputType. This is used to determine the mode of the soft keyboard that is shown for the editor. If you return android.text.InputType#TYPE_NULL then no soft keyboard will provided. In other words, you must be providing your own key pad for on-screen input and the key listener will be used to handle input from a hard keyboard. If you return any other value, a soft input method will be created when the user puts focus in the editor, which will provide a keypad and also consume hard key events. This means that the key listener will generally not be used, instead the soft input method will take care of managing key input as per the content type returned here.

Public constructors

TextKeyListener

Added in API level 1

TextKeyListener(
    cap: TextKeyListener.Capitalize!, 
    autotext: Boolean)

Creates a new TextKeyListener with the specified capitalization and correction properties.

Parameters
cap	TextKeyListener.Capitalize!: when, if ever, to automatically capitalize.
autotext	Boolean: whether to automatically do spelling corrections.

Public methods

clear

Added in API level 1

open static fun clear(e: Editable!): Unit

Clear all the input state (autotext, autocap, multitap, undo) from the specified Editable, going beyond Editable.clear(), which just clears the text but not the input state.

Parameters
e	Editable!: the buffer whose text and state are to be cleared.

getInputType

Added in API level 3

open fun getInputType(): Int

getInstance

Added in API level 1

open static fun getInstance(): TextKeyListener!

Returns a new or existing instance with no automatic capitalization or correction.

getInstance

Added in API level 1

open static fun getInstance(
    autotext: Boolean, 
    cap: TextKeyListener.Capitalize!
): TextKeyListener!

Returns a new or existing instance with the specified capitalization and correction properties.

Parameters
cap	TextKeyListener.Capitalize!: when, if ever, to automatically capitalize.
autotext	Boolean: whether to automatically do spelling corrections.

onKeyDown

Added in API level 1

open fun onKeyDown(
    view: View!, 
    content: Editable!, 
    keyCode: Int, 
    event: KeyEvent!
): Boolean

onKeyOther

Added in API level 3

open fun onKeyOther(
    view: View!, 
    content: Editable!, 
    event: KeyEvent!
): Boolean

onKeyUp

Added in API level 1

open fun onKeyUp(
    view: View!, 
    content: Editable!, 
    keyCode: Int, 
    event: KeyEvent!
): Boolean

onSpanAdded

Added in API level 1

open fun onSpanAdded(
    s: Spannable!, 
    what: Any!, 
    start: Int, 
    end: Int
): Unit

onSpanChanged

Added in API level 1

open fun onSpanChanged(
    s: Spannable!, 
    what: Any!, 
    start: Int, 
    end: Int, 
    st: Int, 
    en: Int
): Unit

onSpanRemoved

Added in API level 1

open fun onSpanRemoved(
    s: Spannable!, 
    what: Any!, 
    start: Int, 
    end: Int
): Unit

release

Added in API level 1

open fun release(): Unit

shouldCap

Added in API level 1

open static fun shouldCap(
    cap: TextKeyListener.Capitalize!, 
    cs: CharSequence!, 
    off: Int
): Boolean

Returns whether it makes sense to automatically capitalize at the specified position in the specified text, with the specified rules.

Parameters
cap	TextKeyListener.Capitalize!: the capitalization rules to consider.
cs	CharSequence!: the text in which an insertion is being made.
off	Int: the offset into that text where the insertion is being made.

Return
Boolean	whether the character being inserted should be capitalized.