KeyEvent

java.lang.Object
- ohos.multimodalinput.event.MultimodalEvent
- - ohos.multimodalinput.event.KeyEvent

所有已实现的接口:

Sequenceable

直接已知子类:

BuiltinKeyEvent, KeyBoardEvent
```
public abstract class KeyEvent
extends MultimodalEvent
```
Defines all key events.
This class extends the MultimodalEvent class. It defines the keycodes and methods for various key events.
The keycodes are as follows:
- -1: unknown keycode, which is the default value
- 1 to 1000: keycodes for common keys
- 1001 to 1999: keycodes for internal key devices
- 2000 to 3000: keycodes for external key devices (mainly external keyboards)
- 10001 to the value specified by NOW_MAX_KEY: keycodes for vehicle keys
从以下版本开始:

1

另请参阅:

MultimodalEvent

SystemCapability

SystemCapability.MultimodalInput#MULTIMODAL_INPUT

嵌套类概要
- 从接口继承的嵌套类/接口 ohos.utils.Sequenceable
  Sequenceable.Producer<T>

字段概要

字段
限定符和类型	字段	说明
`static int`	`KEY_0`	Keycode constant: '0' key
`static int`	`KEY_1`	Keycode constant: '1' key
`static int`	`KEY_2`	Keycode constant: '2' key
`static int`	`KEY_3`	Keycode constant: '3' key
`static int`	`KEY_4`	Keycode constant: '4' key
`static int`	`KEY_5`	Keycode constant: '5' key
`static int`	`KEY_6`	Keycode constant: '6' key
`static int`	`KEY_7`	Keycode constant: '7' key
`static int`	`KEY_8`	Keycode constant: '8' key
`static int`	`KEY_9`	Keycode constant: '9' key
`static int`	`KEY_A`	Keycode constant: 'A' key
`static int`	`KEY_ALT_LEFT`	Keycode constant: Left Alt modifier key
`static int`	`KEY_ALT_RIGHT`	Keycode constant: Right Alt modifier key
`static int`	`KEY_APOSTROPHE`	Keycode constant: ''' key (apostrophe key)
`static int`	`KEY_AT`	Keycode constant: '@' key
`static int`	`KEY_B`	Keycode constant: 'B' key
`static int`	`KEY_BACK`	Keycode constant: Back key
`static int`	`KEY_BACKSLASH`	Keycode constant: '\' key
`static int`	`KEY_BREAK`	Keycode constant: Break/Pause key
`static int`	`KEY_BRIGHTNESS_DOWN`	Brightness Down key
`static int`	`KEY_BRIGHTNESS_UP`	Brightness UP key
`static int`	`KEY_C`	Keycode constant: 'C' key
`static int`	`KEY_CALL`	Keycode constant: Call key
`static int`	`KEY_CAMERA`	Presses the camera key.
`static int`	`KEY_CAPS_LOCK`	Keycode constant: Caps Lock key
`static int`	`KEY_CLEAR`	Keycode constant: Clear key
`static int`	`KEY_COMMA`	Keycode constant: ',' key
`static int`	`KEY_CTRL_LEFT`	Keycode constant: Left Control modifier key
`static int`	`KEY_CTRL_RIGHT`	Keycode constant: Right Control modifier key
`static int`	`KEY_CUSTOM1`	Custom key 1
`static int`	`KEY_D`	Keycode constant: 'D' key
`static int`	`KEY_DEL`	Keycode constant: Backspace key
`static int`	`KEY_DPAD_CENTER`	Keycode constant: Directional Pad Center key
`static int`	`KEY_DPAD_DOWN`	Keycode constant: Directional Pad Down key
`static int`	`KEY_DPAD_LEFT`	Keycode constant: Directional Pad Left key
`static int`	`KEY_DPAD_RIGHT`	Keycode constant: Directional Pad Right key
`static int`	`KEY_DPAD_UP`	Keycode constant: Directional Pad Up key
`static int`	`KEY_E`	Keycode constant: 'E' key
`static int`	`KEY_ENDCALL`	Keycode constant: End Call key
`static int`	`KEY_ENTER`	Keycode constant: Enter key
`static int`	`KEY_ENVELOPE`	Keycode constant: Email function key
`static int`	`KEY_EQUALS`	Keycode constant: '=' key
`static int`	`KEY_ESCAPE`	Keycode constant: Escape key
`static int`	`KEY_EXPLORER`	Keycode constant: Explorer function key
`static int`	`KEY_F`	Keycode constant: 'F' key
`static int`	`KEY_F1`	Keycode constant: F1 key
`static int`	`KEY_F10`	Keycode constant: F10 key
`static int`	`KEY_F11`	Keycode constant: F11 key
`static int`	`KEY_F12`	Keycode constant: F12 key
`static int`	`KEY_F2`	Keycode constant: F2 key
`static int`	`KEY_F3`	Keycode constant: F3 key
`static int`	`KEY_F4`	Keycode constant: F4 key
`static int`	`KEY_F5`	Keycode constant: F5 key
`static int`	`KEY_F6`	Keycode constant: F6 key
`static int`	`KEY_F7`	Keycode constant: F7 key
`static int`	`KEY_F8`	Keycode constant: F8 key
`static int`	`KEY_F9`	Keycode constant: F9 key
`static int`	`KEY_FOCUS`	Keycode constant: Camera Focus key
`static int`	`KEY_FORWARD`	Keycode constant: Forward key
`static int`	`KEY_FORWARD_DEL`	Keycode constant: Forward Delete key
`static int`	`KEY_FUNCTION`	Keycode constant: Function modifier key
`static int`	`KEY_G`	Keycode constant: 'G' key
`static int`	`KEY_GRAVE`	Keycode constant: '`' key (backtick key)
`static int`	`KEY_H`	Keycode constant: 'H' key
`static int`	`KEY_HEADSETHOOK`	Keycode constant: Headset Hook key
`static int`	`KEY_HOME`	Keycode constant: Home key
`static int`	`KEY_I`	Keycode constant: 'I' key
`static int`	`KEY_INSERT`	Keycode constant: Insert key
`static int`	`KEY_J`	Keycode constant: 'J' key
`static int`	`KEY_K`	Keycode constant: 'K' key
`static int`	`KEY_L`	Keycode constant: 'L' key
`static int`	`KEY_LAUNCHER_MENU`	Menu key
`static int`	`KEY_LEFT_BRACKET`	Keycode constant: '[' key
`static int`	`KEY_LEFT_KNOB`	Left Knob
`static int`	`KEY_LEFT_KNOB_ROLL_DOWN`	Left Knob roll-down
`static int`	`KEY_LEFT_KNOB_ROLL_UP`	Left Knob roll-up
`static int`	`KEY_M`	Keycode constant: 'M' key
`static int`	`KEY_MEDIA_CLOSE`	Keycode constant: Close media key
`static int`	`KEY_MEDIA_EJECT`	Keycode constant: Eject media key
`static int`	`KEY_MEDIA_FAST_FORWARD`	Keycode constant: Fast Forward media key
`static int`	`KEY_MEDIA_NEXT`	Keycode constant: Play Next media key
`static int`	`KEY_MEDIA_PAUSE`	Keycode constant: Pause media key
`static int`	`KEY_MEDIA_PLAY`	Keycode constant: Play media key
`static int`	`KEY_MEDIA_PLAY_PAUSE`	Keycode constant: Play/Pause media key
`static int`	`KEY_MEDIA_PREVIOUS`	Keycode constant: Play Previous media key
`static int`	`KEY_MEDIA_RECORD`	Keycode constant: Record media key
`static int`	`KEY_MEDIA_REWIND`	Keycode constant: Rewind media key
`static int`	`KEY_MEDIA_STOP`	Keycode constant: Stop media key
`static int`	`KEY_MENU`	Keycode constant: Menu key
`static int`	`KEY_META_LEFT`	Keycode constant: Left Meta modifier key
`static int`	`KEY_META_RIGHT`	Keycode constant: Right Meta modifier key
`static int`	`KEY_MINUS`	Keycode constant: '-' key
`static int`	`KEY_MOVE_END`	Keycode constant: End Movement key
`static int`	`KEY_MOVE_HOME`	Keycode constant: Home Movement key
`static int`	`KEY_N`	Keycode constant: 'N' key
`static int`	`KEY_NOTIFICATION`	Keycode constant: Notification key
`static int`	`KEY_NUM_LOCK`	Keycode constant: Num Lock key
`static int`	`KEY_NUMPAD_0`	Keycode constant: '0' key on the numeric keypad
`static int`	`KEY_NUMPAD_1`	Keycode constant: '1' key on the numeric keypad
`static int`	`KEY_NUMPAD_2`	Keycode constant: '2' key on the numeric keypad
`static int`	`KEY_NUMPAD_3`	Keycode constant: '3' key on the numeric keypad
`static int`	`KEY_NUMPAD_4`	Keycode constant: '4' key on the numeric keypad
`static int`	`KEY_NUMPAD_5`	Keycode constant: '5' key on the numeric keypad
`static int`	`KEY_NUMPAD_6`	Keycode constant: '6' key on the numeric keypad
`static int`	`KEY_NUMPAD_7`	Keycode constant: '7' key on the numeric keypad
`static int`	`KEY_NUMPAD_8`	Keycode constant: '8' key on the numeric keypad
`static int`	`KEY_NUMPAD_9`	Keycode constant: '9' key on the numeric keypad
`static int`	`KEY_NUMPAD_ADD`	Keycode constant: '+' key (for addition) on the numeric keypad
`static int`	`KEY_NUMPAD_COMMA`	Key code constant: ',' key (for decimals or digit grouping) on the numeric keypad
`static int`	`KEY_NUMPAD_DIVIDE`	Keycode constant: '/' key (for division) on the numeric keypad
`static int`	`KEY_NUMPAD_DOT`	Key code constant: '.' key (for decimals or digit grouping) on the numeric keypad
`static int`	`KEY_NUMPAD_ENTER`	Keycode constant: Enter key on the numeric keypad
`static int`	`KEY_NUMPAD_EQUALS`	Keycode constant: '=' key on the numeric keypad
`static int`	`KEY_NUMPAD_LEFT_PAREN`	Keycode constant: '(' key on the numeric keypad
`static int`	`KEY_NUMPAD_MULTIPLY`	Keycode constant: '*' key (for multiplication) on the numeric keypad
`static int`	`KEY_NUMPAD_RIGHT_PAREN`	Keycode constant: ')' key on the numeric keypad
`static int`	`KEY_NUMPAD_SUBTRACT`	Keycode constant: '-' key (for subtraction) on the numeric keypad
`static int`	`KEY_O`	Keycode constant: 'O' key
`static int`	`KEY_P`	Keycode constant: 'P' key
`static int`	`KEY_PAGE_DOWN`	Keycode constant: Page Down key
`static int`	`KEY_PAGE_UP`	Keycode constant: Page Up key
`static int`	`KEY_PERIOD`	Keycode constant: '.' key
`static int`	`KEY_PLUS`	Keycode constant: '+' key
`static int`	`KEY_POUND`	Keycode constant: '#' key
`static int`	`KEY_POWER`	Presses the power button.
`static int`	`KEY_PRESSED`	Indicates that the key is being pressed down.
`static int`	`KEY_Q`	Keycode constant: 'Q' key
`static int`	`KEY_R`	Keycode constant: 'R' key
`static int`	`KEY_RELEASED`	Indicates that the key is being released.
`static int`	`KEY_RIGHT_BRACKET`	Keycode constant: ']' key
`static int`	`KEY_RIGHT_KNOB`	Right Knob
`static int`	`KEY_RIGHT_KNOB_ROLL_DOWN`	Right Knob roll-down
`static int`	`KEY_RIGHT_KNOB_ROLL_UP`	Right Knob roll-up
`static int`	`KEY_S`	Keycode constant: 'S' key
`static int`	`KEY_SCROLL_LOCK`	Keycode constant: Scroll Lock key
`static int`	`KEY_SEARCH`	Keycode constant: Search key
`static int`	`KEY_SEMICOLON`	Keycode constant: ';' key
`static int`	`KEY_SHIFT_LEFT`	Keycode constant: Left Shift modifier key
`static int`	`KEY_SHIFT_RIGHT`	Keycode constant: Right Shift modifier key
`static int`	`KEY_SLASH`	Keycode constant: '/' key
`static int`	`KEY_SPACE`	Keycode constant: Space key
`static int`	`KEY_STAR`	Keycode constant: '*' key
`static int`	`KEY_SYM`	Keycode constant: Symbol modifier key
`static int`	`KEY_SYSRQ`	Keycode constant: System Request/Print Screen key
`static int`	`KEY_T`	Keycode constant: 'T' key
`static int`	`KEY_TAB`	Keycode constant: Tab key
`static int`	`KEY_U`	Keycode constant: 'U' key
`static int`	`KEY_UNKNOWN`	Keycode constant: unknown keycode
`static int`	`KEY_V`	Keycode constant: 'V' key
`static int`	`KEY_VOICE_ASSISTANT`	Voice Assistant key
`static int`	`KEY_VOICE_SOURCE_SWITCH`	Audio Source Switch button
`static int`	`KEY_VOLUME_DOWN`	Turns down the volume.
`static int`	`KEY_VOLUME_MUTE`	Indicates that the volume is muted.
`static int`	`KEY_VOLUME_UP`	Turns up the volume.
`static int`	`KEY_W`	Keycode constant: 'W' key
`static int`	`KEY_WEAR_1`	Indicates general-purpose key 1 on the wearables
`static int`	`KEY_X`	Keycode constant: 'X' key
`static int`	`KEY_Y`	Keycode constant: 'Y' key
`static int`	`KEY_Z`	Keycode constant: 'Z' key
`static int`	`NOW_MAX_KEY`	Keycode constant: max keycode

从类继承的字段 ohos.multimodalinput.event.MultimodalEvent
BUILTIN_KEY, DEFAULT_TYPE, highLevelEvent, KEYBOARD, MOUSE, ROTATION, SPEECH, STYLUS, TOUCH_PANEL, UNSUPPORTED_DEVICE, uuid

构造器概要

构造器
构造器说明

KeyEvent()

构造器
构造器	说明
`KeyEvent()`

方法概要

所有方法静态方法实例方法抽象方法具体方法
限定符和类型	方法	说明
`abstract int`	`getKeyCode()`	Obtains the keycode of the current key event.
`abstract long`	`getKeyDownDuration()`	Obtains the duration during which the current key is pressed down before this method is called.
`static int`	`getMaxKeyCode()`	Obtains the max keycode of the current key event.
`abstract boolean`	`isKeyDown()`	Obtains the press-down state of the current key.

从类继承的方法 ohos.multimodalinput.event.MultimodalEvent
getDeviceId, getInputDeviceId, getOccurredTime, getSourceDevice, getUuid, isSameEvent, marshalling, unmarshalling

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

从接口继承的方法 ohos.utils.Sequenceable
hasFileDescriptor

- 字段详细资料
  - KEY_0
```
public static final int KEY_0
```
    Keycode constant: '0' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_1
```
public static final int KEY_1
```
    Keycode constant: '1' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_2
```
public static final int KEY_2
```
    Keycode constant: '2' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_3
```
public static final int KEY_3
```
    Keycode constant: '3' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_4
```
public static final int KEY_4
```
    Keycode constant: '4' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_5
```
public static final int KEY_5
```
    Keycode constant: '5' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_6
```
public static final int KEY_6
```
    Keycode constant: '6' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_7
```
public static final int KEY_7
```
    Keycode constant: '7' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_8
```
public static final int KEY_8
```
    Keycode constant: '8' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_9
```
public static final int KEY_9
```
    Keycode constant: '9' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_A
```
public static final int KEY_A
```
    Keycode constant: 'A' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_ALT_LEFT
```
public static final int KEY_ALT_LEFT
```
    Keycode constant: Left Alt modifier key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_ALT_RIGHT
```
public static final int KEY_ALT_RIGHT
```
    Keycode constant: Right Alt modifier key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_APOSTROPHE
```
public static final int KEY_APOSTROPHE
```
    Keycode constant: ''' key (apostrophe key)
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_AT
```
public static final int KEY_AT
```
    Keycode constant: '@' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_B
```
public static final int KEY_B
```
    Keycode constant: 'B' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_BACK
```
public static final int KEY_BACK
```
    Keycode constant: Back key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_BACKSLASH
```
public static final int KEY_BACKSLASH
```
    Keycode constant: '\' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_BREAK
```
public static final int KEY_BREAK
```
    Keycode constant: Break/Pause key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_BRIGHTNESS_DOWN
```
public static final int KEY_BRIGHTNESS_DOWN
```
    Brightness Down key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_BRIGHTNESS_UP
```
public static final int KEY_BRIGHTNESS_UP
```
    Brightness UP key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_C
```
public static final int KEY_C
```
    Keycode constant: 'C' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_CALL
```
public static final int KEY_CALL
```
    Keycode constant: Call key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_CAMERA
```
public static final int KEY_CAMERA
```
    Presses the camera key.
    It is used to start the camera or take photos.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_CAPS_LOCK
```
public static final int KEY_CAPS_LOCK
```
    Keycode constant: Caps Lock key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_CLEAR
```
public static final int KEY_CLEAR
```
    Keycode constant: Clear key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_COMMA
```
public static final int KEY_COMMA
```
    Keycode constant: ',' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_CTRL_LEFT
```
public static final int KEY_CTRL_LEFT
```
    Keycode constant: Left Control modifier key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_CTRL_RIGHT
```
public static final int KEY_CTRL_RIGHT
```
    Keycode constant: Right Control modifier key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_CUSTOM1
```
public static final int KEY_CUSTOM1
```
    Custom key 1
    The actions mapping to the custom keys are user-defined. Key values 521-529 are reserved for custom keys.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_D
```
public static final int KEY_D
```
    Keycode constant: 'D' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_DEL
```
public static final int KEY_DEL
```
    Keycode constant: Backspace key
    Unlike KEY_FORWARD_DEL, this key is used to delete characters before the insertion point.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_DPAD_CENTER
```
public static final int KEY_DPAD_CENTER
```
    Keycode constant: Directional Pad Center key
    The key may also be synthesized from trackball motions.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_DPAD_DOWN
```
public static final int KEY_DPAD_DOWN
```
    Keycode constant: Directional Pad Down key
    The key may also be synthesized from trackball motions.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_DPAD_LEFT
```
public static final int KEY_DPAD_LEFT
```
    Keycode constant: Directional Pad Left key
    The key may also be synthesized from trackball motions.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_DPAD_RIGHT
```
public static final int KEY_DPAD_RIGHT
```
    Keycode constant: Directional Pad Right key
    The key may also be synthesized from trackball motions.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_DPAD_UP
```
public static final int KEY_DPAD_UP
```
    Keycode constant: Directional Pad Up key
    The key may also be synthesized from trackball motions.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_E
```
public static final int KEY_E
```
    Keycode constant: 'E' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_ENDCALL
```
public static final int KEY_ENDCALL
```
    Keycode constant: End Call key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_ENTER
```
public static final int KEY_ENTER
```
    Keycode constant: Enter key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_ENVELOPE
```
public static final int KEY_ENVELOPE
```
    Keycode constant: Email function key
    This key is used to launch an email application.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_EQUALS
```
public static final int KEY_EQUALS
```
    Keycode constant: '=' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_ESCAPE
```
public static final int KEY_ESCAPE
```
    Keycode constant: Escape key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_EXPLORER
```
public static final int KEY_EXPLORER
```
    Keycode constant: Explorer function key
    This key is used to launch a browser application.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F
```
public static final int KEY_F
```
    Keycode constant: 'F' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F1
```
public static final int KEY_F1
```
    Keycode constant: F1 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F10
```
public static final int KEY_F10
```
    Keycode constant: F10 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F11
```
public static final int KEY_F11
```
    Keycode constant: F11 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F12
```
public static final int KEY_F12
```
    Keycode constant: F12 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F2
```
public static final int KEY_F2
```
    Keycode constant: F2 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F3
```
public static final int KEY_F3
```
    Keycode constant: F3 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F4
```
public static final int KEY_F4
```
    Keycode constant: F4 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F5
```
public static final int KEY_F5
```
    Keycode constant: F5 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F6
```
public static final int KEY_F6
```
    Keycode constant: F6 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F7
```
public static final int KEY_F7
```
    Keycode constant: F7 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F8
```
public static final int KEY_F8
```
    Keycode constant: F8 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_F9
```
public static final int KEY_F9
```
    Keycode constant: F9 key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_FOCUS
```
public static final int KEY_FOCUS
```
    Keycode constant: Camera Focus key
    This key is used to enable focus for the camera.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_FORWARD
```
public static final int KEY_FORWARD
```
    Keycode constant: Forward key
    This key is used to navigate forward in the history stack. It is a complement of KEY_BACK.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_FORWARD_DEL
```
public static final int KEY_FORWARD_DEL
```
    Keycode constant: Forward Delete key
    Unlike KEY_DEL, this key is used to delete characters ahead of the insertion point.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_FUNCTION
```
public static final int KEY_FUNCTION
```
    Keycode constant: Function modifier key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_G
```
public static final int KEY_G
```
    Keycode constant: 'G' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_GRAVE
```
public static final int KEY_GRAVE
```
    Keycode constant: '`' key (backtick key)
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_H
```
public static final int KEY_H
```
    Keycode constant: 'H' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_HEADSETHOOK
```
public static final int KEY_HEADSETHOOK
```
    Keycode constant: Headset Hook key
    The key is used to end a call and stop media.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_HOME
```
public static final int KEY_HOME
```
    Keycode constant: Home key
    This key is processed by the framework and will never be sent to the application.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_I
```
public static final int KEY_I
```
    Keycode constant: 'I' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_INSERT
```
public static final int KEY_INSERT
```
    Keycode constant: Insert key
    This key is used to toggle the insert or overwrite edit mode.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_J
```
public static final int KEY_J
```
    Keycode constant: 'J' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_K
```
public static final int KEY_K
```
    Keycode constant: 'K' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_L
```
public static final int KEY_L
```
    Keycode constant: 'L' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_LAUNCHER_MENU
```
public static final int KEY_LAUNCHER_MENU
```
    Menu key
    Pressing this key will display the launcher page.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_LEFT_BRACKET
```
public static final int KEY_LEFT_BRACKET
```
    Keycode constant: '[' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_LEFT_KNOB
```
public static final int KEY_LEFT_KNOB
```
    Left Knob
    Pressing the knob will activate its adjustment function.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_LEFT_KNOB_ROLL_DOWN
```
public static final int KEY_LEFT_KNOB_ROLL_DOWN
```
    Left Knob roll-down
    In contrast to KEY_LEFT_KNOB_ROLL_UP, it means rolling the left knob downwards. The knob function is scenario-specific, for example, reducing the volume or air conditioner temperature.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_LEFT_KNOB_ROLL_UP
```
public static final int KEY_LEFT_KNOB_ROLL_UP
```
    Left Knob roll-up
    In contrast to KEY_LEFT_KNOB_ROLL_DOWN, it means rolling the left knob upwards. The knob function is scenario-specific, for example, increasing the volume or air conditioner temperature.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_M
```
public static final int KEY_M
```
    Keycode constant: 'M' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_CLOSE
```
public static final int KEY_MEDIA_CLOSE
```
    Keycode constant: Close media key
    This key can be used to close a CD tray, for example.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_EJECT
```
public static final int KEY_MEDIA_EJECT
```
    Keycode constant: Eject media key
    This key can be used to eject a CD tray, for example.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_FAST_FORWARD
```
public static final int KEY_MEDIA_FAST_FORWARD
```
    Keycode constant: Fast Forward media key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_NEXT
```
public static final int KEY_MEDIA_NEXT
```
    Keycode constant: Play Next media key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_PAUSE
```
public static final int KEY_MEDIA_PAUSE
```
    Keycode constant: Pause media key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_PLAY
```
public static final int KEY_MEDIA_PLAY
```
    Keycode constant: Play media key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_PLAY_PAUSE
```
public static final int KEY_MEDIA_PLAY_PAUSE
```
    Keycode constant: Play/Pause media key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_PREVIOUS
```
public static final int KEY_MEDIA_PREVIOUS
```
    Keycode constant: Play Previous media key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_RECORD
```
public static final int KEY_MEDIA_RECORD
```
    Keycode constant: Record media key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_REWIND
```
public static final int KEY_MEDIA_REWIND
```
    Keycode constant: Rewind media key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MEDIA_STOP
```
public static final int KEY_MEDIA_STOP
```
    Keycode constant: Stop media key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MENU
```
public static final int KEY_MENU
```
    Keycode constant: Menu key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_META_LEFT
```
public static final int KEY_META_LEFT
```
    Keycode constant: Left Meta modifier key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_META_RIGHT
```
public static final int KEY_META_RIGHT
```
    Keycode constant: Right Meta modifier key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MINUS
```
public static final int KEY_MINUS
```
    Keycode constant: '-' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MOVE_END
```
public static final int KEY_MOVE_END
```
    Keycode constant: End Movement key
    This key is used to scroll or move the cursor around to the end of a line or to the bottom of a list.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_MOVE_HOME
```
public static final int KEY_MOVE_HOME
```
    Keycode constant: Home Movement key
    This key is used to scroll or move the cursor around to the start of a line or to the top of a list.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_N
```
public static final int KEY_N
```
    Keycode constant: 'N' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NOTIFICATION
```
public static final int KEY_NOTIFICATION
```
    Keycode constant: Notification key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_0
```
public static final int KEY_NUMPAD_0
```
    Keycode constant: '0' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_1
```
public static final int KEY_NUMPAD_1
```
    Keycode constant: '1' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_2
```
public static final int KEY_NUMPAD_2
```
    Keycode constant: '2' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_3
```
public static final int KEY_NUMPAD_3
```
    Keycode constant: '3' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_4
```
public static final int KEY_NUMPAD_4
```
    Keycode constant: '4' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_5
```
public static final int KEY_NUMPAD_5
```
    Keycode constant: '5' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_6
```
public static final int KEY_NUMPAD_6
```
    Keycode constant: '6' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_7
```
public static final int KEY_NUMPAD_7
```
    Keycode constant: '7' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_8
```
public static final int KEY_NUMPAD_8
```
    Keycode constant: '8' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_9
```
public static final int KEY_NUMPAD_9
```
    Keycode constant: '9' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_ADD
```
public static final int KEY_NUMPAD_ADD
```
    Keycode constant: '+' key (for addition) on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_COMMA
```
public static final int KEY_NUMPAD_COMMA
```
    Key code constant: ',' key (for decimals or digit grouping) on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_DIVIDE
```
public static final int KEY_NUMPAD_DIVIDE
```
    Keycode constant: '/' key (for division) on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_DOT
```
public static final int KEY_NUMPAD_DOT
```
    Key code constant: '.' key (for decimals or digit grouping) on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_ENTER
```
public static final int KEY_NUMPAD_ENTER
```
    Keycode constant: Enter key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_EQUALS
```
public static final int KEY_NUMPAD_EQUALS
```
    Keycode constant: '=' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_LEFT_PAREN
```
public static final int KEY_NUMPAD_LEFT_PAREN
```
    Keycode constant: '(' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_MULTIPLY
```
public static final int KEY_NUMPAD_MULTIPLY
```
    Keycode constant: '*' key (for multiplication) on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_RIGHT_PAREN
```
public static final int KEY_NUMPAD_RIGHT_PAREN
```
    Keycode constant: ')' key on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUMPAD_SUBTRACT
```
public static final int KEY_NUMPAD_SUBTRACT
```
    Keycode constant: '-' key (for subtraction) on the numeric keypad
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_NUM_LOCK
```
public static final int KEY_NUM_LOCK
```
    Keycode constant: Num Lock key
    This key is used to alter the behavior of other keys on the numeric keypad.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_O
```
public static final int KEY_O
```
    Keycode constant: 'O' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_P
```
public static final int KEY_P
```
    Keycode constant: 'P' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_PAGE_DOWN
```
public static final int KEY_PAGE_DOWN
```
    Keycode constant: Page Down key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_PAGE_UP
```
public static final int KEY_PAGE_UP
```
    Keycode constant: Page Up key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_PERIOD
```
public static final int KEY_PERIOD
```
    Keycode constant: '.' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_PLUS
```
public static final int KEY_PLUS
```
    Keycode constant: '+' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_POUND
```
public static final int KEY_POUND
```
    Keycode constant: '#' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_POWER
```
public static final int KEY_POWER
```
    Presses the power button.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_PRESSED
```
public static final int KEY_PRESSED
```
    Indicates that the key is being pressed down.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    常量字段值
  - KEY_Q
```
public static final int KEY_Q
```
    Keycode constant: 'Q' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_R
```
public static final int KEY_R
```
    Keycode constant: 'R' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_RELEASED
```
public static final int KEY_RELEASED
```
    Indicates that the key is being released.
    
    从以下版本开始:
    
    4
    
    另请参阅:
    
    常量字段值
  - KEY_RIGHT_BRACKET
```
public static final int KEY_RIGHT_BRACKET
```
    Keycode constant: ']' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_RIGHT_KNOB
```
public static final int KEY_RIGHT_KNOB
```
    Right Knob
    Pressing the knob will activate its adjustment function.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_RIGHT_KNOB_ROLL_DOWN
```
public static final int KEY_RIGHT_KNOB_ROLL_DOWN
```
    Right Knob roll-down
    In contrast to KEY_RIGHT_KNOB_ROLL_UP, it means rolling the right knob downwards. The knob function is scenario-specific, for example, reducing the volume or air conditioner temperature.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_RIGHT_KNOB_ROLL_UP
```
public static final int KEY_RIGHT_KNOB_ROLL_UP
```
    Right Knob roll-up
    In contrast to KEY_RIGHT_KNOB_ROLL_DOWN, it means rolling the right knob upwards. The knob function is scenario-specific, for example, increasing the volume or air conditioner temperature.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_S
```
public static final int KEY_S
```
    Keycode constant: 'S' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_SCROLL_LOCK
```
public static final int KEY_SCROLL_LOCK
```
    Keycode constant: Scroll Lock key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_SEARCH
```
public static final int KEY_SEARCH
```
    Keycode constant: Search key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_SEMICOLON
```
public static final int KEY_SEMICOLON
```
    Keycode constant: ';' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_SHIFT_LEFT
```
public static final int KEY_SHIFT_LEFT
```
    Keycode constant: Left Shift modifier key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_SHIFT_RIGHT
```
public static final int KEY_SHIFT_RIGHT
```
    Keycode constant: Right Shift modifier key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_SLASH
```
public static final int KEY_SLASH
```
    Keycode constant: '/' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_SPACE
```
public static final int KEY_SPACE
```
    Keycode constant: Space key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_STAR
```
public static final int KEY_STAR
```
    Keycode constant: '*' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_SYM
```
public static final int KEY_SYM
```
    Keycode constant: Symbol modifier key
    The key is used to input alternate symbols.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_SYSRQ
```
public static final int KEY_SYSRQ
```
    Keycode constant: System Request/Print Screen key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_T
```
public static final int KEY_T
```
    Keycode constant: 'T' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_TAB
```
public static final int KEY_TAB
```
    Keycode constant: Tab key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_U
```
public static final int KEY_U
```
    Keycode constant: 'U' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_UNKNOWN
```
public static final int KEY_UNKNOWN
```
    Keycode constant: unknown keycode
    The keycode is unknown.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_V
```
public static final int KEY_V
```
    Keycode constant: 'V' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_VOICE_ASSISTANT
```
public static final int KEY_VOICE_ASSISTANT
```
    Voice Assistant key
    This key is used to wake up the voice assistant.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_VOICE_SOURCE_SWITCH
```
public static final int KEY_VOICE_SOURCE_SWITCH
```
    Audio Source Switch button
    Pressing this button will enable the audio source. Depending on the actual scenario, it may also indicate that the Bluetooth call control button is pressed.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_VOLUME_DOWN
```
public static final int KEY_VOLUME_DOWN
```
    Turns down the volume.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_VOLUME_MUTE
```
public static final int KEY_VOLUME_MUTE
```
    Indicates that the volume is muted.
    
    从以下版本开始:
    
    7
    
    另请参阅:
    
    常量字段值
  - KEY_VOLUME_UP
```
public static final int KEY_VOLUME_UP
```
    Turns up the volume.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_W
```
public static final int KEY_W
```
    Keycode constant: 'W' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_WEAR_1
```
public static final int KEY_WEAR_1
```
    Indicates general-purpose key 1 on the wearables
    
    从以下版本开始:
    
    3
    
    另请参阅:
    
    常量字段值
  - KEY_X
```
public static final int KEY_X
```
    Keycode constant: 'X' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_Y
```
public static final int KEY_Y
```
    Keycode constant: 'Y' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - KEY_Z
```
public static final int KEY_Z
```
    Keycode constant: 'Z' key
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
  - NOW_MAX_KEY
```
public static final int NOW_MAX_KEY
```
    Keycode constant: max keycode
    If a new keycode added to KeyEvent is greater than the maximum keycode, update the maximum keycode accordingly.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    常量字段值
- 构造器详细资料
  - KeyEvent
```
public KeyEvent()
```
- 方法详细资料
  - getMaxKeyCode
```
public static int getMaxKeyCode()
```
    Obtains the max keycode of the current key event.
    
    返回:
    
    Returns the max keycode of the current key event.
    
    从以下版本开始:
    
    1
  - isKeyDown
```
public abstract boolean isKeyDown()
```
    Obtains the press-down state of the current key.
    
    返回:
    
    Returns true if the current key is pressed down; returns false otherwise.
    
    从以下版本开始:
    
    1
  - getKeyCode
```
public abstract int getKeyCode()
```
    Obtains the keycode of the current key event.
    
    返回:
    
    Returns the keycode of the event; returns KEY_UNKNOWN if the keycode cannot be obtained.
    
    从以下版本开始:
    
    1
    
    另请参阅:
    
    getMaxKeyCode()
  - getKeyDownDuration
```
public abstract long getKeyDownDuration()
```
    Obtains the duration during which the current key is pressed down before this method is called.
    
    返回:
    
    Returns the duration (in ms) during which the current key is pressed down; returns 0 if the current key has not been pressed down.
    
    从以下版本开始:
    
    1

类 KeyEvent

嵌套类概要

从接口继承的嵌套类/接口 ohos.utils.Sequenceable

字段概要

从类继承的字段 ohos.multimodalinput.event.MultimodalEvent

构造器概要

方法概要

从类继承的方法 ohos.multimodalinput.event.MultimodalEvent

从类继承的方法 java.lang.Object

从接口继承的方法 ohos.utils.Sequenceable

字段详细资料

KEY_0

KEY_1

KEY_2

KEY_3

KEY_4

KEY_5

KEY_6

KEY_7

KEY_8

KEY_9

KEY_A

KEY_ALT_LEFT

KEY_ALT_RIGHT

KEY_APOSTROPHE

KEY_AT

KEY_B

KEY_BACK

KEY_BACKSLASH

KEY_BREAK

KEY_BRIGHTNESS_DOWN

KEY_BRIGHTNESS_UP

KEY_C

KEY_CALL

KEY_CAMERA

KEY_CAPS_LOCK

KEY_CLEAR

KEY_COMMA

KEY_CTRL_LEFT

KEY_CTRL_RIGHT

KEY_CUSTOM1

KEY_D

KEY_DEL

KEY_DPAD_CENTER

KEY_DPAD_DOWN

KEY_DPAD_LEFT

KEY_DPAD_RIGHT

KEY_DPAD_UP

KEY_E

KEY_ENDCALL

KEY_ENTER

KEY_ENVELOPE

KEY_EQUALS

KEY_ESCAPE

KEY_EXPLORER

KEY_F

KEY_F1

KEY_F10

KEY_F11

KEY_F12

KEY_F2

KEY_F3

KEY_F4

KEY_F5

KEY_F6

KEY_F7

KEY_F8

KEY_F9

KEY_FOCUS

KEY_FORWARD

KEY_FORWARD_DEL

KEY_FUNCTION

KEY_G

KEY_GRAVE

KEY_H

KEY_HEADSETHOOK

KEY_HOME

KEY_I

KEY_INSERT

KEY_J