在 Android KeyEvent 中区分文本键码和控制键码
Differentiating text keycode from control keycode in Android KeyEvent
有284 KeyEvent key codes个。其中一些表示 Unicode 字符（如 KEYCODE_A 和 KEYCODE_1），而另一些表示控制字符（如 KEYCODE_DEL）。
我正在制作 custom view that handles keyboard input。它从输入连接获取大部分输入，但有时键盘会发送键码（通常与硬键盘输入相关联）。我也需要处理它。我是否需要详尽地处理每个控制键代码，然后将其余部分转换为文本（使用 (char) event.getUnicodeChar()），或者是否有一种内置的方法来区分文本代码和控制代码？
KeyEvent.getUnicodeChar() documentation 说
Returns 0 if the key is not one that is used to type Unicode characters.
因此很容易区分文本代码和控制代码，如下所示：
if (keyEvent.getUnicodeChar() != 0) {
// unicode text
char unicodeChar = (char) keyEvent.getUnicodeChar();
} else {
// control char
}
这是帮助我得出这个结论的列表：
// keyCode, Unicode, char, keyCode name
0 0 �� KEYCODE_UNKNOWN
1 0 �� KEYCODE_SOFT_LEFT
2 0 �� KEYCODE_SOFT_RIGHT
3 0 �� KEYCODE_HOME
4 0 �� KEYCODE_BACK
5 0 �� KEYCODE_CALL
6 0 �� KEYCODE_ENDCALL
7 48 0 KEYCODE_0
8 49 1 KEYCODE_1
9 50 2 KEYCODE_2
10 51 3 KEYCODE_3
11 52 4 KEYCODE_4
12 53 5 KEYCODE_5
13 54 6 KEYCODE_6
14 55 7 KEYCODE_7
15 56 8 KEYCODE_8
16 57 9 KEYCODE_9
17 42 * KEYCODE_STAR
18 35 # KEYCODE_POUND
19 0 �� KEYCODE_DPAD_UP
20 0 �� KEYCODE_DPAD_DOWN
21 0 �� KEYCODE_DPAD_LEFT
22 0 �� KEYCODE_DPAD_RIGHT
23 0 �� KEYCODE_DPAD_CENTER
24 0 �� KEYCODE_VOLUME_UP
25 0 �� KEYCODE_VOLUME_DOWN
26 0 �� KEYCODE_POWER
27 0 �� KEYCODE_CAMERA
28 0 �� KEYCODE_CLEAR
29 97 a KEYCODE_A
30 98 b KEYCODE_B
31 99 c KEYCODE_C
32 100 d KEYCODE_D
33 101 e KEYCODE_E
34 102 f KEYCODE_F
35 103 g KEYCODE_G
36 104 h KEYCODE_H
37 105 i KEYCODE_I
38 106 j KEYCODE_J
39 107 k KEYCODE_K
40 108 l KEYCODE_L
41 109 m KEYCODE_M
42 110 n KEYCODE_N
43 111 o KEYCODE_O
44 112 p KEYCODE_P
45 113 q KEYCODE_Q
46 114 r KEYCODE_R
47 115 s KEYCODE_S
48 116 t KEYCODE_T
49 117 u KEYCODE_U
50 118 v KEYCODE_V
51 119 w KEYCODE_W
52 120 x KEYCODE_X
53 121 y KEYCODE_Y
54 122 z KEYCODE_Z
55 44 , KEYCODE_COMMA
56 46 . KEYCODE_PERIOD
57 0 �� KEYCODE_ALT_LEFT
58 0 �� KEYCODE_ALT_RIGHT
59 0 �� KEYCODE_SHIFT_LEFT
60 0 �� KEYCODE_SHIFT_RIGHT
61 9 KEYCODE_TAB
62 32 KEYCODE_SPACE
63 0 �� KEYCODE_SYM
64 0 �� KEYCODE_EXPLORER
65 0 �� KEYCODE_ENVELOPE
66 10 KEYCODE_ENTER
67 0 �� KEYCODE_DEL
68 96 ` KEYCODE_GRAVE
69 45 - KEYCODE_MINUS
70 61 = KEYCODE_EQUALS
71 91 [ KEYCODE_LEFT_BRACKET
72 93 ] KEYCODE_RIGHT_BRACKET
73 92 \ KEYCODE_BACKSLASH
74 59 ; KEYCODE_SEMICOLON
75 39 ' KEYCODE_APOSTROPHE
76 47 / KEYCODE_SLASH
77 64 @ KEYCODE_AT
78 0 �� KEYCODE_NUM
79 0 �� KEYCODE_HEADSETHOOK
80 0 �� KEYCODE_FOCUS
81 43 + KEYCODE_PLUS
82 0 �� KEYCODE_MENU
83 0 �� KEYCODE_NOTIFICATION
84 0 �� KEYCODE_SEARCH
85 0 �� KEYCODE_MEDIA_PLAY_PAUSE
86 0 �� KEYCODE_MEDIA_STOP
87 0 �� KEYCODE_MEDIA_NEXT
88 0 �� KEYCODE_MEDIA_PREVIOUS
89 0 �� KEYCODE_MEDIA_REWIND
90 0 �� KEYCODE_MEDIA_FAST_FORWARD
91 0 �� KEYCODE_MUTE
92 0 �� KEYCODE_PAGE_UP
93 0 �� KEYCODE_PAGE_DOWN
94 0 �� KEYCODE_PICTSYMBOLS
95 0 �� KEYCODE_SWITCH_CHARSET
96 0 �� KEYCODE_BUTTON_A
97 0 �� KEYCODE_BUTTON_B
98 0 �� KEYCODE_BUTTON_C
99 0 �� KEYCODE_BUTTON_X
100 0 �� KEYCODE_BUTTON_Y
101 0 �� KEYCODE_BUTTON_Z
102 0 �� KEYCODE_BUTTON_L1
103 0 �� KEYCODE_BUTTON_R1
104 0 �� KEYCODE_BUTTON_L2
105 0 �� KEYCODE_BUTTON_R2
106 0 �� KEYCODE_BUTTON_THUMBL
107 0 �� KEYCODE_BUTTON_THUMBR
108 0 �� KEYCODE_BUTTON_START
109 0 �� KEYCODE_BUTTON_SELECT
110 0 �� KEYCODE_BUTTON_MODE
111 0 �� KEYCODE_ESCAPE
112 0 �� KEYCODE_FORWARD_DEL
113 0 �� KEYCODE_CTRL_LEFT
114 0 �� KEYCODE_CTRL_RIGHT
115 0 �� KEYCODE_CAPS_LOCK
116 0 �� KEYCODE_SCROLL_LOCK
117 0 �� KEYCODE_META_LEFT
118 0 �� KEYCODE_META_RIGHT
119 0 �� KEYCODE_FUNCTION
120 0 �� KEYCODE_SYSRQ
121 0 �� KEYCODE_BREAK
122 0 �� KEYCODE_MOVE_HOME
123 0 �� KEYCODE_MOVE_END
124 0 �� KEYCODE_INSERT
125 0 �� KEYCODE_FORWARD
126 0 �� KEYCODE_MEDIA_PLAY
127 0 �� KEYCODE_MEDIA_PAUSE
128 0 �� KEYCODE_MEDIA_CLOSE
129 0 �� KEYCODE_MEDIA_EJECT
130 0 �� KEYCODE_MEDIA_RECORD
131 0 �� KEYCODE_F1
132 0 �� KEYCODE_F2
133 0 �� KEYCODE_F3
134 0 �� KEYCODE_F4
135 0 �� KEYCODE_F5
136 0 �� KEYCODE_F6
137 0 �� KEYCODE_F7
138 0 �� KEYCODE_F8
139 0 �� KEYCODE_F9
140 0 �� KEYCODE_F10
141 0 �� KEYCODE_F11
142 0 �� KEYCODE_F12
143 0 �� KEYCODE_NUM_LOCK
144 0 �� KEYCODE_NUMPAD_0
145 0 �� KEYCODE_NUMPAD_1
146 0 �� KEYCODE_NUMPAD_2
147 0 �� KEYCODE_NUMPAD_3
148 0 �� KEYCODE_NUMPAD_4
149 0 �� KEYCODE_NUMPAD_5
150 0 �� KEYCODE_NUMPAD_6
151 0 �� KEYCODE_NUMPAD_7
152 0 �� KEYCODE_NUMPAD_8
153 0 �� KEYCODE_NUMPAD_9
154 47 / KEYCODE_NUMPAD_DIVIDE
155 42 * KEYCODE_NUMPAD_MULTIPLY
156 45 - KEYCODE_NUMPAD_SUBTRACT
157 43 + KEYCODE_NUMPAD_ADD
158 0 �� KEYCODE_NUMPAD_DOT
159 44 , KEYCODE_NUMPAD_COMMA
160 10 KEYCODE_NUMPAD_ENTER
161 61 = KEYCODE_NUMPAD_EQUALS
162 40 ( KEYCODE_NUMPAD_LEFT_PAREN
163 41 ) KEYCODE_NUMPAD_RIGHT_PAREN
164 0 �� KEYCODE_VOLUME_MUTE
165 0 �� KEYCODE_INFO
166 0 �� KEYCODE_CHANNEL_UP
167 0 �� KEYCODE_CHANNEL_DOWN
168 0 �� KEYCODE_ZOOM_IN
169 0 �� KEYCODE_ZOOM_OUT
170 0 �� KEYCODE_TV
171 0 �� KEYCODE_WINDOW
172 0 �� KEYCODE_GUIDE
173 0 �� KEYCODE_DVR
174 0 �� KEYCODE_BOOKMARK
175 0 �� KEYCODE_CAPTIONS
176 0 �� KEYCODE_SETTINGS
177 0 �� KEYCODE_TV_POWER
178 0 �� KEYCODE_TV_INPUT
179 0 �� KEYCODE_STB_POWER
180 0 �� KEYCODE_STB_INPUT
181 0 �� KEYCODE_AVR_POWER
182 0 �� KEYCODE_AVR_INPUT
183 0 �� KEYCODE_PROG_RED
184 0 �� KEYCODE_PROG_GREEN
185 0 �� KEYCODE_PROG_YELLOW
186 0 �� KEYCODE_PROG_BLUE
187 0 �� KEYCODE_APP_SWITCH
188 0 �� KEYCODE_BUTTON_1
189 0 �� KEYCODE_BUTTON_2
190 0 �� KEYCODE_BUTTON_3
191 0 �� KEYCODE_BUTTON_4
192 0 �� KEYCODE_BUTTON_5
193 0 �� KEYCODE_BUTTON_6
194 0 �� KEYCODE_BUTTON_7
195 0 �� KEYCODE_BUTTON_8
196 0 �� KEYCODE_BUTTON_9
197 0 �� KEYCODE_BUTTON_10
198 0 �� KEYCODE_BUTTON_11
199 0 �� KEYCODE_BUTTON_12
200 0 �� KEYCODE_BUTTON_13
201 0 �� KEYCODE_BUTTON_14
202 0 �� KEYCODE_BUTTON_15
203 0 �� KEYCODE_BUTTON_16
204 0 �� KEYCODE_LANGUAGE_SWITCH
205 0 �� KEYCODE_MANNER_MODE
206 0 �� KEYCODE_3D_MODE
207 0 �� KEYCODE_CONTACTS
208 0 �� KEYCODE_CALENDAR
209 0 �� KEYCODE_MUSIC
210 0 �� KEYCODE_CALCULATOR
211 0 �� KEYCODE_ZENKAKU_HANKAKU
212 0 �� KEYCODE_EISU
213 0 �� KEYCODE_MUHENKAN
214 0 �� KEYCODE_HENKAN
215 0 �� KEYCODE_KATAKANA_HIRAGANA
216 0 �� KEYCODE_YEN
217 0 �� KEYCODE_RO
218 0 �� KEYCODE_KANA
219 0 �� KEYCODE_ASSIST
220 0 �� KEYCODE_BRIGHTNESS_DOWN
221 0 �� KEYCODE_BRIGHTNESS_UP
222 0 �� KEYCODE_MEDIA_AUDIO_TRACK
223 0 �� KEYCODE_SLEEP
224 0 �� KEYCODE_WAKEUP
225 0 �� KEYCODE_PAIRING
226 0 �� KEYCODE_MEDIA_TOP_MENU
227 0 �� KEYCODE_11
228 0 �� KEYCODE_12
229 0 �� KEYCODE_LAST_CHANNEL
230 0 �� KEYCODE_TV_DATA_SERVICE
231 0 �� KEYCODE_VOICE_ASSIST
232 0 �� KEYCODE_TV_RADIO_SERVICE
233 0 �� KEYCODE_TV_TELETEXT
234 0 �� KEYCODE_TV_NUMBER_ENTRY
235 0 �� KEYCODE_TV_TERRESTRIAL_ANALOG
236 0 �� KEYCODE_TV_TERRESTRIAL_DIGITAL
237 0 �� KEYCODE_TV_SATELLITE
238 0 �� KEYCODE_TV_SATELLITE_BS
239 0 �� KEYCODE_TV_SATELLITE_CS
240 0 �� KEYCODE_TV_SATELLITE_SERVICE
241 0 �� KEYCODE_TV_NETWORK
242 0 �� KEYCODE_TV_ANTENNA_CABLE
243 0 �� KEYCODE_TV_INPUT_HDMI_1
244 0 �� KEYCODE_TV_INPUT_HDMI_2
245 0 �� KEYCODE_TV_INPUT_HDMI_3
246 0 �� KEYCODE_TV_INPUT_HDMI_4
247 0 �� KEYCODE_TV_INPUT_COMPOSITE_1
248 0 �� KEYCODE_TV_INPUT_COMPOSITE_2
249 0 �� KEYCODE_TV_INPUT_COMPONENT_1
250 0 �� KEYCODE_TV_INPUT_COMPONENT_2
251 0 �� KEYCODE_TV_INPUT_VGA_1
252 0 �� KEYCODE_TV_AUDIO_DESCRIPTION
253 0 �� KEYCODE_TV_AUDIO_DESCRIPTION_MIX_UP
254 0 �� KEYCODE_TV_AUDIO_DESCRIPTION_MIX_DOWN
255 0 �� KEYCODE_TV_ZOOM_MODE
256 0 �� KEYCODE_TV_CONTENTS_MENU
257 0 �� KEYCODE_TV_MEDIA_CONTEXT_MENU
258 0 �� KEYCODE_TV_TIMER_PROGRAMMING
259 0 �� KEYCODE_HELP
260 0 �� KEYCODE_NAVIGATE_PREVIOUS
261 0 �� KEYCODE_NAVIGATE_NEXT
262 0 �� KEYCODE_NAVIGATE_IN
263 0 �� KEYCODE_NAVIGATE_OUT
264 0 �� KEYCODE_STEM_PRIMARY
265 0 �� KEYCODE_STEM_1
266 0 �� KEYCODE_STEM_2
267 0 �� KEYCODE_STEM_3
268 0 �� KEYCODE_DPAD_UP_LEFT
269 0 �� KEYCODE_DPAD_DOWN_LEFT
270 0 �� KEYCODE_DPAD_UP_RIGHT
271 0 �� KEYCODE_DPAD_DOWN_RIGHT
272 0 �� KEYCODE_MEDIA_SKIP_FORWARD
273 0 �� KEYCODE_MEDIA_SKIP_BACKWARD
274 0 �� KEYCODE_MEDIA_STEP_FORWARD
275 0 �� KEYCODE_MEDIA_STEP_BACKWARD
276 0 �� KEYCODE_SOFT_SLEEP
277 0 �� KEYCODE_CUT
278 0 �� KEYCODE_COPY
279 0 �� KEYCODE_PASTE
280 0 �� KEYCODE_SYSTEM_NAVIGATION_UP
281 0 �� KEYCODE_SYSTEM_NAVIGATION_DOWN
282 0 �� KEYCODE_SYSTEM_NAVIGATION_LEFT
283 0 �� KEYCODE_SYSTEM_NAVIGATION_RIGHT
死键
请注意，可能还需要 dead keys into account. The docs 说
The system recognizes the following Unicode characters as combining
diacritical dead key characters.
'\u0300': Grave accent.'\u0301': Acute accent.'\u0302': Circumflex accent.'\u0303': Tilde accent.'\u0308': Umlaut accent.
When a dead key is typed followed by another character, the dead key
and the following characters are composed. For example, when the user
types a grave accent dead key followed by the letter 'a', the result
is 'à'.
要获得死键 KeyEvent.getDeadChar(), COMBINING_ACCENT, and COMBINING_ACCENT_MASK are used. The following method is used in many open source projects 的组合，将硬键事件发送到 InputConnection。
/**
* This translates incoming hard key events in to edit operations on an
* InputConnection. It is only needed when using the
* PROCESS_HARD_KEYS option.
*/
private boolean translateKeyDown(int keyCode, KeyEvent event) {
mMetaState = MetaKeyKeyListener.handleKeyDown(mMetaState,
keyCode, event);
int c = event.getUnicodeChar(MetaKeyKeyListener.getMetaState(mMetaState));
mMetaState = MetaKeyKeyListener.adjustMetaAfterKeypress(mMetaState);
InputConnection ic = getCurrentInputConnection();
if (c == 0 || ic == null) {
return false;
}
boolean dead = false;
if ((c & KeyCharacterMap.COMBINING_ACCENT) != 0) {
dead = true;
c = c & KeyCharacterMap.COMBINING_ACCENT_MASK;
}
if (mComposing.length() > 0) {
char accent = mComposing.charAt(mComposing.length() -1 );
int composed = KeyEvent.getDeadChar(accent, c);
if (composed != 0) {
c = composed;
mComposing.setLength(mComposing.length()-1);
}
}
onKey(c, null);
return true;
}
另一种方式？
@pskink 提到 TextKeyListener, BaseKeyListener and KeyListener。这些很可能是更好的方法。但是，我找不到关于如何使用它们的充分解释和示例。
有284 KeyEvent key codes个。其中一些表示 Unicode 字符（如 KEYCODE_A 和 KEYCODE_1），而另一些表示控制字符（如 KEYCODE_DEL）。
我正在制作 custom view that handles keyboard input。它从输入连接获取大部分输入，但有时键盘会发送键码（通常与硬键盘输入相关联）。我也需要处理它。我是否需要详尽地处理每个控制键代码，然后将其余部分转换为文本（使用 (char) event.getUnicodeChar()），或者是否有一种内置的方法来区分文本代码和控制代码？
KeyEvent.getUnicodeChar() documentation 说
Returns 0 if the key is not one that is used to type Unicode characters.
因此很容易区分文本代码和控制代码，如下所示：
if (keyEvent.getUnicodeChar() != 0) {
// unicode text
char unicodeChar = (char) keyEvent.getUnicodeChar();
} else {
// control char
}
这是帮助我得出这个结论的列表：
// keyCode, Unicode, char, keyCode name
0 0 �� KEYCODE_UNKNOWN
1 0 �� KEYCODE_SOFT_LEFT
2 0 �� KEYCODE_SOFT_RIGHT
3 0 �� KEYCODE_HOME
4 0 �� KEYCODE_BACK
5 0 �� KEYCODE_CALL
6 0 �� KEYCODE_ENDCALL
7 48 0 KEYCODE_0
8 49 1 KEYCODE_1
9 50 2 KEYCODE_2
10 51 3 KEYCODE_3
11 52 4 KEYCODE_4
12 53 5 KEYCODE_5
13 54 6 KEYCODE_6
14 55 7 KEYCODE_7
15 56 8 KEYCODE_8
16 57 9 KEYCODE_9
17 42 * KEYCODE_STAR
18 35 # KEYCODE_POUND
19 0 �� KEYCODE_DPAD_UP
20 0 �� KEYCODE_DPAD_DOWN
21 0 �� KEYCODE_DPAD_LEFT
22 0 �� KEYCODE_DPAD_RIGHT
23 0 �� KEYCODE_DPAD_CENTER
24 0 �� KEYCODE_VOLUME_UP
25 0 �� KEYCODE_VOLUME_DOWN
26 0 �� KEYCODE_POWER
27 0 �� KEYCODE_CAMERA
28 0 �� KEYCODE_CLEAR
29 97 a KEYCODE_A
30 98 b KEYCODE_B
31 99 c KEYCODE_C
32 100 d KEYCODE_D
33 101 e KEYCODE_E
34 102 f KEYCODE_F
35 103 g KEYCODE_G
36 104 h KEYCODE_H
37 105 i KEYCODE_I
38 106 j KEYCODE_J
39 107 k KEYCODE_K
40 108 l KEYCODE_L
41 109 m KEYCODE_M
42 110 n KEYCODE_N
43 111 o KEYCODE_O
44 112 p KEYCODE_P
45 113 q KEYCODE_Q
46 114 r KEYCODE_R
47 115 s KEYCODE_S
48 116 t KEYCODE_T
49 117 u KEYCODE_U
50 118 v KEYCODE_V
51 119 w KEYCODE_W
52 120 x KEYCODE_X
53 121 y KEYCODE_Y
54 122 z KEYCODE_Z
55 44 , KEYCODE_COMMA
56 46 . KEYCODE_PERIOD
57 0 �� KEYCODE_ALT_LEFT
58 0 �� KEYCODE_ALT_RIGHT
59 0 �� KEYCODE_SHIFT_LEFT
60 0 �� KEYCODE_SHIFT_RIGHT
61 9 KEYCODE_TAB
62 32 KEYCODE_SPACE
63 0 �� KEYCODE_SYM
64 0 �� KEYCODE_EXPLORER
65 0 �� KEYCODE_ENVELOPE
66 10 KEYCODE_ENTER
67 0 �� KEYCODE_DEL
68 96 ` KEYCODE_GRAVE
69 45 - KEYCODE_MINUS
70 61 = KEYCODE_EQUALS
71 91 [ KEYCODE_LEFT_BRACKET
72 93 ] KEYCODE_RIGHT_BRACKET
73 92 \ KEYCODE_BACKSLASH
74 59 ; KEYCODE_SEMICOLON
75 39 ' KEYCODE_APOSTROPHE
76 47 / KEYCODE_SLASH
77 64 @ KEYCODE_AT
78 0 �� KEYCODE_NUM
79 0 �� KEYCODE_HEADSETHOOK
80 0 �� KEYCODE_FOCUS
81 43 + KEYCODE_PLUS
82 0 �� KEYCODE_MENU
83 0 �� KEYCODE_NOTIFICATION
84 0 �� KEYCODE_SEARCH
85 0 �� KEYCODE_MEDIA_PLAY_PAUSE
86 0 �� KEYCODE_MEDIA_STOP
87 0 �� KEYCODE_MEDIA_NEXT
88 0 �� KEYCODE_MEDIA_PREVIOUS
89 0 �� KEYCODE_MEDIA_REWIND
90 0 �� KEYCODE_MEDIA_FAST_FORWARD
91 0 �� KEYCODE_MUTE
92 0 �� KEYCODE_PAGE_UP
93 0 �� KEYCODE_PAGE_DOWN
94 0 �� KEYCODE_PICTSYMBOLS
95 0 �� KEYCODE_SWITCH_CHARSET
96 0 �� KEYCODE_BUTTON_A
97 0 �� KEYCODE_BUTTON_B
98 0 �� KEYCODE_BUTTON_C
99 0 �� KEYCODE_BUTTON_X
100 0 �� KEYCODE_BUTTON_Y
101 0 �� KEYCODE_BUTTON_Z
102 0 �� KEYCODE_BUTTON_L1
103 0 �� KEYCODE_BUTTON_R1
104 0 �� KEYCODE_BUTTON_L2
105 0 �� KEYCODE_BUTTON_R2
106 0 �� KEYCODE_BUTTON_THUMBL
107 0 �� KEYCODE_BUTTON_THUMBR
108 0 �� KEYCODE_BUTTON_START
109 0 �� KEYCODE_BUTTON_SELECT
110 0 �� KEYCODE_BUTTON_MODE
111 0 �� KEYCODE_ESCAPE
112 0 �� KEYCODE_FORWARD_DEL
113 0 �� KEYCODE_CTRL_LEFT
114 0 �� KEYCODE_CTRL_RIGHT
115 0 �� KEYCODE_CAPS_LOCK
116 0 �� KEYCODE_SCROLL_LOCK
117 0 �� KEYCODE_META_LEFT
118 0 �� KEYCODE_META_RIGHT
119 0 �� KEYCODE_FUNCTION
120 0 �� KEYCODE_SYSRQ
121 0 �� KEYCODE_BREAK
122 0 �� KEYCODE_MOVE_HOME
123 0 �� KEYCODE_MOVE_END
124 0 �� KEYCODE_INSERT
125 0 �� KEYCODE_FORWARD
126 0 �� KEYCODE_MEDIA_PLAY
127 0 �� KEYCODE_MEDIA_PAUSE
128 0 �� KEYCODE_MEDIA_CLOSE
129 0 �� KEYCODE_MEDIA_EJECT
130 0 �� KEYCODE_MEDIA_RECORD
131 0 �� KEYCODE_F1
132 0 �� KEYCODE_F2
133 0 �� KEYCODE_F3
134 0 �� KEYCODE_F4
135 0 �� KEYCODE_F5
136 0 �� KEYCODE_F6
137 0 �� KEYCODE_F7
138 0 �� KEYCODE_F8
139 0 �� KEYCODE_F9
140 0 �� KEYCODE_F10
141 0 �� KEYCODE_F11
142 0 �� KEYCODE_F12
143 0 �� KEYCODE_NUM_LOCK
144 0 �� KEYCODE_NUMPAD_0
145 0 �� KEYCODE_NUMPAD_1
146 0 �� KEYCODE_NUMPAD_2
147 0 �� KEYCODE_NUMPAD_3
148 0 �� KEYCODE_NUMPAD_4
149 0 �� KEYCODE_NUMPAD_5
150 0 �� KEYCODE_NUMPAD_6
151 0 �� KEYCODE_NUMPAD_7
152 0 �� KEYCODE_NUMPAD_8
153 0 �� KEYCODE_NUMPAD_9
154 47 / KEYCODE_NUMPAD_DIVIDE
155 42 * KEYCODE_NUMPAD_MULTIPLY
156 45 - KEYCODE_NUMPAD_SUBTRACT
157 43 + KEYCODE_NUMPAD_ADD
158 0 �� KEYCODE_NUMPAD_DOT
159 44 , KEYCODE_NUMPAD_COMMA
160 10 KEYCODE_NUMPAD_ENTER
161 61 = KEYCODE_NUMPAD_EQUALS
162 40 ( KEYCODE_NUMPAD_LEFT_PAREN
163 41 ) KEYCODE_NUMPAD_RIGHT_PAREN
164 0 �� KEYCODE_VOLUME_MUTE
165 0 �� KEYCODE_INFO
166 0 �� KEYCODE_CHANNEL_UP
167 0 �� KEYCODE_CHANNEL_DOWN
168 0 �� KEYCODE_ZOOM_IN
169 0 �� KEYCODE_ZOOM_OUT
170 0 �� KEYCODE_TV
171 0 �� KEYCODE_WINDOW
172 0 �� KEYCODE_GUIDE
173 0 �� KEYCODE_DVR
174 0 �� KEYCODE_BOOKMARK
175 0 �� KEYCODE_CAPTIONS
176 0 �� KEYCODE_SETTINGS
177 0 �� KEYCODE_TV_POWER
178 0 �� KEYCODE_TV_INPUT
179 0 �� KEYCODE_STB_POWER
180 0 �� KEYCODE_STB_INPUT
181 0 �� KEYCODE_AVR_POWER
182 0 �� KEYCODE_AVR_INPUT
183 0 �� KEYCODE_PROG_RED
184 0 �� KEYCODE_PROG_GREEN
185 0 �� KEYCODE_PROG_YELLOW
186 0 �� KEYCODE_PROG_BLUE
187 0 �� KEYCODE_APP_SWITCH
188 0 �� KEYCODE_BUTTON_1
189 0 �� KEYCODE_BUTTON_2
190 0 �� KEYCODE_BUTTON_3
191 0 �� KEYCODE_BUTTON_4
192 0 �� KEYCODE_BUTTON_5
193 0 �� KEYCODE_BUTTON_6
194 0 �� KEYCODE_BUTTON_7
195 0 �� KEYCODE_BUTTON_8
196 0 �� KEYCODE_BUTTON_9
197 0 �� KEYCODE_BUTTON_10
198 0 �� KEYCODE_BUTTON_11
199 0 �� KEYCODE_BUTTON_12
200 0 �� KEYCODE_BUTTON_13
201 0 �� KEYCODE_BUTTON_14
202 0 �� KEYCODE_BUTTON_15
203 0 �� KEYCODE_BUTTON_16
204 0 �� KEYCODE_LANGUAGE_SWITCH
205 0 �� KEYCODE_MANNER_MODE
206 0 �� KEYCODE_3D_MODE
207 0 �� KEYCODE_CONTACTS
208 0 �� KEYCODE_CALENDAR
209 0 �� KEYCODE_MUSIC
210 0 �� KEYCODE_CALCULATOR
211 0 �� KEYCODE_ZENKAKU_HANKAKU
212 0 �� KEYCODE_EISU
213 0 �� KEYCODE_MUHENKAN
214 0 �� KEYCODE_HENKAN
215 0 �� KEYCODE_KATAKANA_HIRAGANA
216 0 �� KEYCODE_YEN
217 0 �� KEYCODE_RO
218 0 �� KEYCODE_KANA
219 0 �� KEYCODE_ASSIST
220 0 �� KEYCODE_BRIGHTNESS_DOWN
221 0 �� KEYCODE_BRIGHTNESS_UP
222 0 �� KEYCODE_MEDIA_AUDIO_TRACK
223 0 �� KEYCODE_SLEEP
224 0 �� KEYCODE_WAKEUP
225 0 �� KEYCODE_PAIRING
226 0 �� KEYCODE_MEDIA_TOP_MENU
227 0 �� KEYCODE_11
228 0 �� KEYCODE_12
229 0 �� KEYCODE_LAST_CHANNEL
230 0 �� KEYCODE_TV_DATA_SERVICE
231 0 �� KEYCODE_VOICE_ASSIST
232 0 �� KEYCODE_TV_RADIO_SERVICE
233 0 �� KEYCODE_TV_TELETEXT
234 0 �� KEYCODE_TV_NUMBER_ENTRY
235 0 �� KEYCODE_TV_TERRESTRIAL_ANALOG
236 0 �� KEYCODE_TV_TERRESTRIAL_DIGITAL
237 0 �� KEYCODE_TV_SATELLITE
238 0 �� KEYCODE_TV_SATELLITE_BS
239 0 �� KEYCODE_TV_SATELLITE_CS
240 0 �� KEYCODE_TV_SATELLITE_SERVICE
241 0 �� KEYCODE_TV_NETWORK
242 0 �� KEYCODE_TV_ANTENNA_CABLE
243 0 �� KEYCODE_TV_INPUT_HDMI_1
244 0 �� KEYCODE_TV_INPUT_HDMI_2
245 0 �� KEYCODE_TV_INPUT_HDMI_3
246 0 �� KEYCODE_TV_INPUT_HDMI_4
247 0 �� KEYCODE_TV_INPUT_COMPOSITE_1
248 0 �� KEYCODE_TV_INPUT_COMPOSITE_2
249 0 �� KEYCODE_TV_INPUT_COMPONENT_1
250 0 �� KEYCODE_TV_INPUT_COMPONENT_2
251 0 �� KEYCODE_TV_INPUT_VGA_1
252 0 �� KEYCODE_TV_AUDIO_DESCRIPTION
253 0 �� KEYCODE_TV_AUDIO_DESCRIPTION_MIX_UP
254 0 �� KEYCODE_TV_AUDIO_DESCRIPTION_MIX_DOWN
255 0 �� KEYCODE_TV_ZOOM_MODE
256 0 �� KEYCODE_TV_CONTENTS_MENU
257 0 �� KEYCODE_TV_MEDIA_CONTEXT_MENU
258 0 �� KEYCODE_TV_TIMER_PROGRAMMING
259 0 �� KEYCODE_HELP
260 0 �� KEYCODE_NAVIGATE_PREVIOUS
261 0 �� KEYCODE_NAVIGATE_NEXT
262 0 �� KEYCODE_NAVIGATE_IN
263 0 �� KEYCODE_NAVIGATE_OUT
264 0 �� KEYCODE_STEM_PRIMARY
265 0 �� KEYCODE_STEM_1
266 0 �� KEYCODE_STEM_2
267 0 �� KEYCODE_STEM_3
268 0 �� KEYCODE_DPAD_UP_LEFT
269 0 �� KEYCODE_DPAD_DOWN_LEFT
270 0 �� KEYCODE_DPAD_UP_RIGHT
271 0 �� KEYCODE_DPAD_DOWN_RIGHT
272 0 �� KEYCODE_MEDIA_SKIP_FORWARD
273 0 �� KEYCODE_MEDIA_SKIP_BACKWARD
274 0 �� KEYCODE_MEDIA_STEP_FORWARD
275 0 �� KEYCODE_MEDIA_STEP_BACKWARD
276 0 �� KEYCODE_SOFT_SLEEP
277 0 �� KEYCODE_CUT
278 0 �� KEYCODE_COPY
279 0 �� KEYCODE_PASTE
280 0 �� KEYCODE_SYSTEM_NAVIGATION_UP
281 0 �� KEYCODE_SYSTEM_NAVIGATION_DOWN
282 0 �� KEYCODE_SYSTEM_NAVIGATION_LEFT
283 0 �� KEYCODE_SYSTEM_NAVIGATION_RIGHT
死键
请注意，可能还需要 dead keys into account. The docs 说
The system recognizes the following Unicode characters as combining diacritical dead key characters.
'\u0300': Grave accent.'\u0301': Acute accent.'\u0302': Circumflex accent.'\u0303': Tilde accent.'\u0308': Umlaut accent.When a dead key is typed followed by another character, the dead key and the following characters are composed. For example, when the user types a grave accent dead key followed by the letter 'a', the result is 'à'.
要获得死键 KeyEvent.getDeadChar(), COMBINING_ACCENT, and COMBINING_ACCENT_MASK are used. The following method is used in many open source projects 的组合，将硬键事件发送到 InputConnection。
/**
* This translates incoming hard key events in to edit operations on an
* InputConnection. It is only needed when using the
* PROCESS_HARD_KEYS option.
*/
private boolean translateKeyDown(int keyCode, KeyEvent event) {
mMetaState = MetaKeyKeyListener.handleKeyDown(mMetaState,
keyCode, event);
int c = event.getUnicodeChar(MetaKeyKeyListener.getMetaState(mMetaState));
mMetaState = MetaKeyKeyListener.adjustMetaAfterKeypress(mMetaState);
InputConnection ic = getCurrentInputConnection();
if (c == 0 || ic == null) {
return false;
}
boolean dead = false;
if ((c & KeyCharacterMap.COMBINING_ACCENT) != 0) {
dead = true;
c = c & KeyCharacterMap.COMBINING_ACCENT_MASK;
}
if (mComposing.length() > 0) {
char accent = mComposing.charAt(mComposing.length() -1 );
int composed = KeyEvent.getDeadChar(accent, c);
if (composed != 0) {
c = composed;
mComposing.setLength(mComposing.length()-1);
}
}
onKey(c, null);
return true;
}
另一种方式？
@pskink 提到 TextKeyListener, BaseKeyListener and KeyListener。这些很可能是更好的方法。但是，我找不到关于如何使用它们的充分解释和示例。