#Complete list of key codes

Some of the other lists here are incomplete. The complete list can be found in the KeyEvent source code or documentation. The source code is ordered by integer value so I will use that here.

(Repetitive text removed to save space, all key codes are public static final int.)

/** Unknown key code. */
KEYCODE_UNKNOWN = 0;
/** Soft Left key.
 * Usually situated below the display on phones and used as a multi-function
 * feature key for selecting a software defined function shown on the bottom left
 * of the display. */
KEYCODE_SOFT_LEFT = 1;
/** Soft Right key.
 * Usually situated below the display on phones and used as a multi-function
 * feature key for selecting a software defined function shown on the bottom right
 * of the display. */
KEYCODE_SOFT_RIGHT = 2;
/** Home key.
 * This key is handled by the framework and is never delivered to applications. */
KEYCODE_HOME = 3;
/** Back key. */
KEYCODE_BACK = 4;
/** Call key. */
KEYCODE_CALL = 5;
/** End Call key. */
KEYCODE_ENDCALL = 6;
/** '0' key. */
KEYCODE_0 = 7;
/** '1' key. */
KEYCODE_1 = 8;
/** '2' key. */
KEYCODE_2 = 9;
/** '3' key. */
KEYCODE_3 = 10;
/** '4' key. */
KEYCODE_4 = 11;
/** '5' key. */
KEYCODE_5 = 12;
/** '6' key. */
KEYCODE_6 = 13;
/** '7' key. */
KEYCODE_7 = 14;
/** '8' key. */
KEYCODE_8 = 15;
/** '9' key. */
KEYCODE_9 = 16;
/** '*' key. */
KEYCODE_STAR = 17;
/** '#' key. */
KEYCODE_POUND = 18;
/** Directional Pad Up key.
 * May also be synthesized from trackball motions. */
KEYCODE_DPAD_UP = 19;
/** Directional Pad Down key.
 * May also be synthesized from trackball motions. */
KEYCODE_DPAD_DOWN = 20;
/** Directional Pad Left key.
 * May also be synthesized from trackball motions. */
KEYCODE_DPAD_LEFT = 21;
/** Directional Pad Right key.
 * May also be synthesized from trackball motions. */
KEYCODE_DPAD_RIGHT = 22;
/** Directional Pad Center key.
 * May also be synthesized from trackball motions. */
KEYCODE_DPAD_CENTER = 23;
/** Volume Up key.
 * Adjusts the speaker volume up. */
KEYCODE_VOLUME_UP = 24;
/** Volume Down key.
 * Adjusts the speaker volume down. */
KEYCODE_VOLUME_DOWN = 25;
/** Power key. */
KEYCODE_POWER = 26;
/** Camera key.
 * Used to launch a camera application or take pictures. */
KEYCODE_CAMERA = 27;
/** Clear key. */
KEYCODE_CLEAR = 28;
/** 'A' key. */
KEYCODE_A = 29;
/** 'B' key. */
KEYCODE_B = 30;
/** 'C' key. */
KEYCODE_C = 31;
/** 'D' key. */
KEYCODE_D = 32;
/** 'E' key. */
KEYCODE_E = 33;
/** 'F' key. */
KEYCODE_F = 34;
/** 'G' key. */
KEYCODE_G = 35;
/** 'H' key. */
KEYCODE_H = 36;
/** 'I' key. */
KEYCODE_I = 37;
/** 'J' key. */
KEYCODE_J = 38;
/** 'K' key. */
KEYCODE_K = 39;
/** 'L' key. */
KEYCODE_L = 40;
/** 'M' key. */
KEYCODE_M = 41;
/** 'N' key. */
KEYCODE_N = 42;
/** 'O' key. */
KEYCODE_O = 43;
/** 'P' key. */
KEYCODE_P = 44;
/** 'Q' key. */
KEYCODE_Q = 45;
/** 'R' key. */
KEYCODE_R = 46;
/** 'S' key. */
KEYCODE_S = 47;
/** 'T' key. */
KEYCODE_T = 48;
/** 'U' key. */
KEYCODE_U = 49;
/** 'V' key. */
KEYCODE_V = 50;
/** 'W' key. */
KEYCODE_W = 51;
/** 'X' key. */
KEYCODE_X = 52;
/** 'Y' key. */
KEYCODE_Y = 53;
/** 'Z' key. */
KEYCODE_Z = 54;
/** ',' key. */
KEYCODE_COMMA = 55;
/** '.' key. */
KEYCODE_PERIOD = 56;
/** Left Alt modifier key. */
KEYCODE_ALT_LEFT = 57;
/** Right Alt modifier key. */
KEYCODE_ALT_RIGHT = 58;
/** Left Shift modifier key. */
KEYCODE_SHIFT_LEFT = 59;
/** Right Shift modifier key. */
KEYCODE_SHIFT_RIGHT = 60;
/** Tab key. */
KEYCODE_TAB = 61;
/** Space key. */
KEYCODE_SPACE = 62;
/** Symbol modifier key.
 * Used to enter alternate symbols. */
KEYCODE_SYM = 63;
/** Explorer special function key.
 * Used to launch a browser application. */
KEYCODE_EXPLORER = 64;
/** Envelope special function key.
 * Used to launch a mail application. */
KEYCODE_ENVELOPE = 65;
/** Enter key. */
KEYCODE_ENTER = 66;
/** Backspace key.
 * Deletes characters before the insertion point, unlike {@link #KEYCODE_FORWARD_DEL}. */
KEYCODE_DEL = 67;
/** '`' (backtick) key. */
KEYCODE_GRAVE = 68;
/** '-'. */
KEYCODE_MINUS = 69;
/** '=' key. */
KEYCODE_EQUALS = 70;
/** '[' key. */
KEYCODE_LEFT_BRACKET = 71;
/** ']' key. */
KEYCODE_RIGHT_BRACKET = 72;
/** '\' key. */
KEYCODE_BACKSLASH = 73;
/** ';' key. */
KEYCODE_SEMICOLON = 74;
/** ''' (apostrophe) key. */
KEYCODE_APOSTROPHE = 75;
/** '/' key. */
KEYCODE_SLASH = 76;
/** '@' key. */
KEYCODE_AT = 77;
/** Number modifier key.
 * Used to enter numeric symbols.
 * This key is not Num Lock; it is more like {@link #KEYCODE_ALT_LEFT} and is
 * interpreted as an ALT key by {@link android.text.method.MetaKeyKeyListener}. */
KEYCODE_NUM = 78;
/** Headset Hook key.
 * Used to hang up calls and stop media. */
KEYCODE_HEADSETHOOK = 79;
/** Camera Focus key.
 * Used to focus the camera. */
KEYCODE_FOCUS = 80; // *Camera* focus
/** '+' key. */
KEYCODE_PLUS = 81;
/** Menu key. */
KEYCODE_MENU = 82;
/** Notification key. */
KEYCODE_NOTIFICATION = 83;
/** Search key. */
KEYCODE_SEARCH = 84;
/** Play/Pause media key. */
KEYCODE_MEDIA_PLAY_PAUSE= 85;
/** Stop media key. */
KEYCODE_MEDIA_STOP = 86;
/** Play Next media key. */
KEYCODE_MEDIA_NEXT = 87;
/** Play Previous media key. */
KEYCODE_MEDIA_PREVIOUS = 88;
/** Rewind media key. */
KEYCODE_MEDIA_REWIND = 89;
/** Fast Forward media key. */
KEYCODE_MEDIA_FAST_FORWARD = 90;
/** Mute key.
 * Mutes the microphone, unlike {@link #KEYCODE_VOLUME_MUTE}. */
KEYCODE_MUTE = 91;
/** Page Up key. */
KEYCODE_PAGE_UP = 92;
/** Page Down key. */
KEYCODE_PAGE_DOWN = 93;
/** Picture Symbols modifier key.
 * Used to switch symbol sets (Emoji, Kao-moji). */
KEYCODE_PICTSYMBOLS = 94; // switch symbol-sets (Emoji,Kao-moji)
/** Switch Charset modifier key.
 * Used to switch character sets (Kanji, Katakana). */
KEYCODE_SWITCH_CHARSET = 95; // switch char-sets (Kanji,Katakana)
/** A Button key.
 * On a game controller, the A button should be either the button labeled A
 * or the first button on the bottom row of controller buttons. */
KEYCODE_BUTTON_A = 96;
/** B Button key.
 * On a game controller, the B button should be either the button labeled B
 * or the second button on the bottom row of controller buttons. */
KEYCODE_BUTTON_B = 97;
/** C Button key.
 * On a game controller, the C button should be either the button labeled C
 * or the third button on the bottom row of controller buttons. */
KEYCODE_BUTTON_C = 98;
/** X Button key.
 * On a game controller, the X button should be either the button labeled X
 * or the first button on the upper row of controller buttons. */
KEYCODE_BUTTON_X = 99;
/** Y Button key.
 * On a game controller, the Y button should be either the button labeled Y
 * or the second button on the upper row of controller buttons. */
KEYCODE_BUTTON_Y = 100;
/** Z Button key.
 * On a game controller, the Z button should be either the button labeled Z
 * or the third button on the upper row of controller buttons. */
KEYCODE_BUTTON_Z = 101;
/** L1 Button key.
 * On a game controller, the L1 button should be either the button labeled L1 (or L)
 * or the top left trigger button. */
KEYCODE_BUTTON_L1 = 102;
/** R1 Button key.
 * On a game controller, the R1 button should be either the button labeled R1 (or R)
 * or the top right trigger button. */
KEYCODE_BUTTON_R1 = 103;
/** L2 Button key.
 * On a game controller, the L2 button should be either the button labeled L2
 * or the bottom left trigger button. */
KEYCODE_BUTTON_L2 = 104;
/** R2 Button key.
 * On a game controller, the R2 button should be either the button labeled R2
 * or the bottom right trigger button. */
KEYCODE_BUTTON_R2 = 105;
/** Left Thumb Button key.
 * On a game controller, the left thumb button indicates that the left (or only)
 * joystick is pressed. */
KEYCODE_BUTTON_THUMBL = 106;
/** Right Thumb Button key.
 * On a game controller, the right thumb button indicates that the right
 * joystick is pressed. */
KEYCODE_BUTTON_THUMBR = 107;
/** Start Button key.
 * On a game controller, the button labeled Start. */
KEYCODE_BUTTON_START = 108;
/** Select Button key.
 * On a game controller, the button labeled Select. */
KEYCODE_BUTTON_SELECT = 109;
/** Mode Button key.
 * On a game controller, the button labeled Mode. */
KEYCODE_BUTTON_MODE = 110;
/** Escape key. */
KEYCODE_ESCAPE = 111;
/** Forward Delete key.
 * Deletes characters ahead of the insertion point, unlike {@link #KEYCODE_DEL}. */
KEYCODE_FORWARD_DEL = 112;
/** Left Control modifier key. */
KEYCODE_CTRL_LEFT = 113;
/** Right Control modifier key. */
KEYCODE_CTRL_RIGHT = 114;
/** Caps Lock key. */
KEYCODE_CAPS_LOCK = 115;
/** Scroll Lock key. */
KEYCODE_SCROLL_LOCK = 116;
/** Left Meta modifier key. */
KEYCODE_META_LEFT = 117;
/** Right Meta modifier key. */
KEYCODE_META_RIGHT = 118;
/** Function modifier key. */
KEYCODE_FUNCTION = 119;
/** System Request / Print Screen key. */
KEYCODE_SYSRQ = 120;
/** Break / Pause key. */
KEYCODE_BREAK = 121;
/** Home Movement key.
 * Used for scrolling or moving the cursor around to the start of a line
 * or to the top of a list. */
KEYCODE_MOVE_HOME = 122;
/** End Movement key.
 * Used for scrolling or moving the cursor around to the end of a line
 * or to the bottom of a list. */
KEYCODE_MOVE_END = 123;
/** Insert key.
 * Toggles insert / overwrite edit mode. */
KEYCODE_INSERT = 124;
/** Forward key.
 * Navigates forward in the history stack. Complement of {@link #KEYCODE_BACK}. */
KEYCODE_FORWARD = 125;
/** Play media key. */
KEYCODE_MEDIA_PLAY = 126;
/** Pause media key. */
KEYCODE_MEDIA_PAUSE = 127;
/** Close media key.
 * May be used to close a CD tray, for example. */
KEYCODE_MEDIA_CLOSE = 128;
/** Eject media key.
 * May be used to eject a CD tray, for example. */
KEYCODE_MEDIA_EJECT = 129;
/** Record media key. */
KEYCODE_MEDIA_RECORD = 130;
/** F1 key. */
KEYCODE_F1 = 131;
/** F2 key. */
KEYCODE_F2 = 132;
/** F3 key. */
KEYCODE_F3 = 133;
/** F4 key. */
KEYCODE_F4 = 134;
/** F5 key. */
KEYCODE_F5 = 135;
/** F6 key. */
KEYCODE_F6 = 136;
/** F7 key. */
KEYCODE_F7 = 137;
/** F8 key. */
KEYCODE_F8 = 138;
/** F9 key. */
KEYCODE_F9 = 139;
/** F10 key. */
KEYCODE_F10 = 140;
/** F11 key. */
KEYCODE_F11 = 141;
/** F12 key. */
KEYCODE_F12 = 142;
/** Num Lock key.
 * This is the Num Lock key; it is different from {@link #KEYCODE_NUM}.
 * This key alters the behavior of other keys on the numeric keypad. */
KEYCODE_NUM_LOCK = 143;
/** Numeric keypad '0' key. */
KEYCODE_NUMPAD_0 = 144;
/** Numeric keypad '1' key. */
KEYCODE_NUMPAD_1 = 145;
/** Numeric keypad '2' key. */
KEYCODE_NUMPAD_2 = 146;
/** Numeric keypad '3' key. */
KEYCODE_NUMPAD_3 = 147;
/** Numeric keypad '4' key. */
KEYCODE_NUMPAD_4 = 148;
/** Numeric keypad '5' key. */
KEYCODE_NUMPAD_5 = 149;
/** Numeric keypad '6' key. */
KEYCODE_NUMPAD_6 = 150;
/** Numeric keypad '7' key. */
KEYCODE_NUMPAD_7 = 151;
/** Numeric keypad '8' key. */
KEYCODE_NUMPAD_8 = 152;
/** Numeric keypad '9' key. */
KEYCODE_NUMPAD_9 = 153;
/** Numeric keypad '/' key (for division). */
KEYCODE_NUMPAD_DIVIDE = 154;
/** Numeric keypad '*' key (for multiplication). */
KEYCODE_NUMPAD_MULTIPLY = 155;
/** Numeric keypad '-' key (for subtraction). */
KEYCODE_NUMPAD_SUBTRACT = 156;
/** Numeric keypad '+' key (for addition). */
KEYCODE_NUMPAD_ADD = 157;
/** Numeric keypad '.' key (for decimals or digit grouping). */
KEYCODE_NUMPAD_DOT = 158;
/** Numeric keypad ',' key (for decimals or digit grouping). */
KEYCODE_NUMPAD_COMMA = 159;
/** Numeric keypad Enter key. */
KEYCODE_NUMPAD_ENTER = 160;
/** Numeric keypad '=' key. */
KEYCODE_NUMPAD_EQUALS = 161;
/** Numeric keypad '(' key. */
KEYCODE_NUMPAD_LEFT_PAREN = 162;
/** Numeric keypad ')' key. */
KEYCODE_NUMPAD_RIGHT_PAREN = 163;
/** Volume Mute key.
 * Mutes the speaker, unlike {@link #KEYCODE_MUTE}.
 * This key should normally be implemented as a toggle such that the first press
 * mutes the speaker and the second press restores the original volume. */
KEYCODE_VOLUME_MUTE = 164;
/** Info key.
 * Common on TV remotes to show additional information related to what is
 * currently being viewed. */
KEYCODE_INFO = 165;
/** Channel up key.
 * On TV remotes, increments the television channel. */
KEYCODE_CHANNEL_UP = 166;
/** Channel down key.
 * On TV remotes, decrements the television channel. */
KEYCODE_CHANNEL_DOWN = 167;
/** Zoom in key. */
KEYCODE_ZOOM_IN = 168;
/** Zoom out key. */
KEYCODE_ZOOM_OUT = 169;
/** TV key.
 * On TV remotes, switches to viewing live TV. */
KEYCODE_TV = 170;
/** Window key.
 * On TV remotes, toggles picture-in-picture mode or other windowing functions. */
KEYCODE_WINDOW = 171;
/** Guide key.
 * On TV remotes, shows a programming guide. */
KEYCODE_GUIDE = 172;
/** DVR key.
 * On some TV remotes, switches to a DVR mode for recorded shows. */
KEYCODE_DVR = 173;
/** Bookmark key.
 * On some TV remotes, bookmarks content or web pages. */
KEYCODE_BOOKMARK = 174;
/** Toggle captions key.
 * Switches the mode for closed-captioning text, for example during television shows. */
KEYCODE_CAPTIONS = 175;
/** Settings key.
 * Starts the system settings activity. */
KEYCODE_SETTINGS = 176;
/** TV power key.
 * On TV remotes, toggles the power on a television screen. */
KEYCODE_TV_POWER = 177;
/** TV input key.
 * On TV remotes, switches the input on a television screen. */
KEYCODE_TV_INPUT = 178;
/** Set-top-box power key.
 * On TV remotes, toggles the power on an external Set-top-box. */
KEYCODE_STB_POWER = 179;
/** Set-top-box input key.
 * On TV remotes, switches the input mode on an external Set-top-box. */
KEYCODE_STB_INPUT = 180;
/** A/V Receiver power key.
 * On TV remotes, toggles the power on an external A/V Receiver. */
KEYCODE_AVR_POWER = 181;
/** A/V Receiver input key.
 * On TV remotes, switches the input mode on an external A/V Receiver. */
KEYCODE_AVR_INPUT = 182;
/** Red "programmable" key.
 * On TV remotes, acts as a contextual/programmable key. */
KEYCODE_PROG_RED = 183;
/** Green "programmable" key.
 * On TV remotes, actsas a contextual/programmable key. */
KEYCODE_PROG_GREEN = 184;
/** Yellow "programmable" key.
 * On TV remotes, acts as a contextual/programmable key. */
KEYCODE_PROG_YELLOW = 185;
/** Blue "programmable" key.
 * On TV remotes, acts as a contextual/programmable key. */
KEYCODE_PROG_BLUE = 186;
/** App switch key.
 * Should bring up the application switcher dialog. */
KEYCODE_APP_SWITCH = 187;
/** Generic Game Pad Button #1.*/
KEYCODE_BUTTON_1 = 188;
/** Generic Game Pad Button #2.*/
KEYCODE_BUTTON_2 = 189;
/** Generic Game Pad Button #3.*/
KEYCODE_BUTTON_3 = 190;
/** Generic Game Pad Button #4.*/
KEYCODE_BUTTON_4 = 191;
/** Generic Game Pad Button #5.*/
KEYCODE_BUTTON_5 = 192;
/** Generic Game Pad Button #6.*/
KEYCODE_BUTTON_6 = 193;
/** Generic Game Pad Button #7.*/
KEYCODE_BUTTON_7 = 194;
/** Generic Game Pad Button #8.*/
KEYCODE_BUTTON_8 = 195;
/** Generic Game Pad Button #9.*/
KEYCODE_BUTTON_9 = 196;
/** Generic Game Pad Button #10.*/
KEYCODE_BUTTON_10 = 197;
/** Generic Game Pad Button #11.*/
KEYCODE_BUTTON_11 = 198;
/** Generic Game Pad Button #12.*/
KEYCODE_BUTTON_12 = 199;
/** Generic Game Pad Button #13.*/
KEYCODE_BUTTON_13 = 200;
/** Generic Game Pad Button #14.*/
KEYCODE_BUTTON_14 = 201;
/** Generic Game Pad Button #15.*/
KEYCODE_BUTTON_15 = 202;
/** Generic Game Pad Button #16.*/
KEYCODE_BUTTON_16 = 203;
/** Language Switch key.
 * Toggles the current input language such as switching between English and Japanese on
 * a QWERTY keyboard. On some devices, the same function may be performed by
 * pressing Shift+Spacebar. */
KEYCODE_LANGUAGE_SWITCH = 204;
/** Manner Mode key.
 * Toggles silent or vibrate mode on and off to make the device behave more politely
 * in certain settings such as on a crowded train. On some devices, the key may only
 * operate when long-pressed. */
KEYCODE_MANNER_MODE = 205;
/** 3D Mode key.
 * Toggles the display between 2D and 3D mode. */
KEYCODE_3D_MODE = 206;
/** Contacts special function key.
 * Used to launch an address book application. */
KEYCODE_CONTACTS = 207;
/** Calendar special function key.
 * Used to launch a calendar application. */
KEYCODE_CALENDAR = 208;
/** Music special function key.
 * Used to launch a music player application. */
KEYCODE_MUSIC = 209;
/** Calculator special function key.
 * Used to launch a calculator application. */
KEYCODE_CALCULATOR = 210;
/** Japanese full-width / half-width key. */
KEYCODE_ZENKAKU_HANKAKU = 211;
/** Japanese alphanumeric key. */
KEYCODE_EISU = 212;
/** Japanese non-conversion key. */
KEYCODE_MUHENKAN = 213;
/** Japanese conversion key. */
KEYCODE_HENKAN = 214;
/** Japanese katakana / hiragana key. */
KEYCODE_KATAKANA_HIRAGANA = 215;
/** Japanese Yen key. */
KEYCODE_YEN = 216;
/** Japanese Ro key. */
KEYCODE_RO = 217;
/** Japanese kana key. */
KEYCODE_KANA = 218;
/** Assist key.
 * Launches the global assist activity. Not delivered to applications. */
KEYCODE_ASSIST = 219;
/** Brightness Down key.
 * Adjusts the screen brightness down. */
KEYCODE_BRIGHTNESS_DOWN = 220;
/** Brightness Up key.
 * Adjusts the screen brightness up. */
KEYCODE_BRIGHTNESS_UP = 221;
/** Audio Track key.
 * Switches the audio tracks. */
KEYCODE_MEDIA_AUDIO_TRACK = 222;
/** Sleep key.
 * Puts the device to sleep. Behaves somewhat like {@link #KEYCODE_POWER} but it
 * has no effect if the device is already asleep. */
KEYCODE_SLEEP = 223;
/** Wakeup key.
 * Wakes up the device. Behaves somewhat like {@link #KEYCODE_POWER} but it
 * has no effect if the device is already awake. */
KEYCODE_WAKEUP = 224;
/** Pairing key.
 * Initiates peripheral pairing mode. Useful for pairing remote control
 * devices or game controllers, especially if no other input mode is
 * available. */
KEYCODE_PAIRING = 225;
/** Media Top Menu key.
 * Goes to the top of media menu. */
KEYCODE_MEDIA_TOP_MENU = 226;
/** '11' key. */
KEYCODE_11 = 227;
/** '12' key. */
KEYCODE_12 = 228;
/** Last Channel key.
 * Goes to the last viewed channel. */
KEYCODE_LAST_CHANNEL = 229;
/** TV data service key.
 * Displays data services like weather, sports. */
KEYCODE_TV_DATA_SERVICE = 230;
/** Voice Assist key.
 * Launches the global voice assist activity. Not delivered to applications. */
KEYCODE_VOICE_ASSIST = 231;
/** Radio key.
 * Toggles TV service / Radio service. */
KEYCODE_TV_RADIO_SERVICE = 232;
/** Teletext key.
 * Displays Teletext service. */
KEYCODE_TV_TELETEXT = 233;
/** Number entry key.
 * Initiates to enter multi-digit channel nubmber when each digit key is assigned
 * for selecting separate channel. Corresponds to Number Entry Mode (0x1D) of CEC
 * User Control Code. */
KEYCODE_TV_NUMBER_ENTRY = 234;
/** Analog Terrestrial key.
 * Switches to analog terrestrial broadcast service. */
KEYCODE_TV_TERRESTRIAL_ANALOG = 235;
/** Digital Terrestrial key.
 * Switches to digital terrestrial broadcast service. */
KEYCODE_TV_TERRESTRIAL_DIGITAL = 236;
/** Satellite key.
 * Switches to digital satellite broadcast service. */
KEYCODE_TV_SATELLITE = 237;
/** BS key.
 * Switches to BS digital satellite broadcasting service available in Japan. */
KEYCODE_TV_SATELLITE_BS = 238;
/** CS key.
 * Switches to CS digital satellite broadcasting service available in Japan. */
KEYCODE_TV_SATELLITE_CS = 239;
/** BS/CS key.
 * Toggles between BS and CS digital satellite services. */
KEYCODE_TV_SATELLITE_SERVICE = 240;
/** Toggle Network key.
 * Toggles selecting broacast services. */
KEYCODE_TV_NETWORK = 241;
/** Antenna/Cable key.
 * Toggles broadcast input source between antenna and cable. */
KEYCODE_TV_ANTENNA_CABLE = 242;
/** HDMI #1 key.
 * Switches to HDMI input #1. */
KEYCODE_TV_INPUT_HDMI_1 = 243;
/** HDMI #2 key.
 * Switches to HDMI input #2. */
KEYCODE_TV_INPUT_HDMI_2 = 244;
/** HDMI #3 key.
 * Switches to HDMI input #3. */
KEYCODE_TV_INPUT_HDMI_3 = 245;
/** HDMI #4 key.
 * Switches to HDMI input #4. */
KEYCODE_TV_INPUT_HDMI_4 = 246;
/** Composite #1 key.
 * Switches to composite video input #1. */
KEYCODE_TV_INPUT_COMPOSITE_1 = 247;
/** Composite #2 key.
 * Switches to composite video input #2. */
KEYCODE_TV_INPUT_COMPOSITE_2 = 248;
/** Component #1 key.
 * Switches to component video input #1. */
KEYCODE_TV_INPUT_COMPONENT_1 = 249;
/** Component #2 key.
 * Switches to component video input #2. */
KEYCODE_TV_INPUT_COMPONENT_2 = 250;
/** VGA #1 key.
 * Switches to VGA (analog RGB) input #1. */
KEYCODE_TV_INPUT_VGA_1 = 251;
/** Audio description key.
 * Toggles audio description off / on. */
KEYCODE_TV_AUDIO_DESCRIPTION = 252;
/** Audio description mixing volume up key.
 * Louden audio description volume as compared with normal audio volume. */
KEYCODE_TV_AUDIO_DESCRIPTION_MIX_UP = 253;
/** Audio description mixing volume down key.
 * Lessen audio description volume as compared with normal audio volume. */
KEYCODE_TV_AUDIO_DESCRIPTION_MIX_DOWN = 254;
/** Zoom mode key.
 * Changes Zoom mode (Normal, Full, Zoom, Wide-zoom, etc.) */
KEYCODE_TV_ZOOM_MODE = 255;
/** Contents menu key.
 * Goes to the title list. Corresponds to Contents Menu (0x0B) of CEC User Control
 * Code */
KEYCODE_TV_CONTENTS_MENU = 256;
/** Media context menu key.
 * Goes to the context menu of media contents. Corresponds to Media Context-sensitive
 * Menu (0x11) of CEC User Control Code. */
KEYCODE_TV_MEDIA_CONTEXT_MENU = 257;
/** Timer programming key.
 * Goes to the timer recording menu. Corresponds to Timer Programming (0x54) of
 * CEC User Control Code. */
KEYCODE_TV_TIMER_PROGRAMMING = 258;
/** Help key. */
KEYCODE_HELP = 259;
/** Navigate to previous key.
 * Goes backward by one item in an ordered collection of items. */
KEYCODE_NAVIGATE_PREVIOUS = 260;
/** Navigate to next key.
 * Advances to the next item in an ordered collection of items. */
KEYCODE_NAVIGATE_NEXT = 261;
/** Navigate in key.
 * Activates the item that currently has focus or expands to the next level of a navigation
 * hierarchy. */
KEYCODE_NAVIGATE_IN = 262;
/** Navigate out key.
 * Backs out one level of a navigation hierarchy or collapses the item that currently has
 * focus. */
KEYCODE_NAVIGATE_OUT = 263;
/** Primary stem key for Wear
 * Main power/reset button on watch. */
KEYCODE_STEM_PRIMARY = 264;
/** Generic stem key 1 for Wear */
KEYCODE_STEM_1 = 265;
/** Generic stem key 2 for Wear */
KEYCODE_STEM_2 = 266;
/** Generic stem key 3 for Wear */
KEYCODE_STEM_3 = 267;
/** Directional Pad Up-Left */
KEYCODE_DPAD_UP_LEFT = 268;
/** Directional Pad Down-Left */
KEYCODE_DPAD_DOWN_LEFT = 269;
/** Directional Pad Up-Right */
KEYCODE_DPAD_UP_RIGHT = 270;
/** Directional Pad Down-Right */
KEYCODE_DPAD_DOWN_RIGHT = 271;
/** Skip forward media key. */
KEYCODE_MEDIA_SKIP_FORWARD = 272;
/** Skip backward media key. */
KEYCODE_MEDIA_SKIP_BACKWARD = 273;
/** Step forward media key.
 * Steps media forward, one frame at a time. */
KEYCODE_MEDIA_STEP_FORWARD = 274;
/** Step backward media key.
 * Steps media backward, one frame at a time. */
KEYCODE_MEDIA_STEP_BACKWARD = 275;
/** put device to sleep unless a wakelock is held. */
KEYCODE_SOFT_SLEEP = 276;
/** Cut key. */
KEYCODE_CUT = 277;
/** Copy key. */
KEYCODE_COPY = 278;
/** Paste key. */
KEYCODE_PASTE = 279;
/** Consumed by the system for navigation up */
KEYCODE_SYSTEM_NAVIGATION_UP = 280;
/** Consumed by the system for navigation down */
KEYCODE_SYSTEM_NAVIGATION_DOWN = 281;
/** Consumed by the system for navigation left*/
KEYCODE_SYSTEM_NAVIGATION_LEFT = 282;
/** Consumed by the system for navigation right */
KEYCODE_SYSTEM_NAVIGATION_RIGHT = 283;

  /** Key code constant: Show all apps */
public static final int KEYCODE_ALL_APPS = 284;
/** Key code constant: Refresh key. */
public static final int KEYCODE_REFRESH = 285;
/** Key code constant: Thumbs up key. Apps can use this to let user upvote content. */
public static final int KEYCODE_THUMBS_UP = 286;
/** Key code constant: Thumbs down key. Apps can use this to let user downvote content. */
public static final int KEYCODE_THUMBS_DOWN = 287;

###Notes

• Currently the last key code is KEYCODE_SYSTEM_NAVIGATION_RIGHT, which is 283 (but check the source code to make sure this is still true). So you could loop through them like this:

    for (int keyCode = 0; keyCode <= 287; keyCode++) {
  
    }
  

• Most input to EditText (or a custom view that accepts keyboard input) from an Input Method Editor (IME) is done using an Input Connection, so many key codes are not sent at all in this case. See this answer.

KeyEvent: Each key press is described by a sequence of key events, Key events are generally accompanied by a key code.

KeyCode: is a constant that define the event, and is defined inside KeyEvent Class.

For example if you want to detect the KeyEvent "ENTER" :

 @Override
  public boolean onKeyDown( int keyCode, KeyEvent event ) {
    if( keyCode == KeyEvent.KEYCODE_ENTER) {
      //Do something...
      return true; 
    }
    return super.onKeyDown( keyCode, event );
  }

The KeyEvent.getUnicodeChar() documentation says

Returns 0 if the key is not one that is used to type Unicode characters.

Thus it is easy to differentiate text codes from control codes like this:

if (keyEvent.getUnicodeChar() != 0) {
    // unicode text
    char unicodeChar = (char) keyEvent.getUnicodeChar();
} else {
    // control char
}

Here is a list that helped me reach this conclution:

// 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

Dead keys

Note that it might also be necessary to take dead keys into account. The docs say

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'.

To get the dead key a combination of KeyEvent.getDeadChar(), COMBINING_ACCENT, and COMBINING_ACCENT_MASK are used. The following method is used in many open source projects to send hard key events on to the 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;
}

Another way?

@pskink mentions TextKeyListener, BaseKeyListener and KeyListener. These may very well be a better way to go. However, I was unable to find adequate explanation and examples of how to use them.