Android keyevent 中的各个值，在使用adb shell input 的时候用得到。

是从http://blog.csdn.net/huiguixian/article/details/8550170转过来的。

KEYCODE_UNKNOWN=0;

KEYCODE_SOFT_LEFT=1;

KEYCODE_SOFT_RIGHT=2;

KEYCODE_HOME=3;

KEYCODE_BACK=4;

KEYCODE_CALL=5;

KEYCODE_ENDCALL=6;

KEYCODE_0=7;

KEYCODE_1=8;

KEYCODE_2=9;

KEYCODE_3=10;

KEYCODE_4=11;

KEYCODE_5=12;

KEYCODE_6=13;

KEYCODE_7=14;

KEYCODE_8=15;

KEYCODE_9=16;

KEYCODE_STAR=17;

KEYCODE_POUND=18;

KEYCODE_DPAD_UP=19;

KEYCODE_DPAD_DOWN=20;

KEYCODE_DPAD_LEFT=21;

KEYCODE_DPAD_RIGHT=22;

KEYCODE_DPAD_CENTER=23;

KEYCODE_VOLUME_UP=24;

KEYCODE_VOLUME_DOWN=25;

KEYCODE_POWER=26;

KEYCODE_CAMERA=27;

KEYCODE_CLEAR=28;

KEYCODE_A=29;

KEYCODE_B=30;

KEYCODE_C=31;

KEYCODE_D=32;

KEYCODE_E=33;

KEYCODE_F=34;

KEYCODE_G=35;

KEYCODE_H=36;

KEYCODE_I=37;

KEYCODE_J=38;

KEYCODE_K=39;

KEYCODE_L=40;

KEYCODE_M=41;

KEYCODE_N=42;

KEYCODE_O=43;

KEYCODE_P=44;

KEYCODE_Q=45;

KEYCODE_R=46;

KEYCODE_S=47;

KEYCODE_T=48;

KEYCODE_U=49;

KEYCODE_V=50;

KEYCODE_W=51;

KEYCODE_X=52;

KEYCODE_Y=53;

KEYCODE_Z=54;

KEYCODE_COMMA=55;

KEYCODE_PERIOD=56;

KEYCODE_ALT_LEFT=57;

KEYCODE_ALT_RIGHT=58;

KEYCODE_SHIFT_LEFT=59;

KEYCODE_SHIFT_RIGHT=60;

KEYCODE_TAB=61;

KEYCODE_SPACE=62;

KEYCODE_SYM=63;

KEYCODE_EXPLORER=64;

KEYCODE_ENVELOPE=65;

KEYCODE_ENTER=66;

KEYCODE_DEL=67;

KEYCODE_GRAVE=68;

KEYCODE_MINUS=69;

KEYCODE_EQUALS=70;

KEYCODE_LEFT_BRACKET=71;

KEYCODE_RIGHT_BRACKET=72;

KEYCODE_BACKSLASH=73;

KEYCODE_SEMICOLON=74;

KEYCODE_APOSTROPHE=75;

KEYCODE_SLASH=76;

KEYCODE_AT=77;

KEYCODE_NUM=78;

KEYCODE_HEADSETHOOK=79;

KEYCODE_FOCUS=80;//*Camera*focus

KEYCODE_PLUS=81;

KEYCODE_MENU=82;

KEYCODE_NOTIFICATION=83;

KEYCODE_SEARCH=84;

KEYCODE_MEDIA_PLAY_PAUSE=85;

KEYCODE_MEDIA_STOP=86;

KEYCODE_MEDIA_NEXT=87;

KEYCODE_MEDIA_PREVIOUS=88;

KEYCODE_MEDIA_REWIND=89;

KEYCODE_MEDIA_FAST_FORWARD=90;

KEYCODE_MUTE=91;