出处:http://hi.baidu.com/mgqw/blog/item/ef91923810ca85f8b311c705.html
名词解释:
scancode: 驱动对硬件的标记
keycode: 上层应用程序所见的标记,跟硬件的标记不同, 一般为KEY_F1之类的宏
一般驱动将scancode绑定到keycode
对未绑定的scancode, 可以通过setkeycodes将将其绑定到未使用的keycode
注: 有些按键会被解释成acpi event, 可以通过acpi_listen来监听,但不一定成功,目前还没具体了解
模 拟按键是上层应用程序的行为, 所以不需要编译成模块,只需要想平常的应用程序那样编译就可以了, 不过它要包含<linux/input.h>这个文件, 同时要明确键盘对应的/dev/input/event[0-4]到底是哪个文件, 此外还需要以root权限来运行
赖半仙注解:
运行命令 cat /proc/bus/input/devices 在输出里面查找 xxx keyboard 对应的文件是/dev/input/event几。我开始想当然的以为键盘文件是event1,结果死人都调不出来,弄了很久最后从event0开始一个一个试,才发现我的手提电脑键盘文件对应的是event4。
在我的电脑上运行命令 ls /dev/input/event* 发现有好多输入设备…………
/dev/input/event0 /dev/input/event10 /dev/input/event2 /dev/input/event4 /dev/input/event6 /dev/input/event8
/dev/input/event1 /dev/input/event11 /dev/input/event3 /dev/input/event5 /dev/input/event7 /dev/input/event9
下面是 cat /proc/bus/input/devices 命令对应键盘文件的一段输出
I: Bus=0011 Vendor=0001 Product=0001 Version=ab41
N: Name="AT Translated Set 2 keyboard"
P: Phys=isa0060/serio0/input0
S: Sysfs=/devices/platform/i8042/serio0/input/input4
U: Uniq=
H: Handlers=kbd event4
B: EV=120013
B: KEY=8000 0 0 0 0 0 5007 2002000 380307c f800d001 feffffdf ffefffff ffffffff ffffffff
B: MSC=10
B: LED=7
下面的程序是模拟按键NumLock,就是控制小键盘灯的那个按键,按下去(运行程序没有问题)后小键盘灯就会点亮或者熄灭。
#include <linux/input.h> #include <time.h> #include <fcntl.h> #include <string.h> #include <errno.h> #include <stdio.h> void simulate_key(int fd, unsigned int keycode, int keyvalue) { struct input_event event; event.type = EV_KEY; event.code = keycode; event.value = keyvalue; gettimeofday(&event.time, 0); if (write(fd, &event, sizeof(event)) < 0) { printf("simulate key error/n"); return; }else printf("simuate key %d, %d/n", keycode, keyvalue); } int main ( int argc, char *argv[] ) { char *path = "/dev/input/event1"; unsigned int key_code = KEY_NUMLOCK; if (argc >= 3) { path = argv[1]; key_code = atoi(argv[2]); }else if (argc >= 2) path = argv[1]; int fd_kbd = open(path, O_RDWR); if(fd_kbd <= 0) { printf("error open keyboard:%s/n", strerror(errno)); return -1; } simulate_key(fd_kbd, key_code, 1); simulate_key(fd_kbd, key_code, 0); close(fd_kbd); return 0; } /* ---------- end of function main ---------- */
触发单击屏幕事件
public void myClickEvent(float x, float y) {
long firstTime = SystemClock.uptimeMillis();
final MotionEvent firstEvent = MotionEvent.obtain(firstTime, firstTime,
MotionEvent.ACTION_DOWN, x, y, 0);
long secondTime = firstTime + 30;
final MotionEvent secondEvent = MotionEvent.obtain(secondTime,
secondTime, MotionEvent.ACTION_UP, x, y, 0);
dispatchTouchEvent(firstEvent);
dispatchTouchEvent(secondEvent);
}
public void myClickEvent(float x, float y) {
long firstTime = SystemClock.uptimeMillis();
final MotionEvent firstEvent = MotionEvent.obtain(firstTime, firstTime,
MotionEvent.ACTION_DOWN, x, y, 0);
long secondTime = firstTime + 30;
final MotionEvent secondEvent = MotionEvent.obtain(secondTime,
secondTime, MotionEvent.ACTION_UP, x, y, 0);
dispatchTouchEvent(firstEvent);
dispatchTouchEvent(secondEvent);
}
sendevent /dev/input/event0 [TYPE] [CODE] [VALUE]
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;