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

#include

#include

#include

#include

#include

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]

onTouchEvent

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;