android getevent、sendevent、input keyevent 使用说明

设备节点：

dev 字符设备节点：

shell@android:/dev/input $ ll
crw-rw---- root input 13, 64 2013-11-28 17:23 event0
crw-rw---- root input 13, 65 2013-11-28 17:23 event1
crw-rw---- root input 13, 66 2013-11-28 17:23 event2
crw-rw---- root input 13, 67 2013-11-28 17:23 event3
crw-rw---- root input 13, 68 2013-11-28 17:23 event4
crw-rw---- root input 13, 69 2013-11-28 17:23 event5
crw-rw---- root input 13, 70 2013-11-29 10:31 event6
crw-rw---- root input 13, 63 2013-11-28 17:23 mice
shell@android:/dev/input $

 

sys 设备节点：

shell@android:/sys/class/input $ ll
lrwxrwxrwx root root 2013-11-29 11:08 event0 -> ../../devices/platform/mtk-kpd/input/input0/event0
lrwxrwxrwx root root 2013-11-29 11:08 event1 -> ../../devices/virtual/input/input1/event1
lrwxrwxrwx root root 2013-11-29 11:08 event2 -> ../../devices/virtual/input/input2/event2
lrwxrwxrwx root root 2013-11-29 11:08 event3 -> ../../devices/virtual/input/input3/event3
lrwxrwxrwx root root 2013-11-29 11:08 event4 -> ../../devices/virtual/input/input4/event4
lrwxrwxrwx root root 2013-11-29 11:08 event5 -> ../../devices/virtual/input/input5/event5
lrwxrwxrwx root root 2013-11-29 11:08 event6 -> ../../devices/virtual/input/input6/event6
lrwxrwxrwx root root 2013-11-29 11:08 input0 -> ../../devices/platform/mtk-kpd/input/input0
lrwxrwxrwx root root 2013-11-29 11:08 input1 -> ../../devices/virtual/input/input1
lrwxrwxrwx root root 2013-11-29 11:08 input2 -> ../../devices/virtual/input/input2
lrwxrwxrwx root root 2013-11-28 17:23 input3 -> ../../devices/virtual/input/input3
lrwxrwxrwx root root 2013-11-28 17:23 input4 -> ../../devices/virtual/input/input4
lrwxrwxrwx root root 2013-11-28 17:23 input5 -> ../../devices/virtual/input/input5
lrwxrwxrwx root root 2013-11-29 11:08 input6 -> ../../devices/virtual/input/input6
lrwxrwxrwx root root 2013-11-29 11:08 mice -> ../../devices/virtual/input/mice
shell@android:/sys/class/input $

getevent :

执行adb shell getevent 可以查看到有几个input 设备、input event号及设备名的对应关系等信息：

liaohs@liaohs-11-04:~$ adb shell getevent
add device 1: /dev/input/event6
name: "AVRCP"
add device 2: /dev/input/event0
name: "mtk-kpd"
add device 3: /dev/input/event5
name: "mtk-tpd-kpd"
add device 4: /dev/input/event4
name: "mtk-tpd"
add device 5: /dev/input/event3
name: "LEV_KPD"
add device 6: /dev/input/event2
name: "hwmdata"
add device 7: /dev/input/event1
name: "ACCDET"

根据我测试getevent是有用的，使用方法如下

adb shell getevent /dev/input/event0 
0001 0074 00000001
0000 0000 00000000
0001 0074 00000000
0000 0000 00000000

获取到的event type code value参考/kernel/include/linux/input.h

根据我测试sendevent无效，我失败的测试方法如下如下：

adb shell sendevent /dev/input/event0 0001 0072 00000001 
adb shell sendevent /dev/input/event0 0000 0000 00000000 
adb shell sendevent /dev/input/event0 0001 0072 00000000 
adb shell sendevent /dev/input/event0 0000 0000 00000000

 

getevent -l 参数 :

130|shell@android:/ $ getevent -l dev/input/event4 
EV_ABS ABS_MT_TOUCH_MAJOR 00000001           //touch　事件的起始
EV_ABS ABS_MT_POSITION_X 00000233 　　　　 // touch x 座标
EV_ABS ABS_MT_POSITION_Y 000001bb                // touch y 座标
EV_ABS 003c 00000040                                             // touch 面积／压力
EV_ABS 003d 00000040 　　　　　　　　　　　　// touch 面积／压力　　
EV_ABS ABS_MT_TRACKING_ID 00000000 　　　// touch第几个手指　　　
EV_SYN SYN_MT_REPORT 00000000 　　　　　　//touch第几个手指的事件
EV_SYN SYN_REPORT 00000000                             //touch 一次事件的结事同步
EV_ABS ABS_MT_TOUCH_MAJOR 00000001 
EV_ABS ABS_MT_POSITION_X 0000022f 
EV_ABS ABS_MT_POSITION_Y 000001bb 
EV_ABS 003c 00000040 
EV_ABS 003d 00000040 
EV_ABS ABS_MT_TRACKING_ID 00000000 
EV_SYN SYN_MT_REPORT 00000000 
EV_SYN SYN_REPORT 00000000 
EV_ABS ABS_MT_TOUCH_MAJOR 00000001 
EV_ABS ABS_MT_POSITION_X 0000022c 
EV_ABS ABS_MT_POSITION_Y 000001bc 
EV_ABS 003c 00000041 
EV_ABS 003d 00000041 
EV_ABS ABS_MT_TRACKING_ID 00000000 
EV_SYN SYN_MT_REPORT 00000000 
EV_SYN SYN_REPORT 00000000

root@S939:/ # getevent -l dev/input/event0
EV_KEY       KEY_POWER            DOWN               //power key 按下事件 
EV_SYN       SYN_REPORT           00000000            //事件同步　
EV_KEY       KEY_POWER            UP                  
EV_SYN       SYN_REPORT           00000000            
EV_KEY       KEY_VOLUMEDOWN       DOWN                
EV_SYN       SYN_REPORT           00000000            
EV_KEY       KEY_VOLUMEDOWN       UP                  
EV_SYN       SYN_REPORT           00000000

sendevent、 input keyevent 使用：

send event无法使用，可以用input keyevent  xxx代替

其中xxx 代表Key code，参考：/frameworks/base/core/java/android/view/KeyEvent.java

下面是input keyevent几个比较常用的用法：

input keyevent 3    // Home

input keyevent 4    // Back

input keyevent 19  //Up

input keyevent 20  //Down

input keyevent 21  //Left

input keyevent 22  //Right

input keyevent 23  //Select/Ok

input keyevent 24  //Volume+

input keyevent 25  // Volume-

input keyevent 82  // Menu 菜单

input keyevent 7 // 数字0

input keyevent 8  // 数字1

input keyevent 26   // Power key

input keyevent 27   // Camera

dev设备接口使用参考纹编程代码：

bootable/recovery/minui/events.c

参考：

http://blog.csdn.net/kickxxx/article/details/7482392

http://blog.csdn.net/learnrose/article/details/6236890

http://blog.csdn.net/lichaoandy/article/details/6565893