Android给自定义按键添加广播和通过广播给当前焦点输入框赋值

一、给自定义按键添加广播

修改PhoneWindowManager.java中的interceptKeyBeforeDispatching方法

/frameworks/base/policy/src/com/android/internal/policy/impl/PhoneWindowManager.java

@Override
  public long interceptKeyBeforeDispatching(WindowState win, KeyEvent event, int policyFlags) {
    final boolean keyguardOn = keyguardOn();
    final int keyCode = event.getKeyCode();
    final int repeatCount = event.getRepeatCount();
    final int metaState = event.getmetaState();
    final int flags = event.getFlags();
    final boolean down = event.getAction() == KeyEvent.ACTION_DOWN;
    final boolean canceled = event.isCanceled();
    final boolean longPress = (flags & KeyEvent.FLAG_LONG_PRESS) != 0;
    final boolean virtualKey = event.getDeviceId() == KeyCharacterMap.VIRTUAL_KEYBOARD;
    final String isCitKeyTest=SystemProperties.get("persist.sys.startCitKeyTest");


    
    //添加自定义按键广播----开始
    switch (keyCode)
      {
 case 135:
 case 136:
 case 137:
 case 139:
 {
   if (repeatCount == 0) {
     
     Intent myKeyIntent = new Intent();
     
     
     if(down)
     {
myKeyIntent.setAction("com.rscja.android.KEY_DOWN");
     }
     else
     {
myKeyIntent.setAction("com.rscja.android.KEY_UP");
     }
     
   
     myKeyIntent.putExtra("keycode", keyCode);
     
     mContext.sendBroadcastAsUser(myKeyIntent, UserHandle.ALL); 
     
     
   
   }
 }
 
 
 
   break;
      }
      
      //添加自定义按键广播----结束




……
……
……
……

}

二、通过广播给当前焦点输入框赋值

修改InputMethodService.java中的onCreate()方法

/frameworks/base/core/java/android/inputmethodservice/InputMethodService.java

感谢阅读，希望能帮助到大家，谢谢大家对本站的 支持！