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！

您可能感兴趣的文章:Android取消EditText自动获取焦点默认行为Android 设置Edittext获取焦点并弹出软键盘Android取消EditText自动获取默认焦点360浏览器文本框获得焦点后被android软键盘遮罩该怎么办Android开发之滑动图片轮播标题焦点Android GridView中包含EditText的焦点重新获取方法Android 实现不依赖焦点和选中的TextView跑马灯Android videoview抢占焦点的处理方法Android基于TextView不获取焦点实现跑马灯效果Android OnFocuChangeListener焦点事件详解