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首页 > 软件编程 > Android > 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

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

投稿:lqh

这篇文章主要介绍了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的相关资料,需要的朋友可以参考下

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




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}

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

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