android Home键的缴获

 @Override  public boolean onKeyDown(int keyCode, KeyEvent event)  {    // TODO Auto-generated method stub    if(KeyEvent.KEYCODE_HOME==keyCode)      android.os.Process.killProcess(android.os.Process.myPid());    return super.onKeyDown(keyCode, event);  }  @Override  public void onAttachedToWindow()  {    // TODO Auto-generated method stub    this.getWindow().setType(WindowManager.LayoutParams.TYPE_KEYGUARD);       super.onAttachedToWindow();  }  加权限禁止Home键  <uses-permission android:name="android.permission.DISABLE_KEYGUARD"></uses-permission>