Question

In my android app I set

this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN );
Then my touch screen event doesnt’ work any more.

Further Explaining,

I have a button and onClick it changes the contentView by setContentView(R.layout.choose_player);.
It works fine. But if you take the focus to the button by the trackball(making it yellow) and tap on it, it gives the exception.

java.lang.IllegalArgumentException: parameter must be a descendant of this view

public void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  requestWindowFeature(Window.FEATURE_NO_TITLE);     
  this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                           WindowManager.LayoutParams.FLAG_FULLSCREEN);         
  setContentView(R.layout.main1);    
} 

public void onClick(View v) {    
  setContentView(R.layout.main2); 
}

Answer 1

you use setContentView only once in your ‘onCreate’ method, in general for the main window (one Activity = 1 view)

in your case you should probably change your Background..