title: Android change setContentView
body: <p>I want to dynamically set the contentView in my activity.
  Because one time i use a xml as contentView, but at anothertime i use a custom view as contentView.</p>
  
  <p>But how do i change the contentView?</p>
  
  <p>I read about that the ViewFlipper can do this, but a viewFlipper is implemented in a xml file. And within this ViewFlipper you can add your different views.</p>
  
  <p>But i dont know them at the beginning, so i cant write them all in my xml file.
  Do you have any idea?</p>
  
  <p>Thank you</p>