title: android error: Can't create handler inside thread that has not called Looper.prepare()
body: <p>I have an error from users of the android Market.
  I have no idea when this error occurs .
  The simulator and test phone runs the app perfectly!
  Any1 any idea where to begin looking?
  Thanks !</p>
  
  <p>this is the error: </p>
  
  <blockquote>
    <p>java.lang.RuntimeException: Can't
    create handler inside thread that has
    not called Looper.prepare() at
    android.os.Handler.(Handler.java:121)
    at
    android.view.ViewRoot.(ViewRoot.java:259)
    at
    android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
    at
    android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
    at
    android.view.Window$LocalWindowManager.addView(Window.java:430)
    at
    android.app.Dialog.show(Dialog.java:288)
    at
    be.test.testerd$1.run(testscreen.java:103)</p>
  </blockquote>