Question

I am Developing an app for(honeycomb)tablet , want a full screen view.how to hide the bar in which containing back button ??

Answer 1

There seems to be no way of hiding it completely unless you have a rooted device.
See answer from Romain Guy here: Is there a way to hide the system bar in Android 3.0? It's an internal device and I'm managing navigation

However, you can dim it. Making them sort of invisible, instead you see the dots. Using LIGHTS_OUT

  View v = findViewById(R.id.view_id);
  v.setSystemUiVisibility(View.STATUS_BAR_HIDDEN); 

Reference, answer here: Hiding Systembar in android 3.0(honeycomb)

Or in other words, search for hide system bar android.