final Handler handler = new Handler();Runnable runnable = new Runnable() { public void run() { int duration = mVideoView.getCurrentPosition(); if(mVideoView.isPlaying()){ if (old_duration == duration) { mProgressBar.setVisibility(View.VISIBLE); } else { mProgressBar.setVisibility(View.GONE); } } old_duration = duration; handler.postDelayed(runnable, 500); }};

handler.postDelayed(runnable, 0);