title: only progress wheel in progress dialog
body: <p>I want to show a progress dialog when my activity is busy preparing something.</p>
  
  <p>The problem is i just want the progress wheel being shown NOT the dialog screen with it. </p>
  
  <p>Currently am showing a progress dialog with the black dialog on which the progress wheel spinning.</p>
  
  <p>Take the image as a reference.(bottom right corner).<img src="https://i.stack.imgur.com/tXZhI.png" alt="enter image description here"></p>