title: Need help in android app to select a part of image
body: <p>Your application will then display an image on the screen.</p>
  
  <p>A small resizable rectangular box is also displayed on the screen which the user can drag using touch. This would allow user to select any rectangular portion of the image.</p>
  
  <p>How do I accomplish this. I have no idea how to proceed. How do make a <code>rectangular box</code>, drag it using touch and then select the that <code>portion of image</code>?</p>