title: creating a horizontal line over a textview in android
body: <p>i am making a math tutor for school kids... In it's Subtraction lesson, I want to make a horizontal line over a textview while taking a borrow from a number.
  Look at the image below. The line created on Textview.How it can be done programaticaly.. <a href="https://i.stack.imgur.com/KUr2O.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/KUr2O.jpg" alt="just like this"></a>.</p>