title: How to let a user add and remove items to a ListView?
body: <p>I am trying to make it so that when a user clicks a button, it pops up a <code>dialog</code> with an <code>EditText</code> and an <em>OK</em> <code>Button</code>. When the user completes, the dialog, it should <em>add</em> the item they just typed in to the <code>ListView</code>. How do I do this?</p>
  
  <p>I will need a large code example; this is my first application.</p>