title: Android difference between Two Dates
body: <p>I have two date like:</p>
  
  <pre><code>String date_1="yyyyMMddHHmmss";
  String date_2="yyyyMMddHHmmss";
  </code></pre>
  
  <p>I want to print the difference like:</p>
  
  <pre><code>2d 3h 45m
  </code></pre>
  
  <p>How can I do that? Thanks!</p>