title: How to get system Android emoji drawable by unicode character?
body: <p>I want to implement an android emoji keyboard just using emoji unicode array, without any extra res.</p>
  
  <p>So for the emoji unicode character, I need to get the drawable from android system, if the system doesn't support the charactor, I just ignore this character.</p>
  
  <p>After some basic research, </p>
  
  <ul>
  <li>emojicon, <code>https://github.com/rockerhieu/emojicon</code></li>
  <li>emojicon, <code>https://github.com/ankushsachdeva/emojicon</code></li>
  </ul>
  
  <p>These implements all use self made resources.</p>
  
  <p>use TextView <code>setText</code>, <code>tv.setText("\u263A");</code> TextView can show the resource, but how can I get the resource?</p>