title: React Native Android - How to set the logo icon in ToolBarAndroid?
body: <p>I've copied a code for an AndroidToolBar from React Native's UIExplorer:  </p>
  
  <pre><code>&lt;ToolbarAndroid
              logo={require('image!launcher_icon')}
              navIcon={require('image!ic_menu_black_24dp')}
              onIconClicked={() =&gt; this.drawer.openDrawer()}
              style={styles.toolbar}
              title={title}
            /&gt;
  </code></pre>
  
  <p>But it seems like the <strong>image!launcher_icon</strong> and <strong>image!ic_menu_black_24d</strong>p are missing. I am getting a missing error:<br>
  <a href="https://i.stack.imgur.com/D5Xge.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/D5Xge.png" alt="enter image description here"></a></p>
  
  <p>It seems like some a system's baked-in  icon. </p>
  
  <ol>
  <li>How can I use this icon?</li>
  <li>How can I use my own png file?</li>
  </ol>