React Native: panresponder native event identifier undefined
<p>I have a view</p>

<pre><code>&lt;View style={styles.container} id={'time2'}&gt;
  &lt;Text&gt;hello&lt;/Text&gt;
&lt;/View&gt;
</code></pre>

<p>and onComponentWillMount, I have a pan handler (inside PanResponder.create)</p>

<pre><code>onPanResponderGrant: (evt, gestureState) =&gt; {
  console.log('identifier', evt.identifier);
}
</code></pre>

<p>but when I press the view, the identifier gets printed out as undefined.  Target is also undefined.  How do I get the id of my view to print out?</p>