title: React Native Open Drawer with Button
body: <p>I have a Drawer Navigator with some Screens. One of the Screens is a TabNavigator. Now I want to implement a HamburgerMenu-Button to open the drawer in all of the Tab-Navigator Screens.</p>
  <p>Where do I implement that Button? In the TabNavigator or its child Screens or in the Drawer Screens?</p>
  <p>Here are a few Code Snippets:</p>
  <p>DrawerNavigator:</p>
  <pre><code>export default class DrawerMenu extends React.Component {
   render() {
    return (
     &lt;Drawer.Navigator initialRouteName='Home'&gt;
      &lt;Drawer.Screen name='Home' component={TabNavigator} /&gt;
      &lt;Drawer.Screen name='About Us' component={AboutUsScreen} /&gt;
      &lt;Drawer.Screen name='About the App' component={AboutTheAppScreen} /&gt;
      &lt;Drawer.Screen name='Impressum' component={ImpressumScreen} /&gt;
     &lt;/Drawer.Navigator&gt;
    );
   }
  }
  </code></pre>
  <p>TabNavigator:</p>
  <pre><code>const Tab = createBottomTabNavigator();
  const TabNavigator = () =&gt; {
   return (
    &lt;Tab.Navigator tabBar={(props) =&gt; &lt;TabBar {...props}&gt;&lt;/TabBar&gt;}&gt;
     &lt;Tab.Screen
      name='Tab1'
      component={Tab1}
      initialParams={{ icon: 'info' }}
     &gt;&lt;/Tab.Screen&gt;
     &lt;Tab.Screen
      name='Tab2'
      component={Tab2}
      initialParams={{ icon: 'circle-o-notch' }}
     &gt;&lt;/Tab.Screen&gt;
     &lt;Tab.Screen
      name='Tab3'
      component={Tab3}
      initialParams={{ icon: 'home' }}
     &gt;&lt;/Tab.Screen&gt;
     &lt;Tab.Screen
      name='Tab4'
      component={Tab4}
      initialParams={{ icon: 'glass' }}
     &gt;&lt;/Tab.Screen&gt;
     &lt;Tab.Screen
      name='Tab5'
      component={Tab5}
      initialParams={{ icon: 'road' }}
     &gt;&lt;/Tab.Screen&gt;
    &lt;/Tab.Navigator&gt;
   );
  };
  </code></pre>
  <p>single Screen in TabNavigator:</p>
  <pre><code>const Tab1 = () =&gt; {
      return (
          &lt;View style={styles.container}&gt;
              &lt;Text style={styles.text}&gt;Tab1&lt;/Text&gt;
          &lt;/View&gt;
      );
  };
  </code></pre>
  <p>Any help is appreciated.</p>