TypeError: undefined is not an object (evaluating 'this.styles.topContainer') (#1716)

* fix typo react-native-gesutre-handler -> react-native-gesture-handler

* generateStyles is not called yet

so it caused npe `this.styles.topContainer` on line 112.

Author: galihlprakoso

src/components/connectionStatusBar/index.tsx

@@ -35,6 +35,9 @@ class ConnectionStatusBar extends PureComponent<ConnectionStatusBarProps, Connec
 
   constructor(props: ConnectionStatusBarProps) {
     super(props);
+    
+    this.generateStyles();
+    
     this.onConnectionChange = this.onConnectionChange.bind(this);
 
     this.state = {