Add switch example

examples/NavigationPlayground/js/App.js

@@ -32,6 +32,7 @@ import SimpleStack from './SimpleStack';
 import StackWithHeaderPreset from './StackWithHeaderPreset';
 import StackWithTranslucentHeader from './StackWithTranslucentHeader';
 import SimpleTabs from './SimpleTabs';
+import SwitchWithStacks from './SwitchWithStacks';
 import TabsWithNavigationFocus from './TabsWithNavigationFocus';
 
 const ExampleInfo = {
@@ -39,6 +40,10 @@ const ExampleInfo = {
     name: 'Stack Example',
     description: 'A card stack',
   },
+  SwitchWithStacks: {
+    name: 'Switch between routes',
+    description: 'Jump between routes',
+  },
   StackWithCustomHeaderBackImage: {
     name: 'Custom header back image',
     description: 'Stack with custom header back image',
@@ -112,7 +117,8 @@ const ExampleInfo = {
 };
 
 const ExampleRoutes = {
-  SimpleStack: SimpleStack,
+  SimpleStack,
+  SwitchWithStacks,
   SimpleTabs: SimpleTabs,
   Drawer: Drawer,
   // MultipleDrawer: {

examples/NavigationPlayground/js/SwitchWithStacks.js

@@ -33,7 +33,7 @@ class SignInScreen extends React.Component<any, any> {
 
   _signInAsync = async () => {
     await AsyncStorage.setItem('userToken', 'abc');
-    this.props.navigation.navigate('App');
+    this.props.navigation.navigate('Home');
   };
 }