must configur routename react-native code example
Example: react native routes
import { createSwitchNavigator } from 'react-navigation';// create switch navigation with authentication flow and main appconst SwitchNavigator = createSwitchNavigator( { Login: AuthNavigator, App: AppNavigator }, { initialRouteName: 'Login' });const App = () => ( <SwitchNavigator />);export default App;