navigation-api-overhaul

App.js

class HomeScreen extends React.Component {
  static navigationOptions = { tabBarLabel: 'Home!' };
  ...
}

class DetailScreen extends React.Component {
  static navigationOptions = { tabBarLabel: 'Detail!' };
  ...
}

class SettingsScreen extends React.Component {
  ...
}

const HomeStack = createStackNavigator({ Home: HomeScreen });
const MainTab = createBottomTabNavigator({ HomeStack, Detail: DetailScreen });
const AppNavigator = createDrawerNavigator({ MainTab, Settings: SettingsScreen })

export default class App extends React.Component {
  render() {
    return <AppNavigator />;
  }
}