How to define entry point for react native app

if you are using Expo, you have to specify the entrypoint in your app.json file like this: { “expo”: { “entryPoint”: “./src/app/index.js” } } then, inside that file you need to register the app with Expo.registerRootComponent(YOUR_MAIN_APP_COMPONENT) import Expo from ‘expo’ … class App extends Component { … } export default Expo.registerRootComponent(App); this way you can … Read more

How to scroll to bottom of React Native ListView

As of React Native 0.41 both ListView and ScrollView have scrollToEnd() methods. ListView‘s is documented at https://facebook.github.io/react-native/docs/listview.html#scrolltoend You’ll need to use a ref to store a reference to your ListView when you render it: <ListView dataSource={yourDataSource} renderRow={yourRenderingCallback} ref={listView => { this.listView = listView; }} </ListView> Then, you can just call this.listView.scrollToEnd() to scroll to the … Read more

const App: () => React$Node = () => {…}: what does it mean this instruction?

Its type definition from Flow, it means that constant App is of type function and it returns ReactNode. ReactNode is one of these types: ReactChild | ReactFragment | ReactPortal | boolean | null | undefined This means the function App can return, any valid JSX (in react native its anything from View, Text, .etc), ReactFragment, … Read more