You can use the __DEV__ global variable in JavaScript to determine if you’re using React Native packager or not. If you are running your app in the iOS Simulator or Android emulator __DEV__ will be set to true. https://reactnative.dev/docs/javascript-environment
Try this: import React, { Component, PropTypes } from “react”; import { Image } from “react-native”; export default class ScaledImage extends Component { constructor(props) { super(props); this.state = { source: { uri: this.props.uri } }; } componentWillMount() { Image.getSize(this.props.uri, (width, height) => { if (this.props.width && !this.props.height) { this.setState({ width: this.props.width, height: height * (this.props.width … Read more
You can pass a callback function as parameter when you call navigate like this: const DEMO_TOKEN = await AsyncStorage.getItem(‘id_token’); if (DEMO_TOKEN === null) { this.props.navigation.navigate(‘Login’, { onGoBack: () => this.refresh(), }); return -3; } else { this.doSomething(); } And define your callback function: refresh() { this.doSomething(); } Then in the login/registration view, before goBack, you … Read more
Add the following style to the “floating” view: position: ‘absolute’ You may also need to add a top and left value for positioning.
The global scope in React Native is variable global. Such as global.foo = foo, then you can use global.foo anywhere. But do not abuse it! In my opinion, global scope may used to store the global config or something like that. Share variables between different views, as your description, you can choose many other solutions(use … Read more
for your case use flex: 1/2 therefore: Your item should have flex of 1/(number of columns) if you have 3 columns your item should have flex:1/3
I had the same issue and it was resolved by simply adding following import statement in MainApplication.java: import com.facebook.react.BuildConfig;
I raised this question and answered myself as I thought it will help others who are facing similar issue. I struggled a lot to find out the real reason behind it as the error shown in terminal was not precise. To resolve the issue please upgrade the react-native package. Go to the Project root. Upgrade … Read more
In react-native, pointerEvents is a prop, not a style. <View pointerEvents=”none” />
You can change the name attribute in package.json, run react-native upgrade, and just let react overwrite the android/ios files. Don’t overwrite your index files if there is unsaved code, however. Then change your Appregistry line from AppRegistry.registerComponent(‘MyAppIOS’, () => MyAppIOS); To: AppRegistry.registerComponent(‘MyApp’, () => MyApp);