I am trying to validate a users email, by checking it against an expression. But the result i am getting is invalid for all the entries.   UPDATED CODE  class dummytest extends Component{    constructor(props){     super(props);     this.state = {...

I have a React Native View containing a Text field, and I'm using the onLayout prop to do some positional calculations which rely on the data it provides.    <View onLayout={this.calculateDimensions}>   <Text>{this.props.content}</...

So I've been follow this tutorial and adapting for what I need.  I've checked the other answer but can't quite make out what I'm missing?  For the search engines, the error is: undefined is not an object, router, getStateForAction...

Expected Behavior  App to load as it does on android.  Actual Behavior  Error: babelHelpers.asyncToGenerator is not a function    Environment:  OS: macOS Sierra 10.12.1 Node: 7.9.0 Yarn: 0.20.3 npm: 4.2.0 Watchman: 4.9.0 Xcode: Xcode 8.3.3 Build vers...

As far as I know, push notification can be used in react native, even when the app is closed. would it be possible to use push notification to run a background task in react native?  for example, when a push notification is sent to a device, it runs...

I've just encountered a weird issue that I didn't know why it was happening. For some reason, I can't scroll to the bottom of my <ScrollView>.  Here's my code: https://repl.it/Iqcx/0  Thanks!...

I am trying to do as following in react-native.  I am setting a borderRadius in the parent view. But the child is overriding that. So in the final view, the borderRadius is not visible     export default class FlexDimensionsBasics extends Component {...

I'm trying to create an interface where cards are presented one at a time to the user. The user can scroll left and right in a paged fashion. I also want to view a small amount of the card to the left and the right of the current card, as a hint...

I was originally using this function to resize and then upload an image in an earlier version of Expo and it worked fine:  uploadImage = async (originalUri) => {     const { dispatchAvatar } = this.props;     const { uri } = await reduceImageAsync...

I have upgrade my project from react-native 0.57.8 to 0.59.3. Follewed theses changes https://github.com/react-native-community/rn-diff-purge/compare/version/0.57.8...version/0.59.3 The problem is - when I try to run project on IOS simulator I have...