React Navigation modal height

问题:

How do I set the height a React Navigation modal view so once it has appeared it will only cover about half of the screen from the bottom up, and the view below remains visible?

Update: I'm trying to create a ux flow similar to the App Store purchase modal, where some kind of StackNavigator is nested in a modal that fills the bottom half of the screen.

回答1:

In your stacknavigator you can set these options:

  mode: 'modal',
    headerMode: 'none',
    cardStyle:{
      backgroundColor:"transparent",
      opacity:0.99
  }

And in your modal screen:

class ModalScreen extends React.Component {

  render() {
    return (
      <View style={{ flex: 1 ,flexDirection: 'column', justifyContent: 'flex-end'}}>
          <View style={{ height: "50%" ,width: '100%', backgroundColor:"#fff", justifyContent:"center"}}>
            <Text>Testing a modal with transparent background</Text>
          </View>
      </View>
    );
  }
}

Also you can refer to this expo snack https://snack.expo.io/@yannerio/modal that I've created to show how it works, or you could use React Native Modal