react-native-backdrop

React Native Backdrop

React Native Backdrop component built with material guidelines for android and ios

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Installation

$ npm install react-native-backdrop --save

Usage

import { Backdrop } from "react-native-backdrop";

const App = () => {
  const [visible, setVisible] = useState(false);
  
  const handleOpen = () => {
    setVisible(true);
  };
  
  const handleClose = () => {
    setVisible(false);
  };

  return (
    <Fragment>
      <View style={{flex: 1, justifyContent: 'center', alignItems: 'center'}}>
        <TouchableOpacity
          onPress={() => setVisible(true)}
          style={{
            width: 200,
            height: 40,
            justifyContent: 'center',
            alignItems: 'center',
            elevation: 1,
            backgroundColor: '#fff',
          }}>
          <Text>Handle Backdrop</Text>
        </TouchableOpacity>
      </View>
      <Backdrop
        visible={visible}
        handleOpen={handleOpen}
        handleClose={handleClose}
        onClose={() => {}}
        swipeConfig={{
          velocityThreshold: 0.3,
          directionalOffsetThreshold: 80,
        }}
        animationConfig={{
          speed: 14,
          bounciness: 4,
        }}
        overlayColor="rgba(0,0,0,0.32)"
        backdropStyle={{
          backgroundColor: '#fff',
        }}>
        <View>
          <Text>Backdrop Content</Text>
        </View>
      </Backdrop>
    );
}

Backdrop Properties

Prop	Description	Default
children	Content of backdrop (required)
visible	Whether the backdrop is visible (required, boolean)	false
handleOpen	Function to open backdrop (required, function)	() => {}
handleClose	Function to close backdrop (required, function)	() => {}
beforeClose	Callback that is called before close animation	() => {}
afterClose	Callback that is called after close animation	() => {}
beforeOpen	Callback that is called before open animation	() => {}
afterOpen	Callback that is called after open animation	() => {}
animationConfig	Configures Open and Close Animation speed and bounciness	{speed: 14, bounciness: 4}
swipeConfig	Configures Swipe Gesture to close backdrop	{velocityThreshold: 0.3, directionalOffsetThreshold: 80}
backdropStyle	Style object for backdrop styling	{}
containerStyle	Style object for container styling	{ backgroundColor: "#fff" }
overlayColor	Color of backdrop overlay	rgba(0, 0, 0, 0.32)
header	Display custom header in backdrop	() => (<View style={styles.closePlateContainer}><View style={styles.closePlate} /></View>)
closedHeight	Height of closed backdrop that will be visible and touchable	0
closeOnBackButton	Close backdrop on back button press on android	false

velocityThreshold - Velocity that has to be breached in order for swipe to be triggered (vx and vy properties of gestureState) directionalOffsetThreshold - Absolute offset that shouldn't be breached for swipe to be triggered (dy for horizontal swipe, dx for vertical swipe)

License

MIT License. © Alexander Bogdanov 2019-