反应导航模态高度

Question

如何设置 React Navigation 模态视图的高度，使其出现后自下而上仅覆盖大约一半的屏幕，而下方的视图仍然可见？

更新： 我正在尝试创建一个类似于 App Store 购买模式的用户体验流程，其中某种 StackNavigator 嵌套在填充下半部分的模式中屏幕。

Answer 1

在您的堆栈导航器中，您可以设置这些选项：

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

并且在您的模态屏幕中：

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>
    );
  }
}

也可以参考一下这个世博小吃https://snack.expo.io/@yannerio/modal that I've created to show how it works, or you could use React Native Modal

Answer 2

对于 react-navigation v3.x 你可以使用 prop transparentCard: true，你可以在这里看到更多细节：

Answer 3

下面是如何在 react-navigation v3.x 中实现此目的的示例：

应用容器

const TestRootStack = createStackNavigator(
  {
    TestRoot: TestRootScreen,
    TestModal: {
      screen: TestModalScreen,
      navigationOptions: {
        /**
         * Distance from top to register swipe to dismiss modal gesture. Default (135)
         * https://reactnavigation.org/docs/en/stack-navigator.html#gestureresponsedistance
         */
        gestureResponseDistance: { vertical: 1000 }, // default is 135 },
      },
    },
  },
  {
    headerMode: 'none',
    mode: 'modal',
    transparentCard: true,
  },
);

const AppContainer = createAppContainer(TestRootStack);

根屏幕

class TestRootScreen extends React.Component {
  render() {
    return (
      <SafeAreaView style={styles.container}>
        <Button title="Show Modal" onPress={() => this.props.navigation.navigate('TestModal')} />
      </SafeAreaView>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: 'blue',
    alignItems: 'center',
    justifyContent: 'center',
  },
});

模态屏幕

class TestModalScreen extends React.Component {
  render() {
    return (
      <SafeAreaView style={styles.container}>
        <View style={styles.innerContainer} />
      </SafeAreaView>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    backgroundColor: 'transparent',
    justifyContent: 'flex-end',
  },
  innerContainer: {
    position: 'absolute',
    bottom: 0,
    left: 0,
    right: 0,
    top: 100,
    backgroundColor: 'red',
  },
});

Answer 4

如果你想使用react native Modal你可以让父视图透明并在底部添加一个视图

<Modal
      animationType="slide"
      transparent={true}
      visible={props.visible}
    >
     <View
          style={{
             backgroundColor:'transparent',
             flex:1,
             justifyContent:'flex-end'
                 }}>
          <View
               style={{
                   backgroundColor:'green',
                   height:'20%'
                 }}>
               <Text>Hello World!</Text>
               <TouchableHighlight
                    onPress={props.closeModal}>
                     <Text>Hide Modal</Text>
               </TouchableHighlight>
          </View>
    </View>
 </Modal>

反应导航模态高度

React Navigation modal height

modal-dialog

react-native

react-navigation

应用容器

根屏幕

模态屏幕