如何在 React 导航 (3.x) 中为全屏模态提供透明背景？

Question

如何在反应导航中为全屏模式提供透明背景（3.x）。给出的解决方案在新版本的反应导航中不起作用。我想要在另一个屏幕上显示的新全屏模式中使用透明颜色。

  const MainNavigator = createStackNavigator(
  {
    BrowserHome: { screen: BrowserHome },
    ImageDetailModal: {
      screen: ImageDetail,
      navigationOptions: {
        header: null
      }
    }
  },
  {
    mode: "modal",
    cardStyle: {
      backgroundColor: "transparent",
      opacity: 1
    }
  }
);

const AppContainer = createAppContainer(MainNavigator);

export default AppContainer;

虽然我在 'BrowserHome' 组件上显示的图像细节组件是：

export default class ImageDetail extends React.Component {
  render() {
    const modalColor = this.props.navigation.getParam("modalColor");
    return (
      <View
        style={{ flex: 1, flexDirection: "column", justifyContent: "flex-end" }}
      >
        <View
          style={{
            height: "50%",
            width: "100%",
            backgroundColor: "red",
            justifyContent: "center"
          }}
        >
          <Text>Testing a modal with transparent background</Text>
        </View>
      </View>
    );
  }
}

Answer 1

您现在可以删除 cardStyle 对象并改为设置 transparentCard: true :

const MainNavigator = createStackNavigator(
  {
    BrowserHome: { screen: BrowserHome },
    ImageDetailModal: {
      screen: ImageDetail,
      navigationOptions: {
        header: null
      }
    }
  },
  {
    mode: "modal",
    transparentCard: true
  })

https://reactnavigation.org/docs/en/stack-navigator.html#stacknavigatorconfig

Answer 2

在 createStackNavigator

中添加行 transparentCard: true 和 cardStyle: {opacity: 1}

const MainStack = createStackNavigator({
  Tabs: TabNavigator,
  Modal: ModalScreen, 
},{
  headerMode: 'none',
  mode: 'modal',
  transparentCard: true,
  cardStyle: { opacity: 1 }
});

Answer 3

React 导航 5 倍

如果您更新到 React Navigation 版本 5x，这里有一个更新。

代码示例

<Stack.Navigator
  screenOptions={{
    headerShown: false,
    cardStyle: { backgroundColor: 'transparent' },
    cardOverlayEnabled: true,
    cardStyleInterpolator: ({ current: { progress } }) => ({
      cardStyle: {
        opacity: progress.interpolate({
          inputRange: [0, 0.5, 0.9, 1],
          outputRange: [0, 0.25, 0.7, 1],
        }),
      },
      overlayStyle: {
        opacity: progress.interpolate({
          inputRange: [0, 1],
          outputRange: [0, 0.5],
          extrapolate: 'clamp',
        }),
      },
    }),
  }}
  mode="modal"
>
  <Stack.Screen name="Home" component={HomeStack} />
  <Stack.Screen name="Modal" component={ModalScreen} />
</Stack.Navigator>

这里的属性 cardOverlayEnabled 和 headerShown 是 optionals。这将取决于您要实现的目标。

Answer 4

React 导航 6x

将 screenOptions.presentation 设置为“transparentModal”。

如何在 React 导航 (3.x) 中为全屏模态提供透明背景？

How to give a transparent background to a fullScreen modal in react navigation (3.x)?

react-native

react-navigation

react-navigation-stack

React 导航 5 倍

React 导航 6x