如何访问routeConfig中的redux存储（反应导航）

Question

这是代码示例：

const mapStateToProps = (state: RootState) => ({
  isSwipeEnabled: state.permissions.isSwipeEnabled,
});

const MainNavigator = createMaterialTopTabNavigator(
  {
    Screen1,
    Screen2: {
      screen: Screen2,
      navigationOptions: {
        swipeEnabled: isSwipeEnabled, <==HERE I WANT TO USE MY REDUX STATE
      },
    },
  },
  {
    initialRouteName: 'Screen1',
    tabBarPosition: 'bottom',
  },
);

export default connect(mapStateToProps)(MainNavigator);

是否可以在createMaterialTopTabNavigator函数中访问redux？如果是，怎么办？

谢谢！

Answer 1

您可以在连接到Redux的App组件的构造函数中创建导航器。在构造函数中，您可以从props访问映射状态：

const mapStateToProps = (state: RootState) => ({
    isSwipeEnabled: state.permissions.isSwipeEnabled
});

class NavigationApp extends React.Component {
    constructor(props) {
        super(props);

        this.mainNavigator = createMaterialTopTabNavigator(
            {
                Screen1,
                Screen2: {
                    screen: Screen2,
                    navigationOptions: {
                        // here you now can use your mapped redux state from props
                        swipeEnabled: props.isSwipeEnabled, 
                    }
                }
            },
            {
                initialRouteName: 'Screen1',
                tabBarPosition: 'bottom'
            },
        );
    }

    render() {
        const App = createBrowserApp(this.mainNavigator);
        return (<App />);
    }
}

export default connect(mapStateToProps)(NavigationApp);