反应本土嵌套导航 - 回去堆导航仪的初始路径被点击父抽屉路由时

Question

我使用下面的导航设置在我的反应本地项目。在这里我使用抽屉导航和堆栈导航。

import MainScreen from '../components/MainScreen';
import SettingsScreen from '../components/SettingsScreen';
import FriendsListScreen from '../components/FriendsListScreen';
import FriendProfileScreen from '../components/FriendProfileScreen';

// stack navigator - 1
const MainScreenStack = createStackNavigator(
    {
        MainScreen: MainScreen,
        FriendsListScreen: FriendsListScreen,
        FriendProfileScreen: FriendProfileScreen,
    },
    {
        initialRouteName: 'MainScreen',
        navigationOptions: {
            drawerLabel: "Home"
        },
    }
);

// stack navigator - 2
const SettingsScreenStack = createStackNavigator(
    {
        SettingsScreen: SettingsScreen
    },
    {
        navigationOptions: {
            drawerLabel: "Settings"
        },
    }
);

// drawer navigation (stack navigator 1 + 2)
const AppNavigator = DrawerNavigator({
  MainScreen: MainScreenStack,
  SettingsScreen: SettingsScreenStack
});

const AppContainer = createAppContainer(AppNavigator)

场景：

• 从抽屉中，我点击“主页”链接，导航到MainScreen。
• 从MainScreen，我点击一个按钮，导航到FriendsListScreen。
• 从FriendsListScreen，我再次打开抽屉，单击“主页”链接。抽屉关闭，没有导航发生。

小样：

有没有一种方法来导航回到MainScreen当我点击从抽屉中“家”的链接？

Answer 1

我得到了解决类似的问题通过如下创建自定义的抽屉内容：

import {DrawerItems, SafeAreaView, createStackNavigator, createDrawerNavigator, createAppContainer} from "react-navigation";

const DrawerContent = (props) => (
  <ScrollView>
    <SafeAreaView forceInset={{top: 'always', horizontal: 'never'}}>
      <DrawerItems {...props} onItemPress={ ({route, focused}) => {
        if (route.key === "MainScreen") {
          if (route.routes.length === 1) {
            props.navigation.closeDrawer();
          } else {
            props.navigation.navigate(route.routes[0].routeName);
          }
        } else {
          props.onItemPress({route, focused});
        }
      }} />
    </SafeAreaView>
  </ScrollView>
);

const AppNavigator = DrawerNavigator({
  MainScreen: MainScreenStack,
  SettingsScreen: SettingsScreenStack
}, {contentComponent: DrawerContent});