当您从另一个选项卡返回选项卡时如何重置选项卡堆栈反应导航v5

Question

我有 3 个选项卡，每个选项卡都包含一组堆栈导航器。

1. 主堆栈

    const HomeNavigator = createStackNavigator();

    const HomeStackNavigator = ({navigation, route}) => {
      return (
        <HomeNavigator.Navigator>
          <HomeNavigator.Screen
            name="Home"
            component={Home}
          />
          <HomeNavigator.Screen
            name="Profile"
            component={Profile}
          />
          <HomeNavigator.Screen
            name="Settings"
            component={Settings}
          />
        </HomeNavigator.Navigator>
      );
    };

2. 存储堆栈

    const StoreNavigator = createStackNavigator();

    const StoreStackNavigator = ({navigation, route}) => {
      return (
        <StoreNavigator.Navigator>
          <StoreNavigator.Screen
            name="OurStore"
            component={Store}
          />
        </StoreNavigator.Navigator>
      );
    };

3. 社区堆栈

    const CommunityNavigator = createStackNavigator();

    const CommunityStackNavigator = ({navigation, route}) => {
      return (
        <CommunityNavigator.Navigator>
          <CommunityNavigator.Screen
            name="Community"
            component={Community}
          />
          <CommunityNavigator.Screen
            name="CommunityReply"
            component={CommunityReply}
            options={communityReplyOptions}
          />
          <CommunityNavigator.Screen
            name="AskCommunity"
            component={AskCommunity}
          />
        </CommunityNavigator.Navigator>
      );
    };

选项卡导航器

    const MainNavigator = createBottomTabNavigator();

    const MainTabNavigator = () => {
      return (
        <MainNavigator.Navigator
          screenOptions={tabScreenOptions}
          tabBarOptions={tabBarOptions}>
          <MainNavigator.Screen
            name="HomeTab"
            component={HomeStackNavigator}
            options={{tabBarLabel: 'Home'}}
          />
          <MainNavigator.Screen
            name="StoreTab"
            component={StoreStackNavigator}
            options={{tabBarLabel: 'Store'}}
          />
          <MainNavigator.Screen
            name="CommunityTab"
            component={CommunityStackNavigator}
            options={{tabBarLabel: 'Community'}}
          />
        </MainNavigator.Navigator>
      );
    };

我通过使用以下方法单击按钮导航到 HomeTab 中 CommunityTab 选项卡内的 CommunityReply 屏幕

props.navigation.navigate('CommunityTab', { screen: 'CommunityReply', params: {postId: postId}, });

它工作正常，当我再次返回 CommunityTab 时，它将始终位于 CommunityReply 屏幕中。返回 CommunityTab 选项卡时如何重置选项卡堆栈

React 导航版本

“@react-navigation/bottom-tabs”：“^5.8.0”

“@react-navigation/native”：“^5.7.3”

“@react-navigation/stack”：“^5.9.0”

Answer 1

有一个名为 unmountOnBlur 的属性就是为此目的而设计的。

https://reactnavigation.org/docs/bottom-tab-navigator#unmountonblur

在选项卡导航器中进行的更改：

const MainNavigator = createBottomTabNavigator();

const MainTabNavigator = () => {
  return (
    <MainNavigator.Navigator
-     screenOptions={tabScreenOptions}
+     screenOptions={{...tabScreenOptions, unmountOnBlur: true }}
      tabBarOptions={tabBarOptions}>
      <MainNavigator.Screen
        name="HomeTab"
        component={HomeStackNavigator}
        options={{tabBarLabel: 'Home'}}
      />
      <MainNavigator.Screen
        name="StoreTab"
        component={StoreStackNavigator}
        options={{tabBarLabel: 'Store'}}
      />
      <MainNavigator.Screen
        name="CommunityTab"
        component={CommunityStackNavigator}
        options={{tabBarLabel: 'Community'}}
      />
    </MainNavigator.Navigator>
  );
};

摘要：
unmountOnBlur: true将解决提到的问题。

Answer 2

如果您不希望CommunityReply在导航回 时显示屏幕，则CommunityTab需要在函数initial中添加一个选项navigate。

props.navigation.navigate(
  'CommunityTab', 
  { 
    screen: 'CommunityReply', 
    initial: false, 
    params: { postId: postId }, 
  }
);

文档中对此进行了解释