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我有一个标签栏，我想制作它，以便在按下其中一个标签时，它将屏幕推送到堆栈上（覆盖标签栏）。它基本上是 StackNavigator 和 BottomTabNavigator 的组合。我试过这个，但它给了我一个错误，说“导航”是未定义的。

应用程序.js

const AppContainer = createStackNavigator(
  {
    SnapTalk: Tabs,
    Post: {
      screen: PostScreen
    }
  },
  {
    mode: "modal",
    headerMode: "none",
    initialRouteName: "Post"
  }const AppContainer = createStackNavigator(
  {
    SnapTalk: Tabs,
    Post: {
      screen: PostScreen
    }
  },
  {
    mode: "modal",
    headerMode: "none",
    initialRouteName: "Post"
  }

导航栏.js

         <AppTabs.Screen 
            name="Post"
            component = {PostScreen} 
            options={{
                tabBarIcon: ({ color, size}) => (
                    <Icon name="ios-add-circle-outline" size={30} color= {color} />
                )
            }} 
             listeners={{
               tabPress: 
                 navigation.navigate("Post")
            }}
        >
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