android - 以编程方式设置 NavGraph

Question

在我的 Activity 布局中，我有以下 NavHostFragment:

<fragment
            android:id="@+id/my_nav_host_fragment"
            android:layout_height="match_parent"
            android:layout_width="match_parent"
            android:name="androidx.navigation.fragment.NavHostFragment"
            app:defaultNavHost="true"
            app:navGraph="@navigation/my_nav_graph" />

我的问题是如何以编程方式设置 navGraph？如何在 NavHostFragment 实例中转换 my_nav_host_fragment View 实例？

Answer 1

我找到了一个解决方案:

//Setup the navGraph for this activity
val myNavHostFragment: NavHostFragment = my_nav_host_fragment as NavHostFragment
val inflater = myNavHostFragment.navController.navInflater
val graph = inflater.inflate(R.navigation.my_nav_graph)
myNavHostFragment.navController.graph = graph

基于:Navigation Architecture Component- Passing argument data to the startDestination