📚 05-Fragment 与导航

5.1 Fragment 使用

class HomeFragment: Fragment(R.layout.fragment_home) {
    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)
    }
}

5.2 Navigation Component

<!-- nav_graph.xml -->
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    app:startDestination="@id/homeFragment">
    <fragment
        android:id="@+id/homeFragment"
        android:name="com.example.HomeFragment"/>
    <fragment
        android:id="@+id/detailFragment"
        android:name="com.example.DetailFragment"/>
</navigation>

5.3 Safe Args 传参

val action = HomeFragmentDirections.actionHomeToDetail(itemId = 123)
findNavController().navigate(action)