如何在导航架构中导航抽屉标题操作的任何目的地

Question

Anyone please explain, How to define the action in Navigation architecture for header layout of drawer.

Now, I need to set click of header of drawer and I set it to like this:

headerOfNavDrawer.setOnClickListener{
    //Here I want to navigate to editProfileFragment
    //But For navigation I need an action in nav arch graph.
    //Where to put action??
}

Answer 1

You have two things you need:

1. A reference to the NavController .

As per the Navigate to a destination documentation , you can use findNavController(R.id.your_nav_host_fragment) where R.id.nav_host_fragment is the android:id you put on your NavHostFragment in your Activity's layout.

2. An action to go to the edit profile fragment.

For this, Navigation allows you to set up global actions - an action that is available from every destination in your graph. This is the correct way of triggering actions from UI provided by your activity.

<navigation xmlns:app="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/main_nav"
        app:startDestination="@id/mainFragment">

  ...

  <action android:id="@+id/action_global_editProfileFragment"
      app:destination="@id/editProfileFragment"/>

</navigation>

When using Safe Args with a global action , this will generate a MainNavDirections class that has your action on it.

This means your completed click listener would look like:

headerOfNavDrawer.setOnClickListener{
    // Use the Kotlin extension in the -ktx artifacts
    val navController = findNavController(R.id.nav_host_fragment)

    // Now use the generated Directions class to navigate to the destination
    navController.navigate(MainNavDirections.actionGlobalEditProfileFragment())
}