Question

我使用一个活动和多个片段在项目中进行导航，但是当添加动画时，它仅对没有工具栏的片段有效。

// MainActivity
class MainActivity : AppCompatActivity() {

    private lateinit var binding: ActivityMainBinding
    private lateinit var navController: NavController
    private lateinit var appBarConfiguration: AppBarConfiguration
    private lateinit var drawerLayout: DrawerLayout

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = DataBindingUtil.setContentView(this, R.layout.activity_main)
        drawerLayout = binding.drawerLayout
        navController = this.findNavController(R.id.myNavHostFragment)

        appBarConfiguration = AppBarConfiguration(
            setOf(R.id.firstFragment, R.id.secondFragment), drawerLayout
        )
        NavigationUI.setupActionBarWithNavController(
            this, navController, appBarConfiguration
        )
        NavigationUI.setupWithNavController(binding.navView, navController)
    }

    override fun onSupportNavigateUp(): Boolean {
        return NavigationUI.navigateUp(navController, appBarConfiguration)
    }
}


// activity_main.xml
<layout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools">

    <androidx.drawerlayout.widget.DrawerLayout
        android:id="@+id/drawerLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <androidx.constraintlayout.widget.ConstraintLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            tools:context=".MainActivity">

            <fragment
                android:id="@+id/myNavHostFragment"
                android:name="androidx.navigation.fragment.NavHostFragment"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                app:defaultNavHost="true"
                app:navGraph="@navigation/navigation"
                tools:layout_editor_absoluteY="1dp" />

        </androidx.constraintlayout.widget.ConstraintLayout>

        <com.google.android.material.navigation.NavigationView
            android:id="@+id/navView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="start"
            app:headerLayout="@layout/drawer_header"
            app:menu="@menu/drawer_menu" />

    </androidx.drawerlayout.widget.DrawerLayout>
</layout>


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

    <fragment
        android:id="@+id/firstFragment"
        android:name="com.example.project.FirstFragment"
        android:label="FirstFragment" >
        <action
            android:id="@+id/action_firstFragment_to_secondFragment"
            app:destination="@id/secondFragment"
            app:enterAnim="@anim/slide_in_right"
            app:exitAnim="@anim/slide_out_left"
            app:popEnterAnim="@anim/slide_in_left"
            app:popExitAnim="@anim/slide_out_left" />
    </fragment>
    <fragment
        android:id="@+id/secondFragment"
        android:name="com.example.project.SecondFragment"
        android:label="fragment_second"
        tools:layout="@layout/fragment_second" />
</navigation>

Answer 1

这是因为firstFragment和secondFragment使用相同的活动工具栏。因此，如果要将这两个片段的工具栏应用于动画，我将创建另一个带有firstFragment的secondActivity绑定动作，并使用secondFragment作为开始目标，这将为secondFragment创建另一个工具栏，然后执行我想要的操作。

将导航动画应用于工具栏

1 个答案: