The current navigation construct like the following:
Activity --> Fragment1 --> Fragment2
I want to change the start destination dynamic according to the flag like the following:
Activity --> Fragment1 --> Fragment2
|
-----> Fragment2
And the Fragment2 will not back to the Fragment1 when dynamic change the start destination to Fragment2,
The navigation is like the following
<?xml version="1.0" encoding="utf-8"?>
<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/nav_frag">
<fragment
android:id="@+id/fragment1"
android:name="bbin.mobile.ui.fragment1
android:label="fragment1"
tools:layout="@layout/layout_fragment1">
<action
android:id="@+id/action_fragment1_to_fragment2"
app:enterAnim="@anim/anim_right_in"
app:exitAnim="@anim/anim_left_out"
app:popUpTo="@anim/anim_right_out"
app:destination="@id/fragment2" />
</fragment>
<fragment
android:id="@+id/fragment2"
android:name="bbin.mobile.fragment2
android:label="fragment2"
tools:layout="@layout/layout_fragment2">
<action
android:id="@+id/action_fragment2_to_fragment1"
app:popUpTo="@+id/fragment1"
app:popUpToInclusive="true"
app:destination="@id/fragment1" />
</fragment>
</navigation>
And the layout of activity is like the following:
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context=".MainActivity">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<fragment
android:id="@+id/frag"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:name="androidx.navigation.fragment.NavHostFragment"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navGraph="@navigation/nav_frag"/>
</androidx.constraintlayout.widget.ConstraintLayout>
</layout>
I have try the following link
But it will back to the fragment1 when I change the start destination to the fragment2.
How to change the start destination dynamic in Android , and will not back to the fragment1 when set start destination to the fragment2 ?
Did I missing something ? Thanks in advance.
