How to remove only one fragment from backstack in fragment navigation component?

Question

In my app i have used one activity and four fragment . In this app I used navigation component. My fragment loading sequence is A->B->C->D

In fragment D On device back button press I want to remove fragment C from backstack so that fragment B can open. Any one suggest me how can I do Thank you in advance

this is my navigation_graph.xml

<?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/navigation_graph"

    app:startDestination="@id/firstFragment"
    >
    <fragment
        android:id="@+id/firstFragment"
        android:name="com.education.javaprogramming.fragments.MainFragment"
        android:label="fragment_first"
        tools:layout="@layout/activity_main" >

        <action
            android:id="@+id/action_firstFragment_to_displayList1Fragment"
            app:destination="@id/displayList1Fragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"
            />
        <action
            android:id="@+id/action_firstFragment_to_displayList2Fragment"
            app:destination="@id/displayList2Fragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"

            />
        <action
            android:id="@+id/action_firstFragment_to_helpFragment"
            app:destination="@id/helpFragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"
            />
        <action
            android:id="@+id/action_firstFragment_to_quizzFragment"
            app:destination="@id/quizzFragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"

            />
    </fragment>
    <fragment
        android:id="@+id/displayList1Fragment"
        android:name="com.education.javaprogramming.fragments.DisplayList1Fragment"
        android:label="fragment_display_list1"
        tools:layout="@layout/fragment_display_list1"

        >
        <argument
            android:name="position1"
            app:argType="integer" />
        <action
            android:id="@+id/action_displayList1Fragment_to_firstFragment"
            app:destination="@id/firstFragment" />
        <argument
            android:name="name"
            app:argType="string" />
        <action
            android:id="@+id/action_displayList1Fragment_to_displayList2Fragment"
            app:destination="@id/displayList2Fragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"


            />
    </fragment>
    <fragment
        android:id="@+id/displayList2Fragment"
        android:name="com.education.javaprogramming.fragments.DisplayList2Fragment"
        android:label="fragment_display_list2"
        tools:layout="@layout/fragment_display_list2" >
        <action
            android:id="@+id/action_displayList2Fragment_to_displayList1Fragment"
            app:destination="@id/displayList1Fragment"

            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"
            />
        <action
            android:id="@+id/action_displayList2Fragment_to_firstFragment"
            app:destination="@id/firstFragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"

            />
        <argument
            android:name="position1"
            app:argType="integer" />
        <argument
            android:name="position2"
            app:argType="integer" />
        <argument
            android:name="name"
            app:argType="string" />
        <action
            android:id="@+id/action_displayList2Fragment_to_displayListInDeFragment"
            app:destination="@id/displayListInDeFragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"

            />
    </fragment>
    <fragment
        android:id="@+id/displayListInDeFragment"
        android:name="com.education.javaprogramming.fragments.DisplayListInDeFragment"
        android:label="fragment_display_list_in_de"
        tools:layout="@layout/fragment_display_list_in_de" >
        <action
            android:id="@+id/action_displayListInDeFragment_to_displayList2Fragment"
            app:destination="@id/displayList2Fragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"

            />
        <argument
            android:name="position1"
            app:argType="integer" />
        <argument
            android:name="position2"
            app:argType="integer" />
        <argument
            android:name="position3"
            app:argType="integer" />
        <argument
            android:name="name"
            app:argType="string" />
    </fragment>
    <fragment
        android:id="@+id/helpFragment"
        android:name="com.education.javaprogramming.fragments.HelpFragment"
        android:label="fragment_help"
        tools:layout="@layout/fragment_help" >
        <action
            android:id="@+id/action_helpFragment_to_firstFragment"
            app:destination="@id/firstFragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"
            />
        <argument
            android:name="position1"
            app:argType="integer" />
        <argument
            android:name="name"
            app:argType="string" />
        <action
            android:id="@+id/action_helpFragment_to_aboutFragment"
            app:destination="@id/aboutFragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"

            />
    </fragment>
    <fragment
        android:id="@+id/aboutFragment"
        android:name="com.education.javaprogramming.fragments.AboutFragment"
        android:label="fragment_about"
        tools:layout="@layout/fragment_about" >
        <action
            android:id="@+id/action_aboutFragment_to_helpFragment"
            app:destination="@id/helpFragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"
            />
    </fragment>
    <fragment
        android:id="@+id/quizzFragment"
        android:name="com.education.javaprogramming.fragments.QuizzFragment"
        android:label="fragment_quizz"
        tools:layout="@layout/fragment_quizz" >
        <action
            android:id="@+id/action_quizzFragment_to_firstFragment"
            app:destination="@id/firstFragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"

            />
        <action
            android:id="@+id/action_quizzFragment_to_displayExamFragment"
            app:destination="@id/displayExamFragment" />
    </fragment>
    <fragment
        android:id="@+id/displayExamFragment"
        android:name="com.education.javaprogramming.fragments.DisplayExamFragment"
        android:label="fragment_display_exam"
        tools:layout="@layout/fragment_display_exam" >
        <action
            android:id="@+id/action_displayExamFragment_to_quizzFragment"
            app:destination="@id/quizzFragment"
            app:enterAnim="@anim/enter"
            app:exitAnim="@anim/exit"
            app:popEnterAnim="@anim/pop_enter"
            app:popExitAnim="@anim/pop_exit"

            />
        <argument
            android:name="position1"
            app:argType="integer" />
        <action
            android:id="@+id/action_displayExamFragment_to_resultFragment"
            app:destination="@id/resultFragment" />
    </fragment>
    <fragment
        android:id="@+id/resultFragment"
        android:name="com.education.javaprogramming.fragments.ResultFragment"
        android:label="fragment_result"
        tools:layout="@layout/fragment_result" >
        <action

            android:id="@+id/action_resultFragment_to_quizzFragment"
            app:destination="@id/quizzFragment" />
        <argument android:name="givenAnswers"
            app:argType="reference"
            />
        <argument android:name="actualAnswers"
            app:argType="reference"
            />
    </fragment>


</navigation>

Are you want to remove D and C fragments with one back click ? — Mohit Kalia, Apr 29 '19 at 08:20
you have to use tags and popBackstack... see https://stackoverflow.com/questions/38852930/pop-specific-fragment-from-stack-and-remove-others/38853275 — Anis BEN NSIR, Apr 29 '19 at 08:22
Yes. When I'm on fragment D and press back button then I want to remove C D — Sushant Bansode, Apr 29 '19 at 08:23
Possible duplicate of [pop specific fragment from stack and remove others](https://stackoverflow.com/questions/38852930/pop-specific-fragment-from-stack-and-remove-others) — Anis BEN NSIR, Apr 29 '19 at 08:23
@AnisBENNSIR I'm using navigation component will it work for me — Sushant Bansode, Apr 29 '19 at 08:28
no with nav component you have to add params to you action: app:popUpTo="@+id/main_nav_graph" app:popUpToInclusive="true" this link may help: https://stackoverflow.com/questions/50514758/how-to-clear-navigation-stack-after-navigating-to-another-fragment-in-android — Anis BEN NSIR, Apr 29 '19 at 08:42
@SushantBansode could you please provide your nav_graph.xml? — Anis BEN NSIR, Apr 29 '19 at 08:48

Bharatesh · Answer 1 · 2019-04-29T10:31:21.590

4

You can use navController.popBackStack(int destinationId,bool inclusive) method, (please mind boolean value)

Attempts to pop the controller's back stack back to a specific destination. eg.

navController.popBackStack(R.id.dest_id_of_B, true)

edited Apr 29 '19 at 10:31

answered Apr 29 '19 at 10:21

Bharatesh

8,375
3
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I had almost the same problem and this solution helped me! Thanks @bharatesh – Augusto Pinto Oct 20 '20 at 13:03

score 3 · Answer 2 · answered Mar 21 '20 at 07:29

3

You should use

      app:popUpTo="@id/id_of_c_fragment" 
      app:popUpToInclusive="true"
      app:popUpTo="@id/id_of_d_fragment"
      app:popUpToInclusive="true"

in navigation graph in action scope.

answered Mar 21 '20 at 07:29

khamidjon

61
1
5

Worked for me exactly as I needed it, and I believe it's much simpler like this, putting it in the xml, than doing it programmatically – FabioR Nov 27 '20 at 16:42

score 1 · Answer 3 · edited Aug 20 '20 at 10:37

1

In fragment D, if you want to back to fragment B (remove fragment C), you can use:

Navigation.findNavController(requireView()).popBackStack(
    R.id.id_of_fragment_C, true)

id_of_fragment_C is the id of fragment which you want to skip.

edited Aug 20 '20 at 10:37

Ralf

13,322
4
31
55

answered Aug 20 '20 at 08:56

Le Trung Hieu

71
5

How to remove only one fragment from backstack in fragment navigation component?

3 Answers3