How to make sure that back button for settings fragment goes to the launching fragment with aac

Question

So I have an issue with AAC navigation. I have multiple fragments in one activity. I inflate the menu options in MainActivity so that each fragment has access to the menu item which opens the settings. The problem is that each time I press the back button on a fragment, it does not go back to the fragment that launched it. It goes back to the original fragment. Is there a way to make sure this behavior is assured? Thanks

Did you calling fragment by menu item Id? – Hussnain Haidar Feb 13 '19 at 12:40 — Hussnain Haidar, Feb 13 '19 at 12:40

Hussnain Haidar · Accepted Answer · 2019-02-13T12:54:09.820

1

If you are calling fragment by menu item id then do it in your activity like below.It will solve your problem.

override fun onOptionsItemSelected(item: MenuItem): Boolean {
    return NavigationUI.onNavDestinationSelected(item,navController) || super.onOptionsItemSelected(item)
}

And your menu item:

<menu xmlns:android="http://schemas.android.com/apk/res/android" 
  xmlns:app="http://schemas.android.com/apk/res-auto">
<item
        android:id="@+id/settingsFragment"
        android:title="Settings"
        android:menuCategory="secondary"
        app:showAsAction="never" />

MenuCategory = "secondary" will not pop out back stack to start destination.

edited Feb 13 '19 at 12:54

answered Feb 13 '19 at 12:45

Hussnain Haidar

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I'll be damned but this works!!. Thanks. Let me mark it as the correct answer – Beast77 Feb 13 '19 at 13:01
me too...i didn't believe it happens. – Hussnain Haidar Feb 13 '19 at 13:04
It does work. I am using Java though to implement the AAC navigation component. The idea is the same though. Once again, thanks. Back to work now. – Beast77 Feb 13 '19 at 13:05

score 0 · Answer 2 · answered Feb 13 '19 at 12:12

0

You should use a FragmentManager and add the fragment to the BackStack.

I recommend taking a look at this post: Go back to the previous fragment

answered Feb 13 '19 at 12:12

P. Vera

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4
11

1

If he uses Navigation AAC then he shouldn't need to touch the FragmentManager directly – EpicPandaForce Feb 13 '19 at 12:15
How should I do it @EpicPandaForce? Because the way suggested by P. Vera is for the older method of simply using a navigation drawer and not aac navigation – Beast77 Feb 13 '19 at 12:18
2

Guys, check out the answer I have marked as correct above. It is brilliant – Beast77 Feb 13 '19 at 13:02

How to make sure that back button for settings fragment goes to the launching fragment with aac

2 Answers2