Manage Title with Fragment Stack Changed

Question

I am using Fragment activity and a number of fragments to get added and poped out on back press.

Supposed I am adding Fragment B from Fragment A. The title of action bar that I set in A changes by navigating to B; but it is not restoring to A when I pop the fragment B out of the fragment stack as onResume of fragment is not being called.

I am using the code:

FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().add(R.id.container, fragmentToReplace, tag).addToBackStack(tag).commit();

and to pop out the last fragment:

fragmentManager.popBackStack();

How to manage this. Please suggest.

check this answer http://stackoverflow.com/questions/6503189/fragments-onresume-from-back-stack — null pointer, Apr 29 '15 at 11:01
oncreate view is not being called again as fragment is already added. I have not replaced the fragment but added the new one — Aashutosh Prashar, Apr 29 '15 at 12:45

score 0 · Answer 1 · edited Apr 29 '15 at 11:12

You can use onBackStackChanged listener which will be called whenever a fragment is popped back. To add the listener use this:

 getFragmentManager().addOnBackStackChangedListener(this);

In Override function, check the fragment which is popped and according to it you can change the actionbar title:

  @Override
public void onBackStackChanged() {
  //Check the fragment from the FrameLayout Container R.id.container
  // Depending on the Fragment you can change the Title
  setTitle("xyz");    
   }

score 0 · Answer 2 · answered Apr 29 '15 at 11:24

0

Create new class in your package and extend with Fragment says TestFragment and create abstract method in it

abstract public String getTitle();

than extend your every fragment with TestFragment and override getTitle() in your fragments.

public String getTitle(){
      return "YOUR_FRAGMENT_NAME";
}


getSupportFragmentManager().addOnBackStackChangedListener(
                new OnBackStackChangedListener() {

                    @Override
                    public void onBackStackChanged() {
                        Fragment fragment = getSupportFragmentManager().findFragmentById(R.id.content_frame);
                        this.setTitle(fragment.getTitle());
                    }
                });

answered Apr 29 '15 at 11:24

Haris Qurashi

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I have done this but problem is that List is referencing the second last fragment not the last one. Please suggest. Like if I add the fragment B the setTitle of fragment A is being called. – Aashutosh Prashar Apr 29 '15 at 12:42
Create a post delay of 100-200 using handler, than check – Haris Qurashi Apr 29 '15 at 12:43
have you override onBackPressed() in your activity?? – Haris Qurashi Apr 29 '15 at 12:56
Yes; Is there something which is conflicting it? – Aashutosh Prashar Apr 30 '15 at 05:04

Manage Title with Fragment Stack Changed

2 Answers2