Remove Old Fragment from Fragment Manager

Remove old Fragment from fragment manager

You need to find reference of existing Fragment and remove that fragment using below code. You need add/commit fragment using one tag ex. "TAG_FRAGMENT".

Fragment fragment = getSupportFragmentManager().findFragmentByTag(TAG_FRAGMENT);
if(fragment != null)
    getSupportFragmentManager().beginTransaction().remove(fragment).commit();

That is it.

How to remove older entries of same fragment from backstack?

After playing with popBackStackImmediate, i'm able to solve my issue. I have added POP_BACK_STACK_INCLUSIVE to popBackStackImmediate.

 if (isFragmentInBackstack(manager, tag)) {
           manager.popBackStackImmediate(tag,FragmentManager.POP_BACK_STACK_INCLUSIVE);
                } else {
                // Fragment doesn't exist
                // STEP 1 + additional backstack management
            }

Replace Fragment and remove old Fragment

Use fragmentTransaction.replace() instead of fragmentTransaction.add()

From the documentation:

Replace an existing fragment that was added to a container. This is
essentially the same as calling remove(Fragment) for all currently
added fragments that were added with the same containerViewId and then
add(int, Fragment, String) with the same arguments given here.

How to Remove All Previous Fragments from Current Fragment except current one and first one?

On destroy of the Fragment F5 clear Back Stack upto F2.

Try something like this:

public method in your MainActivity:

public void clearBackStackInclusive(String tag) {
     getSupportFragmentManager().popBackStack(tag, FragmentManager.POP_BACK_STACK_INCLUSIVE);
}

now in your F5 fragment:

@Override
public void onDestroy() {
   super.onDestroy();
   ((MainActivity)getActivity()).clearBackStackInclusive("tag"); // tag (addToBackStack tag) should be the same which was used while transacting the F2 fragment
}

Reference

Remove all fragments from container

You can try below code

getSupportFragmentManager().beginTransaction().remove(frag).commit(); 

*frag is the object of fragment that you want to remove.

 OR
getFragmentManager().beginTransaction().remove(getFragmentManager().findFragmentById(R.id.your_container)).commit();

it will remove the fragment that is loded in "your_container" container.

HapPy coding.

Replacing the current fragment by removing the previous one

You can handle the onBackPressed() event and replace whatever is the current fragment to fragment B.

Remove fragment from activity when clicking button?

try this first add the fragment to backstack like this

FragmentManager fragmentManager = getFragmentManager();
    FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
    fragmentTransaction.replace(..............);
    fragmentTransaction.addToBackStack(null);
    fragmentTransaction.commit(); 

Then remove the fragment like this:-

FragmentManager fm = getActivity().getSupportFragmentManager();
      if(fm.getBackStackEntryCount()>0) {
      fm.popBackStack();
}

to remove all fragments

FragmentManager fm = getActivity().getSupportFragmentManager();
      for (int i = 0; i < fm.getBackStackEntryCount(); ++i) {
      fm.popBackStack();
}

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