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I've looked at all the questions on Stackoverflow but could not find a single definitive answer to this question. How do you set a Tag to a Fragment so that you can retrieve it via getFragmentManager().findFragmentByTag()? Could someone give a simple code example of how to create a tag to a Fragment?
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A Fragment represents a reusable portion of your app's UI. A fragment defines and manages its own layout, has its own lifecycle, and can handle its own input events. Fragments cannot live on their own--they must be hosted by an activity or another fragment.
Add a fragment to an activity You can add your fragment to the activity's view hierarchy either by defining the fragment in your activity's layout file or by defining a fragment container in your activity's layout file and then programmatically adding the fragment from within your activity.
We can use the getSupportFragmentManager() method to get a fragment manager. FragmentTransaction. add(): This method is used to add a fragment to the activity. addToBackStack(): This method is used to add a transaction to the back stack.
You can set a Tag during fragment transaction.
For example if it's a replace transaction you could do it like so:
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.fragment_container, mFragment, TAG)
.commit();
If the Fragment you're using is not from Support Library, use getFragmentManager() instead of getSupportFragmentManager().
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