How to Dynamically Replace Fragments within an Activity Group?

Replacing Fragments within an Activity Group

This question concerns replacing a fragment within an activity group with another fragment. The provided code is failing to display the intended view while executing without errors. Let's delve into the issue and provide a solution.

The Problem

The initial code attempts to replace a fragment with ID R.id.book_description_fragment by replacing it with a SectionDescriptionFragment. However, the view fails to appear.

The Solution

Fragments defined statically in XML cannot be dynamically replaced. To address this limitation:

1. Add Fragments Dynamically: Dynamically add the desired fragments to the activity group at runtime to facilitate replacement.
2. Replace Fragment Code: Use the following updated version of the code snippet that dynamically replaces fragments:

Fragment newFragment = new SectionDescriptionFragment();
FragmentTransaction transaction = getActivity().getFragmentManager().beginTransaction();
transaction.replace(R.id.fragment_container, newFragment);
transaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
transaction.addToBackStack(null);
transaction.commit();

3. Fragment Container ID: Ensure that R.id.fragment_container corresponds to the layout or container within the activity group that will host the dynamic fragments.

Key Notes:

• Remember to define the fragment container in your activity group's XML layout.
• When replacing fragments, the content in the fragment container will be replaced with the new fragment.
• Utilizing the addToBackStack method allows the user to navigate back to the previous fragment.

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