Why Isn\'t My New Fragment Showing After Replacement in an Activity Group?

Troubleshooting Fragment Replacement in Activity Groups

When working with fragments within activity groups, replacing one fragment with another can sometimes present challenges. This article focuses on resolving an issue where a fragment replacement fails to display the new fragment.

Problem:

When attempting to replace a fragment in an activity group, using the code provided, the new fragment is not visible, despite the code executing without errors.

Analysis:

Fragments that are hard-coded in the XML layout cannot be replaced dynamically. To replace a fragment, it needs to be dynamically added.

Solution:

To solve this issue, fragments should be added dynamically instead of relying on hard-coding in the XML layout. The following code snippet demonstrates how to dynamically replace a fragment:

// Create new fragment and transaction
Fragment newFragment = new ExampleFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();

// Replace whatever is in the fragment_container view with this fragment,
// and add the transaction to the back stack if needed
transaction.replace(R.id.fragment_container, newFragment);
transaction.addToBackStack(null);

// Commit the transaction
transaction.commit();

Note: R.id.fragment_container is a layout or container of your choice in the activity you are adding the fragment to.

By following this approach, fragments can be replaced dynamically, ensuring that the new fragment becomes visible upon transaction.

The above is the detailed content of Why Isn\'t My New Fragment Showing After Replacement in an Activity Group?. For more information, please follow other related articles on the PHP Chinese website!