Check if a fragment exists and reuse it

Question

I'm using the following code to create a fragment everytime the user click on an item in a list view. But in this way the fragment is created at every user click. What I want is to reuse the old fragment (if it exists) and only reload its content (don't create a new one).

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MagazineViewFragment fragment = new MagazineViewFragment();
fragment.openStream(itemSelected);

FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
        .replace(R.id.container,  fragment)
        .commit();

How can I do?

Answer 1

There're multiple ways, probably the most easy one is to check if the current Fragment in your container is an instance of FragmentXYZ (in your case MagazineViewFragment).

Example

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Fragment mFragment = getFragmentManager().findFragmentById(R.id.container);
if (mFragment instanceof MagazineViewFragment)
    return;