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Editorial Team
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Asked: 2026-05-27T17:31:35+00:00

When creating an Android application using Loaders, should every activity and fragment have its

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When creating an Android application using Loaders, should every activity and fragment have its own LoaderManager? Or should there only be one LoaderManager that the application owns? And lastly, are the “unique IDs” that are used to identify specific LoaderManagers visible outside of the class?

Specifically, I’m having trouble deciding which classes in my application should implement the LoaderCallback<Cursor> methods (i.e. should each fragment implement these callbacks, or should I have one fragment implement the callbacks and query the results, sending them to other fragments/activities as necessary)?

Thanks in advance to anyone who can help me out! I couldn’t find too much information about this online.

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  1. Editorial Team

    LoaderManger‘s are managed and owned by the activity. You can create the actual loaders in your fragments or the activity, they will be manged by the same LoaderManager. Unique ID’s are to identify different loaders you might have in the same activitiy. For example ID=0 -> FooLoader, ID=1 -> BarLoader, etc.

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