March 2013
Beginner to intermediate
580 pages
16h 11m
English
Content preview from Android Programming: The Big Nerd Ranch GuideBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Loading the List of Runs
The current implementation of RunListFragment asks the RunManager directly for the RunCursor representing the list of runs in onCreate(Bundle). In this section, you will introduce a loader to indirectly execute this query on another thread. The RunListFragment will tell the LoaderManager to start (and restart) the loader and implement the LoaderCallbacks to know when the data is ready.
To simplify the code within the RunListFragment (and elsewhere, later), first create an abstract AsyncTaskLoader subclass called SQLiteCursorLoader as in Listing 35.1. This class mimics most of the code in CursorLoader, without the requirement of using a ContentProvider.
Listing 35.1 A loader for SQLite cursors (SQLiteCursorLoader.java)
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