CODEWITHSUNDEEP
androidsqliteandroid-intent
Andrea Sindico
Andrea Sindico

Reputation: 7440

Intent Service, Content Provider and Loader

When developing android applications I use Loaders to asynchronously retrieve data from a local SQLite DB through a content provider and update the Views.

When I have to retrieve data from the Internet (i.e. JSON) I use intent services. As the download finishes a broadcast receiver is triggered and the collected data stored through a Content Provider in a local SQLite Db.

Is there any way to trigger loaders execution after the DB is updated? The first time data are downloaded from the Internet I update the UI in the broadcast receiver after having updated the DB but it would be more coherent to do that through the loader as well.

UPDATE

Plase notice that I would like to have an answer based on Android stardard classes (Not libraries from 3rd parties)

Upvotes: 2

Views: 613

Answers (1)

Gil Vegliach
Gil Vegliach

Reputation: 3562

Is there any way to trigger loaders execution after the DB is updated?

Yes, just implement the notification mechanism in the ContentProvider. Basically:

  • in query(), before returning the Cursor call Cursor.setNotificationUri()

  • in insert(), delete(), update(), notify the changes to the uri with ContentResolver.notifyChange()

See also this other answer of mine.

Upvotes: 3

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