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I use SimpleCursorAdapter to send data which I read from database to ListView.
SimpleCursorAdapter has 2 flags and one of them is deprecated.
Should I always use FLAG_CONTENT_OBSERVER?
Or is it better to use something else instead of SimpleCursorAdapter?
Read the docs on those flags.
FLAG_AUTO_REQUERYis deprecated because with it Cursor queries are performed often in UI thread. You should try to use CursorLoader instead. CursorLoader can automatically requery and deliver data in a background thread.FLAG_REGISTER_CONTENT_OBSERVERis just registering a content observer on a cursor so you c receive notifications on new data.