For more information, read Handling Runtime Changes.The default content provider implementation does nothing. (Content providers do not usually care about things like screen orientation, but may want to know about locale changes.) Implement this to initialize your content provider on startup.That is, the client would pass in , meaning no types.
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If you implement support for canonical URIs, all incoming calls with URIs (including this one) must perform this verification and recovery of any canonical URIs they receive.
In addition, you must also implement Implement this to handle requests to delete one or more rows.
This allows them to retrieve the MIME type for a URI when dispatching intents.
Called by the system when the device configuration changes while your component is running.
The implementation should apply the selection clause when performing deletion, allowing the operation to affect multiple rows in a directory. This method can be called from multiple threads, as described in Processes and Threads.
The implementation is responsible for parsing out a row ID at the end of the URI, if a specific row is being deleted.Any implementation of this method must do its own permission checks on incoming calls to make sure they are allowed.Implement this to support canonicalization of URIs that refer to your content provider.If you don't need to share data amongst multiple applications you can use a database directly via the system inspects the authority of the given URI and passes the request to the content provider registered with the authority.The content provider can interpret the rest of the URI however it wants. A content provider is only required if you need to share data between multiple applications.