MockContentProvider

A constructor accepting a Context instance, which is supposed to be the subclasss of MockContext .

A constructor which initialize four member variables which ContentProvider have internally.

A constructor using MockContext instance as a Context in it.

Override this to handle requests to perform a batch of operations, or the default implementation will iterate over the operations and call apply(ContentProvider, ContentProviderResult[], int) on each of them. If all calls to apply(ContentProvider, ContentProviderResult[], int) succeed then a ContentProviderResult array with as many elements as there were operations will be returned. If any of the calls fail, it is up to the implementation how many of the others take effect. This method can be called from multiple threads, as described in Processes and Threads .

After being instantiated, this is called to tell the content provider about itself.

If you're reluctant to implement this manually, please just call super.bulkInsert().

Implement this to handle requests to delete one or more rows. The implementation should apply the selection clause when performing deletion, allowing the operation to affect multiple rows in a directory. As a courtesy, call notifyDelete() after deleting. 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. That is, the client would pass in content://contacts/people/22 and the implementation is responsible for parsing the record number (22) when creating a SQL statement.

Called by a client to determine the types of data streams that this content provider supports for the given URI. The default implementation returns null , meaning no types. If your content provider stores data of a particular type, return that MIME type if it matches the given mimeTypeFilter. If it can perform type conversions, return an array of all supported MIME types that match mimeTypeFilter.

Implement this to handle requests for the MIME type of the data at the given URI. The returned MIME type should start with vnd.android.cursor.item for a single record, or vnd.android.cursor.dir/ for multiple items. This method can be called from multiple threads, as described in Processes and Threads .

Note that there are no permissions needed for an application to access this information; if your content provider requires read and/or write permissions, or is not exported, all applications can still call this method regardless of their access permissions. This allows them to retrieve the MIME type for a URI when dispatching intents.

Implement this to handle requests to insert a new row. As a courtesy, call notifyChange() after inserting. This method can be called from multiple threads, as described in Processes and Threads .

Implement this to initialize your content provider on startup. This method is called for all registered content providers on the application main thread at application launch time. It must not perform lengthy operations, or application startup will be delayed.

You should defer nontrivial initialization (such as opening, upgrading, and scanning databases) until the content provider is used (via query(Uri, String[], String, String[], String) , insert(Uri, ContentValues) , etc). Deferred initialization keeps application startup fast, avoids unnecessary work if the provider turns out not to be needed, and stops database errors (such as a full disk) from halting application launch.

If you use SQLite, SQLiteOpenHelper is a helpful utility class that makes it easy to manage databases, and will automatically defer opening until first use. If you do use SQLiteOpenHelper, make sure to avoid calling getReadableDatabase() or getWritableDatabase() from this method. (Instead, override onOpen(SQLiteDatabase) to initialize the database when it is first opened.)

Called by a client to open a read-only stream containing data of a particular MIME type. This is like openAssetFile(Uri, String) , except the file can only be read-only and the content provider may perform data conversions to generate data of the desired type.

The default implementation compares the given mimeType against the result of getType(Uri) and, if they match, simply calls openAssetFile(Uri, String) .

See ClipData for examples of the use and implementation of this method.

The returned AssetFileDescriptor can be a pipe or socket pair to enable streaming of data.

For better interoperability with other applications, it is recommended that for any URIs that can be opened, you also support queries on them containing at least the columns specified by OpenableColumns . You may also want to support other common columns if you have additional meta-data to supply, such as DATE_ADDED in MediaStore.MediaColumns .

Implement this to handle query requests from clients. This method can be called from multiple threads, as described in Processes and Threads .

Example client call:

          // Request a specific record.
 Cursor managedCursor = managedQuery(
                ContentUris.withAppendedId(Contacts.People.CONTENT_URI, 2),
                projection,    // Which columns to return.
                null,          // WHERE clause.
                null,          // WHERE clause value substitution
                People.NAME + " ASC");   // Sort order.
         

          // SQLiteQueryBuilder is a helper class that creates the
        // proper SQL syntax for us.
        SQLiteQueryBuilder qBuilder = new SQLiteQueryBuilder();

        // Set the table we're querying.
        qBuilder.setTables(DATABASE_TABLE_NAME);

        // If the query ends in a specific record number, we're
        // being asked for a specific record, so set the
        // WHERE clause in our query.
        if((URI_MATCHER.match(uri)) == SPECIFIC_MESSAGE){
            qBuilder.appendWhere("_id=" + uri.getPathLeafId());
        }

        // Make the query.
        Cursor c = qBuilder.query(mDb,
                projection,
                selection,
                selectionArgs,
                groupBy,
                having,
                sortOrder);
        c.setNotificationUri(getContext().getContentResolver(), uri);
        return c;
         

Implement this to handle requests to update one or more rows. The implementation should update all rows matching the selection to set the columns according to the provided values map. As a courtesy, call notifyChange() after updating. This method can be called from multiple threads, as described in Processes and Threads .