IT. Expert System.

Constants for the stream_items table, which contains social stream updates from the user's contact list.

Only a certain number of stream items will ever be stored under a given raw contact. Users of this API can query CONTENT_LIMIT_URI to determine this limit, and should restrict the number of items inserted in any given transaction correspondingly. Insertion of more items beyond the limit will automatically lead to deletion of the oldest items, by ContactsContract.StreamItemsColumns.TIMESTAMP.

Access to the social stream through these URIs requires additional permissions beyond the read/write contact permissions required by the provider. Querying for social stream data requires android.permission.READ_SOCIAL_STREAM permission, and inserting or updating social stream items requires android.permission.WRITE_SOCIAL_STREAM permission.

Account check

The content URIs to the insert, update and delete operations are required to have the account information matching that of the owning raw contact as query parameters, namely ContactsContract.SyncColumns.ACCOUNT_TYPE and ContactsContract.SyncColumns.ACCOUNT_NAME. ContactsContract.RawContactsColumns.DATA_SET isn't required.

Operations

Insert

Social stream updates are always associated with a raw contact. There are a couple of ways to insert these entries.

Via the ContactsContract.RawContacts.StreamItems.CONTENT_DIRECTORY sub-path of a raw contact:

 ContentValues values = new ContentValues();
 values.put(StreamItems.TEXT, "Breakfasted at Tiffanys");
 values.put(StreamItems.TIMESTAMP, timestamp);
 values.put(StreamItems.COMMENTS, "3 people reshared this");
 Uri.Builder builder = RawContacts.CONTENT_URI.buildUpon();
 ContentUris.appendId(builder, rawContactId);
 builder.appendEncodedPath(RawContacts.StreamItems.CONTENT_DIRECTORY);
 builder.appendQueryParameter(RawContacts.ACCOUNT_NAME, accountName);
 builder.appendQueryParameter(RawContacts.ACCOUNT_TYPE, accountType);
 Uri streamItemUri = getContentResolver().insert(builder.build(), values);
 long streamItemId = ContentUris.parseId(streamItemUri);
 

Via ContactsContract.Contacts.CONTENT_URI:

 ContentValues values = new ContentValues();
 values.put(StreamItems.RAW_CONTACT_ID, rawContactId);
 values.put(StreamItems.TEXT, "Breakfasted at Tiffanys");
 values.put(StreamItems.TIMESTAMP, timestamp);
 values.put(StreamItems.COMMENTS, "3 people reshared this");
 Uri.Builder builder = StreamItems.CONTENT_URI.buildUpon();
 builder.appendQueryParameter(RawContacts.ACCOUNT_NAME, accountName);
 builder.appendQueryParameter(RawContacts.ACCOUNT_TYPE, accountType);
 Uri streamItemUri = getContentResolver().insert(builder.build(), values);
 long streamItemId = ContentUris.parseId(streamItemUri);

Once a ContactsContract.Contacts.StreamItems entry has been inserted, photos associated with that social update can be inserted. For example, after one of the insertions above, photos could be added to the stream item in one of the following ways:

Via a URI including the stream item ID:

 values.clear();
 values.put(StreamItemPhotos.SORT_INDEX, 1);
 values.put(StreamItemPhotos.PHOTO, photoData);
 getContentResolver().insert(Uri.withAppendedPath(
     ContentUris.withAppendedId(StreamItems.CONTENT_URI, streamItemId),
     StreamItems.StreamItemPhotos.CONTENT_DIRECTORY), values);
 

Via CONTENT_PHOTO_URI:

 values.clear();
 values.put(StreamItemPhotos.STREAM_ITEM_ID, streamItemId);
 values.put(StreamItemPhotos.SORT_INDEX, 1);
 values.put(StreamItemPhotos.PHOTO, photoData);
 getContentResolver().insert(StreamItems.CONTENT_PHOTO_URI, values);
 

Note that this latter form allows the insertion of a stream item and its photos in a single transaction, by using ContentProviderOperation with back references to populate the stream item ID in the ContentValues.

Update

Updates can be performed by appending the stream item ID to the ContactsContract.Contacts.CONTENT_URI URI. Only social stream entries that were created by the calling package can be updated.

Delete

Deletes can be performed by appending the stream item ID to the ContactsContract.Contacts.CONTENT_URI URI. Only social stream entries that were created by the calling package can be deleted.

Query

Finding all social stream updates for a given contact

By Contact ID:

 Cursor c = getContentResolver().query(Uri.withAppendedPath(
          ContentUris.withAppendedId(Contacts.CONTENT_URI, contactId),
          Contacts.StreamItems.CONTENT_DIRECTORY),
          null, null, null, null);
 

By lookup key:

 Cursor c = getContentResolver().query(Contacts.CONTENT_URI.buildUpon()
          .appendPath(lookupKey)
          .appendPath(Contacts.StreamItems.CONTENT_DIRECTORY).build(),
          null, null, null, null);
 

Finding all social stream updates for a given raw contact

 Cursor c = getContentResolver().query(Uri.withAppendedPath(
          ContentUris.withAppendedId(RawContacts.CONTENT_URI, rawContactId),
          RawContacts.StreamItems.CONTENT_DIRECTORY)),
          null, null, null, null);
 

Querying for a specific stream item by ID

 Cursor c = getContentResolver().query(ContentUris.withAppendedId(
          StreamItems.CONTENT_URI, streamItemId),
          null, null, null, null);