Using UIDocumentInteractionController Annotation Properties

I am using UIDocumentInteractionController

to share an image made in my application with another application. When you use this to share with Instagram, you can set the annotation property with a dictionary containing a key @"InstagramCaption"

that pre-populates the comment.

I would like to know if this can be done with other applications, and if so, what are the keys for the dictionary.

I'm mostly interested in doing this with the messages app and the mail app (title and body), but if you know the keys for other apps that allow you to interact with documents, that would be great too (Facebook, Twitter, WhatsApp, Path, Tumblr, ...).

That's what I'm doing:

- (void)openImageInOtherApp:(UIImage *)image
{
    NSError *error = nil;
    NSURL *tempDirectoryURL = [NSURL fileURLWithPath:NSTemporaryDirectory()];
    NSURL *imageURL = [tempDirectoryURL URLByAppendingPathComponent:@"image.jpeg" isDirectory:NO];
    NSData *imageData = UIImageJPEGRepresentation(image, 0.8);
    BOOL saveSucceeded = [imageData writeToURL:imageURL options:NSDataWritingAtomic error:&error];

    if (!saveSucceeded || error) {
        NSLog(@"Error : Saving image %@ at URL %@ failed with error : %@", image, imageURL, error);
        return;
    }

    UIDocumentInteractionController *interactionController = [[UIDocumentInteractionController alloc] init];
    interactionController.delegate = self;
    interactionController.URL = imageURL;
    NSString *comment = @"A test comment"; // A comment that will be sent along with the image
    if (comment != nil && comment.length > 0) {
        interactionController.annotation = @{@"someKey": comment};
    }
    self.interactionController = interactionController;

    BOOL canOpenDocument = [interactionController presentOptionsMenuFromRect:self.view.bounds inView:self.view animated:YES];
    NSLog(@"canOpenDocument : %@", canOpenDocument ? @"YES" : @"NO");
}

      

        
        
        
      

    

Then the system view appears where I can select the application that can open the file.