Objective-C：以编程方式在instagram直接消息或Feed中共享文本

Question

我想在Instagram上通过Feed或通过iOS中我的应用发送的直接消息分享一些文本。有人可以让我知道该怎么做吗？我已经尝试过Instagram API文档，但是使用此标题不起作用，唯一的图像在供稿或故事中共享。但是在Android中，它是使用Intent共享文本作为直接消息。

我尝试了以下代码：

@property(nonatomic, strong) UIDocumentInteractionController *docController;



    -(void)InstagramBtnClick: (id)sender {
        NSURL *myImgUrl = [NSURL URLWithString: @"https://www.materials-world.com/bricks/glen-gery/red/images/red_cliff_w12-DA.jpg"];
        NSData * imageData = [[NSData alloc] initWithContentsOfURL: myImgUrl];
        UIImage *imgShare = [[UIImage alloc] initWithData:imageData];
        NSURL *instagramURL = [NSURL URLWithString:@"instagram://app"];
        if([[UIApplication sharedApplication] canOpenURL:instagramURL]) //check for App is install or not
        {

            UIImage *imageToUse = imgShare;
            NSString *documentDirectory=[NSHomeDirectory() stringByAppendingPathComponent:@"Documents"];
            NSString *saveImagePath=[documentDirectory stringByAppendingPathComponent:@"Image.igo"];
            NSData *imageData=UIImagePNGRepresentation(imageToUse);
            [imageData writeToFile:saveImagePath atomically:YES];
            NSURL *imageURL=[NSURL fileURLWithPath:saveImagePath];
            self.docController=[[UIDocumentInteractionController alloc]init];
            self.docController = [UIDocumentInteractionController interactionControllerWithURL:imageURL];
            self.docController.delegate = self;
            self.docController.annotation = [NSDictionary dictionaryWithObjectsAndKeys:@"Testing Caption Text", @"InstagramCaption", nil];
            self.docController.UTI = @"com.instagram.exclusivegram";
            UIViewController *vc = [self topMostController];
            [self.docController presentOpenInMenuFromRect:CGRectMake(1, 1, 1, 1) inView:vc.view animated:YES];
        }
        else {
            NSLog(@"Instagram App not Found");
        }

    }

还有其他选择，以便可以在iOS的共享内容中添加文本。