Swift UIActivityViewController仅为FB、Twitter和邮件共享图像，而不共享消息

因此，我使用以下代码获取所有UIActivityType的文本

        @objc func activityViewControllerPlaceholderItem(activityViewController: UIActivityViewController) -> AnyObject {
        return ""
    }

    @objc func activityViewController(activityViewController: UIActivityViewController, itemForActivityType activityType: String) -> AnyObject? {
        if activityType == UIActivityTypeMessage {
            return "String for message"
        } else if activityType == UIActivityTypeMail {
            return "String for mail"
        } else if activityType == UIActivityTypePostToTwitter {
            return "String for twitter"
        } else if activityType == UIActivityTypePostToFacebook {
            return "String for facebook"
        }
        return nil
    }

    func activityViewController(activityViewController: UIActivityViewController, subjectForActivityType activityType: String?) -> String {
        if activityType == UIActivityTypeMessage {
            return "Subject for message"
        } else if activityType == UIActivityTypeMail {
            return "Subject for mail"
        } else if activityType == UIActivityTypePostToTwitter {
            return "Subject for twitter"
        } else if activityType == UIActivityTypePostToFacebook {
            return "Subject for facebook"
        }
        return ""
    }   
}

这就是有趣的部分发生的地方。我将URL中的图像添加到objectsToShare数组中。如果我希望为所有人显示图像，这将很好，但我的问题是我不希望为

UIActivityTypeMessage

显示图像。其中应该只包含文本，而不包含图像。我该怎么做

    // Load image to share
let articleURL = URLBuilder.sharedInstance.addOnlyHttps((promo?.imageUrl)!)
KingfisherManager.sharedManager.cache.retrieveImageForKey(articleURL, options: nil) { (image, _) -> () in
    if image != nil {
        objectsToShare.append(image!)
        self.openShareViewController(objectsToShare, sender: sender )
    } else {
        KingfisherManager.sharedManager.downloader.downloadImageWithURL(NSURL(string: articleURL)!, progressBlock: nil, completionHandler: { (image, error, imageURL, originalData) in
            if image != nil {
                KingfisherManager.sharedManager.cache.storeImage(image!, forKey: articleURL)
                objectsToShare.append(image!)
                self.openShareViewController(objectsToShare, sender: sender)
            }
        })

    }
}

要为不同的ActivityItem设置不同的内容，最好使用UIActivityItemSource。有关ActivityItemSource的更多信息，请查看此项

您已经在遵循相同的方法，因此很容易找到问题的解决方案

创建两个UIActivityItemSource类，如下所示

SourceOne:

class MyStringItemSourceOne: NSObject, UIActivityItemSource {
@objc func activityViewControllerPlaceholderItem(activityViewController: UIActivityViewController) -> AnyObject {
   return ""
}

@objc func activityViewController(activityViewController: UIActivityViewController, itemForActivityType activityType: String) -> AnyObject? {

   if activityType == UIActivityTypeMessage {
     return "String for message"
   } else if activityType == UIActivityTypeMail {
    return "String for mail"
   } else if activityType == UIActivityTypePostToTwitter {
    return "String for twitter"
   } else if activityType == UIActivityTypePostToFacebook {
    return "String for facebook"
   }
   return nil
   }
}

通过添加上述代码，我们设置了要共享的字符串内容

我们的要求是为所有activityType设置映像，除了UIActivityTypeMessage，以便我们将创建另一个UIActivityItemSource

SourceTwo

 class MyStringItemSourceTwo: NSObject, UIActivityItemSource {
 @objc func activityViewControllerPlaceholderItem(activityViewController: UIActivityViewController) -> AnyObject {
    return ""
  } 

 @objc func activityViewController(activityViewController:  UIActivityViewController, itemForActivityType activityType: String) -> AnyObject? {

    let Image: UIImage = UIImage(data: NSData(contentsOfURL: NSURL(string: "http://i.telegraph.co.uk/multimedia/archive/03589/Wellcome_Image_Awa_3589699k.jpg")!)!)!
    if activityType == UIActivityTypeMessage {
       return nil
    } else if activityType == UIActivityTypeMail {
    //return "String for mail"
       return Image
    } else if activityType == UIActivityTypePostToTwitter {
       return Image
    } else if activityType == UIActivityTypePostToFacebook {
       return Image
    }
    return nil
   }

}

接下来，将上述两个源添加到UIActivityViewController中，作为activityitems，如下所示

@IBAction func Test(sender: AnyObject) {

   let activityVC = UIActivityViewController(activityItems: [MyStringItemSourceOne(),MyStringItemSourceTwo()] as [AnyObject], applicationActivities: nil)
   //NOTE: Instead of using rootviewcontroller go with your own way.
   if let window = (UIApplication.sharedApplication().delegate as? AppDelegate)?.window
   {
      window.rootViewController?.presentViewController(activityVC, animated: true, completion: nil)
   }
}

现在一切都会按照你的要求进行

---

我需要一些澄清，您必须通过UIActivityViewcontroller共享图像和文本。例外UIActivityTypeMessage应该只有文本而不是图像。对吗？@Gokulvivid在好的位置上是正确的先生：D这确实是我需要的检查我的答案它可能完全满足您的需要。@Gokulvivid您的答案正是我需要的，谢谢！很有魅力