Question

我有按钮需要共享屏幕截图并将其分享到Facebook .....等等。

分享按钮：

ShareButton = UIButton.init(frame: CGRectMake(self.view!.frame.size.width/2 - 80,self.view!.frame.size.height/2 + 140 , 163, 54))

            ShareButton.setImage(UIImage(named: "Share-Button.png"), forState: UIControlState.Normal)

            ShareButton.addTarget(self, action: "shareButtonClicked:", forControlEvents: .TouchUpInside)

            self.view!.addSubview(ShareButton)

ShareButton func：

    func shareButtonClicked(sender: UIButton!) {

            UIGraphicsBeginImageContextWithOptions(view!.frame.size, false, 0.0)
            view!.drawViewHierarchyInRect(view!.frame, afterScreenUpdates: true)
            let image = UIGraphicsGetImageFromCurrentImageContext()
            UIGraphicsEndImageContext();

            UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)

            let activityVC = UIActivityViewController(activityItems: [image], applicationActivities: nil)

            let vc = self.view?.window?.rootViewController

            //New Excluded Activities Code
            if #available(iOS 9.0, *) {
                activityVC.excludedActivityTypes = [UIActivityTypeAirDrop, UIActivityTypeAddToReadingList, UIActivityTypeAssignToContact, UIActivityTypeCopyToPasteboard, UIActivityTypeMail, UIActivityTypeMessage, UIActivityTypeOpenInIBooks, UIActivityTypePostToTencentWeibo, UIActivityTypePostToVimeo, UIActivityTypePostToWeibo, UIActivityTypePrint]
            } else {
                // Fallback on earlier versions
                activityVC.excludedActivityTypes = [UIActivityTypeAirDrop, UIActivityTypeAddToReadingList, UIActivityTypeAssignToContact, UIActivityTypeCopyToPasteboard, UIActivityTypeMail, UIActivityTypeMessage, UIActivityTypePostToTencentWeibo, UIActivityTypePostToVimeo, UIActivityTypePostToWeibo, UIActivityTypePrint ]
            }

 activityVC.popoverPresentationController?.sourceView = vc?.view
 activityVC.popoverPresentationController?.sourceRect = ShareButton.frame
 vc?.presentViewController(activityVC, animated: true, completion: nil)

        }

当我按下按钮时，我正在收到消息控制台：

＆＃34;其视图不在窗口层次结构中！＆＃34;

并没有注意到。

工作

截图保存在图库

无效

显示UIActivityViewContrller并让我选择分享：Facebook ......等等。

Answer 1

几天后，我能够自己解决问题。

正确答案：

分享按钮：

ShareButton = UIButton.init(frame: CGRectMake(self.view!.frame.size.width/2 - 80,self.view!.frame.size.height/2 + 140 , 163, 54))

                ShareButton.setImage(UIImage(named: "Share-Button.png"), forState: UIControlState.Normal)

                ShareButton.addTarget(self, action: "pressedShareButton:", forControlEvents: .TouchUpInside)

    self.view!.addSubview(ShareButton)

ShareButton func：

    func pressedShareButton(sender: UIButton!) {

            UIGraphicsBeginImageContextWithOptions(view!.frame.size, false, 0.0)
            view!.drawViewHierarchyInRect(view!.frame, afterScreenUpdates: true)
            let image = UIGraphicsGetImageFromCurrentImageContext()
            UIGraphicsEndImageContext();

            UIImageWriteToSavedPhotosAlbum(image, nil, nil, nil)

            let activityVC = UIActivityViewController(activityItems: [image], applicationActivities: nil)

            //New Excluded Activities Code
            if #available(iOS 9.0, *) {
                activityVC.excludedActivityTypes = [UIActivityTypeAirDrop, UIActivityTypeAddToReadingList, UIActivityTypeAssignToContact, UIActivityTypeCopyToPasteboard, UIActivityTypeMail, UIActivityTypeMessage, UIActivityTypeOpenInIBooks, UIActivityTypePostToTencentWeibo, UIActivityTypePostToVimeo, UIActivityTypePostToWeibo, UIActivityTypePrint]
            } else {
                // Fallback on earlier versions
                activityVC.excludedActivityTypes = [UIActivityTypeAirDrop, UIActivityTypeAddToReadingList, UIActivityTypeAssignToContact, UIActivityTypeCopyToPasteboard, UIActivityTypeMail, UIActivityTypeMessage, UIActivityTypePostToTencentWeibo, UIActivityTypePostToVimeo, UIActivityTypePostToWeibo, UIActivityTypePrint ]
            }

            activityVC.popoverPresentationController?.sourceView = view
            activityVC.popoverPresentationController?.sourceRect = ShareButton.frame
            presentViewController(activityVC, animated: true, completion: nil)


            print("Share!")    
 }

它完美无缺！祝大家好运！

Answer 2

尝试设置activityController的来源：

    activityVC.popoverPresentationController?.sourceView = vc?.view
    activityVC.popoverPresentationController?.sourceRect = ShareButton.frame

如何与UIActivityViewController共享图像

2 个答案: