UIActivityViewController on iPad

Question

我一直在使用下面的代码来显示UIActivityViewController，当我使用Xcode 6、Swift 1.2和iOS 8时，它工作得很好。然而，当我更新它时，它显示了UIActivityViewController，但是它是完全空白的，没有任何共享选项。你有什么意见建议？

if UIDevice.currentDevice().userInterfaceIdiom == .Pad {
        let textToShare = textViewOne.text

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

            let nav = UINavigationController(rootViewController: activityVC)
            nav.modalPresentationStyle = UIModalPresentationStyle.Popover
            let popover = nav.popoverPresentationController as UIPopoverPresentationController!

            popover.sourceView = self.view
            popover.sourceRect = sender.frame

            self.presentViewController(nav, animated: true, completion: nil)

    } else {
        let textToShare = textViewOne.text

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

        self.presentViewController(activityVC, animated: true, completion: nil)

    }

Answer 1

这个已经修好了。

let objectsToShare = [textToShare]
let activityVC = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil)
activityVC.title = "Share One"
activityVC.excludedActivityTypes = []            
activityVC.popoverPresentationController?.sourceView = self.view
activityVC.popoverPresentationController?.sourceRect = sender.frame
self.presentViewController(activityVC, animated: true, completion: nil)

迅速3.0版：

let objectsToShare = [textToShare]
let activityVC = UIActivityViewController(activityItems: objectsToShare, applicationActivities: nil)
activityVC.title = "Share One"
activityVC.excludedActivityTypes = []
        
activityVC.popoverPresentationController?.sourceView = self.view
activityVC.popoverPresentationController?.sourceRect = sender.frame

self.present(activityVC, animated: true, completion: nil)

Answer 2

我与SWIFT 5公司的上述建议斗争，因为：

activity.popoverPresentationController?.sourceRect = sender.frame

在某些情况下不工作，因为发送方在作用域上不可用。相反，尝试使用CGRECT设置，如下所示：

activityController.popoverPresentationController?.sourceRect = CGRect(x: self.view.bounds.midX, y: self.view.bounds.midY,width: 0,height: 0)

我希望这能帮到一些人。

Answer 3

Swift 4.0

    let shareText = "Hi"
    let activity = UIActivityViewController(activityItems: shareText, applicationActivities: nil)
    activity.excludedActivityTypes = []

    if UIDevice.current.userInterfaceIdiom == .pad {
        activity.popoverPresentationController?.sourceView = self.view
        activity.popoverPresentationController?.sourceRect = sender.frame
    }
    self.present(activity, animated: true, completion: nil)