ios - iPad 上的 UIActivityViewController

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 时它工作正常。但是当我更新它时它显示 UIActivityViewController 但它是完全空白的，没有任何共享选项。你有什么建议吗？

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

这已经解决了。

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)

在 swift 3.0 中:

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)