如何添加此共享按钮？迅速的iOS8

该方式

UIActivityViewController

@IBAction func shareSheet(sender: AnyObject) {    let firstActivityItem = "Text you want"    let secondActivityItem : NSURL = NSURL(string: "http//:urlyouwant")!    // If you want to put an image    let image : UIImage = UIImage(named: "image.jpg")!    let activityViewController : UIActivityViewController = UIActivityViewController(        activityItems: [firstActivityItem, secondActivityItem, image], applicationActivities: nil)    // This lines is for the popover you need to show in iPad     activityViewController.popoverPresentationController?.sourceView = (sender as! UIButton)    // This line remove the arrow of the popover to show in iPad    activityViewController.popoverPresentationController?.permittedArrowDirections = UIPopoverArrowDirection.allZeros    activityViewController.popoverPresentationController?.sourceRect = CGRect(x: 150, y: 150, width: 0, height: 0)    // Anything you want to exclude    activityViewController.excludedActivityTypes = [        UIActivityTypePostToWeibo,        UIActivityTypePrint,        UIActivityTypeAssignToContact,        UIActivityTypeSaveToCameraRoll,        UIActivityTypeAddToReadingList,        UIActivityTypePostToFlickr,        UIActivityTypePostToVimeo,        UIActivityTypePostToTencentWeibo    ]    self.presentViewController(activityViewController, animated: true, completion: nil)}

上面的代码适用于iPhone和iPad，因为

popoverPresentationController

在使用的情况下，

UIBarButtonItem

activityViewController.popoverPresentationController?.sourceView = (sender as! UIButton)

有了这个：

activityViewController.popoverPresentationController?.barButtonItem = (sender as! UIBarButtonItem)

希望对您有所帮助。