swift – 当调用UIActivityViewController时,IOS 8 iPad应用程序

发布时间：2020-12-14 05:30:19 所属栏目：百科来源：网络整理

导读：当在这个应用程序中在iPhone上调用UIActivityViewController时,它可以很好地工作,但是当在iPad上调用时,应用程序崩溃了.以下是我使用的代码： func shareButtonPress() { //when the share button is pressed,default share phrase is added,cropped image o

当在这个应用程序中在iPhone上调用UIActivityViewController时,它可以很好地工作,但是当在iPad上调用时,应用程序崩溃了.以下是我使用的代码：

func shareButtonPress() {

    //when the share button is pressed,default share phrase is added,cropped image of highscore is added

    var sharingItems = [AnyObject]()

    var shareButtonHighscore = NSUserDefaults.standardUserDefaults().objectForKey("highscore") as Int!

    sharingItems.append("Just hit (shareButtonHighscore)! Beat it! #Swath")

    UIGraphicsBeginImageContextWithOptions(UIScreen.mainScreen().bounds.size,false,0);
    self.view.drawViewHierarchyInRect(view.bounds,afterScreenUpdates: true)
    var image:UIImage = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    sharingItems.append(image)

    let activityViewController = UIActivityViewController(activityItems: sharingItems,applicationActivities: nil)

    var barButtonItem: UIBarButtonItem! = UIBarButtonItem()

    activityViewController.excludedActivityTypes = [UIActivityTypeCopyToPasteboard,UIActivityTypeAirDrop,UIActivityTypeAddToReadingList,UIActivityTypeAssignToContact,UIActivityTypePostToTencentWeibo,UIActivityTypePostToVimeo,UIActivityTypePrint,UIActivityTypeSaveToCameraRoll,UIActivityTypePostToWeibo]

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

}

正如您所看到的,我正在Swift中编程,在SpriteKit框架中,我不明白为什么应用程序崩溃.

我收到此错误：

Terminating app due to uncaught exception 'NSGenericException',reason: 'UIPopoverPresentationController (<_UIAlertControllerActionSheetRegularPresentationController: 0x7fc7a874bd90>) should have a non-nil sourceView or barButtonItem set before the presentation occurs.'

我该怎么做才能解决这个问题？

在演示UIActivityViewController之前,添加以下代码行：

activityViewController.popoverPresentationController?.sourceView = self.view

这样,视图控制器就知道要在哪个GameViewController框架中出现.

（编辑：李大同）

【声明】本站内容均来自网络，其相关言论仅代表作者个人观点，不代表本站立场。若无意侵犯到您的权利，请及时与联系站长删除相关内容!