我目前正在用Xcode 6 (Beta 6)测试我的应用程序。UIActivityViewController在iPhone设备和模拟器上工作得很好，但在iPad模拟器和设备(iOS 8)上崩溃
Terminating app due to uncaught exception 'NSGenericException',
reason: 'UIPopoverPresentationController
(<_UIAlertControllerActionSheetRegularPresentationController: 0x7fc7a874bd90>)
should have a non-nil sourceView or barButtonItem set before the presentation occurs.
我使用以下代码用于iPhone和iPad的iOS 7以及iOS 8
NSData *myData = [NSData dataWithContentsOfFile:_filename];
NSArray *activityItems = [NSArray arrayWithObjects:myData, nil];
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:nil applicationActivities:nil];
activityViewController.excludedActivityTypes = @[UIActivityTypeCopyToPasteboard];
[self presentViewController:activityViewController animated:YES completion:nil];
我得到一个类似的崩溃在我的另一个应用程序以及。你能引导我吗?ios8中的UIActivityViewController有什么变化吗?我查过了，但在这上面什么也没找到
使用Xamarin.iOS解决方案。
在我的示例中，我正在进行屏幕捕获，生成图像，并允许用户共享图像。iPad上的弹出窗口位于屏幕中间。
var activityItems = new NSObject[] { image };
var excludedActivityTypes = new NSString[] {
UIActivityType.PostToWeibo,
UIActivityType.CopyToPasteboard,
UIActivityType.AddToReadingList,
UIActivityType.AssignToContact,
UIActivityType.Print,
};
var activityViewController = new UIActivityViewController(activityItems, null);
//set subject line if email is used
var subject = new NSString("subject");
activityViewController.SetValueForKey(NSObject.FromObject("Goal Length"), subject);
activityViewController.ExcludedActivityTypes = excludedActivityTypes;
//configure for iPad, note if you do not your app will not pass app store review
if(null != activityViewController.PopoverPresentationController)
{
activityViewController.PopoverPresentationController.SourceView = this.View;
var frame = UIScreen.MainScreen.Bounds;
frame.Height /= 2;
activityViewController.PopoverPresentationController.SourceRect = frame;
}
this.PresentViewController(activityViewController, true, null);
修复了Swift 2.0
if UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.Phone {
self.presentViewController(activityVC, animated: true, completion: nil)
}
else {
let popup: UIPopoverController = UIPopoverController(contentViewController: activityVC)
popup.presentPopoverFromRect(CGRectMake(self.view.frame.size.width / 2, self.view.frame.size.height / 4, 0, 0), inView: self.view, permittedArrowDirections: UIPopoverArrowDirection.Any, animated: true)
}
在Swift修复这个iPad，最好的方法是这样做，我发现。
let things = ["Things to share"]
let avc = UIActivityViewController(activityItems:things, applicationActivities:nil)
avc.setValue("Subject title", forKey: "subject")
avc.completionWithItemsHandler = {
(s: String!, ok: Bool, items: [AnyObject]!, err:NSError!) -> Void in
}
self.presentViewController(avc, animated:true, completion:nil)
if let pop = avc.popoverPresentationController {
let v = sender as! UIView // sender would be the button view tapped, but could be any view
pop.sourceView = v
pop.sourceRect = v.bounds
}
我使用Swift 5。
当我在iPad上的应用程序中点击“分享按钮”时，我也遇到了同样的问题。找到了这个解。
步骤1:将“view”对象(在对象库中搜索“UIView”)添加到Main.storyboard。
步骤2:在ViewController.swift中创建一个@IBOutlet并分配任意名称(例如:view1)
步骤3:添加上述名称(例如:view1)作为sourceView。这是我的“分享按钮”动作。
@IBAction func Share(_ sender: Any) {
let activityVC = UIActivityViewController(activityItems: ["www.google.com"], applicationActivities: nil)
activityVC.popoverPresentationController?.sourceView = view1
self.present(activityVC, animated: true, completion: nil)
}
我对swift很陌生，在这个问题上耽搁了一个星期。希望这能帮助到一些人。分享这个解。
同样的问题也出现在我的项目中，然后我找到了解决方案，在iPad中打开UIActivityViewController，我们必须使用UIPopoverController
下面是在iPhone和iPad上使用它的代码:
//to attach the image and text with sharing
UIImage *image=[UIImage imageNamed:@"giraffe.png"];
NSString *str=@"Image form My app";
NSArray *postItems=@[str,image];
UIActivityViewController *controller = [[UIActivityViewController alloc] initWithActivityItems:postItems applicationActivities:nil];
//if iPhone
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {
[self presentViewController:controller animated:YES completion:nil];
}
//if iPad
else {
// Change Rect to position Popover
UIPopoverController *popup = [[UIPopoverController alloc] initWithContentViewController:controller];
[popup presentPopoverFromRect:CGRectMake(self.view.frame.size.width/2, self.view.frame.size.height/4, 0, 0)inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
对于swift 4.2 / swift 5
func openShareDilog() {
let text = "share text will goes here"
// set up activity view controller
let textToShare = [text]
let activityViewController = UIActivityViewController(activityItems: textToShare, applicationActivities: nil)
activityViewController.excludedActivityTypes = [.airDrop]
if let popoverController = activityViewController.popoverPresentationController {
popoverController.sourceRect = CGRect(x: UIScreen.main.bounds.width / 2, y: UIScreen.main.bounds.height / 2, width: 0, height: 0)
popoverController.sourceView = self.view
popoverController.permittedArrowDirections = UIPopoverArrowDirection(rawValue: 0)
}
self.present(activityViewController, animated: true, completion: nil)
}
