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
Swift, iOS 9/10 (UIPopoverController弃用后)
let activityViewController = UIActivityViewController(activityItems: sharingItems, applicationActivities: nil)
if UIDevice.currentDevice().userInterfaceIdiom == .Pad {
if activityViewController.respondsToSelector(Selector("popoverPresentationController")) {
activityViewController.popoverPresentationController?.sourceView = self.view
}
}
self.presentViewController(activityViewController, animated: true, completion: nil)
SwiftUI版本
func presentActivityView(items: [Any]){
let activityController = UIActivityViewController(activityItems: items, applicationActivities: nil)
if UIDevice.current.userInterfaceIdiom == .pad{
activityController.popoverPresentationController?.sourceView = UIApplication.shared.windows.first
activityController.popoverPresentationController?.sourceRect = CGRect(x: UIScreen.main.bounds.width / 3, y: UIScreen.main.bounds.height / 1.5, width: 400, height: 400)
}
UIApplication.shared.windows.first?.rootViewController?.present(activityController, animated: true, completion: nil)
}
在swift 4下面的代码工作在iphone和ipad。
根据文档
对于给定的设备习惯用法，使用适当的方法来呈现和解散视图控制器是你的责任。在iPad上，你必须在弹出窗口中显示视图控制器。在其他设备上，你必须以模态方式呈现它。
let activityViewController = UIActivityViewController(activityItems: activityitems, applicationActivities: nil)
if UIDevice.current.userInterfaceIdiom == .pad {
if activityViewController.responds(to: #selector(getter: UIViewController.popoverPresentationController)) {
activityViewController.popoverPresentationController?.sourceView = self.view
}
}
self.present(activityViewController, animated: true, completion: nil)
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。
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);
