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
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)
}
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);
迅速:
let activityViewController = UIActivityViewController(activityItems: sharingItems, applicationActivities: nil)
//if iPhone
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.Phone) {
self.presentViewController(activityViewController, animated: true, completion: nil)
} else { //if iPad
// Change Rect to position Popover
var popoverCntlr = UIPopoverController(contentViewController: activityViewController)
popoverCntlr.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
}
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)
}
我最近在Swift 2.0中遇到了这个确切的问题(最初的问题)，其中UIActivityViewController在iphone上工作得很好，但在模拟ipad时导致了崩溃。
我只是想在这里补充一点，至少在Swift 2.0中，你不需要if语句。你可以让popoverPresentationController是可选的。
作为一个快速题外话，接受的答案似乎是说，你可以只有一个sourceView，只是一个sourceRect，或只是一个barButtonItem，但根据苹果的文档UIPopoverPresentationController你需要以下之一:
栏按钮项
源视图和源矩形
我正在工作的特定示例如下，在那里我创建了一个函数，接受一个UIView(为sourceView和sourceRect)和字符串(UIActivityViewController的唯一的activityItem)。
func presentActivityViewController(sourceView: UIView, activityItem: String ) {
let activityViewController = UIActivityViewController(activityItems: [activityItem], applicationActivities: [])
activityViewController.popoverPresentationController?.sourceView = sourceView
activityViewController.popoverPresentationController?.sourceRect = sourceView.bounds
self.presentViewController(activityViewController, animated: true, completion: nil)
}
这段代码适用于iPhone和iPad(我认为甚至是tvOS)——如果设备不支持popoverPresentationController，那么提到它的两行代码基本上会被忽略。
有点好，所有你需要做的，使它工作的ipad只是添加两行代码，或者只是一个如果你使用barButtonItem!
对于Swift 2.0。我发现，如果你试图将弹出窗口锚定在iPad上的共享按钮上，这种方法是有效的。这假设您已经在工具栏中为共享按钮创建了一个出口。
func share(sender: AnyObject) {
let firstActivityItem = "test"
let activityViewController = UIActivityViewController(activityItems: [firstActivityItem], applicationActivities: nil)
if UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiom.Phone {
self.presentViewController(activityViewController, animated: true, completion: nil)
}
else {
if activityViewController.respondsToSelector("popoverPresentationController") {
activityViewController.popoverPresentationController!.barButtonItem = sender as? UIBarButtonItem
self.presentViewController(activityViewController, animated: true, completion: nil)
}
}
}
我看到很多人在使用Swift代码时对iPhone/iPad等进行硬编码。
这是不需要的，你必须使用语言功能。下面的代码假设你将使用一个UIBarButtonItem，并将在iPhone和iPad上工作。
@IBAction func share(sender: AnyObject) {
let vc = UIActivityViewController(activityItems: ["hello"], applicationActivities: nil)
vc.popoverPresentationController?.barButtonItem = sender as? UIBarButtonItem
self.presentViewController(vc, animated: true, completion: nil)
}
注意这里没有If语句或其他疯狂的东西。可选的展开在iPhone上将是nil，所以行vc。popoverpresentationcontroller ?在iphone上没有任何功能。
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)
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)
如果你在点击UIBarButtonItem时显示UIActivityViewController，请使用以下代码:
activityViewController.popoverPresentationController?.barButtonItem = sender
否则，如果你使用另一个控件，例如UIButton，使用以下代码:
activityViewController.popoverPresentationController?.sourceView = sender
activityViewController.popoverPresentationController?.sourceRect = sender.bounds
从文档到UIPopoverPresentationController:
var barButtonItem: UIBarButtonItem? { get set }
为此属性分配一个值，以将弹出窗口锚定到指定的栏按钮项。显示时，弹出窗口的箭头指向指定的项。或者，您可以使用sourceView和sourceRect属性为弹出窗口指定锚点位置。
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。
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)
}
只是作为参考。
我分享以下代码，这一个使用Swift 5.0。此外，它还避免了弃用的窗口。
UIApplication.shared.windows.first ? .rootViewController !。present(actiycontroller, animated: true, completion: nil)
代码片段如下:
let activityController = UIActivityViewController(activityItems: [activityItem], applicationActivities: nil)
let scenes = UIApplication.shared.connectedScenes
let windowScene = scenes.first as? UIWindowScene
let window = windowScene?.windows.first
if UIDevice.current.userInterfaceIdiom == .pad{
activityController.popoverPresentationController?.sourceView = window
activityController.popoverPresentationController?.sourceRect = CGRect(x: UIScreen.main.bounds.width / 3, y: UIScreen.main.bounds.height / 1.5, width: 400, height: 400)
}
window?.rootViewController!.present(activityController, animated: true)
它已经在iPhone和iPad上进行了测试。
希望它能帮助到一些人。
干杯!
