相关疑难解决方法(0)

在iOS8上,我正在使用UIActivityViewController与Facebook/Twitter等共享UIImage.它似乎工作正常,但今天它在我的iPad上运行代码时突然崩溃了.但是,它仍然可以在模拟器中按预期工作.

我的代码:

UIActivityViewController *controller =
[[UIActivityViewController alloc]
 initWithActivityItems:@[text, url, myImage]
 applicationActivities:nil];

[self presentViewController:controller animated:YES completion:nil];

崩溃后,Xcode吐出:

发现的扩展名:{({id = com.apple.share.Facebook.post},{id = com.apple.share.Twitter.post},{id = com.apple.share.TencentWeibo.post},{id = com.apple.share.SinaWeibo.post})} for attributes:{NSExtensionActivationRule = {extensionItems =({attachments =({registeredTypeIdentifiers =("public.image");},{registeredTypeIdentifiers =("public.plain-text" );},{registeredTypeIdentifiers =("public.url");});}); }; NSExtensionPointName =("com.apple.share-services","com.apple.ui-services","com.apple.services"); 2014-08-07 21:38:59.208 collageTest [279:11021] LaunchServices:invalidationHandler被称为2014-08-07 21:38:59.212 collageTest [279:11016]发现的扩展:{({id = com.apple.share .Flickr.post},{id = com.apple.mobileslideshow.StreamShareService},{id = com.apple.share.Twitter.post},{id = com.apple.share.Facebook.post},{id = com .apple.share.Vimeo.post},{id = com.apple.share.SinaWeibo.post},{id = com.apple.share.TencentWeibo.post})} for attributes:{NSExtensionPointName ="com.apple.共享服务"; 2014-08-07 21:38:59.216 collageTest [279:11021] LaunchServices:invalidationHandler被调用

我已经在这里和这里查看了相关的问题,并且我已经实现了建议的答案但无济于事.

我在UIToolbar上有一个UIBarButtonItem,发送操作的连接到btnTBAction_touch:

在ViewController的类头中,我有:

@property (nonatomic, strong) UIActivityViewController *activityViewController;

类实现中的相关方法:

- (IBAction)btnTBAction_touch:(id)sender {
    NSString *string = @"Some string";
    NSURL *url = [[NSURL alloc] initWithString:@"http://www.google.com"];
    UIImage *image = [UIImage imageNamed:@"default.png"];
    self.activityViewController = [[UIActivityViewController alloc] 
        initWithActivityItems:@[string, url, image] applicationActivities:nil];

    if ([self.activityViewController respondsToSelector:@selector(popoverPresentationController)])
    {
        UIPopoverPresentationController *presentationController = [self.activityViewController
            popoverPresentationController];
        presentationController.sourceView = sender;
    }

    [self presentViewController:self.activityViewController animated:YES completion:nil];
}

当我触摸调用上述方法的按钮时,在物理设备上以调试模式运行时,我在调试控制台中获得以下内容

2014-09-19 09:43:31.635 TestApp[1878:237873] LaunchServices: invalidationHandler called
2014-09-19 09:43:31.644 TestApp[1878:237814] LaunchServices: invalidationHandler called

但是,与相关问题不同,我的应用程序在发生这种情况时不会崩溃,应用程序继续正常运行并且UIActivityViewController正确显示...但我宁愿修复错误而不是说它已经足够好了.

另外,我尝试使用以下方法对上述方法进行了一些排列:

presentationController.sourceView = self.view;

presentationController.sourceRect = self.view.frame;

这些都没有帮助解决问题. …

我正在玩Airdrop的想法.Apple运行示例代码时出错:

https://developer.apple.com/library/ios/samplecode/sc2273/Introduction/Intro.html

错误消息是:

LaunchServices: invalidationHandler called

问题显然是由UIActivityViewController.相关的代码是下#pragma mark - Actions的这个文件,如果你可以去看看.

它仅在设备(iPhone和iPad)上运行时显示错误消息.如果在模拟器(iPhone和iPad)上运行,这一切都很好.这是什么原因？有关如何解决它的任何想法？它可能是一个错误吗？

以下提出了类似的问题,其中任何一个似乎都无法回答这个问题:

LaunchServices:invalidationHandler被调用 - iOS 8共享表

通过UIActivityViewController分享到Twitter/Facebook等导致崩溃

目前UIActivityViewController- LaunchServices:invalidationHandler被调用