LaunchServices：invalidationHandler被调用 - iOS 8共享表 [英] LaunchServices: invalidationHandler called - iOS 8 share sheet

问题描述

在我使用 SLComposeViewController 打开Twitter或Facebook共享表时，在日志中看到此错误消息，尽管不一致。我没有使用任何新的iOS 8 API，只测试iOS 8上的现有代码。我看到其他人遇到了这个问题，甚至在使用Cocoa Touch SDK中的其他模态视图控制器时也发生了崩溃。

Seeing this error message in the logs, though not consistently, around the time that I use SLComposeViewController to open a Twitter or Facebook share sheet. I am not using any new iOS 8 API, just testing existing code on iOS 8. I see others have had this problem and even seen crashes when using other modal view controllers from the Cocoa Touch SDK.

LaunchServices：invalidationHandler名为

LaunchServices: invalidationHandler called

<$ c是否有新的预防措施iOS 8中的$ c> SLComposeViewController 和 UIActivityViewController ？还需要考虑其他事项吗？

Are there new precautions to take with SLComposeViewController and UIActivityViewController in iOS 8? Something else to consider?

推荐答案

在您展示活动视图控制器后添加此代码：

Add this code after you present your activity view controller:

if ([activityVC respondsToSelector:@selector(popoverPresentationController)])
{
    // iOS 8+
    UIPopoverPresentationController *presentationController = [activityVC popoverPresentationController];

    presentationController.sourceView = sender; // if button or change to self.view.
}

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