iOS “[App] if we're in the real pre-commit handler we can't actually add any new fences due

最近运行APP,发现了这个问题,本着宁可错看,不可放过的原则,上*学习了一下:

链接:http://*.com/questions/38458170/ios-10-app-if-were-in-the-real-pre-commit-handler-we-cant-actually-add-any

----- “[App] if we're in the real pre-commit handler we can't actually add any new fences due ”

翻译:

-----“[应用]如果我们在真实预提交处理我们不能添加任何新的围栏,由于CA限购”

才知道这个问题其实是xcode 编译器设置的问题,其实并不影响app使用:

"-------it comes from +[UIWindow _synchronizeDrawingAcrossProcessesOverPort:withPreCommitHandler:] via os_log API. It doesn't depend from another components/frameworks that you are using(only from UIKit) - it reproduces in clean single view application project on changing interface orientation.
This method consists from 2 parts:
adding passed precommit handler to list of handlers;
do some work, that depends on current finite state machine state.
When second part fails (looks like prohibited transition), it prints message above to error log. However, I think that this problem is not fatal: there are 2 additional assert cases in this method, that will lead to crash in debug.---"

翻译:

----它来自+ [ UIWindow _synchronizedrawingacrossprocessesoverport:withprecommithandler:]通过os_log API。它不取决于另一个组件/框架,您使用的是(从UIKit)-再现清洁单视图应用程序项目改变界面取向。
该方法由2部分组成:
并通过预提交处理程序处理程序列表;
做一些工作,这取决于当前的有限状态机状态。
当第二部分失败(看起来像被禁止的过渡)时,它将上面的消息打印到错误日志上。然而,我认为这个问题不是致命的:有2个额外的断言在这种方法的情况下,这将导致崩溃在调试

----------------------------华丽的分割线-------------------------------------

解决方法:

in your Xcode:

  • Click on your active scheme name right next to the Stop button
  • Click on Edit Scheme....
  • in Run (Debug) select the Arguments tab
  • in Environment Variables click +
  • add variable: OS_ACTIVITY_MODE = disable

其实这好像是老版xcode 的,

其实点击Xcode的product就可以找到(OS_ACTIVITY_MODE是name,disable 是值)

iOS “[App] if we're in the real pre-commit handler we can't actually add any new fences due

(特别注意:标注为disable失效后,程序可能会运行失败!)

感谢分享, 本人到没有遇到过。  大家遇到的可以借鉴这个  原文  http://blog.csdn.net/ws1836300/article/details/52957056

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