绝不应该触发嵌套优化.这可能是由于在NSISVariable委托回调内部发生的自动布局工作 [英] Nested optimization should never be triggered. This is probably due to autolayout work happening inside an NSISVariable delegate callback

问题描述

应用程序崩溃，日志向我显示了此消息:

App crashed and log gave me this message:

绝不应该触发嵌套优化.这可能是由于在NSISVariable委托回调中发生了自动布局工作，这是不允许的."

"Nested optimization should never be triggered. This is probably due to autolayout work happening inside an NSISVariable delegate callback, which is not allowed."

该如何解决?

推荐答案

认为我正在后台线程中更新UI.尝试放入: UI更新行旁边的if ([NSThread isMainThread]) { NSLog(@"isMainThread"); } else { NSLog(@"isNotMainThread"); }，以便在后台线程中找到UI更新.

Think I was updating UI in a background thread. Try putting: if ([NSThread isMainThread]) { NSLog(@"isMainThread"); } else { NSLog(@"isNotMainThread"); } next to UI updating lines, in order to find UI updates in background thread.

示例:

if ([NSThread isMainThread]) { NSLog(@"isMainThread"); } else { NSLog(@"isNotMainThread"); }
_MyLbl.text=@"some text";

如果isNotMainThread显示在日志中，则将两行替换为:

if isNotMainThread is shown in log, replace the two lines with:

dispatch_async(dispatch_get_main_queue(), ^{
   _MyLbl.text=@"some text";
});

不是一个真正的答案，更多的是提示.但我想比没有要好.

Not really an answer, more of a tip. But better than nothing I guess.

这篇关于绝不应该触发嵌套优化.这可能是由于在NSISVariable委托回调内部发生的自动布局工作的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！