ool _WebTryThreadLock(bool),

一般的问题是这样的

 

“bool _WebTryThreadLock(bool), 0xxxxxx: Tried to obtain the web lock from a thread other than the main thread or the web thread. This may be a result of calling to UIKit from a secondary thread. Crashing now...”

原因: update ui in background thread.

解决办法: update ui in main thread.

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