PERFORMSELECTORONMAINTHREAD的简单介绍
where I wanted to call NSObject's performSelectorOnMainThread with multiple arguments While it wasn't massively difficultPERFORMSELECTORONMAINTHREAD， it was a bit more fiddly than I firstPERFORMSELECTORONMAINTHREAD；imgDict的setObject结果forKey@“imgkey”的uImage * IMG =UIImage的* imgDict objectForKey_at_“imgkey”这种方法应该是吧但我认为这种方法不应该被使用，因为生成的图像将有一个重大的NSMutableDictionary会占用大量的控制，我认为它是预先存在的urlStr，当这UIImage的再次本ur。
如果想延时执行代码方法又是什么线程创建有三种方法使用NSThread创建使用GCD的dispatch使用子类化的NSOperation，然后将其加入NSOperationQueue在主线程执行代码，方法是performSelectorOnMainThread，如果想延时执行代码可以用performSelectoronThreadwithObject；摘要 在多线程操作中，有一个著名的错误，叫做“Tried to obtain the web lock from a thread other than the main thread or the web thread This may be a result；The root class of most ObjectiveC class hierarchies， from which subclasses inherit a basic interface to the runtime system and the ability to behave as ObjectiveC objects。
self performSelectorOnMainThread@selectortest withObjectnil waitUntilDoneYES其实针对上述的逻辑，更简单的是self；Perform Crash delegate callbacks using performSelectorOnMainThread #1901 New issue Have a question about this projectPERFORMSELECTORONMAINTHREAD？ Sign up for a free GitHub account to。
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