UIAlertController：Attempting to load the view of a view controller while it is deallocating is not a
2018-01-12 16:38
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上网搜，各种方法都试了，没用，最后给dispatch_after延迟了1s，就能显示出来了，不知道是什么原因，大家知道的话给回复个，谢谢了！
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