iOS Whose view is not in the window hierarchy 错误的解决办法
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在 IOS 开发中碰到 whose view is not in the window hierarchy 的错误,该错误简单的说,是由于 "ViewController" 还没有被加载,就调用该 ViewController 或者 ViewController 内的方法时,就会报这个错误。
解决办法:
该错误一般是由于在 viewDidLoad 里面调用引起的,解决办法是转移到 viewDidAppear 方法里面。
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