jpegData报错

报错'jpegData(compressionQuality:)' has been renamed to 'UIImageJPEGRepresentation(::)'

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明明jump to definition时候是能看到方法确实是jpegData, 却报错告知方法未实现。

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解决方法如:

在Build Settings中找到如图

修改前默认选择为Swift 4