Undefinedsymbolsforarchitecturei386:"_kUTTypeImage",referencedfrom:-[ViewControllerreceiveNotification:]inViewController.old:symbol(s)notfoundforarchitecturei386clang:error:linkercommandfailedwithexitcode1(use-vtoseeinvocation)我正在向我的应用程序添加一个UIImagePickerController，当我进行编译时，出现了上述错误。我在SO上找到了解决方案:Sy

我在转换CFString时出错。错误信息是:Cannotassignavalueoftype'[CFString]'toavalueoftype'[String].如何修复？picker.sourceType=UIImagePickerControllerSourceType.Camerapicker.allowsEditing=falsepicker.mediaTypes=[kUTTypeImage]//ErrorMessage:Cannotassignavalueoftype'[CFString]'toavalueoftype'[String]'picker.delegate=se