swift - 使用未解析的标识符 'kUTTypePDF'

Question

如何在 Swift 中使用文件类型

根据 https://developer.apple.com/documentation/coreservices/kuttypepdf

这样应该没问题

UIPasteboard.general.setData(Data(contentsOf: URL(fileURLWithPath: path)), forPasteboardType: kUTTypePDF)

它还是会叫

Use of unresolved identifier 'kUTTypePDF'

Answer 1

如“Robert Dresler”所说，您需要导入 import MobileCoreServices

但是在 import MobileCoreServices 之后你会看到下面的错误

'CFString' is not implicitly convertible to 'String'; did you mean to use 'as' to explicitly convert?

所以你需要做 kUTTypePDF as String

之后您可能会在 Data(contentsOf: URL(fileURLWithPath: path) 中看到错误，如下所示，

Call can throw, but it is not marked with 'try' and the error is not handled

所以你需要使用try和catch。

您的最终代码如下所示。

do{

        let data = try Data(contentsOf: URL(fileURLWithPath: path))

        UIPasteboard.general.setData(data, forPasteboardType: kUTTypePDF as String)

    }catch{

        print("error :\(error)")
    }