如何使用 base64 字符串制作 PDF 文件?迅速

问题描述

我正在寻找一种在我的项目目录中保存 PDF 文件的方法，我已经从 Web 服务收到了一个 base 64 pdf 字符串.我是否必须将其转换为 NSData 或类似的东西?

I'm looking for a way to save a PDF file on my project directory, I've received a base 64 pdf string from a Web Service yet. Do I have to convert it to NSData or something like that?

我是 Swift 编码的新手，但我可以按照您的指示进行操作.

I'm new at coding in Swift but I can follow your instructions.

我希望你能帮助我.谢谢

I hope you can help me. Thanks

推荐答案

是的，你必须将其转换为Data，然后将其保存到设备上的文档目录中.像这样的功能会起作用:

Yes, you have to convert it to Data and then save it to the documents directory on the device. A function like this would work:

func saveBase64StringToPDF(_ base64String: String) {

    guard
        var documentsURL = (FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)).last,
        let convertedData = Data(base64Encoded: base64String)
        else {
        //handle error when getting documents URL
        return
    }

    //name your file however you prefer
    documentsURL.appendPathComponent("yourFileName.pdf")

    do {
        try convertedData.write(to: documentsURL)
    } catch {
        //handle write error here
    }

    //if you want to get a quick output of where your 
    //file was saved from the simulator on your machine
    //just print the documentsURL and go there in Finder
    print(documentsURL)
}

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