How can I make a PDF file using base64 string ? Swift [duplicate]

Answer 1

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)
}

Answer 2

You want something like:

if let d = Data(base64Encoded: base64string) {
    do {
        try d.write(to: outputFile)
    } catch {
        // handle error
    }
}

Where base64string is the base64 PDF string, and outputFile is a URL for the PDF output file.