您能告诉我如何将此字符串转换为PDF ...
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答案 0 :(得分:1)
这不是一个完整的pdf文件,您缺少%% EOF,并且单个PDF中可能有多个%% EOF。您还错过了对象的结尾和流的结尾。假设您将完整的pdf文件作为字符串,您必须知道使用什么编码来获取该字符串,并使用相同的编码将其写回二进制(十六进制)文件。
这是以下内容的重复: How can I make a PDF file using base64 string ? Swift
答案 1 :(得分:0)
这是一个完整的示例,说明如何存储,获取和共享base64编码的PDF 我希望它会有用。
import UIKit
class ViewController: UIViewController {
@IBAction func sharePDFActionButton(_ sender: Any) {
do {
try savePdf()
loadPDFAndShare()
} catch {
print("FALLO EL GUARDAR EL PDF")
}
}
let pdfString = "PUT ANY BASE64 ENCODED PDF FILE"
override func viewDidLoad() {
super.viewDidLoad()
}
func savePdf() throws {
let documentsURL = try FileManager.default.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: false)
let pdfDocURL = documentsURL.appendingPathComponent("document.pdf")
let pdfData = Data(base64Encoded: pdfString)
try pdfData!.write(to: pdfDocURL)
}
func loadPDFAndShare(){
do {
let documentsURL = try FileManager.default.url(for: .documentDirectory, in: .userDomainMask, appropriateFor: nil, create: false)
let pdfDocURL = documentsURL.appendingPathComponent("document.pdf")
let document = NSData(contentsOf: pdfDocURL)
let activityViewController: UIActivityViewController = UIActivityViewController(activityItems: [document!], applicationActivities: nil)
activityViewController.popoverPresentationController?.sourceView=self.view
present(activityViewController, animated: true, completion: nil)
print("document was not found")
} catch {
print("document was not found")
}
}
}
最诚挚的问候。