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在Swift 3中使用UIActivityViewController共享PDF
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我花了很多时间思考如何在从URL加载的UIWebView中共享PDF文件，例如“
http：//youPdfFile.pdf ”
经过几天的忙碌，我发现了我认为最合适的方法：
1）PDF必须首先保存在文件系统中。 例如，可以在加载UIWebView之后完成：
class yourViewController: UIViewController{ var documentPathToLoad = "http://youPdfFile.pdf" ... func webViewDidFinishLoad(_ webView: UIWebView) { if yourWebView.isLoading { // still loading return }//Save the pdf document to file system savePdf() } func savePdf(){ let fileManager = FileManager.default let paths = (NSSearchPathForDirectoriesInDomain((.documentDirectory, .userDomainMask, true)[0] as NSString).appendingPathComponent("documento.pdf") let pdfDoc = NSData(contentsOf:URL(string: documentPathToLoad)!) fileManager.createFile(atPath: paths as String, contents: pdfDoc as Data?, attributes: nil) } }2）读取保存的文件，然后共享。 此方法在Swift 3.0.1中对我有效：
func loadPDFAndShare(){let fileManager = FileManager.default let documentoPath = (self.getDirectoryPath() as NSString).appendingPathComponent("documento.pdf")if fileManager.fileExists(atPath: documentoPath){ let documento = NSData(contentsOfFile: documentoPath) let activityViewController: UIActivityViewController = UIActivityViewController(activityItems: [documento!], applicationActivities: nil) activityViewController.popoverPresentationController?.sourceView=self.view present(activityViewController, animated: true, completion: nil) } else { print("document was not found") } }
