使用Swift在iOS中打印视图

我正在开发一个应用程序，需要通过AirPrint直接从iPad生成和打印访问者通行证。

我到处寻找如何打印视图，但我只能找到如何打印文本，webKit和mapKit。

有没有办法打印整个视图？ 如果没有，打印访客通行证将是一个很好的解决方案，它将是纯文本，方框和照片。 谢谢。

Answer 1

我通过修改这里找到的代码找到了我的问题的答案： UIView的AirPrint内容

//create an extension to covert the view to an image extension UIView { func toImage() -> UIImage { UIGraphicsBeginImageContextWithOptions(bounds.size, false, UIScreen.mainScreen().scale) drawViewHierarchyInRect(self.bounds, afterScreenUpdates: true) let image = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() return image } } //In your view controller @IBAction func printButton(sender: AnyObject) { let printInfo = UIPrintInfo(dictionary:nil) printInfo.outputType = UIPrintInfoOutputType.General printInfo.jobName = "My Print Job" // Set up print controller let printController = UIPrintInteractionController.sharedPrintController() printController.printInfo = printInfo // Assign a UIImage version of my UIView as a printing iten printController.printingItem = self.view.toImage() // If you want to specify a printer guard let printerURL = URL(string: "Your printer URL here, eg ipps://HPDC4A3E0DE24A.local.:443/ipp/print") else { return } guard let currentPrinter = UIPrinter(url: printerURL) else { return } printController.print(to: currentPrinter, completionHandler: nil) // Do it printController.presentFromRect(self.view.frame, inView: self.view, animated: true, completionHandler: nil) } 

Answer 2

我认为您必须使用Swift查看打印照片示例代码： https ： //developer.apple.com/library/ios/samplecode/PrintPhoto/Introduction/Intro.html

你的观点究竟是什么，imageView或UIView？ 如果您对imageView或UIImage感兴趣，可以使用Apple的Print Photo样本。 如果您的主题是UIView，您可以从view.layers创建pdf上下文并发送到WebKit，文本等AirPrint func，或者您可以打印以创建pdf数据。

最好的解决方案是Create Pdf文件，这里是swift 使用Swift生成PDF

打印pdf文件用于快速实现：

 var pdfLoc = NSURL(fileURLWithPath:yourPdfFilePath) let printController = UIPrintInteractionController.sharedPrintController()! let printInfo = UIPrintInfo(dictionary:nil)! printInfo.outputType = UIPrintInfoOutputType.General printInfo.jobName = "print Job" printController.printInfo = printInfo printController.printingItem = pdfLoc printController.presentFromBarButtonItem(printButton, animated: true, completionHandler: nil) 

Answer 3

在Swift 3.x中的Hier

  func prt() { let printInfo = UIPrintInfo(dictionary:nil) printInfo.outputType = UIPrintInfoOutputType.general printInfo.jobName = "My Print Job" // Set up print controller let printController = UIPrintInteractionController.shared printController.printInfo = printInfo // Assign a UIImage version of my UIView as a printing iten printController.printingItem = self.view.toImage() // Do it printController.present(from: self.view.frame, in: self.view, animated: true, completionHandler: nil) } 

}

 extension UIView { func toImage() -> UIImage { UIGraphicsBeginImageContextWithOptions(bounds.size, false, UIScreen.main.scale) drawHierarchy(in: self.bounds, afterScreenUpdates: true) let image = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext() return image! } }