使用 Swift 在 iOS 中打印视图 [英] Printing the view in iOS with Swift
本文介绍了使用 Swift 在 iOS 中打印视图的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我正在开发一个应用程序,需要通过 AirPrint 直接从 iPad 生成和打印访客通行证.
I am developing an app which requires visitor passes to be generated and printed directly from an iPad over AirPrint.
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.
I have looked everywhere to find out how to print a view but I can only find how to print text, webKit and mapKit.
有没有办法打印整个视图?如果没有,打印纯文本、框和照片的访客通行证有什么好的解决方案.谢谢.
Is there a way of printing an entire view? If not, what would be a good solution to print a visitor pass which will be plain text, boxes and a photograph. Thanks.
推荐答案
我通过修改此处找到的代码找到了问题的答案:UIView 的 AirPrint 内容
I have found the answer to my question by modifying the code found here: AirPrint contents of a UIView
//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, e.g. 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)
}
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