我正在开发一款应用程序,该应用程序需要通过 AirPrint 从 iPad 直接生成和打印访客通行证。
我到处寻找如何打印 View ,但我只能找到如何打印文本、webKit 和 mapKit。
有没有办法打印整个 View ?如果没有,什么是打印纯文本、框和照片的访客通行证的好解决方案。谢谢。
最佳答案
我通过修改此处找到的代码找到了问题的答案: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)
}
关于ios - 使用 Swift 在 iOS 中打印 View ,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/34206207/