我正在开发一款应用程序,需要通过AirPrint直接从iPad生成和打印访客通行证。
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。感谢。
答案 0 :(得分:10)
我通过修改此处的代码找到了我的问题的答案: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)
}
答案 1 :(得分:3)
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
您的观点,imageView或UIView究竟是什么?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AirKrint func,如WebKit,文本,或者您可以打印以创建pdf数据。
最好的解决方案是Create Pdf文件在这里用于swift Generate PDF with Swift
打印pdf文件是为了快速实施:
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)
答案 2 :(得分:1)
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!
}
}
答案 3 :(得分:0)
迅速4:
let printInfo = UIPrintInfo(dictionary:nil)
printInfo.outputType = UIPrintInfo.OutputType.general
printInfo.jobName = "iOS app printing"
let printController = UIPrintInteractionController.shared
printController.printInfo = printInfo
printController.printingItem = UIImage.imageFromView(self.view) // your view here
printController.present(from: self.view.frame, in: self.view, animated: true, completionHandler: nil)
extension UIImage {
/// Get image from given view
///
/// - Parameter view: the view
/// - Returns: UIImage
public class func imageFromView(view: UIView) -> UIImage {
UIGraphicsBeginImageContextWithOptions(view.frame.size, false, 0)
view.drawHierarchy(in: view.bounds, afterScreenUpdates: false)
let image: UIImage = UIGraphicsGetImageFromCurrentImageContext()!
UIGraphicsEndImageContext()
return image
}
}