我試圖直接從我的應用程序打印 - 這是一個清單。唯一的問題是當我打印時,圖像只會填滿打印紙的1/4。我希望圖像能夠填滿8.5英寸x 11英寸的紙張。我的打印按鈕如何打印8.5英寸×11英寸的圖像?斯威夫特3,IOS
這是我的打印按鈕:
@IBAction func buttonAction2(_ sender: UIButton) {
//Screenshot of view controller (minus status/Nav bar)
let top: CGFloat = 46
let bottom: CGFloat = 0
let size = CGSize(width: view.frame.size.width, height: view.frame.size.height - top - bottom)
UIGraphicsBeginImageContextWithOptions(size, false, 0)
let context = UIGraphicsGetCurrentContext()!
context.translateBy(x: 0, y: -top)
view.layer.render(in: context)
let snapshot = UIGraphicsGetImageFromCurrentImageContext()
UIGraphicsEndImageContext()
///Print screenshot
let printController = UIPrintInteractionController.shared
let printInfo = UIPrintInfo(dictionary:nil)
printInfo.jobName = "printing an image"
printInfo.outputType = .photo
printController.printInfo = printInfo
printController.printingItem = snapshot
printController.present(animated: true) { (_, isPrinted, error) in if error == nil {
if isPrinted {
print("image is printed")
}else{
print("image is not printed")
}
}
}
}
我可以將圖像保存到我的相機膠捲,並從那裏打印的,而不是直接從我的應用程序進行打印,以及完美的作品。從我的相機膠捲打印時,圖像會填滿整個頁面:
//Save photo to camera roll
UIImageWriteToSavedPhotosAlbum(snapshot!, nil, nil, nil)
雖然我確實需要從應用程序進行打印。有什麼辦法可以做到這一點?
的圖像是現在75%切斷(從它吹起來),並且仍然只填補了網頁的75%。 – DanielG