我正在编写一个包含多个PDF文档的应用程序,我将根据用户的输入显示在屏幕上。 一旦显示,我想允许用户在PDF上绘制/注释。然后我想保存带有图纸/注释的PDF以供以后使用。
我已经无休止地搜索了关于注释PDF的教程但我回来的时间并不多!
我在GitHub上发现了一个叫做“UXMPDF”的cocoapod。有没有人用过这个?
有关执行此类操作的任何信息都将非常感谢!感谢
答案 0 :(得分:2)
首先创建PDFView并加载pdfFile:
override func viewDidLoad() {
super.viewDidLoad()
let pdfView = PDFView(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height))
guard let document = PDFDocument(url: YOUR_FILE_PATH) else {
return
}
pdfView.document = document
pdfView.displayMode = .singlePageContinuous
pdfView.autoScales = true
pdfView.displayDirection = .horizontal
pdfView.autoresizingMask = [.flexibleWidth, .flexibleHeight, .flexibleTopMargin, .flexibleBottomMargin]
pdfView.maxScaleFactor = 4
pdfView.delegate = self
pdfView.minScaleFactor = pdfView.scaleFactorForSizeToFit
pdfView.usePageViewController(true, withViewOptions: nil)
pdfView.translatesAutoresizingMaskIntoConstraints = false
self.view.addSubview(pdfView)
self.pdfView = pdfView
self.pdfDocument = document
let highLightItem = UIMenuItem(title:"Highlight"), action: #selector(highlightFromMenuItem))
}
您可以像这样从UIMenuItem
使用pdfAnnotation:
@objc func highlightFromMenuItem() {
if let document = self.pdfDocument {
let pdfSelection : PDFSelection = PDFSelection(document: document)
pdfSelection.add((self.pdfView?.currentSelection)!)
let arrayByLines = self.pdfView?.currentSelection?.selectionsByLine()
arrayByLines?.forEach({ (selection) in
let annotation = PDFAnnotation(bounds: selection.bounds(for: (self.pdfView?.currentPage)!), forType: .highlight, withProperties: nil)
annotation.color = .yellow
self.pdfView?.currentPage?.addAnnotation(annotation)
})
}
}
如果您想保存所做的事情,
self.pdfView.document.write(to:YOUR_FILE_URL)
您可以使用的其他pdfAnnotation:
.underline
.strikeOut
.circle
.square