如何解决如何在pdf视图上移动/拖动多个视图?
我正在做的是,我查看了pdf视图,其中包含一个pdf示例。 最重要的是,当用户单击导航栏中的“添加”按钮时,我要添加1个以上的签署者(自定义视图)视图。
场景1 :当在pdf上添加第一个Signatory视图(customview)时,它正在添加add,并且我可以在pdf上拖动/移动该第一个Signatory视图(Signatory1),效果很好。 / p>
场景2 :在pdf上添加第二个Signatory视图(Signatory2 customview)时,它是添加的,我可以在pdf上拖动/移动该第二个Signature视图(Signatory2),这也很好用,但在这种情况下,我无法移动/拖动第一个签名者视图(Signatory1)
场景3 :类似地,当在pdf上添加第三个Signatory视图(Signatory3 customview)时,它是添加的,我可以在pdf上拖动/移动该第三个Signatory视图(Signatory3),这也很好,但是在这种情况下,我无法移动/拖动第一个签名者视图(Signatory1)和第二个签名者视图(Signatory2),等等。
问题是,我只能访问当前的签署人(我只能移动/拖动最近添加的当前签署人视图),我无法移动/拖动旧的签署人视图。
当我在pdf视图上单击/触摸(拖动/移动)任何特定的Signature视图时,如何根据我的选择移动/拖动任何Signature?
这是一些代码,
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
customView1 = SignatoryXibView(frame: CGRect(x: 30,y: 30,width: 112,height: 58))
customView2 = SignatoryXibView(frame: CGRect(x: 30,height: 58))
customView3 = SignatoryXibView(frame: CGRect(x: 30,height: 58))
customView4 = SignatoryXibView(frame: CGRect(x: 30,height: 58))
customView5 = SignatoryXibView(frame: CGRect(x: 30,height: 58))
loadPdf()
}
func loadPdf(){
if let path = Bundle.main.path(forResource: "appointment-letter",ofType: "pdf") {
if let pdfDocument = PDFDocument(url: URL(fileURLWithPath: path)) {
pdfView.displayMode = .singlePage // .singlePage //.singlePageContinuous //.twoUp
//by default display mode is - singlePageContinuous
pdfView.autoScales = true
pdfView.displayDirection = .vertical // .horizontal//.vertical
pdfView.document = pdfDocument
pdfView.autoresizingMask = [.flexibleWidth,.flexibleHeight,.flexibleTopMargin,.flexibleBottomMargin]
pdfView.zoomIn(self)
pdfView.autoScales = true
pdfView.backgroundColor = UIColor.white
//Imp line
pdfView.usePageViewController(true,withViewOptions: [:])
currentPageNumberOfPdf = self.pdfView.currentPage?.pageRef?.pageNumber ?? 0
print("Total Pages in PDF : ",pdfDocument.pageCount);
self.pdfView.bringSubviewToFront(customView1!)
}
}
}
@IBAction func addSignatoryButtonClicked(_ sender: Any) {
signatoryCount = signatoryCount + 1
if signatoryCount == 1 {
customView1?.signatoryLabel.text = "Signatory \(signatoryCount)"
self.pdfView.addSubview(customView1!)
}
else if signatoryCount == 2 {
customView2?.signatoryLabel.text = "Signatory \(signatoryCount)"
self.pdfView.addSubview(customView2!)
}
else if signatoryCount == 3 {
customView3?.signatoryLabel.text = "Signatory \(signatoryCount)"
self.pdfView.addSubview(customView3!)
}
else if signatoryCount == 4 {
customView4?.signatoryLabel.text = "Signatory \(signatoryCount)"
self.pdfView.addSubview(customView4!)
}
else if signatoryCount == 5 {
customView5?.signatoryLabel.text = "Signatory \(signatoryCount)"
self.pdfView.addSubview(customView5!)
}
}
override func touchesMoved(_ touches: Set<UITouch>,with event: UIEvent?) {
let touch = touches.first
let touchLocation = touch?.location(in: self.pdfView)
// customView1?.center = touchLocation!
if signatoryCount == 1 {
customView1?.center = touchLocation!
return
}
else if signatoryCount == 2 {
customView2?.center = touchLocation!
return
}
else if signatoryCount == 3 {
customView3?.center = touchLocation!
return
}
else if signatoryCount == 4 {
customView4?.center = touchLocation!
return
}
else if signatoryCount == 5 {
customView5?.center = touchLocation!
return
}
// frame = view.convert(customView1!.frame,from: pdfView)
// print("touchesMoved \(frame!.dictionaryRepresentation)")
}
Here is the complete project source code
解决方法
您已经很接近了。您只需要应用与我在last question中建议的方法相同,但要尊重超级视图的框架。
首先将那些助手添加到您的项目中
extension CGPoint {
static func +(lhs: CGPoint,rhs: CGPoint) -> CGPoint {
.init(x: lhs.x + rhs.x,y: lhs.y + rhs.y)
}
static func +=(lhs: inout CGPoint,rhs: CGPoint) {
lhs.x += rhs.x
lhs.y += rhs.y
}
}
extension UIView {
func translate(_ translation: CGPoint) {
let destination = center + translation
let minX = frame.width/2
let minY = frame.height/2
let maxX = superview!.frame.width-minX
let maxY = superview!.frame.height-minY
center = CGPoint(
x: min(maxX,max(minX,destination.x)),y: min(maxY,max(minY,destination.y)))
}
}
第二个方法是摆脱ViewController中的平移手势识别器和相应的方法。
第三次将SignatoryXibView平移手势更改为以下手势。这将平移视图的中心并尊重其视图的框架:
@objc func pan(_ gesture: UIPanGestureRecognizer) {
translate(gesture.translation(in: self))
gesture.setTranslation(.zero,in: self)
setNeedsDisplay()
}
版权声明:本文内容由互联网用户自发贡献,该文观点与技术仅代表作者本人。本站仅提供信息存储空间服务,不拥有所有权,不承担相关法律责任。如发现本站有涉嫌侵权/违法违规的内容, 请发送邮件至 dio@foxmail.com 举报,一经查实,本站将立刻删除。