在辅助viewcontroller上显示来自网站的pdf
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我的应用程序中有多个列表,我现在希望在用户单击一个单元格时从网站显示pdf。我很好奇我可以在listview代码中实现哪些代码将信息传递给辅助控制器,辅助控制器将在UIWebView(?)而不是图像中显示pdf。
我的代码ID就像编辑发送pdf而不是列表中的图像是:
import UIKit
import GoogleMobileAds
class tablelist: UIViewController, UITableViewDataSource, UITableViewDelegate, GADBannerViewDelegate {
var bannerView: GADBannerView!
override func viewDidLoad(){
super.viewDidLoad()
self.navigationController?.navigationBar.barTintColor = UIColor.black
let textAttributes = [NSForegroundColorAttributeName:UIColor.red]
navigationController?.navigationBar.titleTextAttributes = textAttributes
self.animalTableView.dataSource = self
self.animalTableView.delegate = self
self.view.backgroundColor = UIColor.black
//--------------------------LIST STUFF-------------------------------------------------------//
let respiratory = ["Cat", "Dog", "Cow", "Mulval"]
@IBOutlet weak var animalTableView: UITableView!
///Set elements in cell
func tableView( _ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "adultresplist"/*Identifier*/, for: indexPath)
cell.textLabel?.text = respiratory[indexPath.row]
// FONT STYLE
cell.textLabel?.textColor = UIColor.white
cell.detailTextLabel?.font = UIFont.boldSystemFont(ofSize: 30.0)
cell.textLabel?.textAlignment = .center
self.animalTableView.backgroundColor = UIColor.clear
cell.textLabel?.backgroundColor = UIColor.black
return cell
}
///Return Count
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return respiratory.count
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
{
let Vc = self.storyboard?.instantiateViewController(withIdentifier: "imageViewController") as! imageViewController
switch indexPath.row
{
case 0:
Vc.passedImage = UIImage.init(named: "image1")!
self.navigationController?.pushViewController(Vc, animated: true)
break;
case 1:
Vc.passedImage = UIImage.init(named: "image2")!
self.navigationController?.pushViewController(Vc, animated: true)
break;
case 2:
Vc.passedImage = UIImage.init(named: "image3")!
self.navigationController?.pushViewController(Vc, animated: true)
break;
case 3:
Vc.passedImage = UIImage.init(named: "image1")!
self.navigationController?.pushViewController(Vc, animated: true)
break;
default:
Vc.passedImage = UIImage.init(named: "image2")!
self.navigationController?.pushViewController(Vc, animated: true)
}
}
}
}
我在二级控制器中显示图像的代码是:
class pdfviewer: UIViewController,GADBannerViewDelegate, UIGestureRecognizerDelegate, UIScrollViewDelegate, UIWebViewDelegate {
var bannerView: GADBannerView!
var pdfUrl: UIWebView! = nil
@IBOutlet weak var webView: UIWebView!
func loadPdfWithUrl(url: URL)
{
webView.loadRequest(URLRequest(url: url))
}
func webViewDidFinishLoad(_ webView: UIWebView)
{
if (webView.isLoading)
{
let contentSize:CGSize = webView.scrollView.contentSize
let viewSize:CGSize = self.view.bounds.size
let rw : CGFloat = viewSize.width / contentSize.width
webView.scrollView.minimumZoomScale = rw
webView.scrollView.maximumZoomScale = rw
webView.scrollView.zoomScale = rw
}
}
答案
从WebView中的链接加载Pdf的示例代码
在你的TableList中
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let Vc = self.storyboard?.instantiateViewController(withIdentifier: "pdfVC") as! pdfVC
switch indexPath.row
{
case 0:
Vc.pdfUrl = URL.init(string: "http://unec.edu.az/application/uploads/2014/12/pdf-sample.pdf")
self.navigationController?.pushViewController(Vc, animated: true)
break;
case 1:
Vc.pdfUrl = URL.init(string: "http://unec.edu.az/application/uploads/2014/12/pdf-sample.pdf")
self.navigationController?.pushViewController(Vc, animated: true)
break;
case 2:
Vc.pdfUrl = URL.init(string: "http://unec.edu.az/application/uploads/2014/12/pdf-sample.pdf")
self.navigationController?.pushViewController(Vc, animated: true)
break;
case 3:
Vc.pdfUrl = URL.init(string: "http://unec.edu.az/application/uploads/2014/12/pdf-sample.pdf")
self.navigationController?.pushViewController(Vc, animated: true)
break;
default:
Vc.pdfUrl = URL.init(string: "http://unec.edu.az/application/uploads/2014/12/pdf-sample.pdf")
self.navigationController?.pushViewController(Vc, animated: true)
break;
}
}
在pdf控制器中
func loadPdfWithUrl(url: URL)
{
webView.loadRequest(URLRequest(url: url))
}
func webViewDidFinishLoad(_ webView: UIWebView)
{
if (webView.isLoading)
{
let contentSize:CGSize = webView.scrollView.contentSize
let viewSize:CGSize = self.view.bounds.size
let rw : CGFloat = viewSize.width / contentSize.width
webView.scrollView.minimumZoomScale = rw
webView.scrollView.maximumZoomScale = rw
webView.scrollView.zoomScale = rw
}
}
StoryBoard:
示例代码文件
链接 - https://drive.google.com/open?id=1HmSnGFEGAbPLFdAcUzdbpodAm6gfXbmm
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