iOS開發載入PDF顯示電子簽章這點事
1. 使用iOS自帶的控制元件載入PDF簽章檔案QLPreviewController，問題是在低版本手機下無法顯示簽章
extension JYClauseListViewModel:QLPreviewControllerDelegate,QLPreviewControllerDataSource{
//跳轉到展示PDF的控制器
func showQLPreviewController() -> QLPreviewController{
let qlPreviewVC = QLPreviewController.init()
qlPreviewVC.delegate = self
qlPreviewVC.dataSource = self
return qlPreviewVC
}
func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
return 1
}
func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
let url = NSURL.init(fileURLWithPath: self.pdfPath!)
// let url = NSURL.init(fileURLWithPath: Bundle.main.path(forResource: "jylook", ofType: "PDF")!)
return url as QLPreviewItem
}
}
2.使用原生三方庫MuPDF載入PDF，可相容低版本顯示電子簽章，問題是打包後體積會增大20M左右
下載連結https://download.csdn.net/download/liwei5bao/10781357 使用方法JYMuPDFManage.sharedInstance().showPDF(self, filePath: pdfPath, fileName: self.clauseListViewModel.contractName ?? "")
3.使用原生三方庫TrustSignPDFDS載入PDF，可相容低版本顯示電子簽章，問題是打包後體積會增大10M左右
使用方法 let pdfVC:TrustSignPDFDSController = TrustSignPDFDSController.init(filePath: pdfPath, fileName: self.clauseListViewModel.contractName ?? "")
self.navigationController.pushViewController(pdfVC, animated: true)
4.使用pdf.js三方庫載入PDF，可相容低版本顯示電子簽章，打包後體積會增大1.2M左右
封裝控制器
import UIKit
class JYPDFTestViewController: BaseController,UIWebViewDelegate {
var titleStr: String?
var mainWebView:UIWebView?
/// 網路連線或者本地資源
var urlStr:String = ""
override func viewDidLoad() {
super.viewDidLoad()
mainWebView = UIWebView()
mainWebView?.delegate = self
mainWebView?.frame = self.view.bounds
mainWebView?.scalesPageToFit = true
self.view.addSubview(mainWebView!)
self.title = titleStr
let viewPath:String = Bundle.main.path(forResource: "viewer", ofType: "html", inDirectory: "pdfjs/web") ?? ""
var urlStr2 = "\(viewPath)?file=\(urlStr)#page=1"
urlStr2 = urlStr2.addingPercentEncoding(withAllowedCharacters: .urlQueryAllowed) ?? "https://"
let requestTwo = URLRequest.init(url: URL.init(string: urlStr2) ?? URL.init(string: "https://")!)
mainWebView?.loadRequest(requestTwo)
}
override func viewDidLayoutSubviews() {
super.viewDidLayoutSubviews()
if JYCommonObj.isIphoneX() {
let frame = view.bounds
mainWebView?.frame = frame
mainWebView?.mj_h = frame.size.height - kAreaBottomHeight
}else {
mainWebView?.frame = view.bounds
}
}
deinit {
JYAPPLog("deinit")
}
}
使用方法
let pdfHtml = PDFTestViewController()
pdfHtml.titleStr = "標題"
pdfHtml.urlStr = "網路連線或者本地資源地址"
self.navigationController.pushViewController(pdfHtml, animated: true)