Question

我已经看过许多教程，但仍然无法实现拉取以刷新Webview。我发现的所有教程都没有更新得很快，或者不是针对Webview的。

抱歉，我是新来的。

这是我尝试过的最有前途的方法，它编译时没有错误，但是没有刷新功能

import UIKit
import WebKit

class ViewController: 
UIViewController,UIWebViewDelegate,UIScrollViewDelegate {


@IBOutlet weak var webview: WKWebView!
@IBOutlet weak var cnerror: UIImageView!
@IBOutlet weak var cnretry: UIButton!
@IBAction func cnretry(_ sender: Any) {
    if Reachability.isConnectedToNetwork(){
        webview.isHidden = false
        cnerror.isHidden = true
        cnretry.isHidden = true
        webview.reload()
    }else{
        webview.isHidden = true
        cnerror.isHidden = false
        cnretry.isHidden = false
    }
}
override func viewDidLoad() {
    super.viewDidLoad()

    let url = Bundle.main.url(forResource: "redir", withExtension: "html")
    let request = URLRequest(url: url!)
    let day_url = URL(string: "https://branch.zylas.net/")
    let day_url_request = URLRequest(url: day_url!,
                                     cachePolicy:NSURLRequest.CachePolicy.reloadIgnoringLocalAndRemoteCacheData,
                                     timeoutInterval: 10.0)
    let day_webView = UIWebView()
    webview.scrollView.delegate = self;
    func scrollViewWillEndDragging(scrollView: UIScrollView, withVelocity velocity: CGPoint, targetContentOffset: UnsafeMutablePointer<CGPoint>) {

        if (scrollView.contentOffset.y < 0){
            //reach top
            print("Reach Top")
            webview.reload()
        }
    }
    day_webView.loadRequest(day_url_request)
    webview.load(request)
    if Reachability.isConnectedToNetwork(){
        webview.isHidden = false
    }else{
        webview.isHidden = true
        cnerror.isHidden = false
        cnretry.isHidden = false
    }
}

override var prefersStatusBarHidden: Bool {
        return true
    }
override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)

}

}

Answer 1

@IBOutlet var webView: UIWebView!

var refController:UIRefreshControl = UIRefreshControl()




override func viewDidLoad() {
    super.viewDidLoad()

    self.navigationController?.isNavigationBarHidden = true



    let url = URL.init(string: "https://www.google.com")
    let requestObj = URLRequest.init(url: url!)
    webView.loadRequest(requestObj);
    UserDefaults.standard.register(defaults: ["UserAgent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_4) AppleWebKit/601.5.17 (KHTML, like Gecko) Version/9.1 Safari/601.5.17"])




    refController.bounds = CGRect.init(x: 0.0, y: 50.0, width: refController.bounds.size.width, height: refController.bounds.size.height)
    refController.addTarget(self, action: #selector(self.mymethodforref(refresh:)), for: .valueChanged)
    refController.attributedTitle = NSAttributedString(string: "Pull to refresh")
    webView.scrollView.addSubview(refController)
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()

}


@objc func mymethodforref(refresh:UIRefreshControl){
    webView.reload()
    refController.endRefreshing()
}
func webViewDidFinishLoad(webView: UIWebView) {
    UIApplication.shared.isNetworkActivityIndicatorVisible = false
}

func webViewDidStartLoad(webView: UIWebView) {
    UIApplication.shared.isNetworkActivityIndicatorVisible = true
}

尝试这段代码，我已经实现了UIrefreshController以实现拉动刷新

拉至刷新WebView swift 4

1 个答案: