ios WKWebView 内容加载函数永远不会被调用
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/25504481/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
WKWebView Content loaded function never get called
提问by Darx
i try to get a function called after my Content inside WKWebView is fully loaded. I found the "didFinishNavigation" function at the Apple Swift WKNavigation Documentation.
我尝试在 WKWebView 中的内容完全加载后调用一个函数。我在 Apple Swift WKNavigation 文档中找到了“didFinishNavigation”功能。
func webView(webView: WKWebView!, didFinishNavigation navigation: WKNavigation!) {
println("WebView content loaded.")
}
But the function never get called.
但该函数永远不会被调用。
import UIKit
import WebKit
class ViewController: UIViewController WKNavigationDelegate {
override func loadView() {
super.loadView()
self.webView = WKWebView(frame:self.containerView.frame, configuration: WKWebViewConfiguration())
self.containerView.addSubview(webView!)
self.containerView.clipsToBounds = true
}
override func viewDidLoad() {
super.viewDidLoad()
var url = NSURL(string:"http://google.com/")
var req = NSURLRequest(URL:url)
self.webView!.loadRequest(req)
}
func webView(webView: WKWebView!, didFinishNavigation navigation: WKNavigation!) {
println("WebView content loaded.")
}
}
回答by Sandeep
You are not setting the navigationDelegate. Set it and it should be fine.
您没有设置 navigationDelegate。设置它，它应该没问题。
class ViewController: UIViewController, WKNavigationDelegate {
override func viewDidLoad() {
super.viewDidLoad()
let noLayoutFormatOptions = NSLayoutFormatOptions(rawValue: 0)
let webView = WKWebView(frame: CGRectZero, configuration: WKWebViewConfiguration())
webView.setTranslatesAutoresizingMaskIntoConstraints(false)
webView.navigationDelegate = self
view.addSubview(webView)
view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("V:|[webView]|", options: noLayoutFormatOptions, metrics: nil, views: ["webView": webView]))
view.addConstraints(NSLayoutConstraint.constraintsWithVisualFormat("H:|[webView]|", options: noLayoutFormatOptions, metrics: nil, views: ["webView": webView]))
let url = NSURL(string: "http://google.com")
let request = NSURLRequest(URL: url)
webView.loadRequest(request)
}
func webView(webView: WKWebView!, didFinishNavigation navigation: WKNavigation!) {
print("Finished navigating to url \(webView.url)");
}
}
And here is a bit better version with Swift 3.
这里有一个更好的 Swift 3 版本。
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let configuration = WKWebViewConfiguration()
let webView = WKWebView(frame: .zero, configuration: configuration)
webView.translatesAutoresizingMaskIntoConstraints = false
webView.navigationDelegate = self
view.addSubview(webView)
[webView.topAnchor.constraint(equalTo: view.topAnchor),
webView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
webView.leftAnchor.constraint(equalTo: view.leftAnchor),
webView.rightAnchor.constraint(equalTo: view.rightAnchor)].forEach { anchor in
anchor.isActive = true
}
if let url = URL(string: "https://google.com/search?q=westworld") {
webView.load(URLRequest(url: url))
}
}
}
extension ViewController: WKNavigationDelegate {
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
print("Finished navigating to url \(webView.url)")
}
}
