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10.SwifUI中使用WKWebView

import WebKit
import SwiftUI
struct WebView: UIViewRepresentable {
typealias UIViewType = WKWebView
let webView: WKWebView
func makeUIView(context: Context) -> WKWebView {
return webView
}
func updateUIView(_ uiView: WKWebView, context: Context) { }
}
class WebViewNavigationDelegate: NSObject, WKNavigationDelegate {
func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
// TODO
decisionHandler(.allow)
}
func webView(_ webView: WKWebView, decidePolicyFor navigationResponse: WKNavigationResponse, decisionHandler: @escaping (WKNavigationResponsePolicy) -> Void) {
// TODO
decisionHandler(.allow)
}
}
class WebViewModel: ObservableObject {
let webView: WKWebView
private let navigationDelegate: WebViewNavigationDelegate
init() {
let configuration = WKWebViewConfiguration()
configuration.websiteDataStore = .nonPersistent()
webView = WKWebView(frame: .zero, configuration: configuration)
navigationDelegate = WebViewNavigationDelegate()
webView.navigationDelegate = navigationDelegate
setupBindings()
}
@Published var urlString: String = ""
@Published var canGoBack: Bool = false
@Published var canGoForward: Bool = false
@Published var isLoading: Bool = false
private func setupBindings() {
webView.publisher(for: \.canGoBack)
.assign(to: &$canGoBack)
webView.publisher(for: \.canGoForward)
.assign(to: &$canGoForward)
webView.publisher(for: \.isLoading)
.assign(to: &$isLoading)
}
func loadUrl() {
guard let url = URL(string: urlString) else {
return
}
webView.load(URLRequest(url: url))
}
func loadHTML(html: String) {
webView.loadHTMLString(html, baseURL: nil)
}
func goForward() {
webView.goForward()
}
func goBack() {
webView.goBack()
}
}

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