如何从 WKWebview 中的按钮单击重定向并使用 objective c 返回到 iOS 应用程序？

Question

我正在开发本机 iOS 应用程序。单击按钮，我正在 WKWebview 中加载一个网站应用程序。在使用用户名和密码登录后的 Web 视图中，我们会看到以下权限屏幕，其中有“允许”和“拒绝”按钮。

我想要的是当按下“允许”按钮时，当前屏幕应该被关闭并重定向回我的应用程序。与“拒绝”按钮类似。经过大量研究后，我发现 WKWebviewDelegate 的以下 Swift 代码：

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {

    // here we handle internally the callback url and call method that call handleOpenURL (not app scheme used)
    if let url = navigationAction.request.url, url.host == "localhost" , url.path == "/square-oauth-callback" {


        print(url)
        print(url.valueOf("code"))
        //decisionHandler(.cancel)

        /*  Dismiss your view controller as normal
            And proceed with OAuth authorization code
            The code you receive here is not the auth token; For auth token you have to make another api call with the code that you received here and you can procced further
         */

        /*
            Auth Process Flow: https://developer.squareup.com/docs/oauth-api/how-it-works#oauth-access-token-management

            Obtain Auth Token: https://developer.squareup.com/reference/square/oauth-api/obtain-token
         */

    }
    decisionHandler(.allow)
}

我的方法正确吗？如果是，有人可以告诉我上面代码的 Objective-C 替代方案吗？抱歉，我最近使用 Swift 开始了我的职业生涯，而且我对 Objective-C 知之甚少。如果不是，有人可以建议我正确的方法吗？

Answer 1

同样的委托方法也可以在 objective-C 中使用：

    - (void)webView:(WKWebView *)webView 
decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction 
decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler;

Objective-C 上面代码的转换：

  - (void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler
{
        if ([navigationAction.request.URL isEqual:@"localhost"] && [navigationAction.request.URL.path isEqual:@"/square-oauth-callback"]) {
            decisionHandler(WKNavigationActionPolicyCancel);
            NSLog(@"URL:%@",navigationAction.request.URL);
        }
        else
        {
            decisionHandler(WKNavigationActionPolicyAllow);
        }
}

Apple 文档：https://developer.apple.com/documentation/webkit/wknavigationdelegate/1455641-webview?language=objc

如何从 WKWebview 中的按钮单击重定向并使用 objective c 返回到 iOS 应用程序？

How to redirect from a button click inside WKWebview and to go back to the iOS application using objective c?

iphone

xcode

objective-c

ios

wkwebview