检测特定URL并更改活动 [英] Detect specific URL and change activity

问题描述

我一直在尝试找到一种方法，可以用来检测WebView中的特定URL，然后启动另一个Activity。以下是代码：

I have been trying to find a way that can be used to detect a specific URL in a WebView and then start another Activity. Following is the code:

public class ClientWebView : WebViewClient
        {


            public override bool ShouldOverrideUrlLoading(WebView view, string url)
            {
                view.LoadUrl(url);
                return true;
            }

            public override void OnPageStarted(WebView view, string url, Bitmap favicon)
            {
                progressDialog.Show();
                if(url=="http://test-domain.com")
                     StartActivity(typeof(MainActivity));
                base.OnPageStarted(view, url, favicon);
            }

            public override void OnPageFinished(WebView view, string url)
            {
                base.OnPageFinished(view, url);
            }

            public override void OnReceivedError(WebView view, IWebResourceRequest request, WebResourceError error)
            {
                base.OnReceivedError(view, request, error);
            }
        }

但是我知道在WebViewClient中无法使用StartActivity，因为我收到以下错误An非静态字段，方法或属性'Context.StartActivity（Type）'需要对象引用。任何人都可以指导我解决方案吗？



我尝试过：



我试过用string url = webView.URL获取webview的url。但是我再次陷入如何开始另一项活动。

But I know StartActivity cannot be used in WebViewClient as I get the following error "An object reference is required for the non-static field, method or property 'Context.StartActivity(Type)'". Can Anyone please guide me with the solution?

What I have tried:

I have tried getting url of the webview with "string url= webView.URL;" but again i get stuck at how to start another activity.

推荐答案

我能够通过对课程进行以下更改来解决这个问题：

I was able to solve it by making following changes to the class:

public class ClientWebView : WebViewClient
        {
            private Context context;
            public ClientWebView(Context context)
            {
                this.context = context;
            }

            public override bool ShouldOverrideUrlLoading(WebView view, string url)
            {
                view.LoadUrl(url);
                return true;
            }

            public override void OnPageStarted(WebView view, string url, Bitmap favicon)
            {
                progressDialog.Show();
                if (url.Equals("https://test.com/"))
                {
                    var intent = new Intent(context, typeof(MainActivity));
                    context.StartActivity(intent);
                }
                base.OnPageStarted(view, url, favicon);
            }

            public override void OnPageFinished(WebView view, string url)
            {
                if (progressDialog != null)
                {
                    progressDialog.Hide();
                }
                base.OnPageFinished(view, url);
            }

            public override void OnReceivedError(WebView view, IWebResourceRequest request, WebResourceError error)
            {
                webView.Visibility = ViewStates.Invisible;
                dialog.Show();
                base.OnReceivedError(view, request, error);
            }
        }

然后在我的oncreate方法中添加以下内容：

and then added following in my oncreate method:

webView.SetWebViewClient(new ClientWebView(this));

这篇关于检测特定URL并更改活动的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！