Block a URL in a WebView on Android

问题

I want to block a link from loading within a Webview.

Code

public class WebMy extends Activity {


   
    private WebView mWebview;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        
            setContentView(R.layout.pantalla);
            getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);  
            
    
             
            mWebview  = new WebView(this);
            mWebview.setWebViewClient(new WebViewClient()); 
            mWebview.getSettings().setJavaScriptEnabled(true); // Enable JavaScript.

            mWebview .loadUrl("http://www.myweb.com");
            setContentView(mWebview );
           
    }

Potential Solution

public class MyWebViewClient extends WebViewClient {
    public boolean shuldOverrideKeyEvent (WebView view, KeyEvent event) {
         // Do something with the event here.
         return true;
    }

    public boolean shouldOverrideUrlLoading (WebView view, String url) {
        if (Uri.parse(url).getHost().equals("www.google.com")) {
             // This is my web site, so do not override; let my WebView load the page.
             return false;
        }

        // Reject everything else.
        return true;
    }
}

I don´t know how I have to use this in my code. For example, if I want to block this url http://www.myweb.com/pepito. How can I do this with this code? Thank you.

回答1:

shouldOverrideUrlLoading will examine the web page URL loaded into the WebView and all URLs loaded within the page content.

public class MyWebViewClient extends WebViewClient {
    public boolean shouldOverrideKeyEvent (WebView view, KeyEvent event) {
         
         return true;
    }

    public boolean shouldOverrideUrlLoading (WebView view, String url) {
        if (Uri.parse(url).getHost().equals("http://www.myweb.com/pepito")) {
             // This is my web site, so do not override; let the WebView load the page.
             return false;
        }

        // Reject everything else.
        return true;
    }
}

回答2:

this will cause nothing to happen when the link "http://www.myweb.com/pepito" is clicked

public class MyWebViewClient extends WebViewClient {
    public boolean shuldOverrideKeyEvent (WebView view, KeyEvent event) {
         // Do something with the event here
         return true;
    }

    public boolean shouldOverrideUrlLoading (WebView view, String url) {
        return url.equals("http://www.myweb.com/pepito");
    }
}

回答3:

    webView.setWebViewClient(new myWebClient()); 
// add this while initializing webview


// then do add following code





public class myWebClient extends WebViewClient {
        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            // TODO Auto-generated method stub
           // super.onPageStarted(view, url, favicon);
            if (Uri.parse(url).getHost().contains("https://qa.mstitute.com/test/build/#!/")) {
                // This is my web site, so do not override; let my WebView load the page
                Log.d("web","block");

            }else{
                super.onPageStarted(view, url, favicon);
            }

            Log.d("web","Started");
        }

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {
            // TODO Auto-generated method stub

            if (Uri.parse(url).getHost().equals("https://qa.mstitute.com/test/build/#!/")) {
                // This is my web site, so do not override; let my WebView load the page
                Log.d("web","block");
                return false;
            }else {
                view.loadUrl(url);
                return true;
            }

        }
        @Override
        public void onReceivedError(WebView view, WebResourceRequest request,
                                    WebResourceError error) {
            super.onReceivedError(view, request, error);
            Log.d("web","got an error");

        }
        @Override
        public void onPageFinished(WebView view, String url) {
            // TODO Auto-generated method stub





        }
    }

来源：https://stackoverflow.com/questions/35912434/block-a-url-in-a-webview-on-android