How to listen for a WebView finishing loading a URL?

Question

I have a WebView that is loading a page from the Internet. I want to show a ProgressBar until the loading is complete.

How do I listen for the completion of page loading of a WebView?

Answer 1

Extend WebViewClient and call onPageFinished() as follows:

mWebView.setWebViewClient(new WebViewClient() {     public void onPageFinished(WebView view, String url) {         // do your stuff here     } }); 

Answer 2

@ian this is not 100% accurate. If you have several iframes in a page you will have multiple onPageFinished (and onPageStarted). And if you have several redirects it may also fail. This approach solves (almost) all the problems:

boolean loadingFinished = true; boolean redirect = false;  mWebView.setWebViewClient(new WebViewClient() {      @Override     public boolean shouldOverrideUrlLoading(WebView view, String urlNewString) {         if (!loadingFinished) {             redirect = true;         }          loadingFinished = false;         webView.loadUrl(urlNewString);         return true;     }      @Override     public void onPageStarted(WebView view, String url) {         loadingFinished = false;         //SHOW LOADING IF IT ISNT ALREADY VISIBLE       }      @Override     public void onPageFinished(WebView view, String url) {         if (!redirect) {            loadingFinished = true;             //HIDE LOADING IT HAS FINISHED         } else {             redirect = false;          }     } }); 

UPDATE:

According to the documentation: onPageStarted will NOT be called when the contents of an embedded frame changes, i.e. clicking a link whose target is an iframe.

I found a specific case like that on Twitter where only a pageFinished was called and messed the logic a bit. To solve that I added a scheduled task to remove loading after X seconds. This is not needed in all the other cases.

UPDATE 2:

Now with current Android WebView implementation:

boolean loadingFinished = true; boolean redirect = false;      mWebView.setWebViewClient(new WebViewClient() {          @Override         public boolean shouldOverrideUrlLoading(                 WebView view, WebResourceRequest request) {             if (!loadingFinished) {                redirect = true;             }              loadingFinished = false;             webView.loadUrl(request.getUrl().toString());             return true;         }          @Override         public void onPageStarted(                 WebView view, String url, Bitmap favicon) {             super.onPageStarted(view, url, favicon);             loadingFinished = false;             //SHOW LOADING IF IT ISNT ALREADY VISIBLE           }          @Override         public void onPageFinished(WebView view, String url) {             if (!redirect) {                loadingFinished = true;                 //HIDE LOADING IT HAS FINISHED             } else {                 redirect = false;              }         }     });