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Android webview custom error page

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北荒
北荒 2021-02-05 12:41

I am creating application that use WebView to access a online website. I am stuck where I have to add code to check availability of page.

public class SpartanWeb
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3条回答
  • 無奈伤痛
    2021-02-05 13:01

    You can use the following code ..

    public class TestResultWebclient extends WebViewClient {
        ProgressDialog progressDialog;

        @Override
        public void onPageStarted(WebView view, String url, Bitmap favicon) {
            if (progressDialog == null) {
                progressDialog = new ProgressDialog(TermsAndCondsMrupeeActivity.this);
                progressDialog.setMessage("Loading...");
                progressDialog.show();
            }
            super.onPageStarted(view, url, favicon);
        }

        @Override
        public boolean shouldOverrideUrlLoading(WebView view, String url) {

            view.loadUrl(url);
            return true;

        }

        @Override
        public void onPageFinished(WebView view, String url) {
            if (progressDialog != null)
                try {

                    if (progressDialog.isShowing()) {
                        progressDialog.dismiss();
                        progressDialog = null;
                    }

                } catch (Exception exception) {
                    exception.printStackTrace();
                }
            super.onPageFinished(view, url);

        }
    }
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  • 情书的邮戳
    2021-02-05 13:07

    You can call loadErrorPage(view) function in the onReceivedError function.

    The following code will load the error content you need to show.Here i am load the html file with loadDataWithBaseURL.

    public void loadErrorPage(WebView webview){
        if(webview!=null){

            String htmlData ="<html><body><div align=\"center\" >"This is the description for the load fail : "+description+"\nThe failed url is : "+failingUrl+"\n"</div></body>";

            webview.loadUrl("about:blank");
            webview.loadDataWithBaseURL(null,htmlData, "text/html", "UTF-8",null);
            webview.invalidate();

        }
    }
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  • 滥情空心
    2021-02-05 13:21

    I added onReceivedError to mWebView.setWebViewClient(new WebViewClient so now it's working. Thanks for tips.

    mWebView.setWebViewClient(new WebViewClient() { 
        @Override public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
               mWebView.loadUrl("file:///android_asset/error.html");
        } });
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