how to display progress while loading a url to webview in android

Question

I am loading url into webview   WebView webview  WebView findViewById R id webview    webview loadUrl url     It s taking some time to load url  during which it shows a blank screen  I want to display a progress dialog while the url is loading   ProgressDialog dialog   ProgressDialog show this   HI   Loading         true     However  the above is code is not working   If any have any ideas  please help   Thanks in advance

User · Answer

You need to set an own WebViewClient for your WebView by extending the WebViewClient class.

You need to implement the two methods onPageStarted (show here) and onPageFinished (dismiss here).

More guidance for this topic can be found in Google's WebView tutorial

User · Answer

public void onReceivedError WebView view  int errorCode  String description  String failingUrl            alertDialog setTitle  Error            alertDialog setMessage description           alertDialog setButton  OK   new DialogInterface OnClickListener                 public void onClick DialogInterface dialog  int which                    return                                    alertDialog show

User · Answer

You will have to over ride onPageStarted and onPageFinished callbacks  mWebView setWebViewClient new WebViewClient              public void onPageStarted WebView view  String url  Bitmap favicon                if  progressBar   null  amp  amp  progressBar isShowing                      progressBar dismiss                              progressBar   ProgressDialog show WebViewActivity this   Application Name    Loading                          public boolean shouldOverrideUrlLoading WebView view  String url                view loadUrl url                return true                     public void onPageFinished WebView view  String url                if  progressBar isShowing                      progressBar dismiss                                     public void onReceivedError WebView view  int errorCode  String description  String failingUrl                alertDialog setTitle  Error                alertDialog setMessage description               alertDialog setButton  OK   new DialogInterface OnClickListener                     public void onClick DialogInterface dialog  int which                        return                                                alertDialog show

User · Answer

Check out the sample code  It help you    private ProgressBar progressBar   progressBar  ProgressBar findViewById R id webloadProgressBar    WebView urlWebView  new WebView Context       urlWebView setWebViewClient new AppWebViewClients progressBar                            urlWebView getSettings   setJavaScriptEnabled true                           urlWebView loadUrl detailView getUrl      public class AppWebViewClients extends WebViewClient        private ProgressBar progressBar       public AppWebViewClients ProgressBar progressBar            this progressBar progressBar          progressBar setVisibility View VISIBLE              Override     public boolean shouldOverrideUrlLoading WebView view  String url               TODO Auto-generated method stub         view loadUrl url           return true              Override     public void onPageFinished WebView view  String url               TODO Auto-generated method stub         super onPageFinished view  url           progressBar setVisibility View GONE             Thanks

User · Answer

set a WebViewClient to your WebView  start your progress dialog on you onCreate   method an dismiss it when the page has finished loading in onPageFinished WebView view  String url   import android app Activity  import android app AlertDialog  import android app ProgressDialog  import android content DialogInterface  import android content Intent  import android net Uri  import android os Bundle  import android util Log  import android view Window  import android webkit WebSettings  import android webkit WebView  import android webkit WebViewClient  import android widget Toast   public class Main extends Activity       private WebView webview      private static final String TAG    Main       private ProgressDialog progressBar             Called when the activity is first created          Override     public void onCreate Bundle savedInstanceState            super onCreate savedInstanceState            requestWindowFeature Window FEATURE NO TITLE            setContentView R layout main            this webview    WebView findViewById R id webview            WebSettings settings   webview getSettings            settings setJavaScriptEnabled true           webview setScrollBarStyle WebView SCROLLBARS OUTSIDE OVERLAY            final AlertDialog alertDialog   new AlertDialog Builder this  create             progressBar   ProgressDialog show Main this   WebView Example    Loading                webview setWebViewClient new WebViewClient                 public boolean shouldOverrideUrlLoading WebView view  String url                    Log i TAG   Processing webview url click                       view loadUrl url                   return true                             public void onPageFinished WebView view  String url                    Log i TAG   Finished loading URL     url                   if  progressBar isShowing                          progressBar dismiss                                                 public void onReceivedError WebView view  int errorCode  String description  String failingUrl                    Log e TAG   Error      description                   Toast makeText activity   Oh no      description  Toast LENGTH SHORT  show                    alertDialog setTitle  Error                    alertDialog setMessage description                   alertDialog setButton  OK   new DialogInterface OnClickListener                         public void onClick DialogInterface dialog  int which                            return                                                            alertDialog show                                      webview loadUrl  http   www google com              your main xml layout   lt  xml version  1 0  encoding  utf-8   gt   lt LinearLayout xmlns android  http   schemas android com apk res android      android orientation  vertical      android layout width  fill parent      android layout height  fill parent       gt       lt WebView android id   string webview          android layout width  fill parent          android layout height  fill parent          android layout weight  1    gt   lt  LinearLayout gt

[android] how to display progress while loading a url to webview in android?

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