Android Webview Catch 404 Error
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Android Webview Detect Redirect
Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of android webview onreceivederror not called 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How can I check from Android WebView if a page is a “404 page not found”? up vote android webview error page 17 down vote favorite 4 I want to check a "404 page not found" from a WebView and if it's a 404 then I revert to the previous page. Ty for your help EDIT also the webpages I want to see are pure .jpg 1.jpg 2.jpg 3.jpg but I have no info of how many images exist. So if anyone can propose another method, he is welcome to do so. android webview share|improve
Onreceivedhttperror
this question edited Sep 6 '12 at 13:34 S.L. Barth 5,209113249 asked Jul 5 '10 at 19:56 weakwire 6,95464072 You may want to check out this thread from the android-developers group. –Tim Kryger Jul 5 '10 at 21:06 add a comment| 7 Answers 7 active oldest votes up vote -3 down vote accepted Attach a WebViewClient to your WebView, where you override onReceivedError() to find out about the 404 response -- though that will probably be returned as ERROR_FILE_NOT_FOUND. share|improve this answer answered Jul 5 '10 at 21:01 CommonsWare 590k7914021463 11 HTTP status errors are not reported over the onReceivedError method. See the documentation –Mannaz Aug 9 '11 at 10:51 The documentation you linked to does not agree with you. The ERROR_ constants are for various HTTP errors (e.g., ERROR_FILE_NOT_FOUND). –CommonsWare Aug 9 '11 at 11:32 5 The Paragraph says "The docs are wrong in this case. We'll update the docs to say that the errors are not HTTP errors but are unrecoverable resource errors (file not found, no network connection, server not found for the main resource, etc.).". So I guess the "Fixed in Froyo" comment is about the documentation. I'm trying this on API Level 8 and it does not recieve HTTP status errors. –Mannaz Aug 9
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Android Webview Onreceivederror Example
us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, http://stackoverflow.com/questions/3181843/how-can-i-check-from-android-webview-if-a-page-is-a-404-page-not-found just like you, helping each other. Join them; it only takes a minute: Sign up Detecting Webview Error and Show Message up vote 13 down vote favorite 3 I'd like to show an error message when there is an error loading a webview page (No connection). This is what I have so far, without the error http://stackoverflow.com/questions/6392318/detecting-webview-error-and-show-message handling code: public class TrackerPage extends Activity { // @Override private WebView webview; private ProgressDialog progressDialog; private boolean error; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Get rid of the android title bar requestWindowFeature(Window.FEATURE_NO_TITLE); // Set the XML layout setContentView(R.layout.tracker_page); // Bundle objectbundle = this.getIntent().getExtras(); webview = (WebView) findViewById(R.id.tracker); final Activity activity = this; // Enable JavaScript and lets the browser go back webview.getSettings().setJavaScriptEnabled(true); webview.canGoBack(); webview.setWebViewClient(new WebViewClient() { public boolean shouldOverrideUrlLoading(WebView view, String url) { view.loadUrl(url); return true; } public void onLoadResource(WebView view, String url) { // Check to see if there is a progress dialog if (progressDialog == null) { // If no progress dialog, make one and set message progressDialog = new ProgressDialog(activity); progressDialog.setMessage("Loading please wait..."); progressDialog.show(); // Hide the webview while loading webview.setEnabled(false); } } public void onPageFinished(WebView view, String url) { // Page is done loading; // hide the progress dialog and show the webview if (progressDialog.isShowing()) { progressDialog.dismiss(); progressDialog = null; webview.setEnabled(true); } } }); // The URL that w
32755: onReceivedError does not receive HTTP Errors 38 people starred this issue and may be notified of changes. Back https://code.google.com/p/android/issues/detail?id=32755 to list Status: Obsolete Owner: ---- Closed: Dec 2014 Type-Defect Priority-Medium ReportedBy-Developer http://upshots.org/android/android-replace-webview-40 Sign in to add a comment Reported by mr.j...@gmail.com, Jun 5, 2012 The WebViewClient class lets activities receive an onReceivedError callback when the WebView is unable to load a URL, but there is no callback for HTTP Errors, like: 401, 403, 404, 500, and so on. android webview For instance, when a 500 error occurs no message is displayed on the WebView and there is no way we can get the received HTTP Code from WebView. Some workaround this issue is just horrible: http://stackoverflow.com/questions/3181843/how-can-i-check-from-android-webview-if-a-page-is-a-404-page-not-found On issue 968 the documentation was fixed for onReceivedError, but no callback was created. Dec 12, 2012 #1 banxi1...@gmail.com When I turn android webview onreceivederror off the network,I still can't get any error code in onReceivedError(), why they just not do this? Jan 31, 2013 #2 nakti...@gmail.com I agree, having a way to handle HTTP errors would really help. Jan 31, 2013 #3 saul...@zemaitaitis.lt Yes it would really be nice to have a straightforward way to handle error codes without having to resort to server-side workarounds. Also, current documentation does not clearly state on what errors the handler is called. Feb 4, 2013 #4 oklanj...@itriagehealth.com Agree, WebView would be much more usable if there is a way to check for HTTP errors Jul 23, 2013 #5 singhpar...@gmail.com onReceivedError is not called for 404.is this webview bug?is there any workaround? Apr 17, 2014 #6 DaB...@gmail.com Any news about this issue? Sounds like mandatory feature to me. Jun 4, 2014 #7 ch.bach...@gmail.com Anything happening on this issue? The Webview is useless without the possibility to respond to https errors. Sep 4, 2014 #8 dssdsdds...@gmail.com Confirm issue, checked with http error code 504 Sep 17, 2014 #9 amante...@gma
worked as-is (mainly, I had issues with the back-stack after implementing the more common suggestions), I came up with the following monstrosity. Use at your own peril: @Override public void onReceivedError(WebView webView, int errorCode, String description, String failingUrl) { try { webView.stopLoading(); } catch (Exception e) { } try { webView.clearView(); } catch (Exception e) { } if (webView.canGoBack()) { webView.goBack(); } webView.loadUrl("file:///android_asset/path/to/your/missing-page-template.html"); super.onReceivedError(webView, errorCode, description, failingUrl); } 12345678910111213141516 @Overridepublic void onReceivedError(WebView webView, int errorCode, String description, String failingUrl) { try { webView.stopLoading(); } catch (Exception e) { } try { webView.clearView(); } catch (Exception e) { } if (webView.canGoBack()) { webView.goBack(); } webView.loadUrl("file:///android_asset/path/to/your/missing-page-template.html"); super.onReceivedError(webView, errorCode, description, failingUrl);} the above is an overriden method of a new WebViewClient… e.g., private WebViewClient client = new WebViewClient() { // ... override whatever, including the onReceivedError method above } WebView webView = new WebView(context); webView.setWebViewClient(client); 12345 private WebViewClient client = new WebViewClient() {// ... override whatever, including the onReceivedError method above}WebView webView = new WebView(context);webView.setWebViewClient(client); Arun says: April 1, 2015 at 2:57 am You could avoid all those extra handling(stopLoading, clearView, goBack) by using webView.loadDataWithBaseURL which helps to overwrite the history. Reply moagrius says: April 1, 2015 at 7:41 am 404 is unlikely when working with pages constructed internally - this post details how to avoid the default 404 page shown when a page can't be loaded (almost certainly an external page). Thanks for posting. Reply Martin says: March 31, 2014 at 8:02 am Doesn't work on Android 4.1.2 Reply moagrius says: March 31, 2014 at 10:39 am What does "not work" mean exactly? Reply netdragon says: May 8, 2013 at 9:42 pm Doesn't work - Android 4.2 Reply gabriel says: November 8, 2012