Develop Reference

My WebViewClient is refreshing in a loop

I'm trying to load a web in a webview, but when the page is loaded, the webview carry on refreshing the view in a loop. How I can avoid this?
My code to load the page is the next:
In the onCreateView:
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl(pathto.get_register_service());
webView.setWebViewClient(new RegisterWebViewClient());
webView.invalidate();
The custom class of the WebViewClient:
private class RegisterWebViewClient extends WebViewClient {
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
view.loadUrl(url);
progressWheel.setVisibility(View.GONE);
ll_error_message.setVisibility(View.GONE);
webView.setVisibility(View.VISIBLE);
}
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
super.onReceivedError(view, errorCode, description, failingUrl);
progressWheel.setVisibility(View.GONE);
ll_error_message.setVisibility(View.VISIBLE);
webView.setVisibility(View.GONE);
}
}

You are reloading page in onPageFinished event with view.loadUrl(url);
onPageFinished is triggered when page has finished loading and you should not reload the page inside that event or you will end up in endless loop.

Restricting WebView to one page only

Is it possible to restrict WebViews so that when you have let's say one webview for website but you just want the view to stick to that page and only that page?
Great example is I have a twitter WebView that is following a tag. I just want the user to be able to follow that tag not be able to go deeper into twitter stuff.
It's already a pre-set link,
Button--> opens web view with set link to twitter.
So has to be some kind of check for on press or something like I think.

something like this should do it.
myWebView = (WebView) findViewById(R.id.webview);
myWebView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if(url.contains("somedomain.com")) {
view.loadUrl(url);
}
return true;
}
});

In-fact the above is a good solution but if you want an elaborate one. Try this one. I don't know whether this is proper solution for your query. play around with this.
webview.setWebViewClient(new MyWebViewClient());
private class MyWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return true;
}
#Override
public void onReceivedError(WebView view, int errorCode,
String description, String failingUrl) {
super.onReceivedError(view, errorCode, description, failingUrl);
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
if(!url.equals("your_domain_name.com/")){
setResult(RESULT_OK);
finish();
}
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
if(!url.equals("your_domain_name.com/")){
finish();
}
}
#Override
public void onTooManyRedirects(WebView view, Message cancelMsg,
Message continueMsg) {
super.onTooManyRedirects(view, cancelMsg, continueMsg);
cancelMsg.sendToTarget();
}
}

How can I trigger a function when a webpage is successfully loaded in webview?

I want to trigger a function after webview's finished loading a webpage and received no error. According to my experiment, the onPageFinished() will be triggered several times and in most of the cases, it will be executed before onReceivedError().
So how can I know that the webpage is loaded and no error is received?

You can set the WebViewClient in the WebView and Override its Callback methods which will let you know when the webpage has finished loading the page. For example
webView.setWebViewClient(new MyWebViewClient());
private class MyWebViewClient extends WebViewClient {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon){
super.onPageStarted(view, url, favicon);
if(progess!=null){
progess.dismiss();
}
progess = ProgressDialog.show(LoadUrl.this, "", "Loading please wait...");
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
super.shouldOverrideUrlLoading(view, url);
if (Uri.parse(url).getHost().equals("callback")) {
// This is my web site, so do not override; let my WebView load the page
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
return false;
}
// Otherwise, the link is not for a page on my site, so launch another Activity that handles URLs
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url){
super.onPageFinished(view, url);
// Add YOUR CODE HERE
}
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
super.onReceivedError(view, errorCode, description, failingUrl);
Toast.makeText(LoadUrl.this, "Sorry! " + description, Toast.LENGTH_SHORT).show();
}
#Override
public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
super.onReceivedSslError(view, handler, error);
handler.proceed();
}
}
Here onPageFinished(WebView view, String url) will be called when webView has finished loading the current Page.
Hope it helps :)

Android - tracking browser activity

I'm looking to develop an application to track how long a site takes to load on the default android browser. Does the browser have any method of tracking when the site is fully loaded?

on page started and on page finished are the methods to
get the the start time and end time of loading of the webview
WebView search_webview;
search_webview = (WebView) findViewById(R.id.show_webview);
search_webview.setWebViewClient(new WebViewClient(){
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
}
#Override
public void onPageFinished(WebView view, String url) {
_dialog.dismiss();
super.onPageFinished(view, url);
}
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
try{
_dialog.dismiss();
Toast.makeText(ShowWebView.this, "NO Internet Connection Available", Toast.LENGTH_SHORT);
}catch (Exception e) {
// TODO: handle exception
}
}
});

Control the Link in WebView in android?

I have loaded an url in WebView in android, when i click a link in that loaded url in WebView , the link loaded in WebView ugly, to remove this problem I had used setIntialScale(50) , this made my initial url becomes small

Works like a charm.
Check it out
webview.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return true;
}
});

I am not sure but i think you need to implement WebViewClient.
For example:
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);
alertDialog.setTitle("Error!! Something went wrong");
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");

When you click the link, the phone is opening the new page in the browse instead of your webview. If you disable Url Overriding all subsequent pages will load in the webview and preserve the zoom.
webview.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
});