Develop Reference

Firing shouldOverrideUrlLoading()

I have some logic I want my WebView to apply whenever I try to change its url. For links within loaded pages it's fine, I can just do it by using shouldOverrideUrlLoading method on my custom WebViewClient.
But when I explicitly call loadUrl on my WebView, shouldOverrideUrlLoading is not fired (obviously, or it would produce an endless loop when calling loadUrl from within this method).
Is there a way to "preload" a url manually so the shouldOverrideUrlLoading method is called?
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if(url.startsWith("myapp://")
{
//Do something
}
else {
view.loadUrl(url);
}
return true;
}
This works fine when I click a link from within the rendered page. But if I call:
mWebView.loadUrl("myapp://whatever");
shouldOverrideUrlLoading() is not called. What I am asking is whether there's a way that I can pass a url to my webView so it gets passed through to shouldOVerrideUrlLoading() before actually loading it. (i.e. shouldOVerrideUrlLoading() is called whenever a new url is about to be loaded. That's the event I want to fire)
REF: Android's official WebView documentation

if your app version greater then 'N' you should use this function
shouldOverrideUrlLoading(WebView view, WebResourceRequest request)
check you function and version

If all you're trying to do is re-use your logic, just extract it into your WebViewClient and use that to load the url and then just delegate to this in shouldOverrideUrlLoading():
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return loadUrl(view, url);
}
public boolean loadUrl(WebView view, String url) {
if(url.startsWith("myapp://")
{
//Do something
}
else {
view.loadUrl(url);
}
return true;
}
Then instead of
mWebView.loadUrl("myapp://whatever");
You do:
mWebViewClient.loadUrl(mWebView, "myapp://whatever");

How to intercept url loads in WebView (android)?

I have a WebView in which I load a page with a custom link (like app://action). I registered the url schemes in the manifest file and when I click on the link, the onResume() method of my Activity is called with the correct data and it works OK.
My problem is that the WebView still try to load the link and my WebView ends up to show a "Web page unavailable" message. I don't want that.
How can I prevent the WebView to load the url?
Here's my code :
WebView banner = ...
banner.setWebViewClient(new WebViewClient() {
#Override
public void onLoadResource(WebView view, String url) {
if (url.startsWith("app://")) {
Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url), getContext(), Main.class);
//startActivity(i);
}
}
}
banner.loadUrl("url_to_the_banner");

Use WebViewClient.shouldOverrideUrlLoading instead.
public boolean shouldOverrideUrlLoading(WebView view, String url){
// handle by yourself
return true;
}
WebViewClient Reference
Updates: Method shouldOverrideUrlLoading(WebView, String) is deprecated in API level 24. Use shouldOverrideUrlLoading(WebView, WebResourceRequest) instead.

But it must return false otherwise, so:
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url){
if(url.startsWith(myString){
// handle by yourself
return true;
}
// ...
return false;
}

Link Does not open in webview?

I am developing an android application , in which i have certain Twits with a specific hash tag like #nokia
i have this link https://mobile.twitter.com/search/%23nokia should be open in webview without hiding my Tabs at the bottom.How can i do this?
i have already use the method
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
// This line we let me load only pages inside Firstdroid Webpage
if ( url.contains("firstdroid") == true )
/* Load new URL Don't override URL Link */
return false;
// Return true to override url loading (In this case do nothing).
return true;
}
any help

When you return true in this method, you should call:
view.loadUrl(url);

Yes, Olsavage is right. If you want to "override" the URL Loading, you need to return true + call view.loadUrl(url) before you actually return true
Your code should then be:
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
// This line we let me load only pages inside Firstdroid Webpage
if ( url.contains("firstdroid") == true )
/* Load new URL Don't override URL Link */
return false;
// Return true to override url loading (In this case do nothing).
view.loadUrl(url);
return true;
}
[edit]:
How about the %23 in your URL ? Is that what you want to achieve? Open the actual #hash in the web browser?

in the webview client, instead of the code.
webView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url); // open link in the same web view.
return true;
}
});

Android WebView, how to handle redirects in app instead of opening a browser

So right now in my app the URL I'm accessing has a redirect, and when this happens the WebView will open a new browser, instead of staying in my app. Is there a way I can change the settings so the View will redirect to the URL like normal, but stay in my app instead of opening a new browser?
Edit:
I want the redirecting URL, I just don't know how to create it, so the only way to get to that URL is through one that will cause a redirect to the one I want.
For example: When you go here: http://www.amazon.com/gp/aw/s/ref=is_box_/k=9780735622777 notice how it will redirect the URL to the actual product. In my app, if I open it in a new browser, it will do that just fine, however if I keep it in my app with a WebView, it will show up as though it's doing a search for k=9780735622777, like this: http://www.amazon.com/gp/aw/s/ref=is_s_?k=k%3D9780735622777&x=0&y=0 . OR, it will open the view in the browser and show what is appropriate. However, I want to keep everything in my app.

Create a WebViewClient, and override the shouldOverrideUrlLoading method.
webview.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url){
// do your handling codes here, which url is the requested url
// probably you need to open that url rather than redirect:
view.loadUrl(url);
return false; // then it is not handled by default action
}
});

According to the official documentation, a click on any link in WebView launches an application that handles URLs, which by default is a browser. You need to override the default behavior like this
myWebView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return false;
}
});

Just adding a default custom WebViewClient will do. This makes the WebView handle any loaded urls itself.
mWebView.setWebViewClient(new WebViewClient());

You will have to set your custom WebviewClient overriding shouldOverrideUrlLoading method for your webview before loading the url.
mWebView.setWebViewClient(new WebViewClient()
{
#SuppressWarnings("deprecation")
#Override
public boolean shouldOverrideUrlLoading(WebView webView, String url)
{
return shouldOverrideUrlLoading(url);
}
#TargetApi(Build.VERSION_CODES.N)
#Override
public boolean shouldOverrideUrlLoading(WebView webView, WebResourceRequest request)
{
Uri uri = request.getUrl();
return shouldOverrideUrlLoading(uri.toString());
}
private boolean shouldOverrideUrlLoading(final String url)
{
Log.i(TAG, "shouldOverrideUrlLoading() URL : " + url);
// Here put your code
return true; // Returning True means that application wants to leave the current WebView and handle the url itself, otherwise return false.
}
});
Checkout the example code for handling redirect urls and open PDF without download, in webview.
https://gist.github.com/ashishdas09/014a408f9f37504eb2608d98abf49500

Create a class that implements webviewclient and add the following code that allows ovveriding the url string as shown below.
You can see these [example][1]
public class myWebClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
On your constructor, create a webview object as shown below.
web = new WebView(this); web.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
Then add the following code to perform loading of urls inside your app
WebSettings settings=web.getSettings();
settings.setJavaScriptEnabled(true);
web.loadUrl("http://www.facebook.com");
web.setWebViewClient(new myWebClient());
web.setWebChromeClient(new WebChromeClient() {
//
//
}

Please use the below kotlin code
webview.setWebViewClient(object : WebViewClient() {
override fun shouldOverrideUrlLoading(view: WebView, url: String): Boolean {
view.loadUrl(url)
return false
}
})
For more info click here

In Kotlin, to navigate within same webView we needed to override the shouldOverrideUrlLoading for webview
If return type is true then navigation will be blocked If return
type is false then navigation will happen
object : WebViewClient() {
override fun shouldOverrideUrlLoading(view: WebView, request: WebResourceRequest): Boolean {
return true
}
}.also { webView.webViewClient = it }

#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
if (url.equals("your url")) {
Intent intent = new Intent(view.getContext(), TransferAllDoneActivity.class);
startActivity(intent);
}
}

Android WebView - Intercept clicks

I have written a simple helloworld app with a WebView which has a link to CNN on a simple.html page in my asset folder.
cnn.com
How can I capture the click on this on my Activity, stop the WebView from navigating, and then inform the Activity that "http://CNN.com" was clicked?

Then you have to set a WebViewClient to your WebView and override shouldOverrideUrlLoading and onLoadResource methods. Let me give you a simple example:
WebView yourWebView; // initialize it as always...
// this is the funny part:
yourWebView.setWebViewClient(yourWebClient);
// somewhere on your code...
WebViewClient yourWebClient = new WebViewClient(){
// you tell the webclient you want to catch when a url is about to load
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url){
return true;
}
// here you execute an action when the URL you want is about to load
#Override
public void onLoadResource(WebView view, String url){
if( url.equals("http://cnn.com") ){
// do whatever you want
}
}
}