open a new browser from webview - android

I created an android app with webview.
Within the web page I have amazon banners.
If a user clicks on that banner I would like it to be open in the native android browser and not in webview.
I've tried several methods after searching and trying with no success.
When the banner is clicked - the app still shows the amazon site in webview mode.
Can anyone help me fix this issue ?
Your help is greatly appreciated...
Below is the code I use :
final WebView webView = (WebView) findViewById(R.id.webview);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebViewClient(new WebViewClient() {
#Override public boolean shouldOverrideUrlLoading(final WebView view, final String url) {
if(url.contains("amazon-adsystem.com")) {
Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(i);
}
view.loadUrl(url);
loadAd();
return true;
}
});
webView.loadUrl("http://starter_url");
loadAd();

The function shouldOverrideUrlLoading() should:
Returns True if the host application wants to leave the current
WebView and handle the url itself, otherwise return false.
So you have to change your code to something like:
webView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(final WebView view, final String url) {
if(url.contains("amazon-adsystem.com")) {
Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(i);
return true;
}
return false;
}
});

Related

How can i make a link to open in browser instead of WebView App

I created a WebView App and it's working fine but there is a link which I want it to open in the default browser instead of that app what can I do.
Add a WebViewClient to your webView (if not already added) and then override shouldOverrideUrlLoading () method:
webView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView webview, String url) {
if (url.contains(myUrl)) {
Intent intent= new Intent(Intent.ACTION_VIEW, myUrl);
context.startActivity(intent);
return true;
} else {
return super.shouldOverrideUrlLoading(webview, url);
}
}
}
This way your are telling your webview to not continue loading a specific url. Instead, launch the proper application (mostly a browser) to handle the url.

Android - Bug in Webview? Some URL's prompt webview to start external browser

I have a "NewsActivity" with a webview. When I start it from my main activity, links are opened in the webview correctly but, for some reason, some url's cause the webview to open but then to immediately launch the external browser. Checking the debug console I have not found any exception or other message thrown by webview as not being able to handle the url.
Please note that I am not talking about a link clicked after the webview has loaded the url/page.
I have also tried to activate javascript in the webview but to no avail.
Also, this happens for just some urls from the same domain (specifically a news website; also, I have no block url or override in place).
Here is one of the urls that fail to open in the webview: url_not_loaded
Here is the code that calls the "NewsActivity"
Intent intent = new Intent(this, NewsActivity.class);
intent.putExtra(MainActivity.EXTRA_MESSAGE, url);
startActivity(intent);
And here is the code in "NewsActivity"
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_news);
Intent intent = getIntent();
String url = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
mWebview = (WebView) findViewById(R.id.newsv);
Log.d(MainActivity.LOG_TAG, "URL: " + url);
mWebview.loadUrl(url);
}
If someone has a clue as to what may be happening or can suggest any idea, I'll be grateful.
Thanks!
Your URL's might have redirects. I encountered a similar problem.
Add this to your activity with the webview.
webView.setWebViewClient(new Callback());
Add this outside of onCreate.
private class Callback extends WebViewClient{ //Helps to open in webview instead of browser
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return (false);
}
}
It's not a bug.
You need to use WebViewClient.
mWebView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
view.loadUrl(url);
System.out.println("hello");
return false;
}
});
//Toast.makeText(this, "", Toast.LENGTH_SHORT);
mWebView.loadUrl(url);
You can set a newWebViewClient like this:
webView.setWebViewClient(new WebViewClient());
But to be more precisely you need to override the shouldOverrideUrlLoading method like this:
webView.setWebViewClient(new WebViewClient(){
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url){
view.loadUrl(url);
return true;
}});

How to move another activity in webview redirecting url

I have a webview to show a webpage. In that webpage button click event i'm redirecting to another page. From there another button click event im redirection to 3rd page. Instead of redirecting to 3rd page i need to show my next activity.
I'm using the following code but my first page itself not loading
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.login_page);
WebView webview = (WebView) findViewById(R.id.wvLogin);
setContentView(webview);
webview.setWebViewClient(new WebViewClient()
{
// Override URL
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
if(url.equals("http://My 3rd page redirecting URL"))
{
Intent i = new Intent(getApplicationContext(), APImages.class);
startActivity(i);
}
return true;
}
});
webview.loadUrl("http://Default URL to load first time");
}
Please tell me how to preceed it?
Try returning false when you are not handle the event. This is from the WebClient reference.
True if the host application wants to leave the current WebView and handle the url itself, otherwise return false.
Your code should be like this.
webview.setWebViewClient(new WebViewClient()
{
// Override URL
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
if(url.equals("http://My 3rd page redirecting URL"))
{
Intent i = new Intent(getApplicationContext(), APImages.class);
startActivity(i);
return true;
}
return false;
}
});
Try this variant:
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
if(url.equals("http://My 3rd page redirecting URL"))
{
Intent i = new Intent(getApplicationContext(), APImages.class);
startActivity(i);
} else {
webview.loadUrl(url);
}
return true;
}
Try onLoadResource. This should work for webview. Sometimes onOverride function doesnt work especially when you are calling an intent.

Trying to pass the URL from webview to browser

I am using a webview of height 60dp and i am passing a local html file to it, by default when i click a link in the webview it has to open the browser . But strangely its opens the links with in the webview, i also tried the webview client and trying to pass the response url to default browser through intent, but in vain..
my code snippet:
WebViewClient yourWebClient = new WebViewClient()
{
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
System.out.println("Inside WebViewClient the URL is....."+url);
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
return true;
}
};
WebView ad = (WebView) findViewById(R.id.webview1);
ad.getSettings().setJavaScriptEnabled(true);
ad.loadUrl(feed.getItem(position).getLink());
ad.getSettings().setLoadWithOverviewMode(true);
ad.getSettings().setUseWideViewPort(true);
ad.setInitialScale(100);
ad.setWebViewClient(yourWebClient);
ad.loadUrl("file:///android_asset/advertisement.htm");
Stop the current webview loading. As ad is the object of WebView, Try doing it this way:
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
System.out.println("Inside WebViewClient the URL is....."+url);
ad.stopLoading();
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
return true;
}
Also add this while adding settings for your WebView:
ad.getSettings().setSupportMultipleWindows(false);
Edit:
Try associating a chrome client with your webview and then check:
ad.setWebChromeClient(new MyWebChromeClient());
Hope this works for you.

Support for other protocols in Android webview

I've created a web view app, the page that is displayed features market:// links but upon clicking them I get the 404 screen along with the error that the protocol is not supported. I've tried looking through documentation but was unable to find anything relating to this. Any help is much appreciated.
For me the JavaScript thing wasn't a solution as the HTML is not under my control. So if you need to control this from the application side, then there is a relative simple solution: Derive from WebViewClientand inject the implementation using WebView.setWebViewClient(). All you need to override in your WebViewClientimplementation is the shouldOverrideUrlLoading method as shown here:
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url != null && url.startsWith("market://")) {
view.getContext().startActivity(
new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
return true;
} else {
return false;
}
}
For me this works fine.
HOPE THIS HELPS YOU
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
if (url.startsWith("market://")||url.startsWith("vnd:youtube")||url.startsWith("tel:")||url.startsWith("mailto:"))
{
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse(url));
startActivity(intent);
return true;
}
else{
view.loadUrl(url);
return true;
}
}
For the links to work you have to have the market app installed on your device/emulator.
Also your app need to request a permission to access network.
UPD:
as a workaround you can call java code from within the webview, for example if you generate links like this:
..
Define a javascript function named go():
<script type="text/javascript">
function go(link) {
if (handler) {
handler.go(link);
} else {
document.location = link;
}
}
</script>
You then can pass in a handler object into the WebView:
webview.addJavascriptInterface(new Handler() {
#Override
public void go(String marketUrl) {
//start market intent here
}
}, "handler");
Handler interface can be defined as follows:
public interface Handler{
public void go(String url);
}
Work for me:
webView = (WebView) findViewById(R.id.webView);
webView.setWebChromeClient(new WebChromeClient());
webView.getSettings().setPluginState(WebSettings.PluginState.ON);
webView.getSettings().setPluginState(WebSettings.PluginState.ON_DEMAND);
webView.setWebViewClient(new MyWebViewClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("http://myweb.com");
private class MyWebViewClient extends WebViewClient {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url != null && url.startsWith("whatsapp://")) {
view.getContext().startActivity(
new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
return true;
} else {
return false;
}
}
}
It is important to understand how the webview and its clients (webviewclient and webchromeclient) works. Please go through the http://therockncoder.blogspot.in/2014/04/understanding-androids-webchromeclient.html
In the webviewclient's shouldOverrideUrlLoading() method, you can decide if you want to open the link in new browser or within the webview. If you don't override this method, it will by default open the link in a new browser outside of the your android application.
If you want to open within webview, override the method as below
public boolean shouldOverrideUrlLoading(WebView view, String url) { <br>
Log.v("activity", "INSIDE WEBVIEW CLIENT ON shouldOverrideUrlLoading");
view.loadUrl(url);
return false; //need to understand return value based on usage
}
Schemes like whatsapp://send?text=Hello%20World! or market://details?id=xx.xx.xx will open the corresponding apps automatically if they are opened outside the webview and if that app is installed on the handset.
If you want to open certain links within webview and specific schemes outside webview, you need to override WebChromeClients onCreateWindow() method as explained in the link provided above. It should solve the purpose.
Instead of adding check for particular scheme, Modifying #sven solution, this will work for all schemes
public boolean shouldOverrideUrlLoading(WebView view, String url) {
String host= Uri.parse(url).getHost();
if (host == null) {
view.getContext().startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
return true;
}
view.loadUrl(url);
return false;
}
Simplest solution
Intent newApp = new Intent(Intent.ACTION_VIEW, Uri.parse(URL));
startActivity(newApp);

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