There is a WebView which loads mobile-optimized URL (webpage). But when I click on a link, it does not load inside of the WebView (inside of the app), but mobile browser opens.
How to prevent this?
I tried overloading URLs via shouldOverrideUrlLoading(), but it did not help.
This is a code.
webView = (WebView) findViewById(R.id.webview);
WebSettings webSettings = webView.getSettings();
webSettings.setPluginsEnabled(true);
if (Build.VERSION.SDK_INT > 7) {
webSettings.setPluginState(WebSettings.PluginState.ON);
}
webSettings.setJavaScriptEnabled(true);
webView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.equals(url)) {
view.loadUrl(url);
return true;
}
return false;
}
#Override
public void onLoadResource(WebView view, String url) {
}
});
webView.loadUrl("http://some-url.com");
EDIT
Does GET or POST posting methods have anything with links' clicks open mobile web browser???
Return true instead of false in shouldOverrideUrlLoading.
From the documentation:
shouldOverrideUrlLoading returns True if the host application wants to
leave the current WebView and handle the url itself, otherwise return
false.
Related
I have a webview that display the google page and i want to do something when the search button in the google page is pressed is it possible ?
here is my webview :
WebView wb=(WebView) findViewById(R.id.webView);
wb.getSettings().setJavaScriptEnabled(true);
wb.getSettings().setLoadsImagesAutomatically(true);
wb.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
wb.loadUrl("https://www.google.com");
You can use WebViewClient to listen for url changes. It doesn't exactly allow to listen for that specific button, but you can just check the url, like so:
WebView wv = (WebView) findViewById(R.id.webView);
WebSettings ws = wv.getSettings();
ws.setJavaScriptEnabled(true);
WebViewClient wvc = new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
boolean isSearch = url.startsWith("https://www.google.com/search");
if (isSearch) {
Log.d("WebView", "search clicked");
return true;
}
return false;
}
};
wv.setWebViewClient(wvc);
wv.loadUrl("https://www.google.com");
I know this is late, but yes you can. You have to set up a JavaScript event listener as a url query to load on Android's side.
..
webView.addJavascriptInterface(new JSInterface(), "SearchClicked");
webView.setWebViewClient(new WebViewClient() {
#Override
public void onPageFinished(WebView view, String url) {
String query =
"document.getElementsByClassName('BwoPOe').item(0).addEventListener('click',
function() {SearchClicked.doTasks()}, false);";
webView.loadUrl("javascript:" + query);
}
});
webView.loadUrl("https://images.google.com/");
..
Here when loading the WebView, you're getting the Google search button by getting a class name called BwoPOe, and setting it's event listener to call the JSInterface method doTasks.
You can find out the button class name using the Chrome's inspect element tool.
private class JSInterface {
#JavascriptInterface
public void boundMethod(String html) {
// do something...
}
}
trying to load a simple web page in WebView as below
alway leads to the fact that the browser is being launched with it.
The following code I wrote in my main activity besinde defining
"uses-permission android:name="android.permission.INTERNET" "
in the manifest. There is no Exception thrown which I verified with the catch block.
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
try {
WebView myWebView = (WebView) findViewById(R.id.myWebView);
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
myWebView.loadUrl("http://www.google.com");
} catch (Exception e) {
Log.e("MyApp", e.getMessage());
}
}
I cannot imagine what coult be simpler than my scenario. I guess as I do not do things like clicking a link
it is not necessary to do things like
// By default, redirects cause jump from WebView to default
// system browser. Overriding url loading allows the WebView
// to load the redirect into this screen.
mWebView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return false;
}
});
Do you have any Idea what could go wrong here?
In my very first example I do not use setWebViewClient(... at all but also in that case the browser opens instead of loading the side into the web view.
Thanks and Regards
Dieter
By returning fase in shouldOverrideUrlLoading(), you're instructing the WebView to ignore loading the URL and open the device's default browser instead.
You'll want to replace the contents of that function with:
// By default, redirects cause jump from WebView to default
// system browser. Overriding url loading allows the WebView
// to load the redirect into this screen.
mWebView.setWebViewClient(new WebViewClient() {
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
});
I have a android code like this:
WebView myWebView = (WebView) findViewById(R.id.webView1);
WebSettings webSettings = myWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
myWebView.loadUrl("http://test.com");
the problem is, when I start the app, it is opend in a new browser intend and not in my webView of the app.
how to avoid this?
Add a WebViewClient. This will prevent the default browser to open the URL (or get a selection dialog when there is no default)
myWebView.setWebViewClient(new WebViewClient());
More information can be found on Android website: http://developer.android.com/guide/webapps/webview.html
With the WebViewClient you can do more things, like preventing to load an URL, or change the URL.
private class MyWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (Uri.parse(url).getHost().equals("www.example.com")) {
// This is my web site, so do not override; let my WebView load the page
return false;
}
// Otherwise, the link is not for a page on my site, so launch another Activity that handles URLs
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
return true;
}
}
when I create webview application to view any website on same webview not browser it works fine but when I click on any link in that website it opens in browser ? how to load all internal links/pages/sections when user click on them at same webview ?
Java version:
You only need to set a WebViewClient for your WebView and then all links will be opened it the same WebView:
webView.setWebViewClient(new WebViewClient());
private class myCustomWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
//here load the url in your webview
webview.loadUrl(url);
return true;
}
And this for set in your webview
webView.setWebViewClient(new myCustomWebViewClient());
Kotlin version.
webView.webViewClient = WebViewClient()
You should add a webViewClient of your own.
WebView myWebView = (WebView) findViewById(R.id.webview);
myWebView.setWebViewClient(new MyWebViewClient());
in the webViewClient you can override the shouldOverrideUrlLoading() method to be like:
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (Uri.parse(url).getHost().equals("www.example.com")) {
// This is my web site, so do not override; let my WebView load the page
return false;
}
// Otherwise, the link is not for a page on my site, so launch another Activity that handles URLs
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
return true;
}
I hope you find it helpful.
I have searched and read a lot of posts but can not figure out how to do it in my code.
I want to use geolocation in my app and need to view in webChromeClient in stead of webViewClient which I use for the html files now and the links does stay in the same view.
When I change this to webChromeClient, the html links, like <a href="http://url/file.php?q=123", are suddenly opening in the browser!
How can I prevent this?
myWebView = new WebView(this);
myWebView.getSettings().setJavaScriptEnabled(true);
myWebView.getSettings().setLoadWithOverviewMode(true);
myWebView.getSettings().setUseWideViewPort(true);
myWebView.getSettings().setGeolocationEnabled(true);
myWebView.setWebChromeClient(new WebChromeClient() {
public void onGeolocationPermissionsShowPrompt(String origin, android.webkit.GeolocationPermissions.Callback callback) {
callback.invoke(origin, true, false); }
});
myWebView.loadUrl("file:///android_asset/HTML/index.html");
setContentView(myWebView);
WebChromeClient doesn't contain the shouldOverrideUrlLoading method, the WebViewClient does. Remember the "WebView" can and does use both WebViewClient and WebChromeClient at the same time if specified. The WebViewClient adds methods not available to you with no client assigned (keeping navigation in the webview). The same with the WebChromeClient has specific methods it can use (get page title on load for example).
So you can build your code like this:
WebView web = (WebView)findViewById(R.id.web);
WebSettings webSettings = web.getSettings();
webSettings.setJavaScriptEnabled(true);
webSettings.setGeolocationEnabled(true);
webSettings.setSupportMultipleWindows(true); // This forces ChromeClient enabled.
web.setWebChromeClient(new WebChromeClient(){
#Override
public void onReceivedTitle(WebView view, String title) {
getWindow().setTitle(title); //Set Activity tile to page title.
}
});
web.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return false;
}
});
I was able to get around this by setting a dummy WebViewClient in addition to the WebChromeClient. Not sure why, but when I take out this line the web page starts opening in the browser again.
mBrowser.setWebViewClient(new WebViewClient());
To open links in the browser you can use an intent in the shouldOverrideUrlLoading method to launch the URL in a browser versus using your webview to handle the link:
webView.setWebViewClient(new WebViewClient(){
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url != null && url.startsWith("http://")) {
view.getContext().startActivity(
new Intent(Intent.ACTION_VIEW, Uri.parse(url)));
return true;
} else {
return false;
}
}
}
If you want to load in the webview use:
WebViewClient yourWebClient = new WebViewClient()
{
// Override page so it's load on my view only
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
// This line we let me load only pages with an anchor tag
if ( url.contains("url") == true )
//Load new URL Don't override URL Link
return false;
// Return true to override url loading (In this case do nothing).
return true;
}
};