Develop Reference

How to use private url in webView?

I am using webView in my Android app for playing private videos that mean users must not be able to get the URL from the webView even if some error occurs. But when an error occurs as server error etc then webView shows the url- 'can't load URLs www.example.com' Now how to prevent this. Below is my code.
String uri = "https://example.com";
webView.setWebViewClient(new WebViewClient() {
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
#Override
public boolean shouldOverrideUrlLoading(WebView webView, WebResourceRequest request) {
webView.loadUrl(request.getUrl().toString());
return true;
}
});
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
webView.loadData(vimeoVideo, "text/html", "utf-8");

You can try something like this:
boolean isPageError = false;
webView.setWebViewClient(new WebViewClient() {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
isPageError = false;
}
#Override
public void onPageFinished(WebView view, String url) {
if (isPageError){
webview.setVisibility(View.GONE);
txt_error.setVisibility(View.VISIBLE);
txt_error.setText("error message");
}
}
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
isPageError = true;
}
});
Basically make your own custom error page and display it. Hope this helps.

use this :
webView.setWebViewClient(new WebViewClient() {
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
// show custom message error here
}
});

WebView: How to load .php file in the 8.0 WebView

i am trying load a .php file in WebView. it was working properly before API level 28 after i updated to API level 28 its not working its showing white screen. nothing is showing i tried all the options.
Here is the code
I am added the safe browsing false in the manifest file also.
I tried searching in the google nothing is helped me if any one done please help in this case to resolve.
String url="https://xxx/xxx/abc.php";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
handleSSLHandshake();
WebView mWebView = (WebView) findViewById(R.id.webView);
// PackageInfo webViewPackageInfo = null;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
// webViewPackageInfo = WebView.getCurrentWebViewPackage();
mWebView.getSettings().setSafeBrowsingEnabled(false);
// Log.d("MY_APP_TAG", "WebView version: " + webViewPackageInfo.versionName);
}
WebViewClientImpl webViewClient = new WebViewClientImpl(this);
mWebView.setWebViewClient(webViewClient);
mWebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
mWebView.getSettings().setBuiltInZoomControls(false);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl(url);
if (18 < Build.VERSION.SDK_INT ){
//18 = JellyBean MR2, KITKAT=19
mWebView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
}
}
public class WebViewClientImpl extends WebViewClient {
private Activity activity = null;
public WebViewClientImpl(Activity activity) {
this.activity = activity;
}
#Override
public boolean shouldOverrideUrlLoading(WebView webView, String url) {
webView.loadUrl(url);
// Log.i(TAG,url);
return true;
}
#Override
public void onLoadResource(WebView view, String url) {
super.onLoadResource(view, url);
}
#Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
super.onReceivedError(view, request, error);
}
#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);
}
#Override
public void onPageFinished(WebView view, String url) {
}
}

I solved my problem. it was the certificates issues, i just added the following code, its working fine now
#TargetApi(Build.VERSION_CODES.N)
#Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
view.loadUrl(request.getUrl().toString());
return true;
}
#Override
public void onReceivedSslError(WebView view, SslErrorHandler handler, SslError error) {
handler.proceed();
}

How to proceed/ignore errors while loading webview in android?

I am trying to load a url using webview in android. This is how my webview looks like
public class WebViewFragment extends Fragment {
private static final String LOG_TAG = WebViewFragment.class.getName();
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.web_view_fragment, container, false);
init(rootView);
return rootView;
}
private void init(View rootView) {
Bundle bundle = getArguments();
ImageView backButtonIV = (ImageView) rootView.findViewById(R.id.backButtonImage);
backButtonIV.setOnClickListener(new PopBackStackClickListener(getActivity()));
String title = bundle.getString(BundleConstants.WEB_HEADER_TEXT);
TextView headerTextTV = (TextView) rootView.findViewById(R.id.pageTitle);
headerTextTV.setText(title);
WebView webView = (WebView) rootView.findViewById(R.id.webView);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setLoadsImagesAutomatically(true);
webView.setWebViewClient(new MyWebView());
String urlToLoad = bundle.getString(BundleConstants.WEB_URL);
Log.d(LOG_TAG, "Opening url :" + urlToLoad);
webView.loadUrl(urlToLoad);
}
private class MyWebView extends WebViewClient {
#SuppressWarnings("deprecation")
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
super.onReceivedError(view, request, error);
}
#Override
public WebResourceResponse shouldInterceptRequest(WebView view, WebResourceRequest request) {
return super.shouldInterceptRequest(view, request);
}
#Override
public void onReceivedHttpError(WebView view, WebResourceRequest request, WebResourceResponse errorResponse) {
super.onReceivedHttpError(view, request, errorResponse);
}
#TargetApi(Build.VERSION_CODES.N)
#Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
view.loadUrl(request.getUrl().toString());
return true;
}
}
}
I put a breakpoint on onReceivedHttpEror and found that there were two "not found" errors. Basically there are two .png files that is not found. The webview for this reason stops loading the page. How can I ignore these errors and proceed? Because outside of android, if I try to open the link the web page loads fine and the errors are just logged in console. But it doesn't hamper the loading of the page. How can I achieve the same in android webview and load the page successfully?

Try to replace the code in your overrides of onReceivedError and onReceivedHttpError with simply logging (do not call super).

Try this, if you don´t call super it should work:
#Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
Log.d(LOG_TAG, "onReceivedError :" + error);
}
#Override
public void onReceivedHttpError(WebView view, WebResourceRequest request, WebResourceResponse errorResponse) {
Log.d(LOG_TAG, "onReceivedHttpError:" + errorResponse);
}

web view url goes to browser .how to do avoid and open in same web view?

here my code...am already implemented WebViewClient concept.it works well in web view..In my App have content saring via fb,twitter,g+,,,fb also login and open in webview...but when am click share to fb icon in my app after that all process will work on browser..but i want all process in webview only...
oncreate
webView = (WebView) findViewById(R.id.webView1);
webView.setClickable(true);
webView.setFocusableInTouchMode(true);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebViewClient(new myWebClient());
if (Build.VERSION.SDK_INT < 8) {
...
} else {
webView.getSettings().setPluginState(WebSettings.PluginState.ON);
}
webView.loadUrl("www.example.com.");
WebViewClient
public class myWebClient extends WebViewClient {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
}
public void onLoadResource (WebView view, String url) {
}
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
webView.loadUrl("file:///android_asset/myerrorpage.html");
}
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// TODO Auto-generated method stub
progress.setVisibility(View.VISIBLE);
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
progress.setVisibility(View.GONE);
}
}

You must override your shouldOverrideUrlLoading() method in WebViewClient class and following code
#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;
}
Go through the documentation for more information.

Use a if clause in your shouldOverrideUrlLoading method that returns false;
Example from Building web apps in web views
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;
}

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();
}
}