I am getting message 'Server hangup' when loading url into webView and this message is not implemented in either Android side or server side. If anyone knows how to solve this issue, Please help. Thanks
I have used following code:
private WebView mWebview;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mWebview = new WebView(this);
mWebview.getSettings().setJavaScriptEnabled(true);
webView.setWebChromeClient(new MyWebChromeClient(this));
mWebview .loadUrl("our server url");
setContentView(mWebview);
}
private class MyWebChromeClient extends WebChromeClient {
Context context;
public MyWebChromeClient(Context context) {
super();
this.context = context;
}
}
Please check screenshot
Google.com is secure domain. You have to use https://www.google.com instead of http://www.google.com.
Please use this method and set your website url :
Example :startWebView("https://stackoverflow.com");
private void startWebView(String url) {
WebSettings settings = webview.getSettings();
settings.setJavaScriptEnabled(true);
webview.setScrollBarStyle(View.SCROLLBARS_OUTSIDE_OVERLAY);
webview.getSettings().setBuiltInZoomControls(true);
webview.getSettings().setUseWideViewPort(true);
webview.getSettings().setLoadWithOverviewMode(true);
webview.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
}
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
Toast.makeText(getApplicationContext(), "Error:" + description, Toast.LENGTH_SHORT).show();
}
});
webview.loadUrl(url);
}
Webview shows you the HTML returned by the URL that has been loaded.
onReceivedError() will not be called if you get response containing the error message.
Check what you receive as HTML from server using the following code in onPageFinished().
webView.evaluateJavascript(
"(function() { return ('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>'); })();",
new ValueCallback<String>() {
#Override
public void onReceiveValue(String html) {
// displays the HTML received after the URL is loaded.
Log.e("#Eval", "Html -> " + html);
}
});
As you have mentioned that the message is not implemented in your app, it must have been be received from the server end.
Related
I want to be able to recognize when an error occurs and tell show a toast message with the error but I can never get them to call.
I also want to be able to tell when the webview starts navigating to a url and detect which url it's going to.
Unfortunately it just seems to ignore everything and I have no idea how to start a function or method or anything once this occurs.I don't really care how I go about determining when a page starts loading or an error occurs I just need a way that works.
public class MainActivity extends AppCompatActivity {
private WebView myWebView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myWebView = (WebView) findViewById(R.id.webview);
myWebView.setWebViewClient(new WebViewClient());
myWebView.setWebChromeClient(new WebChromeClient()
{
private boolean error;
public void onPageStarted(WebView view, String url, Bitmap favicon) {
onPageStarted(view, url, favicon);
Toast.makeText(getApplicationContext(), "page started:" + url, Toast.LENGTH_SHORT).show();
error = false;
}
public void onReceivedError( WebView view, int errorCode, String description, String failingUrl) {
error = true;
System.out.println("description error" + description);
view.setVisibility( View.GONE );
Toast.makeText(getApplicationContext(), "error:" + description, Toast.LENGTH_SHORT).show();
}
public void onPageFinished(WebView view, String url) {
if (!error) {
view.setVisibility( View.VISIBLE );
}
error = false;
Toast.makeText(getApplicationContext(), "page finished" + url, Toast.LENGTH_SHORT).show();
}
}
);
myWebView.setBackgroundColor(0);
WebSettings webSettings = myWebView.getSettings();
webSettings.setDefaultTextEncodingName("utf-8");
webSettings.setJavaScriptEnabled(true);
webSettings.setLoadWithOverviewMode(true);
webSettings.setAllowFileAccess(true);
// Other webview settings
myWebView.addJavascriptInterface(new MyJavascriptInterface(this), "Android");
myWebView.loadUrl("https://example.com/");
}
}
The onPageStarted(), onPageFinished(), and onReceivedError() methods are not defined in the WebChromeClient class. They're members of WebViewClient. You subclassed the wrong one.
If you add the #Override annotation above each method, your IDE should yell at you that those methods don't override anything in the super class, which is why that annotation is useful.
Simply move those overrides to the WebViewClient instance.
myWebView.setWebViewClient(new WebViewClient() {
private boolean error;
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
...
}
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
...
}
#Override
public void onPageFinished(WebView view, String url) {
...
}
}
);
myWebView.setWebChromeClient(new WebChromeClient());
I am loading a website in webview,we have used Ajax in website and its working fine on web browser and mobile browser also but in android webview ajax is not working no error is there in the console.Here is my code:-
public class Activity_WebView extends AppCompatActivity implements
ConnectivityReceiver.ConnectivityReceiverListener {
WebView webview;
ProgressDialog pro_dialog;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_web_view);
webview = (WebView) findViewById(R.id.webview);
webview.getSettings().setPluginState(WebSettings.PluginState.ON);
webview.setWebViewClient(new loadinsame());
pro_dialog = new ProgressDialog(Activity_WebView.this);
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setDomStorageEnabled(true);
webview.getSettings().setAllowUniversalAccessFromFileURLs(true);
boolean connection = checkConnection();
if (connection) {
webview.loadUrl("website url");
} else {
Toast.makeText(Activity_WebView.this, "Sorry! Not connected to
internet", Toast.LENGTH_SHORT).show();
dialog_Show(webview, "Please check you Inernet connect and Reload.",
false);
}
}
#Override
public void onNetworkConnectionChanged(boolean isConnected) {
if (!isConnected) {
Toast.makeText(Activity_WebView.this, "Sorry! Not connected to
internet", Toast.LENGTH_SHORT).show();
}
}
private class loadinsame extends WebViewClient {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
pro_dialog.setCancelable(false);
pro_dialog.setMessage("Loading...");
pro_dialog.show();
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
pro_dialog.dismiss();
}
#Override
public void onReceivedError(final WebView webview, WebResourceRequest
request, WebResourceError error) {
super.onReceivedError(webview, request, error);
pro_dialog.dismiss();
// dialog_Show(webview, "Error Occur, Do you want to Reload?", true);
}
}
#Override
public void onBackPressed() {
if (webview.canGoBack()) {
webview.goBack();
} else {
super.onBackPressed();
}
}
private boolean checkConnection() {
boolean isConnected = ConnectivityReceiver.isConnected();
return isConnected;
}
#Override
protected void onResume() {
super.onResume();
MyApplication.getInstance().setConnectivityListener(this);
}
}
when i inspect the website in chrome using emulator, find that my ajax remain pending and then cancel after sometime.
Thanks in advance.
Just promoting #Jeff Thomas comment, by setting
mWebView.getSettings().setDomStorageEnabled(true);
worked!!
When i enabled the java script, its working.
WebView myWebView = (WebView) findViewById(R.id.webview);
myWebView.loadUrl("");
myWebView.getSettings().setDomStorageEnabled(true);
myWebView.getSettings().setJavaScriptEnabled(true);
myWebView.setWebViewClient(new WebClient());
Solutions
If you want to load web url in WebView so you need follow my code It's code working fine and In web any type of script language used in web page.
public void webviewCallBack(String coverUrl) {
WebView WebView webView = (WebView) findViewById(R.id.web_view);
webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView.getSettings().setPluginState(WebSettings.PluginState.ON);
webView.getSettings().setAppCacheEnabled(true);
webView.getSettings().setDatabaseEnabled(true);
webView.getSettings().setDomStorageEnabled(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setJavaScriptEnabled(true);
webView.clearView();
webView.measure(100, 100);
webView.getSettings().setUseWideViewPort(true);
webView.getSettings().setLoadWithOverviewMode(true);
webView.setWebViewClient(new WebViewClient() {
// For api level bellow 24
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Log.d("weburl__", url);
if (url.startsWith("http") || url.startsWith("https")) {
// Return false means, web view will handle the link
return false;
} else if (url.startsWith("tel:")) {
// Handle the tel: link
handleTelLink(url);
// Return true means, leave the current web view and handle the url itself
return true;
}
return false;
}
// From api level 24
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
#Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
// Get the tel: url
String url = request.getUrl().toString();
Log.d("weburl_____", url);
if (url.startsWith("http") || url.startsWith("https")) {
// Return false means, web view will handle the link
return false;
} else if (url.startsWith("tel:")) {
// Handle the tel: link
handleTelLink(url);
// Return true means, leave the current web view and handle the url itself
return true;
}
return false;
}
});
// Load the url into web view
webView.loadUrl(coverUrl);
hoadler();
}
public void hoadler() {
Runnable task = new Runnable() {
public void run() {
material_design_progressbar.setVisibility(View.VISIBLE);
}
};
worker.schedule(task, 5, TimeUnit.SECONDS);
}
I hope this code is helpful for you!
Here is how to edit the AndroidManifes.xml:
Find AndroidManifest.xml file in application folder at:
android/app/src/main/AndroidManifest.xml
Locate the application subelement.
Add the following tag:
android:usesCleartextTraffic=”true”
The application subelement should now look like:
<application
android:name=”io.flutter.app.Test”
android:label=”bell_ui”
android:icon=”#`enter code
here`mapmap/ic_launcher”
android:usesCleartextTraffic=”true”>
Save the AndroidManifest.xml file.
I have users that receive a link to my website via email.(EG. example.com/special folder/file) When they click on the link it prompts them to open my app as it should. However I am unable to figure out how to load that link they clicked in my app. (Each user is sent a specific page tailored to them) From the research I have done all the examples are loading the website using:
String url ="http://example.com";
myview.loadUrl(url);
Again I am trying to load the orginal link they clicked on. Not the static URL.
If anyone can point me in the right direction or better yet provide a sample of how i would achieve this it would be much appreciated.
Update1
To put it simply It works like youtube. If you were sent a link via email to a youtube video it would prompt you to use the youtube app. Then load the video you were sent. All i need is my app to load the webpage the user was sent
Proper way of loading webview using ProgressDialog for user feedback.
private ProgressDialog dialog = new ProgressDialog(WebActivity.this);
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.webview);
webView = (WebView) findViewById(R.id.webView1);
String url="http://www.google.com";
webView.setWebViewClient(new WebViewClient() {
#Override
public void onPageFinished(WebView view, String url) {
if (dialog.isShowing()) {
dialog.dismiss();
}
}
});
dialog.setMessage("Loading..Please wait.");
dialog.setCanceledOnTouchOutside(false);
dialog.show();
webView.loadUrl(url);
WebSettings webSettings = webView.getSettings();
webSettings.setJavaScriptEnabled(true);
}
String url = "http://www.example.com";
Intent i = new Intent(Intent.ACTION_VIEW);
i.setData(Uri.parse(url));
startActivity(i);
webView = (WebView) findViewById(R.id.WebView1);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebViewClient(new WebViewClient() {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
showProgress();
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
hideProgress();
}
#Override
public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
super.onReceivedError(view, request, error);
}
});
webView.loadUrl("http://google.com");
I'm trying to use a facebook login button that uses JS Facebook SDK on Android Webview. When I click it open a new page and redirects to https://www.facebook.com/dialog/oauth... which is a blank page with a javascript code. And the webview stays here.
I'm using:
webview.getSettings().setJavaScriptEnabled(true);
webview.getSettings().setAppCacheEnabled(true);
webview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
Thank you!
You need to add logic to redirect back to the original url of your website.
In order to do this, you need to first create a new java class that extends the WebViewClient class and overrides the onPageFinished method like this:
public class CustomWebViewClient extends WebViewClient
{
#Override
public void onPageFinished(WebView view, String url) {
//https://www.facebook.com/dialog/permissions.request
//actually works for me, but I put the URL you say is coming up
//blank in there instead, whatever works for you:
if(url.startsWith("https://www.facebook.com/dialog/oauth")){
String redirectUrl = "http://www.mydomain.com/MyApp/";
view.loadUrl(redirectUrl);
return;
}
super.onPageFinished(view, url);
}
}
Second, just add it to your WebView:
webview.setWebViewClient(new CustomWebViewClient());
Once that page is finished loading, it will redirect back to your original page
I dont know what exactly i did at that time, but the problem was solved. I'll give you the code. Try finding out :)
WebView browser,mWebviewPop;
private void open(){
browser = (WebView)findViewById(R.id.webView1);
browser.getSettings().setLoadsImagesAutomatically(true);
browser.getSettings().setJavaScriptEnabled(true);
browser.getSettings().setAppCacheEnabled(true);
browser.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
browser.getSettings().setSupportMultipleWindows(true);
browser.setWebViewClient(new MyBrowser());
browser.setWebChromeClient(new MyCustomChromeClient());
mContext=this.getApplicationContext();
browser.loadUrl(target_url);
MainActivity.this.progressBar.setProgress(0);
browser.setDownloadListener(new DownloadListener() {
public void onDownloadStart(String url, String userAgent,
String contentDisposition, String mimetype,
long contentLength) {
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse(url));
startActivity(intent);
}
});
}
private class MyBrowser extends WebViewClient {
String redirectUrl = "MY URL";
private void noInternet() {
WebView webview = (WebView) findViewById(R.id.webView1);
RelativeLayout tryAgainLayout = (RelativeLayout)findViewById(R.id.tryAgainLayout);
RelativeLayout progressLayout = (RelativeLayout)findViewById(R.id.progressLayout);
tryAgainLayout.setVisibility(View.VISIBLE);
webview.setVisibility(View.GONE);
webview.destroy();
progressLayout.setVisibility(View.INVISIBLE);
}
public void visible(){
WebView webview = (WebView) findViewById(R.id.webView1);
RelativeLayout tryAgainLayout = (RelativeLayout)findViewById(R.id.tryAgainLayout);
RelativeLayout progressLayout = (RelativeLayout)findViewById(R.id.progressLayout);
tryAgainLayout.setVisibility(View.INVISIBLE);
webview.setVisibility(View.INVISIBLE);
progressLayout.setVisibility(View.VISIBLE);
}
public void unvisible(){
WebView webview = (WebView) findViewById(R.id.webView1);
RelativeLayout tryAgainLayout = (RelativeLayout)findViewById(R.id.tryAgainLayout);
RelativeLayout progressLayout = (RelativeLayout)findViewById(R.id.progressLayout);
tryAgainLayout.setVisibility(View.INVISIBLE);
webview.setVisibility(View.VISIBLE);
progressLayout.setVisibility(View.INVISIBLE);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
String host = Uri.parse(url).getHost();
if (host.equals(target_url_prefix))
{
if(mWebviewPop!=null)
{
mWebviewPop.setVisibility(View.GONE);
baseLayout.removeView(mWebviewPop);
mWebviewPop=null;
}
return false;
}
if(host.equals("m.facebook.com"))
{
return false;
}
view.loadUrl(url);
return true;
}
#Override
public void onReceivedError(WebView view, int errorCode,
String description, String failingUrl) {
noInternet();
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
visible();
}
#Override
public void onPageFinished(WebView view, String url) {
unvisible();
System.out.println("\n" +view.getUrl());
if(url.startsWith("https://m.facebook.com/v2.1/dialog/oauth")){
if(mWebviewPop!=null)
{
mWebviewPop.setVisibility(View.GONE);
baseLayout.removeView(mWebviewPop);
mWebviewPop=null;
}
view.loadUrl(redirectUrl);
return;
}
super.onPageFinished(view, url);
}
}
private class MyCustomChromeClient extends WebChromeClient
{
#Override
public boolean onCreateWindow(WebView view, boolean isDialog,
boolean isUserGesture, Message resultMsg) {
mWebviewPop = new WebView(mContext);
mWebviewPop.setVerticalScrollBarEnabled(false);
mWebviewPop.setHorizontalScrollBarEnabled(false);
mWebviewPop.setWebViewClient(new MyBrowser());
mWebviewPop.getSettings().setJavaScriptEnabled(true);
mWebviewPop.getSettings().setSavePassword(false);
mWebviewPop.setLayoutParams(new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.MATCH_PARENT));
baseLayout.addView(mWebviewPop);
WebView.WebViewTransport transport = (WebView.WebViewTransport) resultMsg.obj;
transport.setWebView(mWebviewPop);
resultMsg.sendToTarget();
return true;
}
#Override
public void onCloseWindow(WebView window) {
}
#Override
public void onProgressChanged(WebView view, int newProgress) {
MainActivity.this.setValue(newProgress);
super.onProgressChanged(view, newProgress);
}
}
OK so from what I can tell, what's happening here is that there are two "ways" for oauth to work, either it will call back "to aparent page" (like popup "log me in" that disappears), or it can redirect you to a login page, then to some other url (non popup style), after success or failure (kind of a chain forward). Unfortunately it appears WebView is not well suited for the "callback to the parent page" style, so you have to do some shenanigans like have a second WebView (jincy's answer here, or see also this).
How I get the web page's source from WebView?
I want to only enter www.google.com in my webview and When I entered this site, I want to get the source for example
String a=........;(source)
I am not sure how far this is going to be helpful. But I have used the below snippet to fetch a small html page's data. I hope it helps you.
Create a class like the one below,
class MyJavaScriptInterface
{
#SuppressWarnings("unused")
public void processHTML(final String html)
{
Log.i("processed html",html);
Thread OauthFetcher=new Thread(new Runnable() {
#Override
public void run() {
String oAuthDetails=null;
oAuthDetails=Html.fromHtml(html).toString();
Log.i("oAuthDetails",oAuthDetails);
}
});OauthFetcher.start();
}
}
Now in your onCreate(),
webview.getSettings().setJavaScriptEnabled(true);
webview.addJavascriptInterface(new MyJavaScriptInterface(), "HTMLOUT");
webview.setWebViewClient(new WebViewClient(){
#Override
public void onPageFinished(WebView view, final String url) {
String oAuthUrl=getString("www.google.com");
if(url.contains(oAuthUrl))
{
Log.i("Contains","Auth URL");
twitter_webview.loadUrl("javascript:window.HTMLOUT.processHTML('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>');");
}
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
progressDialog.show();
}
});
And now what happens is that, when your page finishes loading, the JavaScript class will be called, which would retrieve the page source and store it in a String as your requirement.
And For API 17
import android.webkit.JavascriptInterface;
public class MainActivity extends Activity {
final Context myApp = this;
#JavascriptInterface
public void processHTML(String html) {
if (html == null)
return;
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final WebView browser = (WebView) findViewById(R.id.webview);
browser.getSettings().setJavaScriptEnabled(true);
browser.addJavascriptInterface(this, "HTMLOUT");
browser.setWebViewClient(new WebViewClient() {
#Override
public void onPageFinished(WebView view, String url) {
browser.loadUrl("javascript:window.HTMLOUT.processHTML('<html>'+document.getElementsByTagName('html')[0].innerHTML+'</html>');");
}
});
browser.loadUrl("http://www.google.co.il");
}
}
If your minSdkVersion is 19 or greater you can use the following.
override fun onPageFinished(view: WebView?, url: String?) {
super.onPageFinished(view, url)
view?.evaluateJavascript("""(function() {
return "<html>" + document.getElementsByTagName('html')[0].innerHTML + "</html>";
})()""".trimMargin()) {
console.log(it)
}
}