Develop Reference

Android webview doesn't open api.whatsapp

I'm trying to open an api.whatsapp link from my webpage using the Android web view but I faced the error ERR_UNKNOWN_URL_SCHEME.
I have changed the shouldOverrideUrlLoading method several times trying to fix it but the intent never works. Have someone faced the same problem before?
This is the current version of my code:
public class MainActivity extends AppCompatActivity {
// public static final String TAG = MainActivity.class.getSimpleName();
private WebView mywebView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mywebView = (WebView) findViewById(R.id.activity_main_webview);
WebSettings webSettings = mywebView.getSettings();
mywebView.loadUrl("https://mypage");
webSettings.setJavaScriptEnabled(true);
mywebView.setWebViewClient(new WebViewClient());
}
public class myWebClient extends WebViewClient {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
//String url = request.getUrl().toString();
if (Uri.parse(url).getHost().equals("https://mypage")) {
return false;
}
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
startActivity(intent);
return true;
}
}
Any suggestions?

Add Validating to your shouldOverrideUrlLoading method like:
Patterns.WEB_URL.matcher(url).matches();

Reopened applciation does not load url in webview

I have a fragment with WebView inside to open url and login to some service and then receive some cookie. The issue is that when I open application and fragment inside activity, url loads into WebView normally, but when I close application (programmatically with activity.finishAndRemoveTask()) and open it again (manually) - url does not load. After next app restart (manually) everything goes back to normal. Url which I want to open has two redirects.
It is my fragment class:
public class MyFragment extends Fragment implements WebResourceClient.CookieListener {
private String URL = "https://someurl.com";
#OnClick(R.id.close)
public void detachFragment() {
FragmentManager manager = getFragmentManager();
if (manager != null) {
manager.popBackStackImmediate();
}
}
#BindView(R.id.web_container)
WebView webContainer;
#BindView(R.id.progress_bar)
ProgressBar progressBar;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.ny_fragment, container, false);
ButterKnife.bind(this, view);
startWebView();
return view;
}
#SuppressLint("SetJavaScriptEnabled")
private void startWebView() {
CookieManager cookieManager = CookieManager.getInstance();
cookieManager.removeAllCookies(null);
WebSettings settings = webContainer.getSettings();
settings.setJavaScriptEnabled(true);
settings.setDomStorageEnabled(true);
settings.setUseWideViewPort(true);
settings.setLoadWithOverviewMode(true);
settings.setLayoutAlgorithm(WebSettings.LayoutAlgorithm.SINGLE_COLUMN);
settings.setMixedContentMode(WebSettings.MIXED_CONTENT_ALWAYS_ALLOW);
settings.setMediaPlaybackRequiresUserGesture(false);
settings.setUserAgentString(Core.USER_AGENT_FOR_GOOGLE);
settings.setAppCacheEnabled(false);
webContainer.clearCache(true);
WebView.setWebContentsDebuggingEnabled(false);
webContainer.setWebViewClient(new WebResourceClient(this));
webContainer.setWebChromeClient(new WebChromeClient() {
#Override
public void onProgressChanged(WebView view, int newProgress) {
if (newProgress < 100) {
webContainer.setVisibility(View.INVISIBLE);
progressBar.setVisibility(View.VISIBLE);
} else {
webContainer.setVisibility(View.VISIBLE);
progressBar.setVisibility(View.INVISIBLE);
}
}
});
webContainer.loadUrl(URL);
}
#Override
public void onDestroyView() {
webContainer.stopLoading();
super.onDestroyView();
}
#Override
public void onReceiveCookie(String cookie) {
detachFragment();
...
}
#Override
public void showProgress() {
webContainer.setVisibility(View.INVISIBLE);
progressBar.setVisibility(View.VISIBLE);
}
}
It's my WebViewClient:
public class WebResourceClient extends WebViewClient {
private final static String someUrl = "https://someOtherUrl";
private CookieListener listener;
public WebResourceClient(CookieListener listener) {
this.listener = listener;
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, WebResourceRequest request) {
String url = request.getUrl().toString();
if (url.contains(someUrl)) {
listener.showProgress();
}
view.loadUrl(url);
return true;
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (url.contains(someUrl)) {
listener.lockWebView();
}
view.loadUrl(url);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
// if (url.contains(someUrl)) {
String cookies = CookieManager.getInstance().getCookie(url);
String cookie = getCookie(cookies);
if (!TextUtils.isEmpty(cookie)) {
view.stopLoading();
listener.onReceiveCookie(cookie);
}
super.onPageFinished(view, url);
}
private String getCookie(String cookies) {
...
}
public interface GoogleLoginListener {
void onReceiveCookie(String cookie);
void showProgress();
}
}
I open fragment like there:
MyFragment fragment = new MyFragment();
FragmentManager fm = getSupportFragmentManager();
FragmentTransaction tr = fm.beginTransaction();
tr.addToBackStack(fragment.getClass().getSimpleName());
tr.replace(R.id.fragment_root, fragment);
tr.commit();

How do you disable links, pages and references in a WebView?

I have a Web View in Android,and I open a html web page in it.But it's full of links and images,and when I click one of them,it loads in my webview. So I want to disable this behavior,so if I click on a link,don't load it. I've tried this solution and edited a bit for myself, but not worked.
Please give me a solution with full code. I'm new to Java and Android.
My Full code here:
public class MainActivity extends AppCompatActivity {
ProgressBar progressBar;
WebView webView;
String url="http://example.com";
TextView textView;
//to hide progressbar after loading part 1
LinearLayout liProgressContainer;
private String currentUrl;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
webView = (WebView) findViewById(R.id.webView);
textView = (TextView) findViewById(R.id.tvLoadingPercentage);
//to hide progressbar after loading part 2
liProgressContainer = (LinearLayout) findViewById(R.id.liProgressContainer);
webView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress) {
progressBar.setProgress(progress);
textView.setText(progress + " %");
}
});
webView.setWebViewClient(new MyWebViewClient());
WebSettings browserSetting = webView.getSettings();
browserSetting.setJavaScriptEnabled(true);
webView.loadUrl(url);
}
//back button function
#Override
public void onBackPressed() {
if (webView.canGoBack()) {
webView.goBack();
} else {
super.onBackPressed();
}
}
private class MyWebViewClient extends WebViewClient {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
liProgressContainer.setVisibility(View.VISIBLE);
super.onPageStarted(view, url, favicon);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
//progressBar.setVisibility(View.VISIBLE);
view.loadUrl(url);
return true;
//return super.shouldOverrideUrlLoading(view, url);
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
liProgressContainer.setVisibility(View.GONE);
//hide header part
}
}
}

You need to configure your shouldOverrideUrlLoading method in your MyWebViewClient class to only load a URL should it match your desired URL. Add a field to your MyWebViewClient class to store a URL and add a single-arg constructor.
private String desiredUrl;
public MyWebViewClient(String url) {
this.desiredUrl = url;
}
In your shouldOverrideUrlLoading method, check to see if the supplied URL is equal to your URL instance variable.
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if (desiredUrl.equals(url))
view.loadUrl(url);
return true;
}
When setting your web view client, pass your URL argument, e.g.
webView.setWebViewClient(new MyWebViewClient(url));

My WebView does not finish loading

Hi I have totally no idea why my webview is not call the onPageFinished method, and the it was showing the loading dialog all the time, I hope there is someone out there help me for my this issue. In the Android manifest file I already put the internet permission and also the network access state.
so this is my code:
public class MainActivity extends AppCompatActivity {
WebView mWebView;
RelativeLayout rLoading;
Map<String, String> header;
String urlToLoad;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView = (WebView) findViewById(R.id.webView);
rLoading = (RelativeLayout) findViewById(R.id.loading);
if ( isNetworkAvailable() == true ) //check if internet available or not
{
mWebView.setFocusable(true);
mWebView.setFocusableInTouchMode(true);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH);
mWebView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
mWebView.getSettings().setDomStorageEnabled(true);
mWebView.getSettings().setDatabaseEnabled(true);
mWebView.getSettings().setAppCacheEnabled(true);
mWebView.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY);
mWebView.setLayerType(View.LAYER_TYPE_SOFTWARE, null);
urlToLoad = "https://www.google.com/";
UsernamePasswordCredentials creds= new UsernamePasswordCredentials("username", "password");
Header credHeader = BasicScheme.authenticate(creds, "UTF-8", true);
header = new HashMap<String, String>();
header.put(credHeader.getName(), credHeader.getValue());
//show loading dialog
mWebView.loadUrl(urlToLoad, header);
mWebView.setWebViewClient(new WebViewClient(){
public void onPageFinished(WebView view, String url) {
rLoading.setVisibility(View.GONE);
}
});
}
else //Not connected
{
Toast.makeText(
this,
"No internet connection",
Toast.LENGTH_LONG
).show();
}
}
public boolean isNetworkAvailable() {
ConnectivityManager connectivityMgr = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo networkInfo = connectivityMgr.getActiveNetworkInfo();
/// if no network is available networkInfo will be null
if (networkInfo != null && networkInfo.isConnected()) {
return true;
}
return false;
}
#Override
public void onBackPressed() {
if(mWebView.canGoBack()){
mWebView.goBack();
}else {
super.onBackPressed();
}
}
}
Someone please help me

Try this Android WebView implementation:
webview= (WebView) findViewById(R.id.webview);
webview.loadUrl("www.google.com");
webview.setWebViewClient(new WebViewClient() {
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
//stop the ProgressBar
mProgressBar.setVisibility(View.INVISIBLE);
}
});

You can do it by this way
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.setWebViewClient(new WebViewClient() {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String urlNewString) {
return true;
}
#Override
public void onPageStarted(WebView view, String url, Bitmap facIcon) {
//SHOW LOADING IF IT ISNT ALREADY VISIBLE
}
#Override
public void onPageFinished(WebView view, String url) {
progressDialog.dismiss();
}
});

why the progress dialog doesn't disappear on some page?

this is my mainactivity, when i load some page the progress dialog doesn't disappear onpagefinished...where is the problem?
if you want to try the problem are with the page "accedi" or on the payment of the order
private WebView webView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
WebView webView = new WebView(this);
webView.setClickable(true);
webView.setFocusableInTouchMode(true);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setDomStorageEnabled(true);
webView.loadUrl("http://www.alldrink.it");
WebClientClass webViewClient = new WebClientClass();
webView.setWebViewClient(webViewClient);
WebChromeClient webChromeClient=new WebChromeClient();
webView.setWebChromeClient(webChromeClient);
setContentView(webView);
webView.setOnKeyListener(new View.OnKeyListener() {
#Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
if (event.getAction() == KeyEvent.ACTION_DOWN) {
WebView webView = (WebView) v;
switch (keyCode) {
case KeyEvent.KEYCODE_BACK:
if (webView.canGoBack()) {
webView.goBack();
return true;
}
break;
}
}
return false;
}
});
}
public class WebClientClass extends WebViewClient {
ProgressDialog pd = null;
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
pd = new ProgressDialog(MainActivity.this);
pd.setTitle("Attendere");
pd.setMessage("Caricamento in corso..");
pd.show();
}
#Override
public void onPageFinished(WebView view, String url) {
if (pd.isShowing()) {
pd.dismiss();
}
}
}
public class WebChromeClass extends WebChromeClient{
}
}

the dismiss() function is working, but your onPageStarted() has run two times, making dialog recreate again and look like it never disappear. Try changing your onPageStarted as:
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
if(!pd.isShowing())
{
pd.setTitle("Attendere");
pd.setMessage("Caricamento in corso..");
pd.show();
}
}