Develop Reference

How to handle multiple deeplinks for android app

I have created an Android app. Whenever someone opens the website through the app, it goes to the exact link. But if the user opens another link, the app is still on the previous opened link. You can check the app here: https://play.google.com/store/apps/details?id=app.freeairdrop.io
Send these 2 link to yourself on Telegram, or Whatsapp:
https://freeairdrop.io/airdrop/morpher.html
https://freeairdrop.io/airdrop/simbcoin.html
Now open the first link in my app, when prompted to choose application. Switch back to Telegram/whatsapp, and click on second link. My app will open, but it's still on that page(first link).Nothing happens, the app is not able to load second link, unless app is closed.
MainActivity.java code:
package app.freeairdrop.io;
import...
public class MainActivity extends Activity{
private ProgressBar progressBar;
private WebView webView;
private SwipeRefreshLayout mySwipeRefreshLayout;
private boolean mShouldPause;
#SuppressLint("SetJavaScriptEnabled")
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
progressBar.setMax(100);
webView = (WebView) findViewById(R.id.webView);
webView.setWebViewClient(new WebViewClientDemo());
webView.setWebChromeClient(new WebChromeClientDemo());
mySwipeRefreshLayout = (SwipeRefreshLayout) this.findViewById(R.id.swipeContainer);
mySwipeRefreshLayout.setOnRefreshListener(
new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
webView.reload();
mySwipeRefreshLayout.setRefreshing(false);
}
}
);
// ATTENTION: This was auto-generated to handle app links.
Intent appLinkIntent = getIntent();
String appLinkAction = appLinkIntent.getAction();
Uri appLinkData = appLinkIntent.getData();
if (getIntent().getExtras() != null) {
if (appLinkData == null){
webView.loadUrl("https://freeairdrop.io/");
}else
webView.loadUrl(String.valueOf(appLinkData));
} else if (getIntent().getExtras() == null){
webView.loadUrl("https://freeairdrop.io/");
}webView.reload();
}
private class WebViewClientDemo extends WebViewClient {
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
super.onReceivedError(view, errorCode, description, failingUrl);
Toasty.error(getApplicationContext(), "No Internet, pull down to refresh when you're connected to internet", Toast.LENGTH_LONG, true).show();
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Uri uri = Uri.parse(url);
if (uri.getHost() != null && (url.startsWith("https://freeairdrop.io/") || url.startsWith("https://www.freeairdrop.io/"))) {
return false;
}
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
view.getContext().startActivity(intent);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
progressBar.setVisibility(View.GONE);
progressBar.setProgress(100);
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
progressBar.setVisibility(View.VISIBLE);
progressBar.setProgress(0);
}
}
private class WebChromeClientDemo extends WebChromeClient {
public void onProgressChanged(WebView view, int progress) {
progressBar.setProgress(progress);
}
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
webView.goBack();
return true;
}
else {
}
return super.onKeyDown(keyCode, event);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
#Override
// This method is used to detect back button
public void onBackPressed() {
if (this.webView.canGoBack()) {
this.webView.goBack();
return;
}
else {
// Let the system handle the back button
super.onBackPressed();
}
}
}
AndroidManifest Code:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="app.freeairdrop.io">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<application
android:appCategory="productivity"
android:hardwareAccelerated="true"
android:allowBackup="true"
android:fullBackupContent="true"
android:icon="#mipmap/ic_launcher"
android:roundIcon="#mipmap/ic_launcher_round"
android:label="#string/app_name"
android:theme="#style/AppTheme"
android:name=".ApplicationClass"
tools:ignore="GoogleAppIndexingWarning">
<activity
android:name="app.freeairdrop.io.MainActivity"
android:label="#string/app_name"
android:configChanges="orientation|screenSize|screenLayout"
android:resizeableActivity="false"
android:supportsPictureInPicture="false"
android:launchMode="singleInstance"
>
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:scheme="https"
android:host="freeairdrop.io" />
</intent-filter>
</activity>
</application>
</manifest>

Setting android:launchMode="singleInstance" to the activity will cause only one instance of that activity to run. Meaning when your activity has been opened once via deeplink that instance is running. When you open the second link you expect your UI to get updated but since the instance was still running the activity's onCreate does not get called, which is why you see the views from earlier link.( Another point is when singleInstance is set it won't allow any other activity in stack.)
You can get more info in the official docs .
Now, even though onCreate is never called but onResume and onNewIntent methods do get called when singleInstance is set. Though onNewIntent is usually mentioned to work with singleTop, from my experience it does get called on when any of the three single flags are set.
So you need to override either of the two and write the code to update your UI in these. Also note that onResume does get called when your activity is created the very first time after onCreate so if that's where you place the code you might want to optimize to avoid reloading the same thing twice and everytime onResume gets called like after returning from background. In which case onNewIntent() does seem like a better option.
Hope this was of some help to you.
Update: As requested, you can find the edited code below
package app.freeairdrop.io;
import...
public class MainActivity extends Activity{
private ProgressBar progressBar;
private WebView webView;
private SwipeRefreshLayout mySwipeRefreshLayout;
private boolean mShouldPause;
#SuppressLint("SetJavaScriptEnabled")
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
progressBar.setMax(100);
webView = (WebView) findViewById(R.id.webView);
webView.setWebViewClient(new WebViewClientDemo());
webView.setWebChromeClient(new WebChromeClientDemo());
mySwipeRefreshLayout = (SwipeRefreshLayout) this.findViewById(R.id.swipeContainer);
mySwipeRefreshLayout.setOnRefreshListener(
new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
webView.reload();
mySwipeRefreshLayout.setRefreshing(false);
}
}
);
// call your method here to manage the intent
manageIntent(getIntent());
}
/* Simply moved your code which handles the intent to a common method
* Call this method from onCreate so that when first instance of activity gets created it handles it
* Similarly call it from onNewIntent to manage the new link you get
* You just need to pass the respective intents from the methods
*/
public void manageIntent(Intent intent) {
// ATTENTION: This was auto-generated to handle app links.
Intent appLinkIntent = intent;
String appLinkAction = appLinkIntent.getAction();
Uri appLinkData = appLinkIntent.getData();
if (getIntent().getExtras() != null) {
if (appLinkData == null){
webView.loadUrl("https://freeairdrop.io/");
}else
webView.loadUrl(String.valueOf(appLinkData));
} else if (getIntent().getExtras() == null){
webView.loadUrl("https://freeairdrop.io/");
}
}
// override to get the new intent when this activity has an instance already running
#Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
// again call the same method here with the new intent received
manageIntent(intent);
}
private class WebViewClientDemo extends WebViewClient {
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
super.onReceivedError(view, errorCode, description, failingUrl);
Toasty.error(getApplicationContext(), "No Internet, pull down to refresh when you're connected to internet", Toast.LENGTH_LONG, true).show();
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Uri uri = Uri.parse(url);
if (uri.getHost() != null && (url.startsWith("https://freeairdrop.io/") || url.startsWith("https://www.freeairdrop.io/"))) {
return false;
}
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
view.getContext().startActivity(intent);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
progressBar.setVisibility(View.GONE);
progressBar.setProgress(100);
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
progressBar.setVisibility(View.VISIBLE);
progressBar.setProgress(0);
}
}
private class WebChromeClientDemo extends WebChromeClient {
public void onProgressChanged(WebView view, int progress) {
progressBar.setProgress(progress);
}
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
webView.goBack();
return true;
}
else {
}
return super.onKeyDown(keyCode, event);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
#Override
// This method is used to detect back button
public void onBackPressed() {
if (this.webView.canGoBack()) {
this.webView.goBack();
return;
}
else {
// Let the system handle the back button
super.onBackPressed();
}
}
}
See if this works for you and let me know.

The webview app opens with a blank white screen

I have created webview app, and the app opens up with a with a blank white screen. It does not load anything even on reloading the webpage using swipetorefresh
MainActivity.java
package app.freeairdrop.io;
import ...
public class MainActivity extends Activity{
private ProgressBar progressBar;
private WebView webView;
private SwipeRefreshLayout mySwipeRefreshLayout;
#SuppressLint("SetJavaScriptEnabled")
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
progressBar = (ProgressBar) findViewById(R.id.progressBar);
progressBar.setMax(100);
webView = (WebView) findViewById(R.id.webView);
webView.setWebViewClient(new WebViewClientDemo());
webView.setWebChromeClient(new WebChromeClientDemo());
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
webView.getSettings().setPluginState(WebSettings.PluginState.ON);
// webView.getSettings().setMediaPlaybackRequiresUserGesture(false);
webView.loadUrl("https://freeairdrop.io/");
mySwipeRefreshLayout = (SwipeRefreshLayout) this.findViewById(R.id.swipeContainer);
mySwipeRefreshLayout.setOnRefreshListener(
new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
webView.reload();
mySwipeRefreshLayout.setRefreshing(false);
}
}
);
// ATTENTION: This was auto-generated to handle app links.
Intent appLinkIntent = getIntent();
String appLinkAction = appLinkIntent.getAction();
Uri appLinkData = appLinkIntent.getData();
webView.loadUrl(String.valueOf(appLinkData));
}
private class WebViewClientDemo extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
Uri uri = Uri.parse(url);
if (uri.getHost() != null && (url.startsWith("https://freeairdrop.io/") || url.startsWith("https://www.freeairdrop.io/"))) {
return false;
}
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
view.getContext().startActivity(intent);
return true;
}
#Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
progressBar.setVisibility(View.GONE);
progressBar.setProgress(100);
}
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
progressBar.setVisibility(View.VISIBLE);
progressBar.setProgress(0);
}
}
private class WebChromeClientDemo extends WebChromeClient {
public void onProgressChanged(WebView view, int progress) {
progressBar.setProgress(progress);
}
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && webView.canGoBack()) {
webView.goBack();
return true;
}
else {
// finish();
}
return super.onKeyDown(keyCode, event);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
return true;
}
#Override
// This method is used to detect back button
public void onBackPressed() {
if (this.webView.canGoBack()) {
this.webView.goBack();
return;
}
Builder dialog = new Builder(this);
// dialog.setTitle((CharSequence) "Exit App");
dialog.setMessage((CharSequence) "Do You Want To Exit The App ?");
dialog.setPositiveButton((CharSequence) "YES", (OnClickListener) new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
MainActivity.this.finish();
}
});
dialog.setCancelable(false);
dialog.setNegativeButton((CharSequence) "CANCEL", (OnClickListener) new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
}).show();
}
}
AndroidManifest.xml File:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="app.freeairdrop.io"
>
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<application
android:appCategory="productivity"
android:hardwareAccelerated="true"
android:allowBackup="true"
android:fullBackupContent="true"
android:icon="#mipmap/ic_launcher"
android:label="#string/app_name"
android:theme="#style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">
<activity
android:name="app.freeairdrop.io.MainActivity"
android:label="#string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter android:autoVerify="true">
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
<data
android:scheme="https"
android:host="freeairdrop.io" />
</intent-filter>
</activity>
</application>
</manifest>
The deeplinks to app are working perfectly great, just the app opens everytime with a blank screen.

try
webView.getSettings().setDomStorageEnabled(true)

First, please you check HAXM /hrdware accelerate is Run and installed on android studio.
Second, please use chrome browser as default client browser for your webview on your device.
Third, uninstall your apk installed for this project, and restart device, and then , create new build/install this project or your device....
and you can follow the instruction for other like, enable hardware accelerate in manifest, using webchromeclient and etc... it work for me

How to disable webview navigate to another page?

Please help me. How to disable webview open new page ? I want to disable this behaviour, so if I click on a link, don't load it. I've tried this solution and edited a bit for myselft, but not worked. My webviewclient code:
public class MainActivity extends AppCompatActivity {
private WebView webView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webView = (WebView) findViewById(R.id.webView);
webView.setWebViewClient(new myWebClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("http://example.com");
webView.setWebViewClient(new WebViewClient() {
public void onReceivedError(WebView webView, int errorCode, String description, String failingUrl) {
try {
webView.stopLoading();
} catch (Exception e) {
}
if (webView.canGoBack()) {
webView.goBack();
}
webView.loadUrl("about:blank");
AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
alertDialog.setTitle("Error");
alertDialog.setMessage("Check your internet connection and try again.");
alertDialog.setButton(DialogInterface.BUTTON_POSITIVE, "Try Again", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
finish();
startActivity(getIntent());
}
});
alertDialog.show();
super.onReceivedError(webView, errorCode, description, failingUrl);
}
});
}
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) {
view.loadUrl(url);
return true;
}
}
#Override
// This method is used to detect back button
public void onBackPressed() {
if(webView.canGoBack()) {
webView.goBack();
} else {
// Let the system handle the back button
super.onBackPressed();
}
}
}

In your WebViewClient, you can load only specific url that you want as below,
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
if(url.equals("my url")) {
view.loadUrl(url);
}
return true;
}

Firstly you use web view you create web activity like this:
xml layout:-
<?xml version="1.0" encoding="utf-8"?>
<WebView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/webView1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
WebView Activity:-
public class WebViewActivity extends AppCompatActivity {
#BindView(R.id.webView1)
WebView webView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_web_view);
// i am using intent getting the value from like this
Intent intent2 = getIntent();
Bundle bundle = intent2.getExtras();
String link = bundle.getString("Agreement_URL");
Log.e("link---",""+link);
String file_type=bundle.getString("file_type");
if(file_type.equals("PDF"))
{
webView = (WebView) findViewById(R.id.webView1);
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("https://docs.google.com/gview?embedded=true&url="+link);
setContentView(webView);
}
else
{
webView = (WebView) findViewById(R.id.webView1);
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl(link);
}
}
/** Method on BackPressed Button click*/
public void onBackPressed(){
super.onBackPressed();
/** Activity finish*/
finish();
}
pass the value like this from previous activity
Intent intent =new Intent(context, WebViewActivity.class);
intent.putExtra("Agreement_URL","http://54.183.245.32/uploads/"+ finalUploadDoc);
intent.putExtra("file_type","PDF");
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
Log.e("ggg",""+ finalUploadDoc);
context.startActivity(intent);
try this it helps you

Opening an static html page in WebChromeClient in Android gets added with some more characters in url

I am getting error as The Web Page at file:///#/android_asset/webpage.htm could not be loaded as: Is a directory. in the emulator.
but my code is webView.loadUrl("file:///android_asset/webpage.htm");
First the page renders perfectly but again after rendering refreshes the page and does not get loaded and will get the web page not available.
If we could carefully see the url that has been given out by the android emulator there are two extra characters before android_asset.
Below is the code.
public class Catalog extends Activity {
final Activity activity = this;
WebView webView;
ProgressDialog progressDialog;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.getWindow().requestFeature(Window.FEATURE_PROGRESS);//used for rendering percentage of loading
setContentView(R.layout.catalog_layout);
try{
webView = (WebView) findViewById(R.id.browserwebview);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebChromeClient(new WebChromeClient() {
public void onProgressChanged(WebView view, int progress)
{
activity.setTitle("Loading...");
activity.setProgressBarVisibility(true);
activity.setProgress(progress * 100);
if(progress == 100){
activity.setTitle(R.string.app_name);
}
}
});
webView.setWebViewClient(new WebViewClient() {
#Override
public void onReceivedError(WebView view, int errorCode, String description, String failingUrl)
{
Toast.makeText(activity, "Oh no!"+ description, Toast.LENGTH_SHORT).show();
}
#Override
public void onLoadResource (WebView view, String url) {
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url)
{
return true;
}
});
webView.loadUrl("file:/android_asset/web/webpage.html");
}
catch (Exception e) {
e.printStackTrace();
}
ImageButton btnBack = (ImageButton)this.findViewById(R.id.buttonBackCatalog);
btnBack.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if(webView.canGoBack()){
webView.goBack();
}else{
Intent myIntent = new Intent(view.getContext(), FCFActivity.class);`
`startActivityForResult(myIntent, 0);
}
}
});
/*
* Actions for footer Buttons
*
*/
ImageButton buttonFooterMainHome = (ImageButton)findViewById(R.id.footerMainBtnHome);
buttonFooterMainHome.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent myIntent = new Intent(view.getContext(), FCFActivity.class);
startActivityForResult(myIntent, 0);
}
});
LinearLayout homeLinearLayout=(LinearLayout)this.findViewById(R.id.footerLayoutHome);
homeLinearLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent myIntent = new Intent(view.getContext(), FCFActivity.class);
startActivityForResult(myIntent, 0);
}
});
}
#Override
public void onConfigurationChanged(final Configuration newConfig)
{
// Ignore orientation change to keep activity from restarting
super.onConfigurationChanged(newConfig);
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
} else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
}
}
}
Looking forward to your reply.
thanks.

Oh this caused me headaches, and they changed how it worked for one of the android versions, but can't remember which. Here is what I do:
webView.loadUrl("file:/android_asset/webpage.html");
and if your static webpage has images you use this link:
file:///android_asset/yourimage.png
Edit try this: https://stackoverflow.com/a/8737547/969325, clean project and check if asset file is at path.

- `You are using only htm use html`
webview.getSettings().setJavaScriptEnabled(true);
webview.setWebViewClient(new myWebClient());
webview.loadurl();
and
public class myWebClient extends WebViewClient
{
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// TODO Auto-generated method stub
super.onPageStarted(view, url, favicon);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// TODO Auto-generated method stub
view.loadUrl(url);
return true;
}
}

Progress bar only work on loading page?

I've in the following code the progressbar working on the first page load. after when I click on other links, the progrss bar is not shown ?
If somebody can tell me how to change this code to have the progress bar working on all loading ?
Thanks,
André.
public class Android_Activity extends Activity {
WebView webview;
#Override
protected void onSaveInstanceState(Bundle outState) {
WebView webview = (WebView) findViewById(R.id.webview);
webview.saveState(outState);
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// set the main content view
setContentView(R.layout.main);
// check if an instance is stored and so restore it
if (savedInstanceState != null){
((WebView)findViewById(R.id.webview)).restoreState(savedInstanceState);
}
final ProgressDialog progressBar = ProgressDialog.show(this, getString(R.string.progress_title),
getString(R.string.progress_msg));
webview = (WebView)findViewById(R.id.webview);
webview.setHttpAuthUsernamePassword(getString(R.string.kdg_host),
getString(R.string.kdg_realm),
getString(R.string.kdg_user_name),
getString(R.string.kdg_password)
);
//webview.setWebViewClient(new myWebViewClient());
webview.setScrollBarStyle(WebView.SCROLLBARS_OUTSIDE_OVERLAY);
webview.getSettings().setRenderPriority(RenderPriority.HIGH);
webview.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
webview.getSettings().setAllowFileAccess(true);
webview.getSettings().setJavaScriptEnabled(true);
webview.setWebViewClient(new WebViewClient() {
public void onPageStarted(WebView view, String url) {
if (!progressBar.isShowing()) {
progressBar.show();
}
}
public void onPageFinished(WebView view, String url) {
//super.onPageFinished(view, url);
if (progressBar.isShowing()) {
progressBar.dismiss();
}
}
});
webview.loadUrl(getString(R.string.base_url));
}
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && webview.canGoBack()) {
webview.goBack();
return true;
}
return super.onKeyDown(keyCode, event);
}
private class myWebViewClient extends WebViewClient {
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
boolean error = false;
// check if it's an MAILTO URL
if(url.substring(0, 6).equalsIgnoreCase("mailto")){
Intent emailIntent = new Intent(android.content.Intent.ACTION_SEND);
emailIntent .setType("plain/text");
emailIntent .putExtra(android.content.Intent.EXTRA_EMAIL, new String[]{url.substring(7)});
startActivity(Intent.createChooser(emailIntent, "Send mail..."));
return true;
}
// check if it's an EXT:// (Call Web Browser)
else if(url.substring(0, 6).equalsIgnoreCase("ext://")){
Uri uriUrl = Uri.parse(url.substring(6));
Intent launchBrowser = new Intent(Intent.ACTION_VIEW, uriUrl);
startActivity(launchBrowser);
return true;
}
// check if it's an RTSP URL
else if(url.substring(0, 4).equalsIgnoreCase("rtsp")){
Uri uri = Uri.parse(url);
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
return true;
}
// else if it's an MP4 file link
else if(url.endsWith(".mp4")){
Uri uri = Uri.parse(url);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(uri, "video/mp4");
startActivity(intent);
return true;
}
// else if it's a 3GP file link
else if(url.endsWith(".3gp")){
Uri uri = Uri.parse(url);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(uri, "video/3gp");
startActivity(intent);
return true;
}
// else if it's a MP3 file link
else if(url.endsWith(".mp3")){
Uri uri = Uri.parse(url);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(uri, "audio/mp3");
startActivity(intent);
return true;
}
// else if it's a page URL
else{
URL Url;
try {
Url = new URL(url);
HttpURLConnection httpURLConnection = (HttpURLConnection) Url
.openConnection();
int response = httpURLConnection.getResponseCode();
if ((response >= 200)&&(response < 400))
//view.loadUrl(url);
error = false;
else
error = true;
} catch (Exception e) {
error = true;
}
}
// if an error occurred
if (error) {
showErrorDialog();
}
view.loadUrl(url);
return true;
}
}
#Override
public void onResume() {
super.onResume();
webview.reload();
}
public void onReceivedError(WebView view, int errorCode,
String description, String failingUrl) {
showErrorDialog();
}
public void showErrorDialog(){
AlertDialog alertDialog = new AlertDialog.Builder(this).create();
alertDialog.setTitle(getString(R.string.error_title));
alertDialog.setMessage(getString(R.string.error_msg));
alertDialog.setButton(getString(R.string.ok_btn),
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int which) {
}
});
alertDialog.show();
}
}

Use below working code ::
public class Android_Activity extends Activity {
private Android_Activity _activity;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
getWindow().requestFeature(Window.FEATURE_PROGRESS);
_activity = this;
setContentView(R.layout.main);
mwebview=(WebView)view.findViewById(R.id.webview);
mwebview.getSettings().setJavaScriptEnabled(true);
mwebview.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
if(checkInternetConnection(_activity)==true){
if(savedInstanceState==null)
mwebview.loadUrl(URL);
else
mwebview.restoreState(savedInstanceState);
}
else{
AlertDialog.Builder builder = new AlertDialog.Builder(_activity);
builder.setMessage("Please check your network connection.")
.setCancelable(false)
.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
}
});
AlertDialog alert = builder.create();
alert.show();
}
mwebview.setWebChromeClient(new WebChromeClient() {
#Override
public void onProgressChanged(WebView view, int progress) {
if(mwebview.getVisibility()==View.VISIBLE)
{
_activity.setProgress(progress * 100);
}
}
});
mwebview.setWebViewClient(new HelloWebViewClient());
}
//HelloWebViewClient class for webview
private class HelloWebViewClient extends WebViewClient {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
// TODO Auto-generated method stub
super.onPageStarted(view, url, favicon);
}
#Override
public void onReceivedError(WebView view, int errorCode,
String description, String failingUrl) {
// TODO Auto-generated method stub
super.onReceivedError(view, errorCode, description, failingUrl);
}
#Override
public void onPageFinished(WebView view, String url) {
// TODO Auto-generated method stub
super.onPageFinished(view, url);
}
#Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
// Otherwise, the link is not for a page on my site, so launch another Activity that handles URLs
view.loadUrl(url);
return true;
}
} //HelloWebViewClient-class
#Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
// Check if the key event was the Back button and if there's history
if ((keyCode == KeyEvent.KEYCODE_BACK) && mwebview.canGoBack() ){
mwebview.goBack();
return true;
}
// If it wasn't the Back key or there's no web page history, bubble up to the default
// system behavior (probably exit the activity)
return super.onKeyDown(keyCode, event);
}
//To check whether network connection is available on device or not
public static boolean checkInternetConnection(Activity _activity) {
ConnectivityManager conMgr = (ConnectivityManager) _activity.getSystemService(Context.CONNECTIVITY_SERVICE);
if (conMgr.getActiveNetworkInfo() != null
&& conMgr.getActiveNetworkInfo().isAvailable()
&& conMgr.getActiveNetworkInfo().isConnected())
return true;
else
return false;
}//checkInternetConnection()
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.KDG_EPG_Iphone"
android:versionCode="1"
android:versionName="1.00.00" android:installLocation="auto">
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<supports-screens
android:resizeable="false"
android:smallScreens = "false"
android:normalScreens = "true"
android:largeScreens = "false"
android:anyDensity = "true"/>
<uses-sdk android:minSdkVersion="8"/>
<application android:label="#string/app_name" android:icon="#drawable/icon">
<activity android:screenOrientation="portrait"
android:theme="#android:style/Theme.Black.NoTitleBar"
android:configChanges="keyboardHidden|orientation"
android:label="#string/app_label" android:name="com.KDG_EPG_Iphone.KDG_EPG_Iphone_Activity" android:icon="#drawable/icon">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>