I have a webview project. When there is no internet connection, it shows "webpage not available". Instead, I want to go another class or show error.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.webplayer);
customViewContainer = (FrameLayout) findViewById(R.id.customViewContainer);
webView = (WebView) findViewById(R.id.webView);
AdView adView = (AdView) this.findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
mWebViewClient = new myWebViewClient();
webView.setWebViewClient(mWebViewClient);
mWebChromeClient = new myWebChromeClient();
webView.setWebChromeClient(mWebChromeClient);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setAppCacheEnabled(true);
webView.getSettings().setBuiltInZoomControls(true);
webView.getSettings().setSaveFormData(true);
Intent i = getIntent();
String url = i.getStringExtra("url"); // retrieve the value you passed
if (savedInstanceState != null) {
webView.restoreState(savedInstanceState);
} else {
webView.loadUrl(url); // use that value
}
}
public boolean inCustomView() {
return (mCustomView != null);
}
public void hideCustomView() {
mWebChromeClient.onHideCustomView();
}
protected void onPause() {
super.onPause(); //To change body of overridden methods use File | Settings | File Templates.
webView.onPause();
}
protected void onResume() {
super.onResume(); //To change body of overridden methods use File | Settings | File Templates.
webView.onResume();
}
@Override
protected void onStop() {
super.onStop(); //To change body of overridden methods use File | Settings | File Templates.
if (inCustomView()) {
hideCustomView();
}
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent.KEYCODE_BACK) {
if (inCustomView()) {
hideCustomView();
return true;
}
if ((mCustomView == null) && webView.canGoBack()) {
webView.goBack();
return true;
}
}
return super.onKeyDown(keyCode, event);
}
class myWebChromeClient extends WebChromeClient {
private Bitmap mDefaultVideoPoster;
private View mVideoProgressView;
public void onShowCustomView(View view, int requestedOrientation, CustomViewCallback callback) {
onShowCustomView(view, callback); //To change body of overridden methods use File | Settings | File Templates.
}
public void onShowCustomView(View view,CustomViewCallback callback) {
// if a view already exists then immediately terminate the new one
if (mCustomView != null) {
callback.onCustomViewHidden();
return;
}
mCustomView = view;
webView.setVisibility(View.GONE);
customViewContainer.setVisibility(View.VISIBLE);
customViewContainer.addView(view);
customViewCallback = callback;
}
public View getVideoLoadingProgressView() {
if (mVideoProgressView == null) {
LayoutInflater inflater = LayoutInflater.from(webplayer.this);
mVideoProgressView = inflater.inflate(R.layout.video_progress, null);
}
return mVideoProgressView;
}
@Override
public void onHideCustomView() {
super.onHideCustomView(); //To change body of overridden methods use File | Settings | File Templates.
if (mCustomView == null)
return;
webView.setVisibility(View.VISIBLE);
customViewContainer.setVisibility(View.GONE);
// Hide the custom view.
mCustomView.setVisibility(View.GONE);
// Remove the custom view from its container.
customViewContainer.removeView(mCustomView);
customViewCallback.onCustomViewHidden();
mCustomView = null;
}
}
@Override
public void onHideCustomView() {
super.onHideCustomView(); //To change body of overridden methods use File | Settings | File Templates.
if (mCustomView == null)
return;
webView.setVisibility(View.VISIBLE);
customViewContainer.setVisibility(View.GONE);
// Hide the custom view.
mCustomView.setVisibility(View.GONE);
// Remove the custom view from its container.
customViewContainer.removeView(mCustomView);
customViewCallback.onCustomViewHidden();
mCustomView = null;
}
}
class myWebViewClient extends WebViewClient {
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
return super.shouldOverrideUrlLoading(view, url); //To change body of overridden methods use File | Settings | File Templates.
}
this is simply very easy
you can check internet conncection before requesting url
final ConnectivityManager connMgr = (ConnectivityManager) YourClass.this
.getSystemService(Context.CONNECTIVITY_SERVICE);
final android.net.NetworkInfo wifi = connMgr
.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
final android.net.NetworkInfo mobile = connMgr
.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
if (wifi.isConnected() || mobile.isConnected()) {
webView.loadUrl(url);
}else{
setContentView(R.layout.your);
}
//required permissions
add these permissions to your manifest file
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
for more help contect me at rajeshsaini890 at gmail