How do I load url in android app depending on network status

Question

Morning,

I am using the following code in my Android app to load externally hosted web app This works fine and looks better than I expected (no webview nav buttons)

public class MainActivity extends DroidGap {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    super.loadUrl("http://www.external-url.com/webapp");
  } 
}

However, if the server is down or device has no internet connection, I get the ugly looking Android "Web Page not available" page. I want to avoid this by only calling the super.loadUrl if the web page is available.

What is the most efficient way to do this?

http://stackoverflow.com/a/2001824/826657 this link checks and discusses network state ! — Rachit Mishra, Oct 09 '13 at 09:59

Anchit Mittal · Accepted Answer · 2013-10-09T10:21:49.733

It usually comes, How can you overcome this is just check the network connections and Load the URL only if the connections are available else just display the Dialog.

if(isOnline()) super.loadUrl("http://www.external-url.com/webapp",1000);

You can add the delay also in loading the URL.

to check the network connection:

public boolean isOnline() {
    ConnectivityManager cm =
        (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo netInfo = cm.getActiveNetworkInfo();
    if (netInfo != null && netInfo.isConnectedOrConnecting())    // netInfo.isConnected is used if you confirmly want the network connection.

   {
            return true;
        }
        return false;
    }

Also add the following permission to the Android Manifest

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

Thanks. I already had the user permission. I added your function isOnline to my activity, changed isConnectedOrConnecting to isConnected and then proceeded super.loadUrl(... with if(isOnline().. now I just need to do a check to see if the webpage is live (maybe ping) — Jez D, Oct 09 '13 at 10:46

score 0 · Answer 2 · answered Oct 09 '13 at 10:02

Try the following, first check if internet is available then load url or else show a warning or anything:

DetectConnection.java:

    import android.content.Context;
    import android.net.ConnectivityManager;

    public class DetectConnection {
        /*
         * Checking internet connection
         */
        public static boolean checkInternetConnection(Context context) {

            ConnectivityManager con_manager = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);

            if (con_manager.getActiveNetworkInfo() != null
                    && con_manager.getActiveNetworkInfo().isAvailable()
                    && con_manager.getActiveNetworkInfo().isConnected()) {
                return true;
            } else {
                return false;
            }
        }
    }

MainActivity.java:

 public class MainActivity extends DroidGap {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    if (DetectConnection.checkInternetConnection(ViewNotifications.this)) {
                super.loadUrl("http://www.external-url.com/webapp");
            }else{
//Show warning
}


      } 
    }

score 0 · Answer 3 · answered Oct 09 '13 at 10:21

I Hope this will work for you

           public class Util {
public static boolean isNetworkAvailable(Activity activity) {
    ConnectivityManager connectivity = (ConnectivityManager) activity
            .getSystemService(Context.CONNECTIVITY_SERVICE);
    if (connectivity == null) {
        return false;
    } else {
        NetworkInfo[] info = connectivity.getAllNetworkInfo();
        if (info != null) {
            for (int i = 0; i < info.length; i++) {
                if (info[i].getState() == NetworkInfo.State.CONNECTED) {
                    return true;
                }
            }
        }
    }
    return false;
}}

and use this in-

   if (Util.isNetworkAvailable(Home.this)) {
    // do your coding here
    }

How do I load url in android app depending on network status

3 Answers3