NetwrokUtil.java

package com.rabinkaspal.mobikart.helpers;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.util.Log;
import android.widget.Toast;

import com.rabinkaspal.mobikart.R;

public class NetworkUtil {

    public static int TYPE_WIFI = 1;
    public static int TYPE_MOBILE = 2;
    public static int TYPE_NOT_CONNECTED = 0;

    private static boolean isConnected = false;

    public static int getConnectivityStatus(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo activeNetwork = cm.getActiveNetworkInfo();
        if (null != activeNetwork) {
            if (activeNetwork.getType() == ConnectivityManager.TYPE_WIFI)
                return TYPE_WIFI;

            if (activeNetwork.getType() == ConnectivityManager.TYPE_MOBILE)
                return TYPE_MOBILE;
        }
        return TYPE_NOT_CONNECTED;
    }

    public static String getConnectivityStatusString(Context context) {
        int conn = NetworkUtil.getConnectivityStatus(context);
        String status = null;
        if (conn == NetworkUtil.TYPE_WIFI) {
            status = "Wifi enabled";
        } else if (conn == NetworkUtil.TYPE_MOBILE) {
            status = "Mobile data enabled";
        } else if (conn == NetworkUtil.TYPE_NOT_CONNECTED) {
            status = "Not connected to Internet";
        }
        return status;
    }

    public static void checkConnection(final Context context) {
        if(!isNetworkAvailable(context)){

            AlertDialog.Builder alert = new AlertDialog.Builder(context);
            alert.setTitle("Information");
            alert.setIcon(R.drawable.ic_launcher);
            alert.setMessage("Not connected to the internet.");


            alert.setPositiveButton("Retry", new OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    if(!isConnected){checkConnection(context);}
                    else{
                        Log.d("1", "asdf");
                        Toast.makeText(context, "is connected", Toast.LENGTH_SHORT).show();
                        dialog.cancel();}
                }
            });
            alert.show();
        }else{Toast.makeText(context, "is connected", Toast.LENGTH_SHORT).show();}

    }

    public static boolean isNetworkAvailable(Context context) {
        ConnectivityManager connectivity = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        if (connectivity != null) {
            NetworkInfo[] info = connectivity.getAllNetworkInfo();
            if (info != null) {
                for (int i = 0; i < info.length; i++) {
                    if (info[i].getState() == NetworkInfo.State.CONNECTED) {
                        if (!isConnected) {
                            isConnected = true;
                            // do your processing here ---
                            // if you need to post any data to the server or get
                            // status
                            // update from the server
                        }
                        return true;
                    }
                }
            }
        }
        isConnected = false;
        return false;
    }

}