ConnectionUtils.java

package ru.mobileup.grushasdk.utils;

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.Network;
import android.net.NetworkInfo;
import android.net.wifi.WifiManager;

/**
 * @author Vasili Chyrvon (vasili.chyrvon@gmail.com)
 */
public class ConnectionUtils {

    private ConnectionUtils() {
        //no instance
    }

    public static boolean hasConnection(Context context) {
        ConnectivityManager connectivityManager
                = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
        return networkInfo != null && networkInfo.isConnected();
    }

    public static boolean is3gAvailable(Context context) {
        ConnectivityManager connectivityManager
                = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);

        NetworkInfo networkInfo = null;

        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
            Network[] networks = connectivityManager.getAllNetworks();
            for (Network network : networks) {
                NetworkInfo ni = connectivityManager.getNetworkInfo(network);
                if (ni.getType() == ConnectivityManager.TYPE_MOBILE) {
                    networkInfo = ni;
                    break;
                }
            }
        } else {
            //noinspection deprecation
            networkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
        }

        boolean is3gAvailable = networkInfo != null && networkInfo.isAvailable();
        Loggi.d(String.format("3G is %s.", is3gAvailable ? "available" : "NOT available"));
        return is3gAvailable;
    }

    /**
     * Changes WiFi state
     * @param newState new state. true - enable, false - disable
     * @return true - state changed, false - state not changed, because WiFi already in needed state
     */
    public static boolean changeWiFiEnabled(Context context, boolean newState) {
        WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
        boolean currentState = wifiManager.isWifiEnabled();

        if (currentState != newState) {
            wifiManager.setWifiEnabled(newState);
            Loggi.d(String.format("WiFi turned %s.", newState ? "ON" : "OFF"));
            return true;
        } else {
            return false;
        }
    }
}