How to know device is connected to Wifi or 3G, programatically

Question

How i can know device is connected to Wifi or 3G, programmatically

Thanks

Answer 1

here is my working sample:

public boolean isNetworkTypeMobile() {
    final ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    return (cm!=null && cm.getActiveNetworkInfo()!=null && isNetworkTypeMobile(cm.getActiveNetworkInfo().getType()));
}

public static boolean isNetworkTypeMobile(int networkType) {
    switch (networkType) {
        case ConnectivityManager.TYPE_MOBILE: //0
        case ConnectivityManager.TYPE_MOBILE_MMS: //2
        case ConnectivityManager.TYPE_MOBILE_SUPL: //3
        case ConnectivityManager.TYPE_MOBILE_DUN: //4
        case ConnectivityManager.TYPE_MOBILE_HIPRI: //5
        case 10:
        case 11:
        case 12:
        case 14:
            return true;
        default:
            return false;
    }
}