ｄｏｗｎｌｏａｄ：Java工程师高薪训练营

 public static boolean isWifiEnabled(Context context) {
        ConnectivityManager mgrConn = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        TelephonyManager mgrTel = (TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);
        return ((mgrConn.getActiveNetworkInfo() != null && mgrConn
                .getActiveNetworkInfo().getState() == NetworkInfo.State.CONNECTED) || mgrTel
                .getNetworkType() == TelephonyManager.NETWORK_TYPE_UMTS);
    }

    /**
     * 判断是否是3G网络
     * @param context
     * @return
     */
    public static boolean is3rd(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkINfo = cm.getActiveNetworkInfo();
        if (networkINfo != null
                && networkINfo.getType() == ConnectivityManager.TYPE_MOBILE) {
            return true;
        }
        return false;
    }

    /**
     * 判断是wifi还是3g网络
     * @param context
     * @return
     */
    public static boolean isWifi(Context context) {
        ConnectivityManager cm = (ConnectivityManager) context
                .getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkInfo networkINfo = cm.getActiveNetworkInfo();
        if (networkINfo != null
                && networkINfo.getType() == ConnectivityManager.TYPE_WIFI) {
            return true;
        }
        return false;
    }
}