[Android] Verifica se existe conexão disponível, retornando TRUE caso haja. Obs: Funciona em smartphone e tablet.

gistfile1.txt

public static boolean isNetworkConnected(Context context){
    ConnectivityManager cm = (ConnectivityManager)context.getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo network = cm.getActiveNetworkInfo();

    if(network != null){
        return network.isAvailable();
    }

    return false;
}