private String User;
private String Pass;

public void Load(){

    SharedPreferences Preferencias = getSharedPreferences("DatosUser", Context.MODE_PRIVATE);
    User =(Preferencias.getString("User",""));
    Pass = (Preferencias.getString("Pass", ""));

}

public String GetUser()
{
    Load();
    return User;
}
public String GetPass()
{
    return Pass;
}