// Добавить кнопку вот так
UIImage *redButtonImage = [UIImage imageNamed:@"ExitButton.png"];
UIButton *redButton = [UIButton buttonWithType:UIButtonTypeCustom];
redButton.frame = CGRectMake(280.0, 10.0, 29.0, 29.0);
[redButton setBackgroundImage:redButtonImage forState:UIControlStateNormal];
[view addSubview:redButton];