UIButton.titleLabel裁剪文本问题

Question

希望我能得到一些帮助来解决 UILabel 的一个相当模糊的问题。我不断遇到字符剪辑问题。下面链接中的图像中的字体是 baskerville-bolditalic。黄色是 UIButton 渲染的矩形。黄色是 UIButton 的 titleLabel.backgroundColor。

http://img5.imageshack.us/img5/2381/screenshot20100813at235.png

这是代码：

    UIButton * currentCharacter = [UIButton buttonWithType:UIButtonTypeCustom];
    currentCharacter.frame = cFrame;
    currentCharacter.backgroundColor = [UIColor blueColor];
        currentCharacter.titleLabel.backgroundColor = [UIColor yellowColor];
        currentCharacter.titleLabel.numberOfLines = 1;
        currentCharacter.titleLabel.adjustsFontSizeToFitWidth = YES;
        currentCharacter.titleLabel.minimumFontSize = 1;
        currentCharacter.titleLabel.font = currentFont;
        currentCharacter.titleLabel.clipsToBounds = NO;
        currentCharacter.clipsToBounds = NO;

        currentCharacter.titleLabel.textAlignment = UITextAlignmentCenter;
        currentCharacter.titleLabel.adjustsFontSizeToFitWidth = YES;

也许我只是误解了 adjustmentFontSizeToFitWidth。提前非常感谢！