设置UIButton字体

我有以下代码在UIButton中设置文本

[self.fullListButton_ setTitle:[NSString stringWithFormat:@"%d", [self.newsfeedItem_.newsfeedToSubjects count] - 3] forState:UIControlStateNormal]; 

问题是我似乎无法为此设置字体。 我该怎么做?

在较新版本的iOS中:

 UIButton * myButton; myButton.titleLabel.font = [UIFont systemFontOfSize: 12]; 

或者任何其他的字体机制。

在这里寻找的UIButton部分:

http://developer.apple.com/library/ios/#documentation/uikit/reference/UIButton_Class/UIButton/UIButton.html#//apple_ref/occ/instp/UIButton/titleLabel

在这里为UIFont的东西:

http://developer.apple.com/library/ios/#documentation/uikit/reference/UIFont_Class/Reference/Reference.html

在你的代码中:

 self.fullListButton_.titleLabel.font = [UIFont systemFontOfSize: 12]; 

要么

 self.fullListButton_.titleLabel.font = [UIFont fontWithName:@"Arial" size:12];