segmentedControl设置字体和字体颜色问题

NSDictionary *dic = [NSDictionary dictionaryWithObjectsAndKeys:[UIColor blackColor],UITextAttributeTextColor,[UIFont fontWithName:@"AppleGothic"size:14],UITextAttributeFont ,nil];

    //设置各种状态的字体和颜色
    [self.segmentedControl setTitleTextAttributes:dic forState:UIControlStateNormal];