在项目中，我们狠容易遇到就是一些产品，他们什么也不懂，还就是喜欢瞎搞，比如说苹果原生的UISegmentrol ,产品要求我们怎么怎么做，没办法，谁让人家是产品呢，

于是我就只能看这个UISegmentrol的官方文档了，看一遍不知道怎么修改，从头到尾细致地看了两遍，终于知道怎么弄了，

要的是这样的一个效果，通过看官方的API，找到了答案，文档上是这么说的：

/*

You may specify the font, text color, and shadow properties for the title in the text attributes dictionary, using the keys found in NSAttributedString.h.

*/

- (void)setTitleTextAttributes:(nullable NSDictionary *)attributes forState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;

- (nullable NSDictionary *)titleTextAttributesForState:(UIControlState)state NS_AVAILABLE_IOS(5_0) UI_APPEARANCE_SELECTOR;

看到上边这几句话，我顿时眼前一亮，马上code就出来了，效果也就自然而然形成，code如下：

//修改系统的UISegmentControl

UIColor *textColor = PB_COLOR_18;//black

NSDictionary *textColorDic = [NSDictionary dictionaryWithObject:textColor forKey:NSForegroundColorAttributeName];

[segmentControl setTitleTextAttributes:textColorDic forState:UIControlStateNormal];

UIColor *selectTextColor = PB_COLOR_1;//blue

NSDictionary *selectTextColorDic = [NSDictionary dictionaryWithObject:selectTextColor forKey:NSForegroundColorAttributeName];

[segmentControl setTitleTextAttributes:selectTextColorDic forState:UIControlStateSelected];

OK。解决