其实所谓的dot就是加在pageControl上的UIImageView，有两种状态，一种是正常态，一种是高亮状态，而这些dot默认的userInteractionEnabled = NO;
所以解决办法也很简单了，把每个dot循环出来，将其userInteractionEnabled设为YES，并加上UIButton，将button的tag标注出来，并给button绑定一个事件，这样点击每个button也能取到其tag，取到tag就取到了对应的UIImageView，然后将button的tag赋给pageControl.currentPage,这样目的就达到了。
pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(50, 430, 220, 30)];
pageControl.center = CGPointMake(mainScreenWidth / 2, 430);
pageControl.backgroundColor = [UIColor clearColor];
pageControl.numberOfPages = 8;
int i = 0;
for (UIImageView *imgV in [pageControl subviews]) {
imgV.userInteractionEnabled = YES; //默认为NO
UIButton *botButton = [UIButton buttonWithType:UIButtonTypeCustom];
botButton.frame = imgV.bounds;
botButton.tag = i;
botButton.backgroundColor = [UIColor clearColor];
[botButton addTarget:self action:@selector(tapBotAction:) forControlEvents:UIControlEventTouchUpInside];
[imgV addSubview:botButton];
i++;
}
//[pageControl.layer setCornerRadius:8]; //设置圆角
[pageControl addTarget:self action:@selector(changePageNumber:) forControlEvents:UIControlEventValueChanged];
[self.view addSubview:pageControl];
}
- (void)tapBotAction:(id)sender{
int index = [(UIButton *)sender tag];
pageControl.currentPage = index;
[catalogScrollView setContentOffset:CGPointMake(index * catalogSlideRemoving, 0) animated:YES]; //if animated is ‘NO‘ animat don‘t implement
}
原文：http://www.cnblogs.com/yurunfei2011/p/5719843.html