UIPageControl修改圆点图片及间距

1、继承UIPageControl，重写setCurrentPage（可以更换图片，间距可以修改dot的frame）：

- (void) setCurrentPage:(NSInteger)page {

    [supersetCurrentPage:page];

    for (NSUInteger i =0; i < [self.subviewscount]; i++) {

        UIView* dot = [self.subviewsobjectAtIndex:i];

        [dot setFrame:CGRectMake(dot.frame.origin.x, dot.frame.origin.y,9,9)];

        if ([dot.subviewscount] ==0) {

            UIImageView * view = [[UIImageViewalloc]initWithFrame:dot.bounds];

            [dot addSubview:view];

        };

        

        UIImageView *imageView = dot.subviews[0];

        

        if (i == page) {

            imageView.image = [UIImageimageNamed:@"闪屏页进度点1"];

        } else {

            imageView.image = [UIImageimageNamed:@"闪屏页进度点2"];

        }

        dot.backgroundColor = [UIColorclearColor];

    }

}

2、对UIPageControl缩放（图片大小间距都会变）：

pageControl.transform=CGAffineTransformScale(CGAffineTransformIdentity, 9.0/7.0, 9.0/7.0);