创建一个类，继承UIPageControl，重写setCurrentPage方法，可设置圆点大小
- (void) setCurrentPage:(NSInteger)page {
[super setCurrentPage:page];
for (NSUInteger subviewIndex = 0; subviewIndex < [self.subviews count]; subviewIndex++) {
UIImageView* subview = [self.subviews objectAtIndex:subviewIndex];
CGSize size;
size.height = 10;
size.width = 10;
[subview setFrame:CGRectMake(subview.frame.origin.x, subview.frame.origin.y,
size.width,size.height)];
}
}
如果只改变当前选中的点的大小，前面加个判断就可以了：
- (void) setCurrentPage:(NSInteger)page {
[super setCurrentPage:page];
for (NSUInteger subviewIndex = 0; subviewIndex < [self.subviews count]; subviewIndex++) {
if (subviewIndex == page)
{
UIImageView* subview = [self.subviews objectAtIndex:subviewIndex];
CGSize size;
size.height = 10;
size.width = 10;
[subview setFrame:CGRectMake(subview.frame.origin.x, subview.frame.origin.y,
size.width,size.height)];
}
}
}
原文：http://www.cnblogs.com/cui-cui/p/6474522.html