最近无意间发现大部分app轮播图的UIPageController 的风格都变了，变成扁平的，觉得挺好看；然后自己也想实现一个
IMG_1321.PNG
但是后来发现，自定义一个比较麻烦，就想着看看网上有没有好的三方实现了这个效果😶，然后找到了SDCycleScrollView.但是发现其中也是使用自定义的TAPageControl来实现切换图片的，
屏幕快照 2017-09-29 下午3.41.58.png
//MARK: 打印pageController的所有属性
- (void)getAllIvarList{
unsigned int methodCount = 0;
Ivar * ivars = class_copyIvarList([UIPageControl class], &methodCount);
for (unsigned int i = 0; i < methodCount; i ++) {
Ivar ivar = ivars[i];
const char * name = ivar_getName(ivar);
const char * type = ivar_getTypeEncoding(ivar);
NSLog(@"UIPageControl拥有的成员变量的类型为%s，名字为 %s ",type, name);
}
free(ivars);
}
屏幕快照 2017-09-29 下午3.44.22.png
那么一切都是那么理所当然了
屏幕快照 2017-09-29 下午3.47.36.png
_customCellScrollViewDemo = [SDCycleScrollView cycleScrollViewWithFrame:CGRectMake(0, 820, w, 120) delegate:self placeholderImage:[UIImage imageNamed:@"placeholder"]];
//SDCycleScrollView 自带属性实现自定义pageController
// _customCellScrollViewDemo.currentPageDotImage = [UIImage imageNamed:@"YES"];
// _customCellScrollViewDemo.pageDotImage = [UIImage imageNamed:@"NO"];
_customCellScrollViewDemo.imageURLStringsGroup = imagesURLStrings;
//获取pageController属性，修改图片
UIPageControl * pageControl = [_customCellScrollViewDemo valueForKey:@"pageControl"];
[pageControl setValue:[UIImage imageNamed:@"YES"] forKey:@"_currentPageImage"];
[pageControl setValue:[UIImage imageNamed:@"NO"] forKey:@"_pageImage"];
[demoContainerView addSubview:_customCellScrollViewDemo];
最后实现的效果，和SDCycleScrollView自定义的效果是一样的
IMG_1322.PNG
