//建立UIScrollView
前提是把UIScrollView设置成了属性,才能 self.scrollView
//创建scrollView
self.scrollView = [[[UIScrollView alloc] initWithFrame:[UIScreen mainScreen].bounds] autorelease];
// contentSize 决定了scrollView 滑动范围的大小
self.scrollView.contentSize = CGSizeMake(7 * KScreeenWidth, KScreeenHeight);
//是否显示水平方向滚动条
self.scrollView.showsVerticalScrollIndicator = YES;
//是否显示垂直方向的滚动条
// self.scrollView.showsHorizontalScrollIndicator = NO;
//是否需要回弹效果
self.scrollView.bounces = NO;
//设置整页翻动
self.scrollView.pagingEnabled = YES;
//设置scrollView的偏移量, 默认是(0, 0);
// self.scrollView.contentOffset = CGPointMake(KScreeenWidth * 4, 0);
//设置 scrollView 能否滚动
// self.scrollView.scrollEnabled = NO;
[self addSubview:self.scrollView];
//设置最大的缩放比例
self.rootView.scrollView.maximumZoomScale = 5;
//设置最小的缩放比例
self.rootView.scrollView.minimumZoomScale = 0.5;
//创建 UIPageControl
self.pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(100, KScreeenHeight - 100, 120, 30)];
//设置有多少个小点点的个数
_pageControl.numberOfPages = 7;
//改变整个小点点控件的颜色
_pageControl.pageIndicatorTintColor = [UIColor magentaColor];
//改变小点点的颜色
self.pageControl.currentPageIndicatorTintColor = [UIColor greenColor];
[self addSubview:_pageControl];
[_pageControl release];
//给 pageControl 添加事件
[self.rootView.pageControl addTarget:self action:@selector(pagrAction:) forControlEvents:UIControlEventValueChanged];