UIScrollView+UIPageControl 图片切换加分页标示

@interface ViewController : UIViewController<UIScrollViewDelegate>{
UIScrollView *myScrollView;
UIPageControl *myPageControl;
}
@property(nonatomic,strong) UIScrollView *myScrollView;
@property(nonatomic,strong) UIPageControl *myPageControl;

@implementation ViewController
@synthesize myScrollView;
@synthesize myPageControl;
- (void)viewDidLoad{
[super viewDidLoad];
//创建UIScrollView
myScrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(10, 30, 300, 188)];
myScrollView.pagingEnabled = YES;//分页滚动
//myScrollView.bounces = NO;//是否反弹
myScrollView.showsHorizontalScrollIndicator = NO;
myScrollView.delegate = self;
[self.view addSubview:myScrollView];
for (int i=1; i<=5; i++) {
UIImageView *imageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:[NSString stringWithFormat:@"%d",i]]];
imageView.frame = CGRectMake((i-1)*300, 0, 300, 188);
[myScrollView addSubview:imageView];
}
CGSize size = CGSizeMake(300*5, 188);
myScrollView.contentSize = size;
//创建UIPageControl
myPageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(110, 190, 100, 30)];
myPageControl.numberOfPages = 5; //总的图片页数
myPageControl.currentPage = 0;      //当前页
[myPageControl addTarget:self action:@selector(pageTurn:) forControlEvents:UIControlEventValueChanged]; //用户点击UIPageControl的响应函数
[self.view addSubview:myPageControl]; //将UIPageControl添加到主界面上。
}

-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
//更新UIPageControl的当前页
CGPoint offset = scrollView.contentOffset;
CGRect bounds = scrollView.frame;
[myPageControl setCurrentPage:offset.x / bounds.size.width];
}

- (void)pageTurn:(UIPageControl*)sender
{
//令UIScrollView做出相应的滑动显示
CGSize viewSize = myScrollView.frame.size;
CGRect rect = CGRectMake(sender.currentPage * viewSize.width, 0, viewSize.width, viewSize.height);
[myScrollView scrollRectToVisible:rect animated:YES];
}