展示图

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ViewController.h

@interface ViewController : UIViewController<UIScrollViewDelegate>{    UIPageControl *_pageCtrl;    UIScrollView *_scrollView;}

ViewController.m

#import "ViewController.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad{    [super viewDidLoad];//    NSMutableArray *imgArrary = [[NSMutableArray alloc] init];        //创建滚动视图    _scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 20, 320, 300)];    //隐藏滚动条    _scrollView.showsHorizontalScrollIndicator = NO;        //设置代理方法    _scrollView.delegate = self;        //分页效果    _scrollView.pagingEnabled = YES;    //设置内容尺寸    _scrollView.contentSize = CGSizeMake(320*5, 300);    [self.view addSubview:_scrollView];        for(int i=1; i<6; i++) {            NSString *name = [NSString stringWithFormat:@"image%d.jpg",i];        UIImage *image = [UIImage imageNamed:name];        UIImageView *imageView = [[UIImageView alloc] initWithImage:image];        imageView.frame = CGRectMake(320*(i-1), 0, 320, 300);        [_scrollView addSubview:imageView];    }        //创建分页控键    _pageCtrl = [[UIPageControl alloc] initWithFrame:CGRectMake(0, 300, 320, 20)];    _pageCtrl.numberOfPages = 5;    _pageCtrl.currentPage = 0;    [_pageCtrl addTarget:self action:@selector(pageAction) forControlEvents:UIControlEventValueChanged];    [self.view addSubview:_pageCtrl];    }#pragma mark - UIScrollView delegate//- (void)scrollViewDidScroll:(UIScrollView *)scrollView {////    /*//     0:  0--320 /320  0//     1;   320--640  /320  1//     *///    //    int count = scrollView.contentOffset.x/320;//    _pageCtrl.currentPage = count;//    //}//视图停止以后调用- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {    int count = scrollView.contentOffset.x/320;    _pageCtrl.currentPage = count;}- (void)pageAction {    int index = _pageCtrl.currentPage;        CGPoint point = CGPointMake(320*index, 0);        //    _scrollView.contentOffset = point;    [_scrollView setContentOffset:point animated:YES];    }@end

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