.h文件web
@property(nonatomic,strong)UIScrollView *scrollView0; @property (strong, nonatomic) UIPageControl *pageControl0; @property (nonatomic,strong) NSTimer *nstime;
.m文件(具体循环view内容已省略)svg
_scrollView0.contentSize = CGSizeMake([UIScreen mainScreen].bounds.size.width*5, 0); _scrollView0.showsVerticalScrollIndicator = NO;//隐藏滚动条 _scrollView0.pagingEnabled = YES;//开启分页功能 _scrollView0.delegate = self; _pageControl0 = [[UIPageControl alloc]init]; _pageControl0.backgroundColor = [UIColor whiteColor]; _pageControl0.numberOfPages = 5; _pageControl0.currentPage = 0;//默认起始页 //当前页背景样式图片 [_pageControl0 setValue:[UIImage imageNamed:@"菜单-滑动切换"] forKeyPath:@"_currentPageImage"]; //非当前页背景样式图片 [_pageControl0 setValue:[UIImage imageNamed:@"菜单-滑动切换灰"] forKeyPath:@"_pageImage"]; //设置定时器方法 self.nstime=[NSTimer scheduledTimerWithTimeInterval:2.0 target:self selector:@selector(scrolllab) userInfo:nil repeats:YES]; -(void)scrollImg { //NSLog(@"1"); //获取当前页码 NSInteger page=_pageControl0.currentPage; //判断最后一页,回到第一页不然页码加1 if (page==_pageControl0.numberOfPages-1) { page=0; }else { page++; } //页宽*(页码+1) CGFloat offsetX=page*_scrollView11.frame.size.width; //赋值 [_scrollView0 setContentOffset:CGPointMake(offsetX, 0) animated:YES]; } -(void)scrollViewDidScroll:(UIScrollView *)scrollView { //获取x方向偏移值 CGFloat offsetX = scrollView.contentOffset.x; //让图片翻页过半时页码显示下一个 offsetX=offsetX+(scrollView.frame.size.width*0.5); //偏移值除以图片或每页宽度获得第几页 int page= offsetX / scrollView.frame.size.width; _pageControl0.currentPage=page; } //拖拽时 -(void)scrollViewWillBeginDragging:(UIScrollView *)scrollView { //中止计时器,不可重用 [self.nstime invalidate]; self.nstime=nil; } //中止拖拽时 -(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate { //重启一个计时器 self.nstime=[NSTimer scheduledTimerWithTimeInterval:2.0 target:self selector:@selector(scrollImg) userInfo:nil repeats:YES]; }