UIScrollView其實構建的就像一列很長的火車，每滑動一個屏幕，展示一節車廂。

//主屏幕高度 #define kScreenHeight [UIScreen mainScreen].bounds.size.height //主屏幕寬度 #define kScreenWidth [UIScreen mainScreen].bounds.size.width CGFloat kImgCount = 10;CGFloat scrollY = 20; //scrollView距離屏幕頂部的距離 CGFloat pageCtrlWidth = 200;@property (nonatomic, strong) UIScrollView *scrollView; @property (nonatomic, strong) UIPageControl *pageCtrl;//構建UIScrollView代碼 self.scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, scrollY, kScreenWidth, kScreenHeight - scrollY)]; self.scrollView.delegate = self; for (int i = 0; i<kImgCount; i++) {UIImageView *imgview = [[UIImageView alloc] initWithFrame:CGRectMake(kScreenWidth * i, scrollY, kScreenWidth, kScreenHeight - scrollY)];imgview.image = [UIImage imageNamed:[NSString stringWithFormat:@"news%04d",i]];[self.scrollView addSubview:imgview]; } self.scrollView.contentSize = CGSizeMake(kScreenWidth * kImgCount, kScreenHeight - scrollY);//設置這一列火車的總長度 self.scrollView.pagingEnabled = YES;//分頁顯示 [self.view addSubview:self.scrollView];//構建UIPageControl代碼 self.pageCtrl = [[UIPageControl alloc] initWithFrame:CGRectMake((kScreenWidth - pageCtrlWidth)/2, kScreenHeight - scrollY, pageCtrlWidth, scrollY)]; self.pageCtrl.numberOfPages = kImgCount; self.pageCtrl.pageIndicatorTintColor = [UIColor greenColor]; self.pageCtrl.currentPageIndicatorTintColor = [UIColor yellowColor]; [self.view insertSubview:self.pageCtrl aboveSubview:self.scrollView];

UIScrollView常用代理方法

//當視圖滑動時 - (void)scrollViewDidScroll:(UIScrollView *)scrollView{} // 當視圖將要拖動的時候 - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{} //當視圖停止拖拽的時候調用 - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{}

轉載于:https://www.cnblogs.com/ruanjianxian/p/6126872.html

總結

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