UIScrollView基本用法和代理方法

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- (void)viewDidLoad {     [super viewDidLoad];           scrollView = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)];     scrollView.backgroundColor = [UIColor redColor];     // 是否支持滑动最顶端 //    scrollView.scrollsToTop = NO;     scrollView.delegate = self;     // 设置内容大小     scrollView.contentSize = CGSizeMake(320, 460*10);     // 是否反弹 //    scrollView.bounces = NO;     // 是否分页 //    scrollView.pagingEnabled = YES;     // 是否滚动 //    scrollView.scrollEnabled = NO; //    scrollView.showsHorizontalScrollIndicator = NO;     // 设置indicator风格 //    scrollView.indicatorStyle = UIScrollViewIndicatorStyleWhite;     // 设置内容的边缘和Indicators边缘 //    scrollView.contentInset = UIEdgeInsetsMake(0, 50, 50, 0); //    scrollView.scrollIndicatorInsets = UIEdgeInsetsMake(0, 50, 0, 0);     // 提示用户,Indicators flash     [scrollView flashScrollIndicators];     // 是否同时运动,lock     scrollView.directionalLockEnabled = YES;     [self.view addSubview:scrollView];           UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 200, 320, 40)];     label.backgroundColor = [UIColor yellowColor];     label.text = @"学习scrolleview";     [scrollView addSubview:label];     [label release]; }   #pragma mark - /* // 返回一个放大或者缩小的视图 - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {       } // 开始放大或者缩小 - (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView: (UIView *)view {       }   // 缩放结束时 - (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(float)scale {       }    // 视图已经放大或缩小 - (void)scrollViewDidZoom:(UIScrollView *)scrollView { NSLog(@"scrollViewDidScrollToTop"); }  */   // 是否支持滑动至顶部 - (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView {     return YES; }   // 滑动到顶部时调用该方法 - (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView {     NSLog(@"scrollViewDidScrollToTop"); }   // scrollView 已经滑动 - (void)scrollViewDidScroll:(UIScrollView *)scrollView {     NSLog(@"scrollViewDidScroll"); }   // scrollView 开始拖动 - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {     NSLog(@"scrollViewWillBeginDragging"); }   // scrollView 结束拖动 - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {     NSLog(@"scrollViewDidEndDragging"); }   // scrollView 开始减速（以下两个方法注意与以上两个方法加以区别） - (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView {     NSLog(@"scrollViewWillBeginDecelerating"); }   // scrollview 减速停止 - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {    NSLog(@"scrollViewDidEndDecelerating"); }