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  • 关于UIScrollerView的基本用法和代理

    - (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];

       }

    #pragma mark -- delegate 

       // 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"); }

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  • 原文地址:https://www.cnblogs.com/destiLaugh/p/5916161.html
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