UIscrollView的用法和代理的使用

- (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");

}