UIScrollView根本用法和代理方法

UIScrollView基本用法和代理方法
UIScrollView *scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(50, 0, 200, 400)];
        // 内容的高和宽(滚动区间的大小左右)
        scrollView.contentSize = CGSizeMake(400, 400);
        // scrollView.contentOffset = CGPointMake(20, 20);
        // 设置区间的大小（上，下，左，右);
        // UIEdgeInsets edgeInsert = {10,10,10,10};
        // scrollView.contentInset = edgeInsert;
        scrollView.backgroundColor = [UIColor blueColor];
        scrollView.pagingEnabled = YES;
        
        UILabel *laber1 = [[UILabel alloc]initWithFrame:CGRectMake(0, 0, 100, 400)];
        laber1.backgroundColor = [UIColor brownColor];
        [scrollView addSubview:laber1];
        [laber1 release];
        
        UILabel *laber2 = [[UILabel alloc]initWithFrame:CGRectMake(200, 0, 100, 400)];
        laber2.backgroundColor = [UIColor yellowColor];
        [scrollView addSubview:laber2];
        [laber2 release];
        // 放大的最大倍数
        scrollView.maximumZoomScale = 2.0;
        // 放大的最小倍数
        scrollView.minimumZoomScale = 0.5;
        // 手指放开后的速率
        scrollView.decelerationRate = 1;
        // 设置是否有滚动条
        scrollView.showsHorizontalScrollIndicator = YES;
        scrollView.delegate = self;
        // yes移动手指足够长的长度触发事件，
        scrollView.canCancelContentTouches = NO;
        
        [scrollView flashScrollIndicators];
        // 是否同时运动,lock
        scrollView.directionalLockEnabled = YES;
        // 用户出发后要延迟一定的时间
        scrollView.delaysContentTouches = YES;
        [self addSubview:scrollView];
        [scrollView release];

- (void)viewDidLoad

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