//设置内容页的大小
      //scrollView 添加图片 如果想让视图滑动,内容页的大小必须比ScrollView得大小要大
    scrollView.contentSize = CGSizeMake(320*8, 568*8);
    
    //设置区域相对于frame上下左右 在哪显示.
 //   scrollView.contentInset = UIEdgeInsetsMake(100, 100, 0, 0);
 
    //设置内容区的偏移量 ,修改ScrollView 修改左上角的点距离自身坐标原点的位置,修改bound 的origin .
//     scrollView.contentOffset = CGPointMake(300, 0);
    
//    [scrollView setContentOffset:CGPointMake(300, 0) animated:YES] ;
    
    //设置scrollview能否滑动..yes 可以, no 不可以
//     scrollView.scrollEnabled =YES;
    scrollView.tag = 200;
    //隐藏水平滑动指示器
    scrollView.showsHorizontalScrollIndicator = NO;
    
    //隐藏垂直滑动指示器
    scrollView.showsVerticalScrollIndicator = NO;
    
    //关闭滑动时的回弹效果
    scrollView.bounces = NO;
    
    //设置当点击状态条时能否滑动到最顶端
     scrollView.scrollsToTop =YES;
    
    //设置ScrollView是否可以整屏滑动 (一次滑动整个ScrollView的大小)
    scrollView.pagingEnabled = YES;
    
    //scrollview 的代理
    scrollView.delegate = self;
 // [scrollView setDelegate:self];
    
    //设置最大缩放比例
    
    scrollView.maximumZoomScale = 100;
    //设置最小缩放比例
    
    scrollView.minimumZoomScale = 0.001;

 //还原ScrollView
    
    [scroll setZoomScale:1.0 animated:YES];

//滑动时就会触发, (会触发多次)
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
{
    NSLog(@"%s",__FUNCTION__);
}

///只要缩放就触发
- (void)scrollViewDidZoom:(UIScrollView *)scrollView NS_AVAILABLE_IOS(3_2)

{
    NSLog(@"%s",__FUNCTION__);
    
}


//当将要拖拽时触发, 将要滑动时触发
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
{
    NSLog(@"%s",__FUNCTION__);


}


//当结束拖拽时触发,手指将要离开屏幕时触发
- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset NS_AVAILABLE_IOS(5_0)
{
    NSLog(@"%s",__FUNCTION__);

}



//当结束拖拽时触发, 手指离开屏幕
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
{

    NSLog(@"%s",__FUNCTION__);
}


//当ScrollView将要减速时触发 将要停止滑动时触发
- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView
{

    NSLog(@"%s",__FUNCTION__);

}


//当ScrollView 结束减速时触发 , 停止滑动
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{

 
    NSLog(@"%s",__FUNCTION__);
}


//当设置ScrollView 有一个动画效果时,该方法触发.
- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView
{
    NSLog(@"%s",__FUNCTION__);

}


//用来设置要缩放的ScrollView上面的哪一个子视图,只能是子视图,不能是ScrollView本身
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView
{
    
    
    
    return [scrollView viewWithTag:100];
}


//将要开始缩放时触发
- (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view NS_AVAILABLE_IOS(3_2)
{    NSLog(@"%s",__FUNCTION__);
}

//结束缩放时触发
- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale

{    NSLog(@"%s",__FUNCTION__);}



//Scrollstotop 属性设置为yes时, 该方法才会触发,进一步询问点击进度条是否有效果.
- (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView
{    NSLog(@"%s",__FUNCTION__);
    return YES;
}


//当点击状态条并且ScrollView滑动到顶端时触发.
- (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView
{    NSLog(@"%s",__FUNCTION__);
}

scrollView