[img]http://img.blog.csdn.net/20150104160357546?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQveXR1emhhbmd6aXlhbw==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
1.初始化
UIScrollView *scrollView = [[UIScrollViewalloc] init];
2.设置尺寸
（1）按照屏幕尺寸
scrollView.frame =self.view.bounds;
（2）自定义尺寸
scrollView.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height);
3.设置配风景
scrollView.backgroundColor = [UIColorredColor];
4.添加到View上
[self.viewaddSubview:scrollView];
5.在UIScrollView上添加image

//1.先初始化，再设置图片和尺寸
      UIImageView *imageView = [[UIImageView alloc] init];
      UIImage *image = [UIImage imageNamed:@"a11.jpg"];
      imageView.image = image;
      imageView.frame = CGRectMake(0, 0, image.size.width, image.size.height);
      [scrollView addSubview:imageView];
//2.先获得图片，经由过程图片去创建UIImageView
   UIImage *image = [UIImageimageNamed:@"a9.jpg"];
   _imageView = [[UIImageViewalloc] initWithImage:image];
    [scrollViewaddSubview:_imageView];
其他属性设置：
//设置滚动区域  如不雅宽设为0 ，就不克不及程度滚动
    scrollView.contentSize =CGSizeMake(image.size.width, image.size.height);
    
    //设置当前滚动的地位（左上角的坐标）
    scrollView.contentOffset =CGPointMake(500,500);
    //在四周添加滚动范围
    scrollView.contentInset =UIEdgeInsetsMake(0,0, 0, 0);
    //设置是否显示显示滚动条(程度，垂直)
//    scrollView.showsHorizontalScrollIndicator = NO;
    scrollView.showsVerticalScrollIndicator =NO;
    //设置滚动条样式(三种)
    scrollView.indicatorStyle =UIScrollViewIndicatorStyleBlack;
//    scrollView.indicatorStyle = UIScrollViewIndicatorStyleDefault;
//    scrollView.indicatorStyle = UIScrollViewIndicatorStyleWhite;
    
    //设置是否可以滚动
    scrollView.scrollEnabled =YES;
    //设置弹性效不雅
//    scrollView.bounces = NO;
    //即使图片小于滚动范围，也可以用弹性效不雅
    scrollView.alwaysBounceVertical =YES;
    scrollView.alwaysBounceHorizontal =YES;
    
@interface ViewController ()  <UIScrollViewDelegate>
{
    UIImageView *_imageView;
}
@end
//设置代劳为self
    scrollView.delegate =self;
    scrollView.maximumZoomScale =2;
#pragma mark 先肯定要缩放的控件是谁
-(UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{
    
    return _imageView;
}
    scrollView.minimumZoomScale =0.5;