@PRoperty(nonatomic) CGPoint contentOffset; // 记录UIScrollView滚动的位置@property(nonatomic) CGSize contentSize; // 内容尺寸（能滚动的范围）@property(nonatomic) UIEdgeInsets contentInset; // 额外增加的滚动区域（在上下左右4个边缘）@property(nonatomic,assign) id<UIScrollViewDelegate> delegate; // 代理对象@property(nonatomic) BOOL bounces; // 是否有弹簧效果@property(nonatomic) BOOL showsHorizontalScrollIndicator; // 是否显示水平滚动条@property(nonatomic) BOOL showsVerticalScrollIndicator; // 是否显示垂直滚动条

 1     CGFloat w = self.view.frame.size.width; 2     CGFloat h = self.view.frame.size.height; 3     for (int i = 0; i< kCount; i++) { 4         UIImageView *imageView = [[UIImageView alloc] init]; 5          6         // 1.设置frame 7         imageView.frame = CGRectMake(i * w, 0, w, h); 8          9         // 2.设置图片10         NSString *imgName = [NSString stringWithFormat:@"0%d.jpg", i + 1];11         imageView.image = [UIImage imageNamed:imgName];12         13         [_scrollView addSubview:imageView];

 // height == 0 代表 禁止垂直方向滚动    _scrollView.contentSize = CGSizeMake(kCount * w, 0);    _scrollView.showsHorizontalScrollIndicator = NO;    _scrollView.pagingEnabled = YES;    _scrollView.delegate = self;

 1     UIPageControl *pageControl = [[UIPageControl alloc] init]; 2     pageControl.center = CGPointMake(w * 0.5, h - 20); 3     pageControl.bounds = CGRectMake(0, 0, 150, 50); 4     pageControl.numberOfPages = kCount; // 一共显示多少个圆点（多少页） 5     // 设置非选中页的圆点颜色 6     pageControl.pageIndicatorTintColor = [UIColor redColor]; 7     // 设置选中页的圆点颜色 8     pageControl.currentPageIndicatorTintColor = [UIColor blueColor]; 9     10     // 禁止默认的点击功能11     pageControl.enabled = NO;12     13     [self.view addSubview:pageControl];14     _pageControl = pageControl;

#pragma mark - UIScrollView的代理方法#pragma mark 当scrollView正在滚动的时候调用- (void)scrollViewDidScroll:(UIScrollView *)scrollView{    int page = scrollView.contentOffset.x / scrollView.frame.size.width;//    NSLog(@"%d", page);        // 设置页码    _pageControl.currentPage = page;}