#import "RootViewController.h"
//定义保存屏幕宽度和高度的宏#define kWidth self.view.frame.size.width#define kHeidth self.view.frame.size.height@interface RootViewController ()@end@implementation RootViewController#pragma mark ------- 代理检测滚动过程中触发的方法----//滚动过程中触发的方法- (void)scrollViewDidScroll:(UIScrollView *)scrollView { NSLog(@"正在滚动"); }//即将开始拖拽,此时滚动视图即将加速- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView { NSLog(@"即将开始拖拽");}//结束拖拽,不再加速-(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate { NSLog(@"拖拽结束");}//即将开始减速-(void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView { NSLog(@"即将开始减速");}//结束减速，也就是停止滚动-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView { NSLog(@"结束滚动"); // 先从负责滚动的⼤scrollView找到他的⼦视图 for (UIScrollView *sView in scrollView.subviews){ // 在根据⼦类的对象类型进⾏判断 if ([sView isKindOfClass:[UIScrollView class]]){ // 把视图的尺⼨恢复到原有尺⼨ sView.zoomScale = 1.0; } }}//指定缩放视图- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView { return [scrollView.subviews firstObject];}//中心缩放-(void)scrollViewDidZoom:(UIScrollView *)scrollView { UIImageView *imageView = [scrollView.subviews firstObject]; if (scrollView.zoomScale <= 1.0) { imageView.center = self.view.center ; }}-(void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale { NSLog(@"%@",NSStringFromCGSize(scrollView.contentSize));//只是打印 }- (void)viewDidLoad { [super viewDidLoad]; //创建滚动视图 int a = 7; CGFloat totalWidth = self.view.frame.size.width; CGFloat totalHeight = self.view.frame.size.height; UIScrollView *scroll = [[[UIScrollView alloc] initWithFrame:[[UIScreen mainScreen] bounds]]autorelease]; scroll.backgroundColor = [UIColor grayColor]; //设置代理 scroll.delegate = self; /** 如果想实现滚动视图的缩放功能，必须指定缩放的视图以及缩放的比例 指定缩放视图需要实现代理方法，指定缩放比例，shhiwei滚动设置缩放比例 */ // scroll.minimumZoomScale = 0.5;//最小缩放比例// scroll.maximumZoomScale = 2.0;//最大缩放比例 [self.view addSubview:scroll]; //设置滚动视图的相关属性 //1、滚动区域，内容区域的大小 //如果想要实现滚动操作，有三种情况 /* 1、内容视图的宽（滚动区域的宽大于滚动视图的宽） 2、内容视图（滚动区域）的高大于滚动视图的高 3、内容视图（滚动区域）的宽和高大于滚动视图的宽和高 */ scroll.contentSize = CGSizeMake(totalWidth * a,0); scroll.contentOffset =CGPointMake(0, 0); //偏移量 //设置整页滚动 scroll.pagingEnabled = YES; //关闭横向显示条// scroll.showsHorizontalScrollIndicator = NO; //关闭滚动视图的回弹效果 scroll.bounces = NO; //for循环创建七个UIImageView并且添加到滚动视图上去 for (int i = 0; i < a; i++) { UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, totalWidth, totalHeight)]; imageView.image = [UIImage imageNamed:[NSString stringWithFormat:@"%d.jpg", i + 1]]; //先创建小 UIScrollView *scroll1 = [[UIScrollView alloc] initWithFrame:CGRectMake(totalWidth * i,0 , totalWidth, totalHeight)]; scroll1.delegate = self; scroll1.minimumZoomScale = 0.5; scroll1.maximumZoomScale = 2.0; [scroll1 addSubview:imageView]; [scroll addSubview:scroll1]; [imageView release]; [scroll1 release]; } // Do any additional setup after loading the view.}