1 // 2 //  ViewController.m 3 //  ImageZoom 4 // 5 //  Created by hellovoidworld on 14/11/28. 6 //  Copyright (c) 2014年 hellovoidworld. All rights reserved. 7 // 8  9 #import "ViewController.h"10 11 @interface ViewController ()12 13 // 图片控件14 @property (weak, nonatomic) IBOutlet UIImageView *imageView;15 16 // UIScrollView控件17 @property (weak, nonatomic) IBOutlet UIScrollView *scrollView;18 19 @end20 21 @implementation ViewController22 23 - (void)viewDidLoad {24     [super viewDidLoad];25     // Do any additional setup after loading the view, typically from a nib.26    27     self.scrollView.contentSize = CGSizeMake(900, 1305);28     self.scrollView.delegate = self;29    30     self.scrollView.maximumZoomScale = 2.0;31     self.scrollView.minimumZoomScale = 0.1;32    33 }34 35 - (void)didReceiveMemoryWarning {36     [super didReceiveMemoryWarning];37     // Dispose of any resources that can be recreated.38 }39 40 41 - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {42      NSLog(@"开始拖曳");43 }44 45 - (void)scrollViewDidScroll:(UIScrollView *)scrollView {46     NSLog(@"正在拖曳");47 }48 49 - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {50     NSLog(@"结束拖曳");51 }52 53 54 // 缩放手势调用的方法55 - (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {56     return self.imageView; // 需要放大的ImageView57 }58 59 - (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view {60     NSLog(@"开始缩放");61 }62 63 - (void)scrollViewDidZoom:(UIScrollView *)scrollView {64     NSLog(@"正在缩放");65 }66 67 - (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale {68     NSLog(@"结束缩放");69 }70 71 - (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView {72     NSLog(@"拖曳完成后减速开始");73 }74 75 - (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {76     NSLog(@"拖曳完成后减速完成");77 }78  79 @end80