1 // ViewController.m
2 // 03查看大图
3 //
4 // Created by Administrator on 15/10/10.
5 // Copyright 2015年 ccsu. All rights reserved.
6 //
7
8 #import "ViewController.h"
9
10 @interface ViewController ()
11 @property (weak, nonatomic) IBOutlet UIScrollView *scrollView;
12 @property(nonatomic,strong)UIImageView *imageView;
13 @property(nonatomic,strong)UIImage *image;
14
15 @end
16
17 @implementation ViewController
18
19 -(void)setImage:(UIImage *)image{
20 _image = image;
21 //设置图像内容
22 self.imageView.image = image;//把图像传给UIImageView
23 //让图像视图根据图像自动调整大小
24 [self.imageView sizeToFit];
25 //告诉ScrollView内部内容大小
26 self.scrollView.contentSize = image.size;
27
28
29
30 }
31 -(UIImageView *)imageView{
32 if (_imageView == nil) {
33 _imageView = [[UIImageView alloc]init];
34 [self.scrollView addSubview:_imageView];
35 }
36 return _imageView;
37
38 }
39 - (void)viewDidLoad {
40 [super viewDidLoad];
41
42 self.image = [UIImage imageNamed:@"minion"];
43 //设置边距
44 self.scrollView.contentInset = UIEdgeInsetsMake(20, 20, 20, 20);
45 //不显示水平滚动标识(滚动条)
46 self.scrollView.showsHorizontalScrollIndicator = NO;
47 //不显示垂直滚动标识
48 self.scrollView.showsVerticalScrollIndicator = NO;
49 //偏移位置
50 self.scrollView.contentOffset = CGPointMake(100, 100);
51 //弹簧效果,取消就是NO
52 self.scrollView.bounces = YES;
53 UIButton *btn = [UIButton buttonWithType:UIButtonTypeContactAdd];
54 btn.center = self.view.center;
55 [self.view addSubview:btn];
56
57 [btn addTarget:self action:@selector(click) forControlEvents:UIControlEventTouchUpInside];
58
59 }
60
61 -(void)click
62 {
63
64 //移动大图的偏移位置.结构体只能不能直接赋值；
65 CGPoint offset = self.scrollView.contentOffset;
66 offset.x += 20;
67 offset.y += 20;
68 //注意：设置contentoffset 会忽略contentSize（即scrollview得总大小）
69 self.scrollView.contentOffset = offset;
70
71
72 }
73
74 @end
