01-UIScrollView01-大图片展示

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1. //
2. //  MJViewController.m
3. //  01-UIScrollView01-大图片展示
4. //
5. //  Created by apple on 13-11-27.
6. //  Copyright (c) 2013年 itcast. All rights reserved.
7. //
8. 
   
9. #import "MJViewController.h"
10. 
    
11. @interface MJViewController ()
12. 
    
13. @end
14. 
    
15. @implementation MJViewController
16. 
    
17. - (void)viewDidLoad
18. {
19.     [super viewDidLoad];
20.     
21.     UIScrollView *scrollView = [[UIScrollView alloc] init];
22.     scrollView.frame = CGRectMake(0, 0, 250, 250); // 指UIScrollView的可视范围
23.     scrollView.backgroundColor = [UIColor grayColor];
24.     [self.view addSubview:scrollView];
25.     
26.     UIImageView *imageView = [[UIImageView alloc] init];
27.     imageView.image = [UIImage imageNamed:@"big.jpg"];
28.     CGFloat imgW = imageView.image.size.width; // 图片的宽度
29.     CGFloat imgH = imageView.image.size.height; // 图片的高度
30.     imageView.frame = CGRectMake(0, 0, imgW, imgH);
31.     [scrollView addSubview:imageView];
32.     
33.     // 设置UIScrollView的滚动范围（内容大小）
34.     scrollView.contentSize = imageView.image.size; 
35.     // 隐藏水平滚动条
36.     scrollView.showsHorizontalScrollIndicator = NO;
37.     scrollView.showsVerticalScrollIndicator = NO;
38.     
39.     // 去掉弹簧效果
40. //    scrollView.bounces = NO;
41.     
42.     // top  left  bottom  right
43.     scrollView.contentInset = UIEdgeInsetsMake(10, 20, 40, 80);
44. }
45. 
    
46. @end

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