iOS 使用ZBarSDK扫描条形码和二维码

ZBarSDK，一个比较优秀的开源项目，使用起来也很简单。

ZBarSDK是一个开源的SDK，可从这里下载到源码，该SDK实现了识别和读取各种条形码，包括EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Interleaved 2 of 5 和 QR Code。

帮助文档：http://zbar.sourceforge.net/iphone/sdkdoc/index.html

Step1.使用ZBarSDK 需要导入的framework

1.AVFoundation.framework

2.CoreMedia.framework

3.CoreVideo.framework

4.QuartzCore.framework

5.libiconv.dylib

Step2.在ViewController.h 导入#import "ZBarSDK.h"

Step3.在ViewController.h 继承 <ZBarReaderDelegate>协议

Step4.写代码：

ViewController.h

1 #import <uikit uikit.h="">
2 #import "ZBarSDK.h"
3
4 @interface ViewController : UIViewController <zbarreaderdelegate> @property (weak, nonatomic) IBOutlet UIImageView *imageView;
5 - (IBAction)scan:(id)sender;
6 @property (weak, nonatomic) IBOutlet UILabel *label;
7
8
9 @end</zbarreaderdelegate></uikit>

ViewController.m

01 #import "ViewController.h"
02 #import "ZBarSDK.h"
03
04 @interface ViewController ()
05
06 @end
07
08 @implementation ViewController
09
10 - (void)viewDidLoad
11 {
12     [super viewDidLoad];
13     // Do any additional setup after loading the view, typically from a nib.
14 }
15
16 - (void)didReceiveMemoryWarning
17 {
18     [super didReceiveMemoryWarning];
19     // Dispose of any resources that can be recreated.
20 }
21
22
23 - (IBAction)scan:(id)sender {
24
25
26     ZBarReaderViewController * reader = [ZBarReaderViewController new];
27     reader.readerDelegate = self;
28     ZBarImageScanner * scanner = reader.scanner;
29     [scanner setSymbology:ZBAR_I25 config:ZBAR_CFG_ENABLE to:0];
30
31     reader.showsZBarControls = YES;
32
33     [self presentViewController:reader animated:YES completion:nil];
34
35
36 }
37
38
39 -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
40 {
41     id<nsfastenumeration> results = [info objectForKey:ZBarReaderControllerResults];
42     ZBarSymbol * symbol;
43     for(symbol in results)
44         break;
45
46     _imageView.image = [info objectForKey:UIImagePickerControllerOriginalImage];
47
48     [picker dismissViewControllerAnimated:YES completion:nil];
49
50     _label.text = symbol.data;
51 }
52
53
54 @end</nsfastenumeration>

  在界面上放置一个UIImageView/UILabel/UIButton, UIImageView 用于显示扫描到的图像，UILabel用于显示扫描到的信息，UIButton 用于响应事件。

布局如下: