使用ZBar来读取条形码和二维码的方法

版权声明：本文为博主原创文章，未经博主允许不得转载。

1.使用ZBar项目。下载地址是： http://zbar.sourceforge.net/iphone/index.html

2.新建一个项目。

3.导入 ZBar的sdk。把ZBar SDK的目录拉入项目，然后选中copy选项

4.在项目文件的target中加入 以下framework

5.在appDelegate文件中加入 标记部分的代码

1. - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
2. {
3. self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
4. // Override point for customization after application launch.
5. self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
6. self.window.rootViewController = self.viewController;
7. [self.window makeKeyAndVisible];
8. // force view class to load so it may be referenced directly from NIB
9. [ZBarReaderView class];
10. return YES;
11. }

注意此代码：

1. // force view class to load so it may be referenced directly from NIB
2. [ZBarReaderView class];

6.在.h文件中加入   ZBarReaderViewDelegate的实现，代码如下:

1. //
2. //  ViewController.h
3. //  FootSafety
4. //
5. //  Created by 泽宇 徐 on 12-6-12.
6. //  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.
7. //
8. #import <UIKit/UIKit.h>
9. #import "ZBarSDK.h"
10. @interface ViewController : UIViewController<ZBarReaderViewDelegate>
11. {
12. IBOutlet UILabel  * label ;
13. ZBarReaderView *readerView;
14. ZBarCameraSimulator *cameraSim;
15. }
16. @property(nonatomic,retain) UILabel * label ;
17. @property (nonatomic, retain) IBOutlet ZBarReaderView *readerView;
18. @end

7.在.m文件中要实现的主要方法是：

1. - (void) readerView: (ZBarReaderView*) view
2. didReadSymbols: (ZBarSymbolSet*) syms
3. fromImage: (UIImage*) img
4. {
5. // do something useful with results
6. for(ZBarSymbol *sym in syms) {
7. self.label.text = sym.data;
8. break;
9. }
10. }

这里是功能是读取照片信息，把条码放如label显示

1. -(void) viewDidAppear:(BOOL)animated
2. {
3. // run the reader when the view is visible
4. [readerView start];
5. }

这个是在显示视图的时候，启动摄像头，开始扫描

1. - (void)viewDidLoad
2. {
3. [super viewDidLoad];
4. // Do any additional setup after loading the view, typically from a nib.
5. // the delegate receives decode results
6. readerView.readerDelegate = self;
7. // you can use this to support the simulator
8. if(TARGET_IPHONE_SIMULATOR) {
9. cameraSim = [[ZBarCameraSimulator alloc]
10. initWithViewController: self];
11. cameraSim.readerView = readerView;
12. }
13. }

在初始化的时候，设置托管。

.m文件所有内容是：

1. //
2. //  ViewController.m
3. //  FootSafety
4. //
5. //  Created by 泽宇 徐 on 12-6-12.
6. //  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.
7. //
8. #import "ViewController.h"
9. @interface ViewController ()
10. @end
11. @implementation ViewController
12. @synthesize label;
13. @synthesize readerView;
14. - (void)viewDidLoad
15. {
16. [super viewDidLoad];
17. // Do any additional setup after loading the view, typically from a nib.
18. // the delegate receives decode results
19. readerView.readerDelegate = self;
20. // you can use this to support the simulator
21. if(TARGET_IPHONE_SIMULATOR) {
22. cameraSim = [[ZBarCameraSimulator alloc]
23. initWithViewController: self];
24. cameraSim.readerView = readerView;
25. }
26. }
27. -(void) viewDidAppear:(BOOL)animated
28. {
29. // run the reader when the view is visible
30. [readerView start];
31. }
32. - (void) readerView: (ZBarReaderView*) view
33. didReadSymbols: (ZBarSymbolSet*) syms
34. fromImage: (UIImage*) img
35. {
36. // do something useful with results
37. for(ZBarSymbol *sym in syms) {
38. self.label.text = sym.data;
39. break;
40. }
41. }
42. - (void)viewDidUnload
43. {
44. [super viewDidUnload];
45. // Release any retained subviews of the main view.
46. }
47. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
48. {
49. return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
50. }
51. -(void) dealloc
52. {
53. [self.readerView release];
54. [self.label release];
55. [super dealloc];
56. }
57. @end

在ViewController.xib文件中 增加一个view，并且修改view的类是ZBarReaderView ，并且指向 .h文件中定义的

1. ZBarReaderView *readerView;

版权声明：本文为博主原创文章，未经博主允许不得转载。
 
.使用ZBar项目。下载地址是： http://zbar.sourceforge.net/iphone/index.html
 
.新建一个项目。
 
.导入 ZBar的sdk。把ZBar SDK的目录拉入项目，然后选中copy选项
 
.在项目文件的target中加入 以下framework
 
.在appDelegate文件中加入 标记部分的代码
[cpp] view plain copy
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];
    self.window.rootViewController = self.viewController;
    [self.window makeKeyAndVisible];  
 
    // force view class to load so it may be referenced directly from NIB
    [ZBarReaderView class];  
 
    return YES;
}
注意此代码：
 
[cpp] view plain copy
// force view class to load so it may be referenced directly from NIB
 [ZBarReaderView class];  
 
.在.h文件中加入   ZBarReaderViewDelegate的实现，代码如下:
[cpp] view plain copy
//
//  ViewController.h
//  FootSafety
//
//  Created by 泽宇 徐 on 12-6-12.
//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.
//  
 
#import <UIKit/UIKit.h>
#import "ZBarSDK.h"  
 
@interface ViewController : UIViewController<ZBarReaderViewDelegate>
{
    IBOutlet UILabel  * label ;
    ZBarReaderView *readerView;
    ZBarCameraSimulator *cameraSim;
}  
 
@property(nonatomic,retain) UILabel * label ;
@property (nonatomic, retain) IBOutlet ZBarReaderView *readerView;  
 
@end  
 
.在.m文件中要实现的主要方法是：
 
[html] view plain copy
- (void) readerView: (ZBarReaderView*) view
     didReadSymbols: (ZBarSymbolSet*) syms
          fromImage: (UIImage*) img
{
    // do something useful with results
    for(ZBarSymbol *sym in syms) {
        self.label.text = sym.data;
        break;
    }
}  
 
这里是功能是读取照片信息，把条码放如label显示
 
[html] view plain copy
-(void) viewDidAppear:(BOOL)animated
{
    // run the reader when the view is visible
    [readerView start];
}  
 
这个是在显示视图的时候，启动摄像头，开始扫描
 
[html] view plain copy
- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.  
 
    // the delegate receives decode results
    readerView.readerDelegate = self;  
 
    // you can use this to support the simulator
    if(TARGET_IPHONE_SIMULATOR) {
        cameraSim = [[ZBarCameraSimulator alloc]
                     initWithViewController: self];
        cameraSim.readerView = readerView;
    }  
 
}  
 
在初始化的时候，设置托管。
 
.m文件所有内容是：
[html] view plain copy
//
//  ViewController.m
//  FootSafety
//
//  Created by 泽宇 徐 on 12-6-12.
//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.
//  
 
#import "ViewController.h"  
 
@interface ViewController ()  
 
@end  
 
@implementation ViewController
@synthesize label;
@synthesize readerView;  
 
- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.  
 
    // the delegate receives decode results
    readerView.readerDelegate = self;  
 
    // you can use this to support the simulator
    if(TARGET_IPHONE_SIMULATOR) {
        cameraSim = [[ZBarCameraSimulator alloc]
                     initWithViewController: self];
        cameraSim.readerView = readerView;
    }  
 
}  
 
-(void) viewDidAppear:(BOOL)animated
{
    // run the reader when the view is visible
    [readerView start];
}  
 
- (void) readerView: (ZBarReaderView*) view
     didReadSymbols: (ZBarSymbolSet*) syms
          fromImage: (UIImage*) img
{
    // do something useful with results
    for(ZBarSymbol *sym in syms) {
        self.label.text = sym.data;
        break;
    }
}  
 
- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}  
 
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}  
 
-(void) dealloc
{
    [self.readerView release];
    [self.label release];
    [super dealloc];
}  
 
@end  
 
在ViewController.xib文件中 增加一个view，并且修改view的类是ZBarReaderView ，并且指向 .h文件中定义的
[cpp] view plain copy
ZBarReaderView *readerView;