使用zbar,来扫描各种条形码

 1.新建一个工程A:view-base
 2.拖动zbar框架到工程目录下
 3.然后把zbar/iphone目录下的工程.xproj文件拖到A
 4.在工程的Link Binary添加框架如下:
 libzbar.a
 QuartzCore.framework
 libiconv.dylib
 5.添加#import "ZBarReaderController.h"
 -(IBAction) startScan
 {
     ZBarReaderController *reader = [[[ZBarReaderController alloc] init] autorelease];
     reader.delegate = self;
     reader.cameraMode = ZBarReaderControllerCameraModeSampling;

     ZBarImageScanner *scanner = reader.scanner;
     [scanner setSymbology: ZBAR_I25 config: ZBAR_CFG_ENABLE to:0];

     [self presentModalViewController: reader animated:YES];

 }
 - (void) imagePickerController: (UIImagePickerController*) picker didFinishPickingMediaWithInfo: (NSDictionary*) info
 {
     UIImage *image = [info objectForKey: UIImagePickerControllerOriginalImage];

     id<NSFastEnumeration> results = [info objectForKey: ZBarReaderControllerResults];
     ZBarSymbol *symbol = nil;

     for(symbol in results)
     {
         break;
     }

     if(!symbol || !image)
     {
         return;
     }

     NSLog(@"symbol.data = %@", symbol.data);

 //最关键的移行代码
     self.resultLabel.text = symbol.data;

     [picker dismissModalViewControllerAnimated: YES];
 }
 6.给.h添加<UINavigationControllerDelegate,UIImagePickerControllerDelegate>
 辅助:
 zbarTest02是自己研究的源代码.