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.