iphone开发 二维码和条形码的识别

具体操作步骤：

download ZBar SDK from here

add below frameworks in your project

AVFoundation.framework

CoreGraphics.framework

CoreMedia.framework

CoreAudio.framework

CoreVideo.framework

QuartzCore.framework

libiconv.dylib

Add the library downloaded libzbar.a of zip in the frameworks

import header in your class and confirm it's delegate

#import "ZBarSDK.h"

and

@interface ViewController : UIViewController <ZBarReaderDelegate>

5.scan image

- (IBAction)startScanning:(id)sen
4000
der {

NSLog(@"Scanning..");
resultTextView.text = @"Scanning..";

ZBarReaderViewController *codeReader = [ZBarReaderViewController new];
codeReader.readerDelegate=self;
codeReader.supportedOrientationsMask = ZBarOrientationMaskAll;

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

[self presentViewController:codeReader animated:YES completion:nil];

}

6.get the result in

- (void) imagePickerController: (UIImagePickerController*) reader didFinishPickingMediaWithInfo: (NSDictionary*) info
{
//  get the decode results
id<NSFastEnumeration> results = [info objectForKey: ZBarReaderControllerResults];

ZBarSymbol *symbol = nil;
for(symbol in results)
// just grab the first barcode
break;

// showing the result on textview
resultTextView.text = symbol.data;

resultImageView.image = [info objectForKey: UIImagePickerControllerOriginalImage];

// dismiss the controller
[reader dismissViewControllerAnimated:YES completion:nil];
}

参考用例：How
to use Barcode Scanner (BR and QR) in iPhone Tutorial (using ZBar)