iOS 应用实现条形码扫描功能的方法

本文转自 http://wangjun.easymorse.com/?p=1199

    iOS 应用里实现条形码扫描功能，有个免费开源的 SDK：ZBar（http://zbar.sourceforge.net/iphone/sdkdoc/install.html）下面是实现的效果：



利用条形码，可以简单的得到二维码的值。具体的实现过程如下:
下载 ZBar 的 SDK
创建工程，iphone.scanbar
把下载的 ZBarSDK 添加到工程中
添加 .framework 到工程中



添加一个按钮，处理效果。
    #pragma mark –

    #pragma mark onClickButton

    -(IBAction)onButton:(id)sender

    {

        ZBarReaderViewController *reader = [ZBarReaderViewController new];

        reader.readerDelegate = self;

        ZBarImageScanner *scanner = reader.scanner;

        [scanner setSymbology: ZBAR_I25

                       config: ZBAR_CFG_ENABLE

                           to: 0];

        [self presentModalViewController: reader

                                animated: YES];

        [reader release];

    }

    - (void) imagePickerController: (UIImagePickerController*) reader

    didFinishPickingMediaWithInfo: (NSDictionary*) info

    {

        id<NSFastEnumeration> results =

        [info objectForKey: ZBarReaderControllerResults];

        ZBarSymbol *symbol = nil;

        for(symbol in results)

            break;

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

        resultText.text = symbol.data;

        resultImage.image =

        [info objectForKey: UIImagePickerControllerOriginalImage];

        [reader dismissModalViewControllerAnimated: YES];

    }

    源代码：http://easymorse-iphone.googlecode.com/svn/trunk/iphone.scanbar/