条码 SDK 支持 iPhone 的一维码、二维码、数据矩阵等
我需要一个条码引擎来支持 iPhone 的以上 3 种条码类型（一维、QR 码、数据矩阵）。我尝试了 zxing、zbar，就我而言，它们不支持数据矩阵。我还找到了一些商业版本。
但我正在寻找一个免费的 SDK。
I need a bar code engine to support above 3 bar code types (1D, QR code, data matrix) for iPhone. I tried zxing, zbar which in my case doesnt support data matrix. I found some commercial versions also.
But I am looking for a free SDK.
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这个问题很老了，但为了完整起见，我还是想回答它。我会推荐 zxing，因为它支持问题中提到的所有代码。
但是，从 iOS7 开始，还可以选择使用 内置扫描仪API（经过几个小时的测试，我发现它比zxing更快、更准确）。我还发现 Cocoa API 更容易与自定义 UI 集成。缺点是（据我所知）不支持 Data Matrix。
第三种选择是巧妙地将两者结合起来，也许还能优雅地回退到 iOS7 之前的设备。
This question is very old, but I'd like to answer it anyway for completeness. I would recommend zxing, as it supports all the codes mentioned in the question.
However, since iOS7 there is also the option of using the built-in scanner API (which I have found quicker and more accurate than zxing after a couple of hours testing). I also found the Cocoa APIs slightly easier to integrate with a custom UI. The downside is that (to my knowledge) Data Matrix is not supported.
A third option would be to use a clever combination of both, maybe also to fall back gracefully for pre-iOS7 devices.
iPhone 没有免费的一维码、二维码、数据矩阵 SDK。 zbar 不支持，我尝试过 zxing 它的工作，但分配的后台工作必须使用 zxing sdk 来完成。
There is no free SDK for1D, QR code, data matrix for Iphone. zbar is not supporting , ive tried zxing its working ,but allot of background work have to be done with zxing sdk.
从 iOS 8 开始，AVFoundation 支持 Data Matrix。请参阅：
https://developer.apple.com/library/prerelease/ios/documentation/AVFoundation/Reference/AVMetadataMachineReadableCodeObject_Class/index.html#//apple_ref/doc/constant_group/Machine_Readable_Object_Types
As of iOS 8, Data Matrix is supported in AVFoundation. see:
https://developer.apple.com/library/prerelease/ios/documentation/AVFoundation/Reference/AVMetadataMachineReadableCodeObject_Class/index.html#//apple_ref/doc/constant_group/Machine_Readable_Object_Types