zxing 的常见错误_zxing报错

作者：AllinToyou | 2024-03-13 15:53:22

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zxing报错

问题一：

Undefined symbols for architecture armv7:

"_CVPixelBufferLockBaseAddress", referenced from:

-[ZXingWidgetController captureOutput:didOutputSampleBuffer:fromConnection:] in libZXingWidget.a(ZXingWidgetController.o)

"_CVPixelBufferGetBytesPerRow", referenced from:

-[ZXingWidgetController captureOutput:didOutputSampleBuffer:fromConnection:] in libZXingWidget.a(ZXingWidgetController.o)

"_CMSampleBufferGetImageBuffer", referenced from:

-[ZXingWidgetController captureOutput:didOutputSampleBuffer:fromConnection:] in libZXingWidget.a(ZXingWidgetController.o)

"_CVPixelBufferGetWidth", referenced from:

-[ZXingWidgetController captureOutput:didOutputSampleBuffer:fromConnection:] in libZXingWidget.a(ZXingWidgetController.o)

"_CVPixelBufferGetBaseAddress", referenced from:

-[ZXingWidgetController captureOutput:didOutputSampleBuffer:fromConnection:] in libZXingWidget.a(ZXingWidgetController.o)

"_kCVPixelBufferPixelFormatTypeKey", referenced from:

-[ZXingWidgetController initCapture] in libZXingWidget.a(ZXingWidgetController.o)

"_CVPixelBufferGetHeight", referenced from:

-[ZXingWidgetController captureOutput:didOutputSampleBuffer:fromConnection:] in libZXingWidget.a(ZXingWidgetController.o)

"_CVPixelBufferUnlockBaseAddress", referenced from:

-[ZXingWidgetController captureOutput:didOutputSampleBuffer:fromConnection:] in libZXingWidget.a(ZXingWidgetController.o)

ld: symbol(s) not found for architecture armv7

clang: error: linker command failed with exit code 1 (use -v to see invocation)

解决方法：

Have you referenced all the frameworks to the project?

Make sure these frameworks are added:

a. AVFoundation <- This is probably the one which is causing the prob for you. Make sure this is added.

b. AudioToolbox

c. CoreVideo <- This is second culprit. Check if this is added

d. CoreMedia <- This is second culprit as well. Check if this is added

e. libiconv

f. AddressBook

g. AddressBookUI

问题二：

1.使用zxing的方法参考文档http://blog.csdn.net/icash/article/details/7727299。

2.如果你项目中使用了zxing，但是在xcdoe升级到4.5以后出现Incompatible pointer types sending 'Class' (aka 'Class *') to parameter of type 'id'错误，解决办法：重新下载更新版本的ZXing，可以使用命令下载最新版本：svn checkout http://zxing.googlecode.com/svn/trunk/ zxing-read-only。

3.如果出现了问题Undefined symbols for architecture i386"std::string::c_str() const", referenced from。。。。，

将你项目中的Apple LLVM compiler 4.1 - language中的 c Language Dialect、c++ Language Dialect、c++ standard Library设置成下图所选的值。参考http://stackoverflow.com/questions/12665457/zxing-in-xcode-4-5-and-ios-6

4.编译成功往真机上装的时候出现Choose a destination with a supported architecture in order to run on this device ,由于ios设备不支持armv7s,所以必须将Architectures设置为armv6，但是仅仅需要改动valid architectures就行，不要改动architectures，否则容易引起真机不运行。把architectures改为$(ARCHS_STANDARD_32_BIT)就可以撞到手机上了。见http://blog.sina.com.cn/s/blog_90a0ad8d01013uuh.html

下载：

https://github.com/zxing/zxing/tree/master/iphone

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