本文介绍了一种在Xcode4.6.1环境下使用zxing版本r2461时遇到的问题，当将项目部署到iPhone5设备时，会出现ld: symbol(s) not found for architecture armv7s的错误。文章提供了详细的解决方案，包括如何正确设置项目的“Architectures”和“Valid Architectures”。
环境：xcode4.6.1 zxing版本r2461 设备iphone5
问题描述：使用模拟器编译没问题，但是编译进device会出错
ld: warning: ignoring file xx/Build/Products/Debug-iphoneos/libZXingWidget.a, file was built for archive which is not the architecture being linked (armv7s): xx/Build/Products/Debug-iphoneos/libZXingWidget.a
"_OBJC_CLASS_$_ZXingWidgetController", referenced from:
objc-class-ref in MZHomePageViewController.o
"_OBJC_CLASS_$_QRCodeReader", referenced from:
objc-class-ref in MZHomePageViewController.o
ld: symbol(s) not found for architecture armv7s
解决方案：设置“Architectures" 和 "Valid Architectures
如图所示：
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