NoClassDeffoundError:com.alipay.android.app.sdk.R$String 错误

jiangyongyuan

于 2015-04-10 20:27:21 发布

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文章标签： android

本文链接：https://blog.youkuaiyun.com/jiangyongyuan/article/details/84711472

本文解决了一个常见的Android应用集成支付宝支付时遇到的NoClassDefFoundError问题。错误原因是将alipay_lib作为普通的jar文件引入项目，而非作为一个lib项目引用。文章提供了正确的集成方法，包括如何正确配置lib项目。

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运行alipay支付，结果一直报这个错，最终，在stackoverflow中找到了答案，alipay_lib需要以lib项目引入，而不是把jar引入。都怪没好好看文档。。。

NoClassDeffoundError:com.alipay.android.app.sdk.R$String 错误

Referring library project .. gives NoClassDeffoundError for R files

http://stackoverflow.com/questions/11407190/referring-library-project-gives-noclassdeffounderror-for-r-files

You're probably not importing it the right way. There are two ways of importing android code into a project

Jar file: Should not have any kind of resource, as of right know you will not be allowed to access it.

Library project: You import the project into the workspace as a standalone app, and in the project that needs the library, reference it at Properties->Android->Library->Add.

Jar files are just zipped code. You can copy&paste into lib, and add them at the BUILD_PATH. But library projects are reference. Is not gonna work if you just copy&paste the project into the libs folder, as you said.

It seems you're mixing both.