给Android.mk添加 '-dontwarn' 属性，避开第三方jar包错误-优快云博客

本文链接：https://blog.youkuaiyun.com/shijianduan1/article/details/56488059

平台引用第三方jar包报错，而报错内容不影响使用，可以使用 '-dontwarn'

Reading library jar [/media/bak_data/data/shengjindong/eM10/out/target/common/obj/JAVA_LIBRARIES/volley_intermediates/classes.jar]
Warning: okio.DeflaterSink: can't find referenced class org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
Warning: okio.Okio: can't find referenced class java.nio.file.Files
Warning: okio.Okio: can't find referenced class java.nio.file.Files
Warning: okio.Okio: can't find referenced class java.nio.file.Files
Warning: okio.Okio: can't find referenced class java.nio.file.Path
Warning: okio.Okio: can't find referenced class java.nio.file.OpenOption
Warning: okio.Okio: can't find referenced class java.nio.file.Path
Warning: okio.Okio: can't find referenced class java.nio.file.OpenOption
Warning: okio.Okio: can't find referenced class org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
Warning: okio.Okio: can't find referenced class java.nio.file.Path
Warning: okio.Okio: can't find referenced class java.nio.file.OpenOption
Warning: okio.Okio: can't find referenced class java.nio.file.Path
Warning: okio.Okio: can't find referenced class java.nio.file.OpenOption
Warning: okio.Okio: can't find referenced class org.codehaus.mojo.animal_sniffer.IgnoreJRERequirement
Warning: there were 14 unresolved references to classes or interfaces.
         You may need to add missing library jars or update their versions.
         If your code works fine without the missing classes, you can suppress
         the warnings with '-dontwarn' options.
         (http://proguard.sourceforge.net/manual/troubleshooting.html#unresolvedclass)
Error: Please correct the above warnings first.

解决方案：

android.mk添加命令

LOCAL_PROGUARD_FLAG_FILES := proguard.cfg

和android.mk同目录下，添加文件proguard.cfg，文件内容：（即后面跟随包名，是的只有一行）
```
-dontwarn okio.**
```

参考文档：android mk文件编写（他这个主要是为了处理混淆产生的问题）