在proguard-project.txt文件加入忽略警告，忽略lib，忽略类
-dontwarn com.alibaba.fastjson.**
-libraryjars libs/fastjson-1.1.23.jar-keep class com.alibaba.fastjson.** { *; }
-optimizationpasses 5 -dontusemixedcaseclassnames -dontskipnonpubliclibraryclasses -verbose -ignorewarnings -optimizations !code/simplification/arithmetic,!field/*,!class/merging/* -libraryjars libs/fastjson-1.1.23.jar
原文链接：https://www.f2er.com/json/289812.html