android代码混淆后gson无法解析问题

proguard-project.txt里添加以下代码

-proguard-project.txt
##---------------Begin: proguard configuration for Gson  ----------
# Gson uses generic type information stored in a class file when working with fields. Proguard
# removes such information by default, so configure it to keep all of it.
-keepattributes Signature


# Gson specific classes
-keep class com.google.gson.stream.** { *; }




# Application classes that will be serialized/deserialized over Gson
-keep class com.google.gson.examples.android.model.** { *; }




##---------------End: proguard configuration for Gson  ----------