Proguard - PersistenceException: Constructor not matched for class

Question

I am using retrofit2.0 in my app with simpleframework.xml library.

The problem is when I run the app without proguard it works fine however

Answer 1

I guess that your problem is that you are not keeping any attributes and that obviously depends in which attributes you are using. In my case, this is how I dealt with it, let me know if it works for you:

## https://square.github.io/retrofit/ ##
-dontwarn retrofit2.**
-keep class retrofit2.** { *; }
-keepattributes Signature
-keepattributes Exceptions
 -keepclasseswithmembers class * {
    @retrofit2.http.* <methods>;
}

## Simple XML ##
-dontwarn org.simpleframework.xml.stream.**
-keep public class org.simpleframework.** { *; }
-keep class org.simpleframework.xml.** { *; }
-keep class org.simpleframework.xml.core.** { *; }
-keep class org.simpleframework.xml.util.** { *; }

-keepattributes ElementList, Root, *Annotation*

-keepclassmembers class * {
    @org.simpleframework.xml.* *;
}

Answer 2

try adding these below lines in your proguard file. It should solve your problem

-dontnote retrofit2.Platform
-keepattributes Signature
-keepattributes Exceptions

and remove these below lines

-dontwarn retrofit2.**
-keep class retrofit2.** { *; }