Using GSON with proguard enabled

Question

My code works perfectly without proguard, but GSON doesn\'t work when proguard is enabled.

This is the part of code where it doesn\'t works

JSONArray         


        

Answer 1

Variable names will be obfuscated with proguard, leaving you with something like

private String a;

Instead of

private String descripcionCategoria;

You can add proguard rules so some classes don't get obfuscated. I got away with it using these:

-keepattributes Signature
# POJOs used with GSON
# The variable names are JSON key values and should not be obfuscated
-keepclassmembers class com.example.apps.android.Categorias { ; }
# You can apply the rule to all the affected classes also
# -keepclassmembers class com.example.apps.android.model.** { ; }

If your POJO class name is also used for parsing then you should also add the rule

-keep class com.example.apps.android.model.** { ; }

In your case, annotations are not used, you would need this if you do

# Keep the annotations
-keepattributes *Annotation*

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Another way to solve this problem is to use the SerializedName annotation and let the class get obfuscated. For this you will still need the -keepattributes *Annotation* rule.

import com.google.gson.annotations.SerializedName

@SerializedName("descripcionCategoria")
private String descripcionCategoria;