proguard problem after updating to android gradle plugin 3.5

Question

I save the json presentation of some objects as cache in my app. I had no problem after updating each release of the app and json objects was corre

Answer 1

I should exclude cached objects from obfuscating but temporarily I disabled R8 and enabled proguard, by adding this line to gradle.properties file:

android.enableR8=false

And adding this line to app build.gradle file:

useProguard true
minifyEnabled true

And the problem solved.