NullPointerExcepetion Facebook sdk v4.5.0 when enable Proguard (when try to login using Parse library)

Question

I\'m trying to login with Facebook using ParseFacebookUtils library and it\'s working good but when i enabled the Proguard file i have this exception on Facebook login activ

Answer 1

You have to add below lines into your file, That will resolve your problem.

Only need to add below lines.

-dontwarn com.facebook.**
-keep class com.facebook.** { *; }
-keepattributes Signature  

1. ignore the warning, or don't warn for the package com.facebook
2. keep the classes & inner classes as well inside that package.
3. keep the signature of attribute.