java.lang.VerifyError: Verifier rejected class on Lollipop when using release APK

Question

I get this error when I install my release APK on a 5.x device. The error does not occur when I push the same code from Android Studio, or if I run it on a

Answer 1

In my case, the cause is proguard. My app shutdown on sumsung note3 whick is android 5.0.
I imported the android-async-http-1.4.9.jar, the proguard is:

-dontwarn com.loopj.android.http.**
-keep class com.loopj.android.http.**{*;}

It is not enough. I added:

-dontwarn cz.msebera.**
-keep class cz.msebera.**{*;}

the bug gone.

so if you come into this bug, the deep-seated reason maybe not obvious, it is to be noted the proguard file.