Anko: Proguard Warning: org.jetbrains.anko.internals.AnkoInternals: can't find referenced method 'int getThemeResId()' in library class android.view.ContextThemeWrapper

[cypressious]

When building with Anko 0.9 and with ProGuard, I get the following warning which fails the build:

Warning: org.jetbrains.anko.internals.AnkoInternals: can't find referenced method 'int getThemeResId()' in library class android.view.ContextThemeWrapper

[cypressious]

When you ignore the warning, you get a different one:

java.lang.IllegalArgumentException: Stacks have different current sizes [0] and [1]
Unexpected error while performing partial evaluation:
Class = [org/jetbrains/anko/AsyncKt$doAsync$1]
Method = [invoke()Ljava/lang/Object;]
Exception = java.lang.IllegalArgumentException

[fboldog]

This call only works with android.support.v7.view.ContextThemeWrapper because in system framework base ContextThemeWrapper is hide this call and the existence of getThemeResId not guaranteed.

[cypressious]

You need to use the proguard-android-optimize.txt configuration for ProGuard for https://github.com/Kotlin/anko/issues/206#issuecomment-225512019 to appear.

[wiradikusuma]

Any workaround while waiting 0.9.1?

[fboldog]

Yes, clone, build, import into your project. ;)

[LloydBlv]

@fboldog do we have any fix other than building and compiling the project on this issue?

[BoD]

Am I understanding correctly that it is currently not possible to use Anko and have proguard enabled because of this issue?

[ChristianBecker]

@BoD: You can of course use an older version, like 0.8.3:

    compile 'org.jetbrains.anko:anko-common:0.8.3'

[BoD]

ok :'(

[BoD]

Just to clarify, for future people having the same problem: the workaround is to add
-dontwarn org.jetbrains.anko.internals.AnkoInternals to your proguard config file
and to use proguard-android.txt (not proguard-android-optimize.txt) in your gradle build file.

[LouisCAD]

Thanks! Version 0.9.1 which is released fixes this issue!