PerfUtils | A collection of eclectic tools for measuring performance using the cycle counter and pinning threads | Performance Testing library

I fix it updating Android Studio to Canary 16 AND this in gradle.wrapper.properties distributionUrl=https\://services.gradle.org/distributions/gradle-4.7-all.zip

I found the problem, was in the build.gradle ... My retrofit instance was in a separate module. This module is a api:

App build.gradle

Okay, so I found and fixed the problem. JDK location wasn't the same.

In Android Studio it is something like: /private/var/folders/4f/h8xs1k2501j67y1vf24sh2pr0000gn/T/AppTranslocation/F6163339-3902-4A3C-9086-0E9F7A4EE908/d/Android Studio.app/Contents/jre/jdk/Contents/Home

In IntellJ, it was /Library/Java/JavaVirtualMachines/jdk1.8.0_212.jdk/Contents/Home

I copied Studio's JDK path to IntelliJ and it worked.

(You can change it in the Project Structure dialog (CMD + ; on Mac))

The kotlinx.serialization library isn't finished and you're running into one of the outstanding issues: https://github.com/Kotlin/kotlinx.serialization/issues/52

Simply put the maintainers of the serialization library haven't decided the best way to handle primitive arrays yet so they cause issues during compilation, you will need to write your own encoder or convert it to a supported type like List (the issue linked above says this doesn't happen because it would cause performance issues)

As you noted in your comment about the android:onClick="@{vm::doIt}" solution, your onClick handler must have a View parameter, even if you don't use it.

Your workaround of calling your parameter-less buttonClicked method via a lambda will work nicely, so long as the lambda accepts the View parameter. This is easy. Unused parameters to lambdas can be named "_" for clarity. So your onClick handler can be configured thus:

I resolved this issue by uninstalling IntelliJ including all settings/plugins and reinstalling. Uninstalling the IDE without removing settings/plugins did not work.

Thanks for the comments.

This is a known issue, check https://github.com/google/dagger/issues/1245. For now you need to roll back to 2.16

The problem is because kotlin have extension val property for List: size.

The first error says that you have two different kotlin "things" (method and property) which in jvm are the same. And the second error is because you have val implementation in ArrayList and var field in interface so your class Cars needs to implement both setter and getter but implements only getter (from List val size).

The solution is simple: just change your interface property to val size: Int

Looks like some bug and I think it should be on Kotlin issue tracker, but I guess that you can fix it for now by defining receiver as a class: