Hi guys, somebody encountered with problem on compiling in project with kotlin? I have message in gradle console: e: Supertypes of the following classes cannot be resolved. Please make sure you have the required dependencies in the classpath: class android.support.v4.app.FragmentActivity, unresolved supertypes: android.support.v4.app.ActivityCompatApi23.RequestPermissionsRequestCodeValidator But some time ago it compiled successful.

have you tried

./gradlew clean

?

sure, I’ve found reason, it’s was not related with kotlin, i’ve different SupportLibrary version between modules.

Be careful using different support library version on you project