WARNING: API 'variant.getJavaCompile()' is obsolete and has been replaced with 'variant.getJavaCompileProvider()'

I face this issue after updating to 3.3.0

If you are not doing what error states in gradle file, it is some plugin that still didn't update to the newer API that cause this. To figure out which plugin is it do the following (as explained in "Better debug info when using obsolete API" of 3.3.0 announcement):

• Add 'android.debug.obsoleteApi=true' to your gradle.properties file which will log error with a more details
• Try again and read log details. There will be a trace of "problematic" plugin
• When you identify, try to disable it and see if issue is gone, just to be sure
• go to github page of plugin and create issue which will contain detailed log and clear description, so you help developers fix it for everyone faster
• be patient while they fix it, or you fix it and create PR for devs

Hope it helps others

This issue is fixed now with update Fabric Gradle version 1.30.0:

Update release: March 19, 2019

Please see this Link: https://docs.fabric.io/android/changelog.html#march-15-2019

Please update your classpath dependency in project level Gradle:

buildscript {
    // ... repositories, etc. ...

    dependencies {
        // ...other dependencies ...
        classpath 'io.fabric.tools:gradle:1.30.0'
    }
}

In my case, it was caused from gms services 4.3.0. So i had to change it to:

com.google.gms:google-services:4.2.0

I have found this by running:

gradlew sync -Pandroid.debug.obsoleteApi=true

in terminal. Go to view -> tool windows -> Terminal in Android Studio.