CODEWITHSUNDEEP
androidandroid-studiolambdajava-8android-studio-2.3
Amarjit Dhillon
Amarjit Dhillon

Reputation: 2816

Error:Jack is required to support java 8 language features. Either enable Jack or remove sourceCompatibility JavaVersion.VERSION_1_8

As per mentioned in developer.android website

"The Jack toolchain is deprecated, as per this announcement. If your project depends on Jack, you should migrate to using Java 8 support built into Android Studio’s default toolchain."

enter image description here

I need to use lambda expressions so I have disabled the jack options, but when I compile my code, I get the following error

Error:Jack is required to support Java 8 language features. Either enable Jack or remove sourceCompatibility JavaVersion.VERSION_1_8.

Below is the screenshot of my build.gradle file

enter image description here

Upvotes: 10

Views: 14022

Answers (2)

Denys Lobur
Denys Lobur

Reputation: 124

You should do the following:

  • Update your Android Studio to version 3.0.1.

  • Upgrade your gradle to 'com.android.tools.build:gradle:3.0.1'

  • Make sure you buildToolsVersion is at least 26.0.2.

After that you can remove Jack options and use supported Java 8 features.

Upvotes: 4

Yura Shinkarev
Yura Shinkarev

Reputation: 5354

Check you version of com.android.tools.build:gradle.

I had the same error. My solution:

  • set com.android.tools.build:gradle:3.0.0-alpha6
  • update kotlin to 1.1.3-2
  • add to repositories google()

I'm using AS 3.0 Canary 6.

Upvotes: 21

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