Android Studio - How to specify "-jvm-target" option in Java/Kotlin module?

Question

Recently, I was trying to create a Java/Kotlin module for my Android application. When I was creating Retrofit Interceptor, there was an error saying:

Cannot inline bytecode built with JVM target 1.8 into bytecode that is being built with JVM target 1.6. Please specify proper '-jvm-target' option.

Here is the screen shot of the exact error:

I know how to set -jvm-target for my Android module. But I am not able to find an answer for how to set it in Java/Kotlin module.

Here is what I have already tried:

[Solution 1 (Not Working)]

sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8

compileKotlin {
    targetCompatibility(JavaVersion.VERSION_1_8)
}

[Solution 2 (Not Working)]

kotlinOptions {
    jvmTarget = JavaVersion.VERSION_1_8.toString()
}

Above code gave me following error:

Could not find method kotlinOptions() for arguments

score 7 · Answer 1 · answered Jun 06 '20 at 19:16

7

I have the following in the build script for my Kotlin module, which works for my project:

apply plugin: 'kotlin'

compileKotlin {
    kotlinOptions.jvmTarget = JavaVersion.VERSION_1_8
}

dependencies {
    // your dependencies...
}

answered Jun 06 '20 at 19:16

Martin

1,775
1
13
10

For future readers: this solution worked for me on Kotlin (non Android) module. – nglauber May 25 '21 at 16:22
This is the correct answer. Better than specifying a version number in a string. – JCutting8 Jun 14 '23 at 08:25

score -2 · Answer 2 · answered May 07 '20 at 16:36

-2

New gradle version support like this

compileOptions {
        sourceCompatibility = 1.8
        targetCompatibility = 1.8
    }

answered May 07 '20 at 16:36

Vishal Patel

2,931
3
24
60

And what about Kotlin? – JCutting8 Jun 14 '23 at 08:27

Android Studio - How to specify "-jvm-target" option in Java/Kotlin module?

2 Answers2