Unresolved reference: ext when convert gradle to gradle.kts

Question

By default when I create a compose app from Android Studio, it will give me ext as below in my root project build.gradle.

buildscript {
    ext {
        compose_version = '1.0.0'
    }
    repositories {
        google()
        mavenCentral()
    }
}

As I change it to build.gradle.kts, it will complaint

Unresolved reference: ext
Unresolved reference: compose_version
Too many characters in a character literal ''1.0.0''

How can I resolve this issue?

Try this https://stackoverflow.com/a/53927378/8826599 Cheers — Jakub Pruszyński, Sep 25 '21 at 06:14

score 5 · Answer 1 · answered Sep 25 '21 at 06:48

I use

buildscript {
    extra.apply{
        set("compose_version", "1.0.0")
    }
    repositories {
        google()
        mavenCentral()
    }

To access it from other gradle files, I need to explicitly set to a variable

val composeVersion = rootProject.extra.get("compose_version") as String

Then I can use it like

composeOptions {
    kotlinCompilerExtensionVersion = composeVersion
}

and

dependencies {
   implementation ("androidx.compose.ui:ui:$composeVersion")
}

`val composeVersion = rootProject.extra["compose_version"]` is an alternative — Blundell, Oct 14 '21 at 18:25

score 2 · Answer 2 · answered Jan 20 '23 at 20:56

Set it like this:

val composeVersion by extra("1.0.0")

Use it like this:

val composeVersion: String by rootProject.extra

Groovy allows you to use single quotes for strings, but Kotlin requires double quotes. Change all the strings in your kts files to use double quotes to get rid of the Too many characters in a character literal error.

Unresolved reference: ext when convert gradle to gradle.kts

2 Answers2

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