Issue
I have a KMM application in which the android target uses Jetpack Compose. I am getting the following error when I try to use a drawable resource:
e: [...]/OnboardingScreen.kt: (33, 46): Unresolved reference: drawable
This is the result of trying to access a drawable via painterResource(id = R.drawable.ic_icon)
.
I have tried the following things to fix the issue:
- Clean and build the project
- Invalidate cache and restart
- Fix all warnings when executing
./gradlew assembleDebug
- The static R class is correctly imported
Nothing of the above solves the problem.
This is my build.gradle.kts of the android module:
plugins {
id("com.android.application")
kotlin("android")
}
val composeVersion = findProperty("version.compose") as String
val composeNavigationVersion = findProperty("version.composeNavigation") as String
val koinVersion = findProperty("version.koin") as String
android {
compileSdk = (findProperty("android.compileSdk") as String).toInt()
defaultConfig {
applicationId = "com.app.app.android"
minSdk = (findProperty("android.minSdk") as String).toInt()
targetSdk = (findProperty("android.targetSdk") as String).toInt()
versionCode = 1
versionName = "1.0"
}
buildFeatures {
compose = true
}
// Set both the Java and Kotlin compilers to target Java 8.
compileOptions {
sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = "1.8"
}
composeOptions {
kotlinCompilerExtensionVersion = composeVersion
}
buildTypes {
getByName("release") {
isMinifyEnabled = false
}
}
}
dependencies {
implementation(project(":shared"))
// Android
implementation("com.google.android.material:material:1.4.0")
// Jetpack Compose
implementation("androidx.compose.ui:ui:$composeVersion")
implementation("androidx.compose.ui:ui-tooling:$composeVersion")
implementation("androidx.compose.foundation:foundation:$composeVersion")
implementation("androidx.compose.material:material:$composeVersion")
implementation("androidx.compose.material:material-icons-core:$composeVersion")
implementation("androidx.compose.material:material-icons-extended:$composeVersion")
implementation("androidx.activity:activity-compose:$composeVersion")
implementation("androidx.navigation:navigation-compose:$composeNavigationVersion")
// Koin
implementation("io.insert-koin:koin-android:$koinVersion")
}
configurations.all {
resolutionStrategy {
force("org.jetbrains.kotlin:kotlin-stdlib:1.5.31")
}
}
My build.gradle.kts of the shared module:
plugins {
kotlin("multiplatform")
kotlin("native.cocoapods")
id("com.android.library")
}
version = "1.0"
kotlin {
android()
iosX64()
iosArm64()
iosSimulatorArm64() // sure all ios dependencies support this target
cocoapods {
summary = "Some description for the Shared Module"
homepage = "Link to the Shared Module homepage"
ios.deploymentTarget = "14.1"
podfile = project.file("../ios/Podfile")
framework {
baseName = "shared"
}
}
val multiplatformVersion = findProperty("version.multiplatformSettings") as String
val koinVersion = findProperty("version.koin") as String
val coroutinesVersion = findProperty("version.coroutines") as String
sourceSets {
val commonMain by getting {
dependencies {
implementation("com.russhwolf:multiplatform-settings-no-arg:$multiplatformVersion")
implementation("io.insert-koin:koin-core:$koinVersion")
implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:$coroutinesVersion")
}
}
val commonTest by getting {
dependencies {
implementation(kotlin("test-common"))
implementation(kotlin("test-annotations-common"))
}
}
val androidMain by getting
val androidTest by getting {
dependencies {
implementation(kotlin("test-junit"))
implementation("junit:junit:4.13.2")
}
}
val iosX64Main by getting
val iosArm64Main by getting
val iosSimulatorArm64Main by getting
val iosMain by creating {
dependsOn(commonMain)
iosX64Main.dependsOn(this)
iosArm64Main.dependsOn(this)
iosSimulatorArm64Main.dependsOn(this)
}
val iosX64Test by getting
val iosArm64Test by getting
val iosSimulatorArm64Test by getting
val iosTest by creating {
dependsOn(commonTest)
iosX64Test.dependsOn(this)
iosArm64Test.dependsOn(this)
iosSimulatorArm64Test.dependsOn(this)
}
}
}
android {
compileSdk = 31
sourceSets["main"].manifest.srcFile("src/androidMain/AndroidManifest.xml")
defaultConfig {
minSdk = 22
targetSdk = 31
}
}
And finally, my gradle.properties:
# Gradle
org.gradle.jvmargs=-Xmx2048M -Dkotlin.daemon.jvm.options\="-Xmx2048M"
# Kotlin
kotlin.code.style=official
# Android
android.useAndroidX=true
android.compileSdk=31
android.targetSdk=31
android.minSdk=22
# MPP
kotlin.mpp.enableGranularSourceSetsMetadata=true
kotlin.mpp.enableCInteropCommonization=true
kotlin.native.enableDependencyPropagation=false
kotlin.native.ignoreDisabledTargets=true
# Common versions
version.multiplatformSettings=0.8.1
version.koin=3.1.4
version.coroutines=1.5.2-native-mt
# Android versions
version.compose=1.0.5
version.composeNavigation=2.4.0-rc01
Thanks in advance.
Solution
Denny Kurniawan's comment above pointed me in the right direction. I had a similar problem after changing the name of my project. At the top of your 'OnboardingScreen.kt' file, check to see if the full 'package' name matches your actual project's name, e.g. "package com.android.application".
If the package name listed in 'OnboardingScreen.kt' is not the same as your actual project's name, then the static R class is probably not being imported correctly and, hence, this error.
In other words, the full package name in 'OnboardingScreen.kt' should match the name of the folder shown under 'app->src->main->java'. Hope this helps someone as it did me.
Answered By - Silverback
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