Поле явной поддержки не работает в последней версии Kotlin 2.0.0 Android ⇐ Android

[Anonymous]

Я использую Kotlin 2.0.0. Я пытался в своем текущем проекте Android. Я пробовал из этого видео.
class MainActivity : ComponentActivity() {

val state: StateFlow
field = MutableStateFlow(0)

override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
AndroidTheme {
SignInScreenRoute()
}
}
}
}

Это выдает ошибку
Explicit backing field declarations are not supported in FE 1.0

libs.versions.toml
[versions]
androidGradlePlugin = "8.4.1"
kotlin = "2.0.0"
coreKtx = "1.13.1"
junit = "4.13.2"
junitVersion = "1.1.5"
espressoCore = "3.5.1"
lifecycleRuntimeKtx = "2.8.0"
activityCompose = "1.9.0"
composeBom = "2024.05.00"
navigationCompose = "2.7.7"
koinAndroid = "3.5.6"
koinAndroidxCompose = "3.5.6"
ktor = "2.3.10"
appcompat = "1.6.1"
material = "1.12.0"
serialization = "1.6.3"
googleFont = "1.6.7"

[libraries]
androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
junit = { group = "junit", name = "junit", version.ref = "junit" }
androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" }
androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" }
androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
androidx-ui = { group = "androidx.compose.ui", name = "ui" }
androidx-foundation = { group = "androidx.compose.foundation", name = "foundation" }
androidx-foundation-layout = { group = "androidx.compose.foundation", name = "foundation-layout" }
androidx-runtime = { group = "androidx.compose.runtime", name = "runtime" }
androidx-lifecycle-viewmodel-compose = { group = "androidx.lifecycle", name = "lifecycle-viewmodel-compose" }
androidx-navigation = { group = "androidx.navigation", name = "navigation-compose", version.ref = "navigationCompose" }
androidx-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
androidx-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
androidx-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
androidx-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
androidx-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
androidx-material3 = { group = "androidx.compose.material3", name = "material3" }
androidx-material_icons = { group = "androidx.compose.material", name = "material-icons-extended" }
koin-android = { group = "io.insert-koin", name = "koin-android", version.ref = "koinAndroid" }
koin-androidx-compose = { group = "io.insert-koin", name = "koin-androidx-compose", version.ref = "koinAndroidxCompose" }
ktor-client-okhttp = { group = "io.ktor", name = "ktor-client-okhttp", version.ref = "ktor" }
ktor-client-logging = { group = "io.ktor", name = "ktor-client-logging", version.ref = "ktor" }
ktor-client-content-negotiation = { group = "io.ktor", name = "ktor-client-content-negotiation", version.ref = "ktor" }
ktor-client-core = { group = "io.ktor", name = "ktor-client-core", version.ref = "ktor" }
ktor-serialization-kotlinx-json = { group = "io.ktor", name = "ktor-serialization-kotlinx-json", version.ref = "ktor" }
androidx-appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
material = { group = "com.google.android.material", name = "material", version.ref = "material" }
serialization-json = { group = "org.jetbrains.kotlinx", name = "kotlinx-serialization-json", version.ref = "serialization" }
google-font= { group = "androidx.compose.ui", name = "ui-text-google-fonts", version.ref = "googleFont" }

[plugins]
androidApplication = { id = "com.android.application", version.ref = "androidGradlePlugin" }
jetbrainsKotlinAndroid = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
androidLibrary = { id = "com.android.library", version.ref = "androidGradlePlugin" }
serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version. ref = "kotlin" }
compose-compiler = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }

build.gradle.kts(:app)
plugins {
alias(libs.plugins.androidApplication)
alias(libs.plugins.jetbrainsKotlinAndroid)
alias(libs.plugins.compose.compiler)
}

android {
namespace = "com.hub.abc"
compileSdk = 34

defaultConfig {
applicationId = "com.hub.abc"
minSdk = 24
targetSdk = 34
versionCode = 1
versionName = "1.0"

testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
vectorDrawables {
useSupportLibrary = true
}
}

buildTypes {
release {
isMinifyEnabled = false
proguardFiles(
getDefaultProguardFile("proguard-android-optimize.txt"),
"proguard-rules.pro"
)
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_17
targetCompatibility = JavaVersion.VERSION_17
}
kotlinOptions {
jvmTarget = "17"
}
buildFeatures {
compose = true
}
packaging {
resources {
excludes += "/META-INF/{AL2.0,LGPL2.1}"
}
}
}

dependencies {

implementation(project(":network"))
implementation(project(":core:coroutines"))
implementation(project(":core:ui"))
implementation(project(":feature:signup:ui"))
implementation(project(":feature:signup:data"))

implementation(platform(libs.androidx.compose.bom))
implementation(libs.androidx.core.ktx)
implementation(libs.androidx.lifecycle.runtime.ktx)
implementation(libs.androidx.activity.compose)
implementation(libs.androidx.ui)
implementation(libs.androidx.foundation)
implementation(libs.androidx.foundation.layout)
implementation(libs.androidx.runtime)
implementation(libs.androidx.lifecycle.viewmodel.compose)
implementation(libs.androidx.navigation)
implementation(libs.androidx.ui.graphics)
implementation(libs.androidx.ui.tooling.preview)
implementation(libs.androidx.material3)
implementation(libs.koin.android)
implementation(libs.koin.androidx.compose)

implementation(libs.serialization.json)

testImplementation(libs.junit)
androidTestImplementation(libs.androidx.junit)
androidTestImplementation(libs.androidx.espresso.core)
androidTestImplementation(platform(libs.androidx.compose.bom))
androidTestImplementation(libs.androidx.ui.test.junit4)
debugImplementation(libs.androidx.ui.tooling)
debugImplementation(libs.androidx.ui.test.manifest)
}


Подробнее здесь: https://stackoverflow.com/questions/785 ... -0-android