Как исправить «Параметр накладки контента, он не используется» при использовании каркасов? ⇐ Android

[Anonymous]

Сегодня я попытался выучить JetPack Compose. Но я сразу же столкнулся с проблемой: по какой -то причине каркас подчеркнут красным, но все работает. Я вроде добавил библиотеку. Может быть, я что -то не так? /> < /p>

Код: Выделить всё

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.activity.enableEdgeToEdge
import androidx.compose.foundation.layout.*
import androidx.compose.material3.*
import androidx.compose.runtime.Composable
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import androidx.navigation.compose.NavHost
import androidx.navigation.compose.composable
import androidx.navigation.compose.rememberNavController
import com.sharky.composedemo.ui.theme.ComposeDemoTheme

class MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
enableEdgeToEdge()
setContent {
ComposeDemoTheme {
MainAppNav()
}
}
}
}

@Composable
fun MainAppNav() {
val navController = rememberNavController()
NavHost(navController, startDestination = "first") {
composable("first") {
FirstScreen(onNavigate = { navController.navigate("second") })
}
composable("second") {
SecondScreen(onBack = { navController.popBackStack() })
}
}
}

@Composable
fun FirstScreen(onNavigate: () -> Unit) {
Scaffold {
Column(
modifier = Modifier
.fillMaxSize()
.padding(16.dp),
verticalArrangement = Arrangement.Center
) {
Text(text = "Это первый экран")
Spacer(modifier = Modifier.height(16.dp))
Button(onClick = onNavigate) {
Text("Перейти на второй экран")
}
}
}
}

@Composable
fun SecondScreen(onBack: () ->  Unit) {
Scaffold {
Column(
modifier = Modifier
.fillMaxSize()
.padding(16.dp),
verticalArrangement = Arrangement.Center
) {
Text(text = "Это второй экран")
Spacer(modifier = Modifier.height(16.dp))
Button(onClick = onBack) {
Text("Назад")
}
}
}
}
< /code>
my build.gradle.kts (: app) < /p>
plugins {
alias(libs.plugins.android.application)
alias(libs.plugins.kotlin.android)
alias(libs.plugins.kotlin.compose)
}

android {
namespace = "com.sharky.composedemo"
compileSdk = 36

defaultConfig {
applicationId = "com.sharky.composedemo"
minSdk = 29
targetSdk = 36
versionCode = 1
versionName = "1.0"

testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
}

buildTypes {
release {
isMinifyEnabled = false
proguardFiles(
getDefaultProguardFile("proguard-android-optimize.txt"),
"proguard-rules.pro"
)
}
}
compileOptions {
sourceCompatibility = JavaVersion.VERSION_11
targetCompatibility = JavaVersion.VERSION_11
}
kotlinOptions {
jvmTarget = "11"
}
buildFeatures {
compose = true
}
}

dependencies {

implementation(libs.androidx.core.ktx)
implementation(libs.androidx.lifecycle.runtime.ktx)
implementation(libs.androidx.activity.compose)
implementation(platform(libs.androidx.compose.bom))
implementation(libs.androidx.ui)
implementation(libs.androidx.ui.graphics)
implementation(libs.androidx.ui.tooling.preview)
implementation(libs.androidx.material3)
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)

implementation("androidx.navigation:navigation-compose:2.9.1")
}
< /code>
и my libs.version.toml < /p>
[versions]
agp = "8.11.0"
kotlin = "2.2.0"
coreKtx = "1.16.0"
junit = "4.13.2"
junitVersion = "1.2.1"
espressoCore = "3.6.1"
lifecycleRuntimeKtx = "2.9.1"
activityCompose = "1.10.1"
composeBom = "2025.06.01"

[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-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" }

[plugins]
android-application = { id = "com.android.application", version.ref = "agp"  }
kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }

, который, как говорится, я могу запустить саму приложение, и оно будет работать.

Подробнее здесь: https://stackoverflow.com/questions/796 ... g-scaffold