Java.lang.IllegalStateException: CompositionLocal LocalLifecycleOwner отсутствует при наблюдении LiveData как состояния ⇐ Android

[Anonymous]

Я получаю исключение IllegalStateException при наблюдении LiveData из модели представления как состояния в Activity onCreate. Он жалуется на отсутствие владельца жизненного цикла, однако, насколько я понимаю, ObserveAsState() должен принять жизненный цикл своего владельца, в данном случае активности.
Ниже приведен журнал сбоев:

Код: Выделить всё

java.lang.IllegalStateException: CompositionLocal LocalLifecycleOwner not present
at androidx.lifecycle.compose.LocalLifecycleOwnerKt$LocalLifecycleOwner$1.invoke(LocalLifecycleOwner.kt:26)
at androidx.lifecycle.compose.LocalLifecycleOwnerKt$LocalLifecycleOwner$1.invoke(LocalLifecycleOwner.kt:25)
at kotlin.SynchronizedLazyImpl.getValue(LazyJVM.kt:74)
at androidx.compose.runtime.LazyValueHolder.getCurrent(ValueHolders.kt:46)
at androidx.compose.runtime.LazyValueHolder.readValue(ValueHolders.kt:48)
at androidx.compose.runtime.CompositionLocalMapKt.read(CompositionLocalMap.kt:91)
at androidx.compose.runtime.ComposerImpl.consume(Composer.kt:2366)
at androidx.compose.runtime.livedata.LiveDataAdapterKt.observeAsState(LiveDataAdapter.kt:72)
at com.example.testblockers.MainActivityKt.MyApp(MainActivity.kt:57)
at com.example.testblockers.MainActivity$onCreate$1$1$1.invoke(MainActivity.kt:44)
at com.example.testblockers.MainActivity$onCreate$1$1$1.invoke(MainActivity.kt:43)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:109)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
at androidx.compose.material3.SurfaceKt$Surface$1.invoke(Surface.kt:129)
at androidx.compose.material3.SurfaceKt$Surface$1.invoke(Surface.kt:113)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:109)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:362)
at androidx.compose.material3.SurfaceKt.Surface-T9BRK9s(Surface.kt:110)
at com.example.testblockers.MainActivity$onCreate$1$1.invoke(MainActivity.kt:43)
at com.example.testblockers.MainActivity$onCreate$1$1.invoke(MainActivity.kt:42)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:109)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:362)
at androidx.compose.material3.TextKt.ProvideTextStyle(Text.kt:261)
at androidx.compose.material3.MaterialThemeKt$MaterialTheme$1.invoke(MaterialTheme.kt:81)
at androidx.compose.material3.MaterialThemeKt$MaterialTheme$1.invoke(MaterialTheme.kt:80)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:109)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:362)
at androidx.compose.material3.MaterialThemeKt.MaterialTheme(MaterialTheme.kt:73)
at com.example.testblockers.ui.theme.ThemeKt.TestBlockersTheme(Theme.kt:65)
at com.example.testblockers.MainActivity$onCreate$1.invoke(MainActivity.kt:42)
at com.example.testblockers.MainActivity$onCreate$1.invoke(MainActivity.kt:41)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:109)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
at androidx.compose.ui.platform.ComposeView.Content(ComposeView.android.kt:428)
at androidx.compose.ui.platform.AbstractComposeView$ensureCompositionCreated$1.invoke(ComposeView.android.kt:252)
at androidx.compose.ui.platform.AbstractComposeView$ensureCompositionCreated$1.invoke(ComposeView.android.kt:251)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:109)
at androidx.compose.runtime.internal.ComposableLambdaImpl.invoke(ComposableLambda.jvm.kt:35)
at androidx.compose.runtime.CompositionLocalKt.CompositionLocalProvider(CompositionLocal.kt:362)
at androidx.compose.ui.platform.CompositionLocalsKt.ProvideCommonCompositionLocals(CompositionLocals.kt:186)

Вот модель представления:

Код: Выделить всё

class MainViewModel : ViewModel() {
private val _counterLiveData = MutableLiveData()

// Expose LiveData as immutable
val counterLiveData:  LiveData
get() = _counterLiveData

init {
// Initialize LiveData with default value
_counterLiveData.value = 0
}

fun incrementCounter() {
_counterLiveData.value = (_counterLiveData.value ?: 0) + 1
}
}

Вот действие, в котором я наблюдаю за актуальными данными:

Код: Выделить всё

class MainActivity : ComponentActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)

setContent {
// Initialize ViewModel
val viewModel: MainViewModel = viewModel()

TestBlockersTheme {
Surface(color = MaterialTheme.colorScheme.background) {
MyApp(viewModel)
}
}
}
}
}

@SuppressLint("UnusedMaterial3ScaffoldPaddingParameter")
@OptIn(ExperimentalMaterial3Api::class)
@Composable
fun MyApp(viewModel: MainViewModel) {
// Observe the counterLiveData from the ViewModel
val counterState by viewModel.counterLiveData.observeAsState(initial = 0)

Scaffold(
topBar = {
TopAppBar(
title = { Text("Counter App") }
)
},
content = {
Column(
modifier = Modifier
.fillMaxSize()
.padding(16.dp),
verticalArrangement = Arrangement.Center,
horizontalAlignment = Alignment.CenterHorizontally
) {
Text(
text = "Counter: $counterState",
style = MaterialTheme.typography.bodyMedium
)
Spacer(modifier = Modifier.height(16.dp))
Button(onClick = { viewModel.incrementCounter() }) {
Text("Increment")
}
}
}
)
}

Ниже приведены зависимости Gradle:

Код: Выделить всё

dependencies {
implementation("androidx.core:core-ktx:1.13.0")
implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.7.0")
implementation("androidx.activity:activity-compose:1.9.0")
implementation(platform("androidx.compose:compose-bom:2023.03.00"))
implementation("androidx.compose.ui:ui")
implementation("androidx.compose.ui:ui-graphics")
implementation("androidx.compose.ui:ui-tooling-preview")
implementation("androidx.compose.material3:material3")
testImplementation("junit:junit:4.13.2")
androidTestImplementation("androidx.test.ext:junit:1.1.5")
androidTestImplementation("androidx.test.espresso:espresso-core:3.5.1")
androidTestImplementation(platform("androidx.compose:compose-bom:2023.03.00"))
androidTestImplementation("androidx.compose.ui:ui-test-junit4")
debugImplementation("androidx.compose.ui:ui-tooling")
debugImplementation("androidx.compose.ui:ui-test-manifest")
// jsoup HTML parser library @ https://jsoup.org/
implementation("org.jsoup:jsoup:1.17.2")
implementation("androidx.lifecycle:lifecycle-viewmodel-compose:2.7.0")
implementation("androidx.compose.runtime:runtime-livedata:1.7.0-alpha07")
implementation("androidx.lifecycle:lifecycle-runtime-compose:2.7.0")
implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:2.7.0")
}

Кто-нибудь знаком с этой проблемой?

Подробнее здесь: https://stackoverflow.com/questions/783 ... not-presen