Compose 桌面上缺少主调度程序

Question

尝试将 Jetpack ViewModel 集成到 KMP 项目中。

使用以下配置，桌面应用程序无法编译（错误如下）。

libs.versions.toml

androidxLifecycle = "2.8.0"
koin-compose = "1.2.0-Beta4"
navigation-compose = "2.8.0-alpha02"

androidx-lifecycle-viewmodel = { module = "androidx.lifecycle:lifecycle-viewmodel", version.ref = "androidxLifecycle" }
koin-compose-viewmodel = { module = "io.insert-koin:koin-compose-viewmodel", version.ref = "koin-compose" }
navigation-compose = { module = "org.jetbrains.androidx.navigation:navigation-compose", version.ref = "navigation-compose" }

科因

viewModelOf(::MyViewModel)

MyViewModel.kt

class MyViewModel(useCase: MyUseCase): androidx.lifecycle.ViewModel() {
    val data = useCase()
          .stateIn(
              scope = viewModelScope,
              SharingStarted.Eagerly,
              initialValue = emptyList()
          )
    ...
}

编译时异常

Exception in thread "AWT-EventQueue-0" java.lang.IllegalStateException: Module with the Main dispatcher is missing. Add dependency providing the Main dispatcher, e.g. 'kotlinx-coroutines-android' and ensure it has the same version as 'kotlinx-coroutines-core'

Answer 1

要为 Compose Desktop 提供主调度程序，您可以使用

org.jetbrains.kotlinx:kotlinx-coroutines-swing

中的 kotlinx.coroutines 依赖项。

对于其他平台，请参阅可用的UI 协程列表