无法在活动中收集StateFlow

Question

我只是在学习StateFlow。我有一个简单的StateFlow要观察：

private val _userClickedAction = MutableStateFlow( Event(false))
val userClickedAction: StateFlow<Event<Boolean>> = _userClickedAction.stateIn(
    scope = viewModelScope,
    started = WhileSubscribed(5000),
    initialValue = Event(false)
)

我试着在这样的活动中观察到它：

    lifecycleScope.launch {
        repeatOnLifecycle(Lifecycle.State.STARTED) {
            valuePropViewModel.userClickedAction.collect {
                
              valuePropViewModel.actionContext.runActionNamed(SECOND_OPTION_SELECTED)
            }
        }
    }

它不能编译，我得到了编译错误：

Type mismatch. Required: FlowCollector<Event<Boolean>> Found: () → Unit

我使用的是：

//生命周期组件

implementation "androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version"

implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version"

implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version"

implementation "androidx.lifecycle:lifecycle-process:$lifecycle_version"

其中$lifecycle_version = 2.4.0

Answer 1

显然，我使用了错误的collect版本。

implementation("androidx.lifecycle:lifecycle-runtime-ktx:2.4.0-beta01")
implementation("org.jetbrains.kotlinx:kotlinx-coroutines-core:1.5.2")

import kotlinx.coroutines.flow.collect 

Type mismatch inferred type is () -> Unit but FlowCollector was expected