kotlin - 可变实时数据 : Cannot invoke setValue on a background thread from Coroutine

Question

我正在尝试从协程触发对 LiveData 的更新:

object AddressList: MutableLiveData<List<Address>>()
fun getAddressesLiveData(): LiveData<List<Address>> {
    AddressList.value = listOf()
    GlobalScope.launch {
        AddressList.value = getAddressList()
    }
    return AddressList
}

但我收到以下错误:

IllegalStateException: Cannot invoke setValue on a background thread

有没有办法让它与协程一起工作？

Answer 1

使用 liveData.postValue(value)而不是 liveData.value = value .它被称为异步。

来自 documentation :

postValue - Posts a task to a main thread to set the given value.