从自定义平面列表视图调用异步功能

Question

我试图在客户平面视图中调用异步函数，但是在自定义平面视图中使用await导致出现错误：

async _customFlatlistView(item){
    promise = await SomeFunction(); 

    promise2 = await SomeOtherFunction();
}

Answer 1

await仅可用于async函数

_customFlatlistView = async item => {
  promise = await SomeFunction()
  promise2 = await SomeOtherFunction()
}

Answer 2

await关键字只能用于将async关键字添加到方法签名中：

    async _customFlatlistView(item){
        promise = await SomeFunction(); 

        promise2 = await SomeOtherFunction();
    }