我想将异步获取的一些JSON放在一个对象中,并在闭包中返回。但是我的代码给出了错误。
func postToWebSwervice (aString:String,completion:@escaping (_ response:Array<Any>)->(MyObject)){
//get some JSON from web
let myObject = MyObject()
//parse JSON
myObject.title = "Palo Alto"
myObject.temp = 62
DispatchQueue.main.async {//open async
completion( myObject )
}
}
我遇到错误:'Cannot convert object of type myObject to closure result type Void (aka ())
我收集到您无法“返回”对象。但是正确的语法是什么,以便在完成时可用于调用方法?
谢谢您的建议。
答案 0 :(得分:1)
将Array<Any>
替换为MyObject
(您需要更改诸如thi之类的完成块语法)
func postToWebSwervice (aString:String,completion:@escaping (_ response: MyObject)-> Void){
//get some JSON from web
let myObject = MyObject()
//parse JSON
myObject.title = "Palo Alto"
myObject.temp = 62
DispatchQueue.main.async {//open async
completion( myObject )
}
}