swift - 无法将 type() 的值转换为 Swift 2 中的闭包结果类型 NSDictionary

Question

我必须返回这个函数的值。我在这一行中遇到错误

func GetStation(url : String, completionHandler: (stationDictionary: NSDictionary) -> ()) {
    getResonse(url, completionhandler: { (dict) -> NSDictionary in
       completionHandler(stationDictionary: dict) // Error on this line 
    })
}

Answer 1

这肯定会奏效。

func GetStation(url : String, completionHandler: (stationDictionary: NSDictionary) -> NSDictionary) {
    getResonse(url, completionhandler: { (dict) -> NSDictionary in
       completionHandler(stationDictionary: dict) // Error on this line 
    })
}

并像这样使用它，

var dict = NSDictionary()
temp.GetStation("your url") { (stationDictionary) -> NSDictionary in
    dict = stationDictionary;
    print("your dictionary := \(stationDictionary)")
}