如何从 Swift 中的对象字典中获取键和值？答案

【问题标题】：How to get key and value from dictionary of objects in Swift?如何从 Swift 中的对象字典中获取键和值？
【发布时间】：2016-07-22 06:46:42
【问题描述】：

谁能帮我把这个数组中的键值打印到控制台吗？

当我给出键名时，我能够遍历数组并打印出一个值。但我不知道如何循环遍历键值。

var tableDataGates : [[String:String]] = [
      ["TopTitle" : "Gate A1", "MiddleText" : "Lissabon", "MiddleTextExtra" : "15:15","BottomText" : "Check-in opens at", "BottomTextExtra" : "15:00", "TimeToEndPoint" : "10"]
]

for x in 0 ..< tableDataGates.count {
    print(tableDataGates[x]["TopTitle"]); //PRINTS "GATE A1"
}

提前致谢

【问题讨论】：

标签： arrays swift loops dictionary

【解决方案1】：

你可以这样做：

var tableDataGates : [[String:String]] = [
    ["TopTitle" : "Gate A1", "MiddleText" : "Lissabon", "MiddleTextExtra" : "15:15","BottomText" : "Check-in opens at", "BottomTextExtra" : "15:00", "TimeToEndPoint" : "10"]
]

for gate in tableDataGates {
    for (key, value) in gate {
        print("\(key): \(value)")
    }
}

哪个输出：

MiddleText: Lissabon
TimeToEndPoint: 10
TopTitle: Gate A1
BottomTextExtra: 15:00
BottomText: Check-in opens at
MiddleTextExtra: 15:15

【讨论】：