Swift 使用不同的键和值解析字典

我有一本这样的字典：

var mapNames: [String: [String]] = 
    [
          "A": ["A1", "A2"],
          "B": ["B1"],
          "C": ["C1", "C2", "C3"]
    ]

现在我有了第一视图控制器的tableview功能：

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) {

 //I want to print "A", "B", "C" here.

}

在我的第二视图控制器的tableview“func”中：

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

  //If user taps on "A" in the 1st VC, show here cells with "A1", "A2"

}  

有人可以帮助我如何解析字典，首先获取键列表，然后为每个键获取对应值列表

---

谢谢。

要解决此问题，请尝试将

字典

拆分为

数组

例如：

var mapNames: [String: [String]] =
[
    "A": ["A1", "A2"],
    "B": ["B1"],
    "C": ["C1", "C2", "C3"]
]

var mapNamesKeys  = mapNames.keys

var mapNamesValues  = mapNames.values

---

要解决此问题，请尝试将

字典

拆分为

数组

例如：

var mapNames: [String: [String]] =
[
    "A": ["A1", "A2"],
    "B": ["B1"],
    "C": ["C1", "C2", "C3"]
]

var mapNamesKeys  = mapNames.keys

var mapNamesValues  = mapNames.values

---

正如Eric所指出的，您应该先阅读文档。要获取字典的键值，需要执行以下操作：

for (key, value) in mapNames {
   print(key)
   print(mapNames[key])
}

---

正如Eric所指出的，您应该先阅读文档。要获取字典的键值，需要执行以下操作：

for (key, value) in mapNames {
   print(key)
   print(mapNames[key])
}

---

要从字典中获取所有键，请使用

let keys = mapNames.keys
//keys is the array you need on 1st view controller

现在，要获取每个

键对应的数组，请使用

for key in keys
{
    let value = mapNames[key]
    //value is the array you need on 2nd view controller corresponding to the selected key
}

要从字典中获取所有键，请使用

let keys = mapNames.keys
//keys is the array you need on 1st view controller

现在，要获取每个
键对应的数组，请使用

for key in keys
{
    let value = mapNames[key]
    //value is the array you need on 2nd view controller corresponding to the selected key
}

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