Swift 3 - 按数组索引访问项目键值

Question

您好，我正在尝试访问我的 plist 中 legs 数组中的项目我希望能够从这个 plist

的腿数组中获取 key = "title" 的值

我已经有了从名为 abs 的字典中获取值的方法，它是以下代码

let path = Bundle.main.path(forResource:"Exercise", ofType: "plist")

let dict:NSDictionary = NSDictionary(contentsOfFile: path!)!
if (dict.object(forKey: "levels") != nil) {

    if let levelDict:[String : Any] = dict.object(forKey: "levels") as? [String : Any] {

        for (key, value) in levelDict {

            if ( key == "something") {                    
                     print(value)
            }
        }
    }
}

但是我不知道如何访问 legs 数组来获取项目标题

Answer 1

所以我设法找到了我最初问题的答案

    let path = Bundle.main.path(forResource: "Exercise", ofType: "plist")
    let dict = NSDictionary(contentsOfFile: path!)!
    let levelArray:AnyObject = dict.object(forKey: "legs")! as AnyObject

    if let nsArray:NSArray = levelArray as? NSArray{

        var levelDict:AnyObject = nsArray[1] as AnyObject //currentLevel is an Int

        //then finally I could get data from a dictionary in the array
        let Title = levelDict["title"] as AnyObject? as! String
        print(Title)

    }

所以现在这将打印 legs 数组中的第二项，即 "leg 2"

Answer 2

在到达 [[String:String]] 类型的 legs 数组时，在您的情况下具有三个元素，每个索引具有两个键对值。您可以遍历该索引并获取您的值，然后迭代到其他索引。

let yourLegsArray:AnyObject = dict.object(forKey: "legs")! as AnyObject

然后迭代 yourLegsArray 并获取 Dict.

的内部值

Swift 3 - 按数组索引访问项目键值

Swift 3 - Access item key values by array index

nsdictionary

plist

nsarray

swift