Question

我有这个数组，用于在＆＃39;块上存储一些小数据。在swift。

我曾经有过三个名为blockNames，blockTypes和blockImages的词典。但是，我想把所有东西放在一个地方。我想使用以下格式，但我假设我可以像读取它一样; blockData[0.0]["image"]获取块0.0的图像。但是它将数组定义为双打，将其中的字典定义为NSObjects。

这是我在谈论的数组

let blockData = [
    // ===== 0.0 - Air =====
    0.0:[
        "name":"Air",
        "image":"0.0.png",
        "type":"custom"
    ],
    0.1:[
        "name":"barrier",
        "image":"barrier",
        "type":"custom"
    ],
    // ===== 1.0 - Dirt =====
    1.0:[
        "name":"Dirt - Center",
        "image":"1.0.png",
        "type":"solid"
    ],
    1.1:[
        "name":"Dirt width Grass - Center",
        "image":"1.1.png",
        "type":"solid"
    ],
    1.2:[
        "name":"Dirt width Grass - Left",
        "image":"1.2.png",
        "type":"solid"
    ],
    1.3:[
        "name":"Dirt width Grass - Right",
        "image":"1.3.png",
        "type":"solid"
    ],
    1.4:[
        "name":"Dirt - Left",
        "image":"1.4.png",
        "type":"solid"
    ],
    1.5:[
        "name":"Dirt - Right",
        "image":"1.5.png",
        "type":"solid"
    ],
    1.6:[
        "name":"Dirt with Flat Top - Center",
        "image":"1.6.png",
        "type":"solid"
    ],
    1.7:[
        "name":"Dirt with Flat Top - Left",
        "image":"1.7.png",
        "type":"solid"
    ],
    1.8:[
        "name":"Dirt with Flat Top - Right",
        "image":"1.8.png",
        "type":"solid"
    ],
    1.9:[
        "name":"Dirt - Center",
        "image":"1.9.png",
        "type":"solid"
    ],
    1.11:[
        "name":"Dirt - Bottom Center",
        "image":"1.11.png",
        "type":"solid"
    ],
    ...
    ]

我想读取数组如下;

let blockID: CGFloat = 0.0

let blockType = blockData[Float(blockID)]["type"]

谢谢。

Answer 1

问题似乎是你会从blockData[0.0]获得一个可选项您需要使用if let语句或强制解包来解包该可选项。

let blockData = [
    // ===== 0.0 - Air =====
    0.0:[
        "name":"Air",
        "image":"0.0.png",
        "type":"custom"
    ],
    0.1:[
        "name":"barrier",
        "image":"barrier",
        "type":"custom"
    ],
    // ===== 1.0 - Dirt =====
    1.0:[
        "name":"Dirt - Center",
        "image":"1.0.png",
        "type":"solid"
    ],
    1.1:[
        "name":"Dirt width Grass - Center",
        "image":"1.1.png",
        "type":"solid"
    ],
    1.2:[
        "name":"Dirt width Grass - Left",
        "image":"1.2.png",
        "type":"solid"
    ]
]

blockData[0.0]!["type"]

在swift 2.0中完美运行

如何在Swift中阅读这个多维数组？

1 个答案: