arrays - swift 2 : cannot cast value of type NSArray toNSString Dictionary?

Question

我正在制作一个简单的应用程序来支持自闭症 child 的 parent 促进沟通。这应该很容易，因为我有一组之前项目的代码，但我坚持的是字典中的一组图像文件。我还是个新手，经过搜索后，但我认为有效的方法都不起作用。为什么？我需要做什么？ (我什至放弃了数组，改成了字典，但还是有问题!)

import Foundation
import UIKit

struct WordList {

var placeCue: String?
var choiceImage: [UIImage] = []
var audio: [String] = []

init(index: Int){
let wordlistLibrary = WordlistLibrary().wordlists
let wordlistEntry = wordlistLibrary[index]

let iconName = wordlistEntry["choiceImage"]! as! String // When I run, this is the place to stuck. :(
choiceImage += [UIImage(named: iconName)!]

//choiceImage += wordlistEntry["choiceImage"] as! [UIImage]
placeCue = wordlistEntry["placeCue"] as! String!
audio += wordlistEntry["audio"] as! [String]
}
}

<小时/>

下面是我的字典的一部分。

struct WordlistLibrary {

var  wordlists: [[String: AnyObject]] = [

[
"placeCue": "Audio0",   // toothache
"choiceImage": ["WaterBottle.pdf", "Medicine.pdf", "Dentist.pdf", "SomethingElse.pdf"],
"audio": ["Audio16", "Audio17", "Audio14", "Audio21"]
],

[
"placeCue": "Audio1",   // ear
"choiceImage": ["WaterBottle.pdf", "Medicine.pdf", "Nap.pdf", "SomethingElse.pdf"],
"audio": ["Audio16", "Audio17", "Audio18", "Audio21"]
]
]
}

Answer 1

您的choiceImage是[String]。它不是字符串

所以将其更改为

let iconName = wordlistEntry["choiceImage"]! as! [String]
choiceImage = iconName.map{ UIImage(named: $0)! }