求助：使用SwiftyJSON将JSON转换为字符串数组问题

Hey there! I see you're having trouble converting a SwiftyJSON object to a Swift [String] array for your radioTableView.items — let's get this sorted out quickly.

The Fix #

Your answers variable is a SwiftyJSON JSON type, and since your print output confirms it's an array of strings, you can easily convert it to a native Swift string array using SwiftyJSON's built-in properties. Here's how to update your code:

var answers = JSON() { 
    didSet { 
        print(answers) 
        // Convert SwiftyJSON array to [String]
        let stringArray = answers.arrayValue.compactMap { $0.stringValue }
        radioTableView.items = stringArray
        radioTableView.reloadData() 
    } 
}

Why This Works #

Let's break down the key parts:

• arrayValue: This safely extracts the underlying array from the SwiftyJSON object. If the JSON isn't an array (for some edge case), it returns an empty array instead of crashing your app.
• compactMap { $0.stringValue }: This loops through each element in the JSON array, converts it to a Swift String using stringValue, and filters out any elements that can't be converted to a string (though your print output suggests this won't be an issue here). If you're 100% sure every element is a string, you could use map instead, but compactMap adds a nice safety layer.

Quick Check #

After making this change, your radioTableView.items will be populated with the exact string array you need (["ans1", "ans2", "ans3"]), just like your commented-out example.

内容的提问来源于stack exchange，提问作者noxo.