Swift 订阅上下文时强制转换为数组或字典类型：Any

我已经意识到，我在下标

context:Any

时得到的数据具有Any类型。我试图确保数据支持订阅，例如数组或字典

我曾尝试转换数组和字典类型，但没有成功，并且阅读了许多与订阅和转换相关的问题，但没有一个说明订阅的用法

context:Any

。我需要做什么

public var recieverNumber = ""
public var recieverName = ""

class Messenger: WKInterfaceController, WCSessionDelegate {

@IBAction func send() {
    let newNumber = recieverNumber.components(separatedBy: CharacterSet.decimalDigits.inverted).joined(separator: "")
    let escapedString = message.addingPercentEncoding(withAllowedCharacters: .urlHostAllowed)!
    WKExtension.shared().openSystemURL(URL(string: "sms:&recipients=\(newNumber)&body=\(escapedString)")!)

    recieverNumber = ""
    recieverName = ""
    // ...code...
    dismiss()
}

@IBAction func contacts() {
    recieverNumber = ""
    recieverName = ""
    // ...code...
    dismiss()
}

// ...code...

override func awake(withContext context: Any?) {
    super.awake(withContext: context)
    // ...code...
    recieverName = context![0] as! String // error
    recieverNumber = context![1] as! String // error
}

---

最安全的方法是将

Any？

条件向下转换为预期的类型（字符串

数组）

override func awake(withContext context: Any?) {
    super.awake(withContext: context)
    guard let receiver = context as? [String], receiver.count > 1 else { return }
    recieverName = receiver[0]
    recieverNumber = receiver[1]
}