Question

我想收到一些用户在Apple Watch上输入的文字。这就是我到目前为止所做的：

presentTextInputController(withSuggestions: ["Michael","David","John","Lisa","Mary","Susan","Matthew","James","Jessica","Jennifer","Amanda","Emily","Dylan","Ross","Rupert"], allowedInputMode:   WKTextInputMode.plain) { (arr: [Any]?) in
        playerNames.playerOne = String(describing: arr)
        print(playerNames.playerOne)

    }

这总是返回一个可选的Optional([Michael])

我希望它返回Michael

我已经四处查看过期权，但似乎无法找到一个人。

Answer 1

您可以尝试以下代码：

let suggestions = ["Michael", "David", "John", "Lisa", "Mary", "Susan", "Matthew", "James", "Jessica", "Jennifer", "Amanda", "Emily", "Dylan", "Ross", "Rupert"]

presentTextInputController(withSuggestions: suggestions, allowedInputMode: WKTextInputMode.plain) { (arr: [Any]?) in
    guard let arr = arr, let firstElement = arr.first as? String else { return }
    playerNames.playerOne = firstElement
    print(playerNames.playerOne)
}

以下是您可以参考的一些文件：Optional Binding，Guard Statement。

展开可选 - Apple Watch文本输入

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