xcode - 禁用和启用 UIButton - XCode Swift

Question

我制作了一个生成随机数的应用程序，用户必须输入猜测并单击“GUESS”按钮才能提交。一切正常。但是，我只是尝试在启动新游戏时禁用 btnGuess 并启用 btnGuess 来启动应用程序。当用户赢得游戏时，该按钮也将被禁用。到目前为止，我已经在网上和这里搜索了如何禁用/启用 UIButton ，我找到的每个答案(最值得注意的是:button.enabled = false)似乎不起作用。请让我知道我在这里缺少什么。我也尝试过button.enabled = NO; (这是另一个提供的解决方案，但对我不起作用)。谢谢。

import UIKit

class myViewController: UIViewController {

var guesses : UInt = 0
var number : UInt32 = 0
var inputGuess = 0


@IBOutlet weak var lblGuesses: UILabel!

@IBOutlet weak var lblGuessTitle: UILabel!

@IBOutlet weak var lblOutput: UILabel!

@IBOutlet weak var txtInput: UITextField!

@IBAction func txtInput(sender: UITextField){

}

override func viewDidLoad() {
    super.viewDidLoad()

    txtInput.enabled = false
    // btnGuess.enabled = false    //doesnt work



    // Do any additional setup after loading the view.
}

func generateRandom() -> UInt32{
    return arc4random_uniform(100) + 1
}

func incrementGuesses(){
    ++guesses
    lblGuesses.text = String(guesses)
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

@IBAction func btnGuess(sender: UIButton) {

    let inputGuess = txtInput.text.toInt()

    if UInt32(inputGuess!) > number{
        lblOutput.text = "Too High!"
        incrementGuesses()
    }
    else if UInt32(inputGuess!) < number{
        lblOutput.text = "Too Low!"
        incrementGuesses()
    }else{
        lblOutput.text = "Correct Guess! You Win!"
        guesses = 0
        txtInput.text = ""
        txtInput.enabled = false
        //btnGuess.enabled = false  //doesnt work

    }
}


@IBAction func btnStart(sender: UIButton) {

    number = generateRandom()
    lblOutput.text = "I'm thinking of a number between 0 - 100"
    lblGuesses.text = "0"
    txtInput.enabled = true
    //btnGuess.enabled = true  //doesnt work
}

}

Answer 1

您引用的变量 (btnGuess) 在您的代码中声明为函数:

@IBAction func btnGuess(sender: UIButton) {

您可能需要将操作函数的名称更改为@IBAction func Guess(sender: UIButton)，然后声明一个@IBOutlet weak var btnGuess: UIButton! 属性。