更改UITextView中的變量

Question

文本視圖中寫道：“您今天進行了0次冥想。” 我已經通過IBOutlet連接了它。

完成代碼后，是否可以僅遞增“ 0”並更新文本？

Answer 1

您應該使用一個變量來存儲數字：

var timesMeditated = 0 {
    didSet {
        yourTextView.text = "You have meditated \(timesMeditated) times today"
    }
}

請注意我是如何編寫didSet屬性觀察器的。 更改變量時將調用該方法，因此無論何時執行此操作：

timesMeditated += 1

您的文本視圖也會更新。

Answer 2

您可以再次用新文本設置整個文本

喜歡

yourTextView.text =  "You have meditated \(counter) times today."

counter是包含計數的變量

Answer 3

嘗試這個

self.textView.text = "You have meditated \(counter) times today."

Answer 4

最好的方法是在計數器didSet中更新textView ：

var mediatationOfDay = 0 {
    didSet {
        myTextView.text = "You have meditated \(mediatationOfDay) times today."
    }
}

有可能回答您的第一個問題，但我不建議您這樣做：

var mediatationOfDay = 0
var textValue = "You have meditated 0 times today."

private func incrementMedidationOfTheDay() {
    let oldvalue = mediatationOfDay
    mediatationOfDay += 1
    textValue = textValue.replacingOccurrences(of: oldvalue.description, with: mediatationOfDay.description)
}

也可能：

private func incrementMedidationOfTheDay() {
    mediatationOfDay += 1
    myTextView.text = "You have meditated \(mediatationOfDay) times today."
}

Answer 5

您可以通過編程設置

@IBOutlet weak var yourTxtView: UITextView!
yourTxtView.text = "You have meditated \(count) times today."