Swift - 如何乘以 UITextField 的值 [英] Swift - How to multiply value from UITextField
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问题描述
@IBOutlet weak var labelLabel: UILabel
@IBOutlet weak var textFieldField: UITextField
@IBAction func buttonButton(sender: AnyObject) {
var conversionRate = 7
self.labelLabel.text = self.textFieldField.text // Here I'm trying to multiply textFieldField by 7 (conversionRate)
textFieldField.resignFirstResponder()
}
您好，我想将 UITextField 中的值乘以 7.有人可以帮助我吗?我什么都试过了..toInt(), intValue() 什么都没有
Hello, I want to multiply a value from UITextField by 7. Can someone help me? I've tried everything. .toInt(), intValue() and nothing
推荐答案
It should work with .toInt():
It should work with .toInt():
if let number = self.textFieldField.text?.toInt() {
self.labelLabel.text = "\(number * conversionRate)"
}
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