ios 如何将 Int 显示到屏幕/标签 SWIFT
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/25926305/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to display Int to screen/label SWIFT
提问by Changerrs
I am not sure how to display an int to the screen?
我不确定如何在屏幕上显示 int ？
this is what i've tried:
这是我试过的：
@IBOutlet weak var Button: UIButton!
@IBOutlet weak var someLabel: UILabel!
var someVar = 0
@IBAction func buttonPressed(sender: AnyObject) {
someVar = someVar + 1
someLabel.text = (String)someVar
}
I have linked up the button and label to the view controller.
我已将按钮和标签链接到视图控制器。
Thanks, sorry for the noob question.
谢谢，抱歉菜鸟问题。
回答by Mick MacCallum
This is not a valid type cast in Swift.
这在 Swift 中不是有效的类型转换。
(String)someVar
If String was a valid subtype of Int, you could downcast with the "as" operator, but it isn't.
如果 String 是 Int 的有效子类型，则可以使用“as”运算符进行向下转换，但事实并非如此。
In this case, you want to initialize a new String passing the Int as an argument.
在这种情况下，您想要初始化一个新的 String，将 Int 作为参数传递。
someLabel.text = String(someVar)
回答by William Falcon
Try using the following,
尝试使用以下方法，
someLabel.text = "\(someVar)"
回答by Mrigraj
you can do something like this:
你可以做这样的事情：
someLabel.text = NSString(format:"%d", someVar)
回答by Tirth
Try this
尝试这个
someLabel.text = "\(someVar)"
Yeah
是的
someLabel.text = String(someVar)
Go through this doc https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/GuidedTour.html
