xcode Swift 中的 If else 语句
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If else Statement in Swift
提问by Coder
I'm a newbie at swift, so how do I add an extra else if statement saying greater than 56 & less than 65 to my button?
我是 swift 的新手，那么我如何向我的按钮添加一个额外的 else if 语句，表示大于 56 且小于 65？
The button work fine, it just need one more additional statement added to finished up my coding.
该按钮工作正常，它只需要添加一个额外的语句来完成我的编码。
@IBAction func Submit4Button(sender: AnyObject) {
let a: Float? = (EnterH4Dimension.text as NSString).floatValue
if a > 65 {
self.DimensionLabel.text = " Cameron H4 With Guide Pins."
yesButton.hidden = false
noButton.hidden = false
emailButton.hidden = true
DimensionLabel.hidden = false
self.view.endEditing(true)
}
else if EnterH4Dimension.text == "" {
noButton.hidden = true
yesButton.hidden = true
var alert = UIAlertController(title: "Dimension", message: "Missing Data Input.", preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
self.presentViewController(alert, animated: true, completion: nil)
}
else {
self.DimensionLabel.text = "Dimensions meet guideline"
noButton.hidden = true
yesButton.hidden = true
DimensionLabel.hidden = false
shallowDimButton.hidden = true
emailButton.hidden = false
self.view.endEditing(true)
}
}
回答by Jér?me
If you are referring to a:
如果您指的是a：
You can try the following:
您可以尝试以下操作：
else if a > 56 && a < 65 {}
Depending on whether or not you want to include 56 and 65 you can use <=& >=
根据您是否要包括 56 和 65，您可以使用<=&>=
Note that all your else ifstatements should be place before the final elsestatement
请注意，您的所有else if陈述都应放在最终else陈述之前
