我使用Swift和Xcode 6.4,我想使用Segue将变量从一个View Controller传递给另一个 . 当您按下按钮时,变量持续时间应该为ViewController2提供值 . 在ViewController2中,我想再次使用此变量 .
Main.storyboard按钮标识符名为Test1
我怎样才能做到这一点?你能用我的代码帮我吗?怎么了?
谢谢
代码ViewController1:
导入UIKit
class ViewController1:UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
@IBAction func ButtonTapped(sender: AnyObject) {
var duration = 1.0
self.performSegueWithIdentifier("Test1", sender: duration)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
if (segue.identifier = "Test1") {
let secondViewController = segue.destinationViewController as ViewController2
let duration = sender as Double
secondViewController.duration = duration
}
}
}
代码ViewController2:
导入UIKit
class ViewController2:UIViewController {
var duration:Double?
var result = duration + 2.0
println(\(result))
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
1 回答