如何在Swift中的视图控制器之间传递数据？ [英] How do you pass data between view controllers in Swift?

问题描述

我尝试在加载视图时创建全局变量并更新信息但是没有呈现数据。

I tried creating global variables and updating the information when the view is loaded but data isn't being rendered.

GLOBAL VARIABLES

GLOBAL VARIABLES

var viewName:String = ""
var viewDuration:String = ""
var viewPeriod:String = ""
var viewMinAmp:String = ""
var viewMaxAmp:String = ""
var viewStep:String = ""
var viewType:String = ""

是否有更有效的方式传递除全局变量之外的信息？

Is there a more efficient way of passing information other than having global variables?

@IBOutlet var txtName: UITextField!
@IBOutlet var txtDuration: UITextField!
@IBOutlet var txtPeriod: UITextField!
@IBOutlet var txtMinAmp: UITextField!
@IBOutlet var txtMaxAmp: UITextField!
@IBOutlet var txtStep: UITextField!
@IBOutlet var txtType: UITextField!

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    setInfo(viewName, duration: viewDuration, period: viewPeriod, minAmp: viewMinAmp, maxAmp: viewMaxAmp, step: viewStep, type: viewType)
}

func setInfo(name: String, duration: String, period: String, minAmp: String, maxAmp: String, step: String, type: String) {
    txtName.text = name
    txtDuration.text = duration
    txtPeriod.text = period
    txtMinAmp.text = minAmp
    txtMaxAmp.text = maxAmp
    txtStep.text = step
    txtType.text = type
}

推荐答案

一种解决方案是覆盖prepareForSegue（segue：sender :)。视图控制器，包含您希望传递给目标视图控制器的数据。

One solution would be to override prepareForSegue(segue:sender:) from within the view controller which contains the data that you wish to pass to the destination view controller.

override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!) {
    if (segue.identifier == "YourSegueName") {
        //get a reference to the destination view controller
        let destinationVC:ViewControllerClass = segue.destinationViewController as! ViewControllerClass

        //set properties on the destination view controller
        destinationVC.name = viewName
        //etc...
    }
}

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