Question

我正在使用此代码转到下一个屏幕

var nextVC = self.storyboard?.instantiateViewControllerWithIdentifier("MainVC") as ViewController
            self.navigationController?.pushViewController(nextVC, animated: true)<br>

现在我想将布尔值传递到下一个屏幕我该如何通过？

Answer 1

只需设置变量？您已经拥有viewController实例。

var nextVC = self.storyboard?.instantiateViewControllerWithIdentifier("MainVC") as ViewController

nextVC.myFancyBoolVariable = true

self.navigationController?.pushViewController(nextVC, animated: true)

Answer 2

查看prepareForSegue(_:sender:)记录的here。

Answer 3

将数据从ViewController1发送到ViewController2：

ViewController1：

// define var    
var myboolvar: Bool = true
var anyOtherVar: String = "test"

// prepare
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {

        if (segue.identifier == "editCardSet"){ // name your segue in storyboard
            var upcoming: ViewController2 = segue.destinationViewController as ViewController2 // set the target ViewController


            // transport any data, as many as you need
            // make sure these vars are set in the seocnd ViewController, otherwise you will get an error here
            upcoming.receiveMyBool = self.myboolvar
            upcoming.receiveMyVar = self.anyOtherVar


        }

    }

在ViewController2中：

class ViewController2: UITableViewController {

// define the vars you are sending from the previous controller
var receiveMyBool: Bool!
var receiveMyVar: String!

将数据传递给下一个ViewController

3 个答案: