在 IBAction 之前调用 PrepareforSegue

PrepareforSegue been called before IBAction

我正在尝试在变量中传递一个值,以便在我点击它时在自定义单元格中获取 UIButton 的索引路径,并使用 prepareForSegue 将此值传递给另一个视图控制器:

var row2 = Int() 

@IBAction func Teste(sender: AnyObject) {
    var btnPos: CGPoint = sender.convertPoint(CGPointZero, toView: self.tableView)
    var indexPath: NSIndexPath = self.tableView.indexPathForRowAtPoint(btnPos)!
    var row2 = Int(indexPath.row)
    self.performSegueWithIdentifier("commentsIdentifier", sender: self)     
}

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


    if (segue.identifier == "detailIdentifier") {
        let detailScene = segue.destinationViewController as DetailViewController
        // Pass the selected object to the destination view controller.
        if let indexPath = self.tableView.indexPathForSelectedRow() {
            let row = Int(indexPath.row)
            detailScene.currentObject = objects[row] as? PFObject

        }


    } else if (segue.identifier == "commentsIdentifier") {
        let commentScene = segue.destinationViewController as TesteButtonViewController
        println(row2)

    }

但是,当我在 prepareforsegue 中打印 row2 时,我看不到该值,我认为这是因为在 IBAction 之前调用了 prepareforSegue,请问我该如何解决这个问题?

你的IBActionprepareForSegue之前被调用了,你的错误是别的。
只需更改行:

var row2 = Int(indexPath.row)

row2 = Int(indexPath.row)

目前正在发生的事情是,您在 Teste 中创建了一个具有函数作用域的局部变量,它隐藏了与您的 class.

同名的变量