Ios &引用；func Prepareforsgue“；不调用CollectionView

是否可以使用

shouldPerformSegueWithIdentifier

通过以下方法捕捉segue的移动：

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

override func shouldPerformSegueWithIdentifier(identifier: String, sender: AnyObject?) -> Bool

以下是我的视图控制器代码：

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
    let poke:Pokemon!

    if inSearchMode {
        poke=filterPokemons[indexPath.row]
    } else {
        poke=pokemonlist[indexPath.row]
    }
    shouldPerformSegueWithIdentifier("PokemonDetailVC", sender: poke);
}

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
    if segue.identifier == "PokemonDetailVC" {
        if let detailVC = segue.destinationViewController as? PokemonDetailVC{
            if let poke = sender as? Pokemon {
                detailVC.pokemon=poke;
            }
        }
    }
}

故事板序列参考

试试：

performSegueWithIdentifier("Identifier", sender: self)

而不是：

shouldPerformSegueWithIdentifier("Identifier", sender: self)

当我们使用shouldPerformSegueWithIdentifier时，我们可以通过以下方法捕捉segue的移动：

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

override func shouldPerformSegueWithIdentifier(identifier: String, sender: AnyObject?) -> Bool

---

检查此链接：

您需要调用

performSegueWithIdentifier

而不是

shouldPerformSegueWithIdentifier

，因为

shouldPerformSegueWithIdentifier

方法为您提供了阻止segue发生的机会。从该方法返回NO会导致segue无法执行

如果您想了解有关

shouldPerformSegueWithIdentifier

的更多详细信息，请选中此项

其中as

performsguewithidentifier

方法允许将数据从源视图控制器传递到目标视图控制器

因此，现在只需像这样调用

performsguewithidentifier

，而不是

shouldPerformSegueWithIdentifier

performSegueWithIdentifier("PokemonDetailVC", sender: poke)

在Swift 3.0中

self.performSegue(withIdentifier: "PokemonDetailVC", sender: poke)

---

没有

sender

是可以的，只需将方法更改为

performsguewithidentifier。