Cell 里面的 Button 获取不到

[头发还没秃a]

如图：我在添加了两个Cell，每个Cell里面有一个 Button, 两个 Button 的 Tag都设置为1，但是在代码里面

let cityLocationButton = collectionCell!.viewWithTag(1) as! UIButton

获取 Button 的时候，第二个 Cell 的 Button 获取不到，就算把第二个 Button 的 Tag 设置为2也获取不到，请问是怎么回事呢？下面贴上我的代码：

    var collectionCell: UICollectionViewCell?
    var cellID: String?
    func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell{
        if indexPath.row > 0{
            cellID = "collectionCellCityName"
        }else{
            cellID = "collectionCellLocation"
        }
        collectionCell = collectionView.dequeueReusableCellWithReuseIdentifier(cellID!, forIndexPath: indexPath) as UICollectionViewCell
        let cityLocationButton = collectionCell!.viewWithTag(1) as! UIButton
        if indexPath.row > 0{
            cityLocationButton.setBackgroundImage(UIImage(named: "citylocation_city"), forState: UIControlState.Normal)
            cityLocationButton.setTitle(cities[indexPath.row-1], forState: UIControlState.Normal)
        }
        cityLocationButton.tag = indexPath.row
        //添加点击事件
        cityLocationButton.addTarget(self, action: "clickForCityName:", forControlEvents: UIControlEvents.TouchUpInside)
        
        return collectionCell!
    }

[头发还没秃a]

找到问题了，是因为我的第二个 Cell 的 Button继承了我重写的一个类：

import UIKit

class CollectionItemClickEffect : UIButton {
    
    override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
        setBackgroundImage(UIImage(named: "citylocation_city_touchdown"), forState: UIControlState.Normal)
    }
    
    override func touchesCancelled(touches: Set<UITouch>?, withEvent event: UIEvent?) {
        UIButton.animateWithDuration(0.15, animations: { () -> Void in
            self.setBackgroundImage(UIImage(named: "citylocation_city"), forState: UIControlState.Normal)
        })
    }
    
    override func touchesEnded(touches: Set<UITouch>, withEvent event: UIEvent?) {
        UIButton.animateWithDuration(0.15, animations: { () -> Void in
            self.setBackgroundImage(UIImage(named: "citylocation_city"), forState: UIControlState.Normal)
        })
    }
}

这个类只定义了 Button的点击效果，为什么会连点击事件都失去了呢？有哪位大大知道问题出在哪么？

[头发还没秃a]

没人知道这个问题怎么解决么？

[头发还没秃a]

好吧，我自己解决了