我有一个集合视图单元格，其中包含图像视图。我希望有一个场景，双击图像在完整图像视图上打开它，再次双击从该图像视图中删除该完整图像。
var a = ["1.png","2.png"]
override func viewDidLoad() {
super.viewDidLoad()
collectionView!.dataSource = self
collectionView!.delegate = self
collectionView!.registerClass(CollectionViewCell.self, forCellWithReuseIdentifier: "CollectionViewCell")
collectionView!.backgroundColor = UIColor.whiteColor()
self.view.addSubview(collectionView!)
var gestureRecognizer: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "tapImageView:")
self.imageview.addGestureRecognizer(gestureRecognizer)
gestureRecognizer.numberOfTapsRequired = 1
}
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
var cell = collectionView.cellForItemAtIndexPath(indexPath) as CollectionViewCell
if((cell.selected) && (indexPath.row%2 == 0))
{
// cell.imageView?.image = UIImage( named: a[indexPath.row])
cell.backgroundColor = UIColor.greenColor()
// imageview.image = UIImage( named: a[indexPath.row])
btn_close.hidden = false
let aSelector : Selector = "start:"
let tapGesture = UITapGestureRecognizer(target: self, action: aSelector)
let tap1 = UIGestureRecognizer(target: self, action: aSelector)
tapGesture.numberOfTapsRequired = 2
cell.addGestureRecognizer(tapGesture)
// var gestureRecognizer: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: "tapImageView:")
// self.imageview.addGestureRecognizer(gestureRecognizer)
// gestureRecognizer.numberOfTapsRequired = 2
}
else if((cell.selected) && (indexPath.row%2 != 0))
{
cell.backgroundColor = UIColor.redColor()
// imageview.image = UIImage( named: a[indexPath.row])
btn_close.hidden = false
}
}
func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
var abc : CGSize!
if(a.count == 1){
abc = CGSize(width: self.view.frame.width, height: self.view.frame.height/2)
}
else if(a.count == 2) {
abc = CGSize(width: self.view.frame.width/2, height: self.view.frame.height/2)
}
else if (a.count == 3) || (a.count==5){
abc = CGSize(width: self.view.frame.width/3, height: self.view.frame.height/2)
}
else if(a.count == 4) {
abc = CGSize(width: self.view.frame.width/2, height: self.view.frame.height/5)
}
else if (a.count>=5) && (a.count<9){
abc = CGSize(width: self.view.frame.width/3.05, height: self.view.frame.height/4.75)
}
else if (a.count>=9){
abc = CGSize(width: self.view.frame.width/3, height: self.view.frame.height/9)
}
return abc
}