我有这个代码的问题:
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
self.performSegueWithIdentifier("showDetailsSegue", sender: self)
}
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
if segue.identifier == "showDetailsSegue" {
let detailsVC: DetailsViewController = segue.destinationViewController as! DetailsViewController
let indexPaths = self.collectionView.indexPathsForSelectedItems()
let indexPath = indexPaths[0] as! NSIndexPath
var thisCoupon = self.userCoupons[indexPath.row] as UserCoupons
detailsVC.userCoupon = self.userCoupons[indexPath.row]
detailsVC.pinArray = self.pinArray
detailsVC.userStamp = self.userStamps[indexPath.row]
}
}
当我在集合视图中只有一个项目时,我无法访问DetailsViewController.当我的物品很少时,我的segue可以处理没有最后一项的物品.
func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.userCoupons.count
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell { …