如何在Swift中将NSIndexPath转换为Int？

Question

I need the index of a cell of my UICollectionView . I know how get it, but the problem is when I convert this NSIndexpath to Int . This is my code.

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

    let cell = sender as! UICollectionViewCell
    let index = self.collectionView!.indexPathForCell(cell)!

    let vc : VideosViewController = segue.destinationViewController as! VideosViewController
    vc.id_category =  self.result_category[index.row as Int]["id"].intvalue
}

Answer 1

You don't need to convert the index.row to Int , it's a Int already, see the declaration of Apple:

var row: Int { get }

In the class NSIndexPath .

Just do vc.id_category = self.result_category[index.row]["id"].intvalue . Just be careful with the index of out bound in the array.

I hope this help you.