According to Apple :
When a popover is active, interactions with other views are normally disabled until the popover is dismissed. Assigning an array of views to this property allows taps outside of the popover to be handled by the corresponding views.
Then you can use the passthroughViews in the following way :
CollectionViewController
import UIKit
let reuseIdentifier = "Cell"
class CollectionViewController: UICollectionViewController {
var popoverViewController : PopoverViewController?
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
override func numberOfSectionsInCollectionView(collectionView: UICollectionView) -> Int {
//#warning Incomplete method implementation -- Return the number of sections
return 1
}
override func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
//#warning Incomplete method implementation -- Return the number of items in the section
return 15
}
override func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier(reuseIdentifier, forIndexPath: indexPath) as! CollectionViewCell
cell.labelInfo.text = "Cell \(indexPath.row)"
return cell
}
override func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
println("tapped")
if let popover = self.popoverViewController {
var cell = self.collectionView!.cellForItemAtIndexPath(indexPath) as! CollectionViewCell
popover.labelPop.text = cell.labelInfo.text
}
else {
self.popoverViewController = self.storyboard?.instantiateViewControllerWithIdentifier("PopoverViewController") as? PopoverViewController
var cell = self.collectionView!.cellForItemAtIndexPath(indexPath) as! CollectionViewCell
var t = self.popoverViewController!.view
self.popoverViewController!.labelPop.text = cell.labelInfo.text
self.popoverViewController!.modalPresentationStyle = .Popover
var popover = self.popoverViewController!.popoverPresentationController
popover?.passthroughViews = [self.view]
popover?.sourceRect = CGRect(x: 250, y: 500, width: 0, height: 0)
self.popoverViewController!.preferredContentSize = CGSizeMake(250, 419)
popover!.sourceView = self.view
self.presentViewController(self.popoverViewController!, animated: true, completion: nil)
}
}
}
The above code is the CollectionViewController to handle the UICollectionViewController and all its delegates.
CollectionViewCell
class CollectionViewCell: UICollectionViewCell {
@IBOutlet weak var labelInfo: UILabel!
}
The custom cell with just a UILabel inside.
PopoverViewController
class PopoverViewController: UIViewController {
@IBOutlet var labelPop: UILabel!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
And finally the PopoverViewController to show in form of .Popover.
There are some observations in answer I would like to point out :
I set a reference to the class PopoverViewController to keep it through the life cycle and pass it data when it remains open yet.
The line var t = self.popoverViewController!.view it's necessary because if not the @IBOutlet inside the PopoverViewController was not init until it's presented, there could be other ways to do it.
I present the popover in the middle of the screen to handle the tap in several cell and test it the scroll too, you can display it in any position you want.
In the views to allow when the popover is opened , I set the self.view, but in this way you need to dismiss it for you own, because it never is dismissed when you make taps in the view, you can put any view you want instead.
Any trouble you have with the solution I can share it the project on Github.
I hope this help you
