I have a collectionView within a collectionView and I want to be able to select a cell in the 2nd collectionView to perform a segue to another ViewController.
Currently, when I select a cell, I get the following message: " Receiver ... has no segue with identifier 'ToVC2'. "
However, I have used this segue/identifier from other UIButtons and it works.
I have two ViewControllers: ViewController1 and ViewController2.
On ViewController1, there is a collectionView ("categoryCollectionView") which has vertical scrolling.
Within categoryCollectionView, there is another collectionView ("eventCollectionView") which allows horizontal scrolling.
The two collectionViews are set up and working correctly for numberOfItemsInSection and cellForItemAt. I now want to be able to select a cell within eventCollectionView, and cause a segue from ViewController1 to ViewController2.
I have added a function in ViewController1:
func segueToViewController2(event: Event){
performSegue(withIdentifier: "ToVC2", sender: event)
}
Within eventCollectionView's didSelectItemAt, I have tried the following:
var viewController1: ViewController1? = ViewController1()
viewController1.segueToViewController2(event: eventSelected)
When I select a cell, I get the following error message:
'Receiver () has no segue with identifier 'ToVC2''
However, this function performs the segue correctly if called from a regular UIButton on ViewController1 (therefore I know the issue is not that there is no segue / the identifier is wrong.) I believe the issue is that the function is being called from a collectionView within a collectionView.
Please help!!!!!
I believe the problem is that when you call var viewController1: ViewController1? = ViewController1(), you are initializing a new instance of ViewController1. This is probably not what you are meaning to do. Based on what you have said, you should pass a reference down the hierarchy of collection views you have created so that your didSelect can call the segue function on the original instance of ViewController1. Ideally, you would use a design pattern like delegation to do this.