CollectionView not Responding to Tapped Index List Item #35
Description
I'm trying to use your framework to be able to get an index list for my collection view.
Before actually doing this inside of my project I figured it would be useful to make a test project to test the working and functionality of it first.
this is my entire controller. I'm using swift 3
do you have any idea why it might not be working? is there something I'm doing wrong?
Basically indexViewValueChanged is never called
import UIKit
import BDKCollectionIndexView
class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
@IBOutlet weak var collectionView: UICollectionView!
@IBOutlet weak var indexView: BDKCollectionIndexView!
let reuseIdentifier = "cell" // also enter this string as the cell identifier in the storyboard
var items = ["1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21", "22", "23", "24", "25", "26", "27", "28", "29", "30", "31", "32", "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43", "44", "45", "46", "47", "48"]
override func viewDidLoad() {
super.viewDidLoad()
let indexWidth: CGFloat = 28
let frame = CGRect(x: (collectionView.frame.size.width - indexWidth),
y: collectionView.frame.size.height,
width: indexWidth,
height: collectionView.frame.size.height)
let indexView = BDKCollectionIndexView.init(frame: frame, indexTitles: nil)
indexView?.autoresizingMask = [.flexibleHeight, .flexibleLeftMargin]
indexView?.addTarget(self, action: Selector("indexViewValueChanged:"), for: .valueChanged)
view.addSubview(indexView!)
self.indexView.indexTitles = items
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.items.count
}
// make a cell for each cell index path
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
// get a reference to our storyboard cell
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath as IndexPath) as! MyCollectionViewCell
// Use the outlet in our custom class to get a reference to the UILabel in the cell
cell.myLabel.text = self.items[indexPath.item]
cell.backgroundColor = UIColor.cyan // make cell more visible in our example project
return cell
}
// MARK: - UICollectionViewDelegate protocol
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
// handle tap events
print("You selected cell #\(indexPath.item)!")
}
func indexViewValueChanged() {
let path = "hello"
print(path)
}
func indexViewValueChanged(sender: BDKCollectionIndexView) {
let path = IndexPath(item: 0, section: Int(sender.currentIndex))
collectionView.scrollToItem(at: path, at: .top, animated: false)
// If you're using a collection view, bump the y-offset by a certain number of points
// because it won't otherwise account for any section headers you may have.
collectionView.contentOffset = CGPoint(x: collectionView.contentOffset.x,
y: collectionView.contentOffset.y - 45.0)
}
}