I'm using MVCarouselCollectionView but when I convert it to Swift3 gives me ;
Argument labels '(_:, didScrollToCellAtIndex:)' do not match any available overloads
Error Lines;
public func collectionView(_ collectionView : UICollectionView, didSelectItemAt indexPath: IndexPath) {
// THIS LINE self.selectDelegate?.carousel(self, didSelectCellAtIndexPath: indexPath)
}
public func updatePageIndex() {
let pageIndex = self.getPageNumber()
if currentPageIndex != pageIndex {
// println("old page: \(currentPageIndex), new page: \(pageIndex)")
currentPageIndex = pageIndex
// THIS LINE self.selectDelegate?.carousel(self, didScrollToCellAtIndex: pageIndex)
}
}
public func setCurrentPageIndex(pageIndex: Int, animated: Bool) {
self.currentPageIndex = pageIndex
self.clientDidRequestScroll = true;
// THIS LINE let indexPath = NSIndexPath(forRow: currentPageIndex, inSection: 0)
self.scrollToItemAtIndexPath(indexPath, atScrollPosition:UICollectionViewScrollPosition.CenteredHorizontally, animated: animated)
}
The code is here:
// MVCarouselCollectionView.swift
//
// Copyright (c) 2015 Andrea Bizzotto (bizz84@gmail.com)
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
import UIKit
import Foundation
/*
* TODO: Would be nice to support spacing between pages. The link below explains how to do this but
* the code sample needs to be converted to Auto Layout
* http://stackoverflow.com/questions/13228600/uicollectionview-align-logic-missing-in-horizontal-paging-scrollview
*/
@objc public protocol MVCarouselCollectionViewDelegate {
// method to provide a custom loader for a cell
@objc optional func imageLoaderForCell(atIndexPath indexPath: NSIndexPath, imagePath: String) -> MVImageLoaderClosure
func carousel(carousel: MVCarouselCollectionView, didSelectCellAtIndexPath indexPath: NSIndexPath)
func carousel(carousel: MVCarouselCollectionView, didScrollToCellAtIndex cellIndex : NSInteger)
}
public class MVCarouselCollectionView: UICollectionView, UICollectionViewDataSource, UICollectionViewDelegateFlowLayout {
private let reuseID = "SomeReuseID"
// MARK: Variables
public var imagePaths : [String] = []
public var selectDelegate : MVCarouselCollectionViewDelegate?
public var currentPageIndex : Int = 0
public var maximumZoom : Double = 0.0
// Default clousure used to load images
public var commonImageLoader: MVImageLoaderClosure?
// Trick to avoid updating the page index more than necessary
private var clientDidRequestScroll : Bool = false
// MARK: Initialisation
override public func awakeFromNib() {
super.awakeFromNib()
self.delegate = self
self.dataSource = self
// Loading bundle from class, see: http://stackoverflow.com/questions/25138989/uicollectionview-nib-from-a-framework-target-registered-as-a-cell-fails-at-runt
let bundle = Bundle(for: MVCarouselCell.self)
let nib = UINib(nibName : "MVCarouselCell", bundle: bundle)
self.register(nib, forCellWithReuseIdentifier: self.reuseID)
}
// MARK: UICollectionViewDataSource
public func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.imagePaths.count
}
public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
// Should be set at this point
assert(commonImageLoader != nil)
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: self.reuseID, for: indexPath) as! MVCarouselCell
cell.cellSize = self.bounds.size
// Pass the closure to the cell
let imagePath = self.imagePaths[indexPath.row]
let loader = self.selectDelegate?.imageLoaderForCell?(atIndexPath: indexPath as NSIndexPath, imagePath: imagePath)
cell.imageLoader = loader != nil ? loader : self.commonImageLoader
// Set image path, which will call closure
cell.imagePath = imagePath
cell.maximumZoom = maximumZoom
// http://stackoverflow.com/questions/16960556/how-to-zoom-a-uiscrollview-inside-of-a-uicollectionviewcell
if let gestureRecognizer = cell.scrollView.pinchGestureRecognizer {
self.addGestureRecognizer(gestureRecognizer)
}
if let gestureRecognizer = cell.scrollView?.panGestureRecognizer {
self.addGestureRecognizer(gestureRecognizer)
}
return cell
}
public func collectionView(_ collectionView : UICollectionView, didEndDisplaying cell: UICollectionViewCell, forItemAt indexPath: IndexPath) {
if let cell = cell as? MVCarouselCell {
// http://stackoverflow.com/questions/16960556/how-to-zoom-a-uiscrollview-inside-of-a-uicollectionviewcell
if let gestureRecognizer = cell.scrollView?.pinchGestureRecognizer {
self.removeGestureRecognizer(gestureRecognizer)
}
if let gestureRecognizer = cell.scrollView?.panGestureRecognizer {
self.removeGestureRecognizer(gestureRecognizer)
}
}
}
// MARK: UICollectionViewDelegateFlowLayout
public func collectionView(_ collectionView : UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
return self.superview!.bounds.size
}
public func collectionView(_ collectionView : UICollectionView, didSelectItemAt indexPath: IndexPath) {
self.selectDelegate?.carousel(self, didSelectCellAtIndexPath: indexPath)
}
// MARK: UIScrollViewDelegate
public func scrollViewDidScroll(_ scrollView: UIScrollView) {
if scrollView == self {
if !self.clientDidRequestScroll {
self.updatePageIndex()
}
}
}
public func scrollViewDidEndDecelerating(_ scrollView: UIScrollView) {
if scrollView == self {
self.clientDidRequestScroll = false
self.updatePageIndex()
}
}
public func scrollViewDidEndScrollingAnimation(_ scrollView: UIScrollView) {
if scrollView == self {
self.clientDidRequestScroll = false
self.updatePageIndex()
}
}
public func updatePageIndex() {
let pageIndex = self.getPageNumber()
if currentPageIndex != pageIndex {
// println("old page: \(currentPageIndex), new page: \(pageIndex)")
currentPageIndex = pageIndex
self.selectDelegate?.carousel(self, didScrollToCellAtIndex: pageIndex)
}
}
public func getPageNumber() -> NSInteger {
// http://stackoverflow.com/questions/4132993/getting-the-current-page
let width : CGFloat = self.frame.size.width
var page : NSInteger = NSInteger((self.contentOffset.x + (CGFloat(0.5) * width)) / width)
let numPages = self.numberOfItems(inSection: 0)
if page < 0 {
page = 0
}
else if page >= numPages {
page = numPages - 1
}
return page
}
public func setCurrentPageIndex(pageIndex: Int, animated: Bool) {
self.currentPageIndex = pageIndex
self.clientDidRequestScroll = true;
let indexPath = NSIndexPath(forRow: currentPageIndex, inSection: 0)
self.scrollToItemAtIndexPath(indexPath, atScrollPosition:UICollectionViewScrollPosition.CenteredHorizontally, animated: animated)
}
public func resetZoom() {
for cell in self.visibleCells as! [MVCarouselCell] {
cell.resetZoom()
}
}
}
Also you can see this project on Github:
