Hi!
I'm very very new to coding and especially swift. followed your tutorial and am getting this error at the ViewController extension.
I made things a little different than your code, I am using a TableViewController as the starting point. This is the complete code for the subclass.
import UIKit
public let model: [[UIColor]] = generateRandomData()
class TableViewController: UITableViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 0
}
// next two functions are to display table view cells
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// ajustado
return model.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath)
return cell
}
// [kk2] set the collectionView delegate/datasource and row number one function to be called just before the cell is about to be displayed
override func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
guard let tableViewCell = cell as? TableViewCell else { return }
tableViewCell.setCollectionViewDataSourceDelegate(self, forRow: indexPath.row)
tableViewCell.collectionViewOffset = storedOffsets[indexPath.row] ?? 0
}
override func tableView(tableView: UITableView, didEndDisplayingCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
guard let tableViewCell = cell as? TableViewCell else { return }
storedOffsets[indexPath.row] = tableViewCell.collectionViewOffset
}
/*
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("reuseIdentifier", forIndexPath: indexPath)
// Configure the cell...
return cell
}
*/
/*
// Override to support conditional editing of the table view.
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// Return false if you do not want the specified item to be editable.
return true
}
*/
/*
// Override to support editing the table view.
override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if editingStyle == .Delete {
// Delete the row from the data source
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)
} else if editingStyle == .Insert {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view
}
}
*/
/*
// Override to support rearranging the table view.
override func tableView(tableView: UITableView, moveRowAtIndexPath fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {
}
*/
/*
// Override to support conditional rearranging of the table view.
override func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// Return false if you do not want the item to be re-orderable.
return true
}
*/
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
// Get the new view controller using segue.destinationViewController.
// Pass the selected object to the new view controller.
}
*/
}
extension ViewController: UICollectionViewDelegate, UICollectionViewDataSource {
func collectionView(collectionView: UICollectionView, numberOfRowsInSection section: Int) -> Int {
return model[collectionView.tag].count
}
func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCellWithReuseIdentifier("Cell", forIndexPath: indexPath)
cell.backgroundColor = model[collectionView.tag] [indexPath.item]
return cell
}
}
func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
print("Collection view at row \(collectionView.tag) selected index path \(indexPath)")
}
It shows another two errors up there, which are
Cannot invoke 'setCollectionViewDataSourceDelegate' with an argument list of type '(TableViewController, forRow: Int)'
and
Use of unresolved identifier 'storedOffsets'
both at one of the same override tableView function.
Any idea of what might be causing the problem?