ios 8.1: Type 'ViewController' does not conform to protocol 'UICollectionViewDataSource'

Question

I'm getting the following error when compile swift application (iOS 8.1)

Type 'ViewController' does not conform to protocol 'UICollectionViewDataSource'

at "class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate" line

I've just checked few posts here but no one helps me to solve this problem.

Here's the code of ViewController.swift file:

import UIKit

class ViewController: UIViewController, UICollectionViewDataSource, UICollectionViewDelegate {
var tableDescription: [String] = []
var tableNumbers: [String] = []

override func viewDidLoad() {
    super.viewDidLoad()
    self.populateView()
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

func collectionView(collectionView: UICollectionView, numberOfItemInSection section: Int) -> Int{
    return tableDescription.count
}

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell{
    let cell: CollViewCell = collectionView.dequeueReusableCellWithReuseIdentifier("Cell", forIndexPath: indexPath) as CollViewCell
    
    cell.lblDescription.text = tableDescription[indexPath.row]
    cell.lblNumber.text = tableNumbers[indexPath.row]
    
    return cell
}

func collectionView(collectionView: UICollectionView, didSelectItemAtIndexPath indexPath: NSIndexPath) {
    println("Cell \(indexPath.row) selected")
}
 }

Answer 1

检查代码中的拼写错误，例如 - 使用“numberOfItemsInSection”而不是 numberOfItemInSection。