swift 创建UICollectionView

//

//  CollectionViewController.swift

//  tab

//

//  Created by su on 15/12/8.

//  Copyright © 2015年 tian. All rights reserved.

//

import UIKit

class CollectionViewController: UIViewController, UICollectionViewDelegate, UICollectionViewDataSource {

var collectionView: UICollectionView!

override func viewDidLoad() {

super.viewDidLoad()

let flowLayout = UICollectionViewFlowLayout()

flowLayout.itemSize = CGSize(width: (Tools().SCREEN_WIDTH - 30) / 3, height: (Tools().SCREEN_WIDTH - 30) / 3)

collectionView = UICollectionView(frame: self.view.bounds, collectionViewLayout: flowLayout)

collectionView.backgroundColor = UIColor.whiteColor()

collectionView.registerNib(UINib(nibName: "CollectionViewCell", bundle: nil), forCellWithReuseIdentifier: "CollectionViewCell")

collectionView.delegate = self

collectionView.dataSource = self

self.view.addSubview(collectionView)

}

func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {

return 10

}

func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {

let cell = collectionView.dequeueReusableCellWithReuseIdentifier("CollectionViewCell", forIndexPath: indexPath)

return cell

}

override func didReceiveMemoryWarning() {

super.didReceiveMemoryWarning()

// Dispose of any resources that can be recreated.

}

/*

// 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.

}

*/

}