//1 viewDidLoad 里面
overridefunc viewDidLoad() {
super.viewDidLoad()
self.view.backgroundColor =UIColor.whiteColor()
let flowLayout =UICollectionViewFlowLayout()//瀑布流
//布局collection
var collection = UICollectionView(frame:CGRectMake(0,0,self.view.frame.size.width,self.view.frame.size.height),collectionViewLayout: flowLayout)
collection.backgroundColor =UIColor.yellowColor()
//flowLayout.minimumLinespacing = 10.0;//行间距(最小值)
//flowLayout.minimumInteritemSpacing = 50.0;//item间距(最小值)
collection.delegate =self
collection.dataSource =self
collection.registerClass(SCollectionViewCell.self,forCellWithReuseIdentifier:"cell")
//这个是关键要注册cell
self.view.addSubview(collection)
// Do any additional setup after loading the view.
}
//2 实现代理方法
func collectionView(collectionView:UICollectionView,cellForItemAtIndexPath indexPath:NSIndexPath) -> UICollectionViewCell {
var cell:UICollectionViewCell = collectionView.dequeueReusableCellWithReuseIdentifier("cell",forIndexPath: indexPath)
as!UICollectionViewCell
cell.backgroundColor =UIColor.redColor()
return cell
}
func collectionView(collectionView: UICollectionView,numberOfItemsInSection section: Int) -> Int {
return 20 //返回cell的个数
}
func numberOfSectionsInCollectionView(collectionView:UICollectionView) -> Int{
return 1 //区间
}
//layout的布局
func collectionView(collectionView: UICollectionView,layout collectionViewLayout: UICollectionViewLayout,sizeforItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
if (indexPath.row %2 != 0 && indexPath.row %3 != 0) {
return CGSizeMake(140,70);//长的
}else{
return CGSizeMake(70,0)">方的
}
}
//两个cell的间隔
func collectionView(collectionView: UICollectionView,insetForSectionAtIndex section: Int) -> UIEdgeInsets {
return UIEdgeInsetsMake(5,5,5)
}
//选中cell
func collectionView(collectionView: UICollectionView,didSelectItemAtIndexPath indexPath: NSIndexPath) {
print(indexPath.row)
}
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