-2
Delegate and datasource are also set UICollectionViewControllerをサブクラス化しましたが、UICollectionViewのすべてのデータソースメソッドが呼び出されていますが、UICollectionViewDelegateメソッドが呼び出されません。理由は何か。 ？以下は、UICollectionViewControllerサブクラスの実装です。UICollectionViewDelegateメソッドがUICollectionViewControllerサブクラスで呼び出されていない
class CollectionCollectionViewController: UICollectionViewController {
let carImages = ["mini_small","rover_small","smart_small","highlander_small","venza_small","volvo_small","vw_small","nissan_small","honda_small","jeep_small"]
override func viewDidLoad() {
super.viewDidLoad()
self.collectionView!.register(UICollectionViewCell.self, forCellWithReuseIdentifier: reuseIdentifier)
}
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 prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
// MARK: UICollectionViewDataSource
override func numberOfSections(in collectionView: UICollectionView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of items
return carImages.count
}
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "MyCell", for: indexPath) as! MyCollectionViewCell
let path = Bundle.main.url(forResource: carImages[indexPath.row], withExtension: "jpg")
let data = try! Data(contentsOf: path!)
cell.imgView.image = UIImage(data: data)
return cell
}
// MARK: UICollectionViewDelegate
// Uncomment this method to specify if the specified item should be highlighted during tracking
override func collectionView(_ collectionView: UICollectionView, shouldHighlightItemAt indexPath: IndexPath) -> Bool {
return true
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let path = Bundle.main.url(forResource: carImages[indexPath.row], withExtension: "jpg")
let data = try! Data(contentsOf: path!)
let image = UIImage(data: data)
return image!.size
}