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[英]Must call a designated initializer of the superclass 'UITableViewCell'
[英]Must call a designated initializer of the superclass 'UICollectionView'
嘗試初始化集合視圖類並收到以下錯誤:
必須調用超類“UICollectionView”的指定初始值設定項
數據正在從另一個 ViewController 傳遞,我希望在用戶搜索時從 ViewController 中繪制框架。
class searchLocationsCollectionViewManager: UICollectionView, UICollectionViewDataSource, UICollectionViewDelegate {
weak var collectionView: UICollectionView! {
didSet {
collectionView.dataSource = self
collectionView.delegate = self
}
}
// Data handler
var data: [[String:Any]]? {
didSet {
print(data!)
//collectionView.reloadData()
}
}
init(collectionView: UICollectionView, frame: CGRect) {
self.collectionView = collectionView
super.init()
}
required init(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)!
}
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 3
}
// This is the current method for returning the cell.
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
return UICollectionViewCell()
}
關於為什么會發生上述情況的任何想法?
您需要調用UICollectionView
指定初始值設定項init(frame:collectionViewLayout:)
。
init(collectionView: UICollectionView, frame: CGRect) {
self.collectionView = collectionView
//Setup collectionView layout here and pass with init
let layout = UICollectionViewLayout()
super.init(frame: frame, collectionViewLayout: layout)
}
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