我在 UIKit 中使用領域。我設定了保存到領域，一切都顯示在 MongoDB Realm Studio 中，但是當我希望這些資料顯示在 UITableView 中時，什么都沒有。我寫了一個擴展，好像沒有錯誤，但是不明白為什么不顯示資料。
extension ViewController: UITableViewDelegate, UITableViewDataSource{
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return spendingDBArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! CustomTableViewCell
let spending = spendingDBArray[indexPath.row]
cell.recordCategory.text = spending.category
cell.recordMoney.text = "\(spending.cost)"
print("work")
switch spending.category {
case "Home": cell.recordImage.image = #imageLiteral(resourceName: "Frame 4")
case "Clothes": cell.recordImage.image = #imageLiteral(resourceName: "Frame 8")
case "Connection": cell.recordImage.image = #imageLiteral(resourceName: "Frame 7")
case "Auto": cell.recordImage.image = #imageLiteral(resourceName: "Frame 3")
case "Pharmacy": cell.recordImage.image = #imageLiteral(resourceName: "Frame 2")
case "Products": cell.recordImage.image = #imageLiteral(resourceName: "Frame 1")
case "Cafe": cell.recordImage.image = #imageLiteral(resourceName: "Frame 6")
case "Other": cell.recordImage.image = #imageLiteral(resourceName: "Frame 5")
default:
cell.recordImage.image = #imageLiteral(resourceName: "Rectangle 1")
}
return cell
}
}
uj5u.com熱心網友回復：
我通過以下方式獲取我的領域資料：
lazy var yourvarname: Results<yourObjectClass> = {
self.realm.objects(yourObjectClass.self) }()
cell.textlabel.text = yourvarname[indexPath.row].varinyourObjectClass
不需要擴展。
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