我知道典型的解决方案是将delegate
中的tableView
分配给UIViewController
。这里的问题是,这实际上是UITableViewController
。话虽如此,这就是问题所在。
我有CategoriesTVC
,它是从SwipeTVC
继承的(SwipeTVC
的超类是UITableViewController
)。一切都很好,突然停了下来。不知道为什么。
我在didSelectRowAt
方法上设置了一个断点,但从未执行过。这是代码:
class CategoryTVC: SwipeTVC {
let realm = try! Realm()
var categories: Results<Category>?
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "goToItems" {
let destination = segue.destination as! ToDoListTVC
if let indexPath = tableView.indexPathForSelectedRow {
destination.selectedCategory = categories?[indexPath.row]
}
}
}
// MARK: - Table view data source
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return categories?.count ?? 1
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = super.tableView(tableView, cellForRowAt: indexPath)
cell.textLabel?.text = categories?[indexPath.row].name ?? "No categories added yet"
cell.backgroundColor = UIColor(hexString: categories?[indexPath.row].backgroundColor ?? "DA7553")
return cell
}
// MARK: Table View Delegate methods
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
super.tableView(tableView, didSelectRowAt: indexPath)
performSegue(withIdentifier: "goToItems", sender: self)
}
}
class SwipeTVC: UITableViewController, SwipeTableViewCellDelegate {
var cell: UITableViewCell?
// MARK:- Table View DataSource
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell") as! SwipeTableViewCell
cell.delegate = self
return cell
}
func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> [SwipeAction]? {
guard orientation == .right else { return nil }
let deleteAction = SwipeAction(style: .destructive, title: "Delete") { action, indexPath in
self.updateModel(at: indexPath)
}
deleteAction.image = UIImage(named: "delete")
return [deleteAction]
}
func tableView(_ tableView: UITableView, editActionsOptionsForRowAt indexPath: IndexPath, for orientation: SwipeActionsOrientation) -> SwipeOptions {
var options = SwipeOptions()
options.expansionStyle = .destructive
return options
}
// MARK:- Swipe Actions
func updateModel(at indexPath: IndexPath) {
// overridden in VC
}
}
答案 0 :(得分:0)
更有效的解决方案:
将序列从表视图单元格连接到目标控制器,而不是从视图 controller 连接到目标控制器,删除didSelectRowAt
并将prepare(for
替换为
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier == "goToItems" {
let destination = segue.destination as! ToDoListTVC
let cell = sender as! SwipeTableViewCell
if let indexPath = tableView.indexPath(for: cell) {
destination.selectedCategory = categories?[indexPath.row]
}
}
}
答案 1 :(得分:0)
我发现了问题。我不小心将tableView
selection
更改为no selection
。我的错。这不是代码。