Я хочу развернуть и свернуть многоуровневый массив в uitableview, как показано ниже:
- Cat1
- SubCat1
- SubCat2
- Информация 1
- Информация 2
- SubCat3
- Информация 1
- Информация 2
- Cat2
- SubCat1
- Информация 1
- Информация 2
Для этой цели я сделал следующий код.
struct CellData {
var opened = Bool()
var subCatTitle = String()
var subCatList = [String]()
}
struct MainModel {
var opened = Bool()
var categoryTitle = String()
var categoryList = [CellData]()
}
Я составил список
@IBOutlet var expandableThreeStageTableView: UITableView!
var arrayList = [CellData]()
var expandableList = [MainModel]()
func loadData(){
arrayList.append(CellData(opened: false, subCatTitle: "SubCat1", subCatList: ["Info1","Info2","Info3"]))
arrayList.append(CellData(opened: false, subCatTitle: "SubCat2", subCatList: ["Info1","Info2","Info3"]))
arrayList.append(CellData(opened: false, subCatTitle: "SubCat3", subCatList: ["Info1","Info2"]))
arrayList.append(CellData(opened: false, subCatTitle: "SubCat4", subCatList: ["Info1"]))
expandableList.append(MainModel(opened: true, categoryTitle: "Cat1", categoryList: arrayList))
expandableList.append(MainModel(opened: false, categoryTitle: "Cat2", categoryList: arrayList))
expandableList.append(MainModel(opened: false, categoryTitle: "Cat3", categoryList: arrayList))
}
И делегируйте, методы источника данных приведены ниже
extension TextFieldAsSearchVC : UITableViewDataSource{
func numberOfSections(in tableView: UITableView) -> Int {
return expandableList.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section:
Int) -> Int {
if expandableList[section].opened{
if expandableList[section].categoryList[section].opened{
return
expandableList[section].categoryList[section].subCatList.count////which extra count should return here
}else{
print("COUNT ",expandableList[section].categoryList.count)
return expandableList[section].categoryList.count +
1///here +1 is for catname + subcatname
}
}else{
return 1
}
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath:
IndexPath) -> UITableViewCell {
if indexPath.row == 0{
let cell =
expandableThreeStageTableView.dequeueReusableCell(withIdentifier:
"TextFieldAsSearchVCCell", for: indexPath) as! TextFieldAsSearchVCCell
cell.lblValue.text =
expandableList[indexPath.section].categoryTitle
return cell
}else if indexPath.row <=
expandableList[indexPath.section].categoryList.count{
let cell =
expandableThreeStageTableView.dequeueReusableCell(withIdentifier:
"SectionDataCell", for: indexPath) as! SectionDataCell
cell.rowLabel.text =
expandableList[indexPath.section].categoryList[indexPath.row -
1].subCatTitle
return cell
}
else{
let cell =
expandableThreeStageTableView.dequeueReusableCell(withIdentifier:
"SectionDataCell", for: indexPath) as! SectionDataCell
cell.rowLabel.text =
expandableList[indexPath.section].categoryList[indexPath.row].
subCatList[indexPath.row]//how to access rows in subcategories
return cell
}
}
}
extension TextFieldAsSearchVC : UITableViewDelegate{
func tableView(_ tableView: UITableView, didSelectRowAt indexPath:
IndexPath) {
if indexPath.row == 0{
if expandableList[indexPath.section].opened{
expandableList[indexPath.section].opened = false
//now reload the section
let sections = IndexSet(integer: indexPath.section)
expandableThreeStageTableView.reloadSections(sections,
with: .automatic)
}else{
expandableList[indexPath.section].opened = true
//now reload sections
let sections = IndexSet(integer: indexPath.section)
expandableThreeStageTableView.reloadSections(sections,
with: .automatic)
}
}else {
if
expandableList[indexPath.section].categoryList[indexPath.row].opened{
expandableList[indexPath.section].categoryList[indexPath.row].opened =
false
expandableThreeStageTableView.reloadRows(at:
[IndexPath(index: indexPath.row)], with: .automatic)
}else{
expandableList[indexPath.section].categoryList[indexPath.row].opened =
true
expandableThreeStageTableView.reloadRows(at:
[IndexPath(index: indexPath.row)], with: .automatic)
}
}
}
}
Из приведенного выше кода я могу развернуть и свернуть Категориино не подкатегории .. Когда я пытался нажать на подкатегории, это выдает мне ошибку
*** Terminating app due to uncaught exception
'NSInternalInconsistencyException', reason: 'Invalid index path for use
with UITableView. Index paths passed to table view must contain exactly
two indices specifying the section and row. Please use the category on
NSIndexPath in NSIndexPath+UIKitAdditions.h if possible.'
Как бороться с таким типом логики?