如何将选定的tableview行存储在数组中? [英] how to store selected tableview rows in an array?
问题描述
我知道有比我的方式更好的选择行的方法(也欢迎选择行).否则我只需要知道如何从 tableview 存储选定的行，当点击完成按钮(栏项目)
I know there is better way to select a row then my way( which one welcome too). otherwise else I only need to know how to store selected rows from tableview ,when click Done button(bar item)
注意:在我的 tableview 中，我有多个部分，如果我从一个部分中选择一行，其他部分的行将被取消选择.
Note: in my tableview, I have multiple sections and if I select one row from one section, other section's rows will be unselected.
更多说明，假设有 3 个部分，每个部分有 5 行.
for more clarification, suppose there are 3 sections, each section has 5 rows.
step1 : 我在 section1 中选择 row1 和 row2
step1 : I select row1 and row2 in section1
step2:如果我从第 2 节或第 3 节中选择任何行，则第 1 节的所有行都将被取消选择.
step2: if I select any row from section 2 or section 3, section1's all row deselected.
第 3 步:假设用户从第 3 部分中选择第 3 行和第 5 行，然后按下完成按钮
step 3: suppose user select row3 and row 5 from section 3 and then press done button
第 4 步:现在我想将行的值(名称)存储在一个数组中.
step 4: now I want to store row's value (name) in an array.
我的代码如下，
extension TradeSelectionController {
override func numberOfSections(in tableView: UITableView) -> Int {
if isSearching && searchController.searchBar.text != "" {
return viewModel.filteredCategories?.count ?? 0
}else{
return viewModel.categorySkills.count
}
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if isSearching && searchController.searchBar.text != ""{
return viewModel.filteredCategories?[section].skill.count ?? 0
}else{
let section = viewModel.categorySkills[section]
return section.skill.count
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
var cell = tableView.dequeueReusableCell(withIdentifier: "TradeSelectionTableViewCell")
if ((cell != nil)) {
cell = UITableViewCell(style: .subtitle, reuseIdentifier: "TradeSelectionTableViewCell")
}
if isSearching && searchController.searchBar.text != "" {
cell?.textLabel?.textColor = UIColor.lightGray
cell?.textLabel?.font = UIFont.systemFont(ofSize: 10)
cell?.textLabel?.text = "(\(String(describing: viewModel.categorySkills[indexPath.section].vName)))"
let text =
viewModel.filteredCategories?[indexPath.section].skill[indexPath.row].vName
//don't change order , change text size
cell?.detailTextLabel?.font = UIFont.systemFont(ofSize: 16)
cell?.detailTextLabel?.text = text
}else{
cell?.textLabel?.text = viewModel.categorySkills[indexPath.section].skill[indexPath.row].vName
}
if selectedIngredients.contains(indexPath){
cell?.accessoryType = .checkmark
cell?.backgroundColor = UIColor.lightGray
}else{
cell?.accessoryType = .none
cell?.backgroundColor = .none
}
return cell!
}
override func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
if isSearching && searchController.searchBar.text != ""{
return viewModel.filteredCategories?[section].vName
}else{
let titleText = viewModel.categorySkills[section].vName
return titleText
}
}
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
lastSelectedIndexPath = indexPath.section
if self.selectedIngredients.contains(indexPath){
self.selectedIngredients.remove(indexPath)
totalSkills[indexPath.row] = false
}else{
self.selectedIngredients.insert(indexPath)
totalSkills[indexPath.row] = true
}
self.tableView.reloadData()
}
override func tableView(_ tableView: UITableView, willSelectRowAt indexPath: IndexPath) -> IndexPath? {
print(selectedIngredients)
if lastSelectedIndexPath != nil {
if lastSelectedIndexPath != indexPath.section {
selectedIngredients.removeAll()
print(selectedIngredients)
}
}
return indexPath
}
// override func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
// return 30
// }
override func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 50
}
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let headerView = UIView(frame: CGRect(x: 0, y: 0, width: tableView.frame.width, height: 50))
// headerView.addRoundCorner(10)
headerView.backgroundColor = .lightGray
let label = UILabel()
label.frame = CGRect.init(x: 10, y: 5, width: headerView.frame.width-10, height: headerView.frame.height-10)
label.text = viewModel.categorySkills[section].vName
label.font = ThemeFonts.font(with: 16, for: .bold)
label.textColor = ThemeColors.primaryTextColor
headerView.addSubview(label)
return headerView
}
}
我尝试过如下所示，但不起作用....
I have tried like below, but is not working....
@objc private func doneAction(_ sender: Any?) {
var selectedSkills = [Skill]()
if let selectedIndex = tableView.indexPathsForSelectedRows {
selectedIndex.forEach({
//viewModel.categorySkills[indexPath.section].skill[indexPath.row].vName
//let skill = viewModel.skills[$0.row]
let skill = filteredObjects[$0.row]
print(skill)
// selectedSkills.append(skill)
})
}
dismiss(animated: true, completion: nil)
}
推荐答案
向表示数据模型中单元格的结构添加选定标志.(对于分段表视图，结构的二维数组可以很好地用作数据模型.)
Add a selected flag to the struct that represents cells in your data model.(For sectioned table view a 2-dimensional array of structs works well as a data model.)
在响应用户选择单元格的代码中维护该标志.
Maintain that flag in your code that responds to the user selecting cells.
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