Selected row from each section of UITableView ( Multiple Selection ) - ios

Question

I have used tableview(grouped).
So i need to select one row from the each section of UITableviewSection.
So for that i have tableview and one submit button .So i need to check when i click on the submit button i need to check whether i have selected one row from the each section ,if not then show alert as not selected the section number.How to check?
This is my data.
{
"data":[
{
"question": "Gender",
"options": ["Male","Female"]
},
{
"question": "How old are you",
"options": ["Under 18","Age 18 to 24","Age 25 to 40","Age 41 to 60","Above 60"]
},
{
"question": "I am filling the Questionnaire for?",
"options": ["Myself","Mychild","Partner","Others"]
}
]
}
QuestionModel:-
class QuestionListModel: NSObject {
var selected = false
var dataListArray33:[NH_OptionsModel] = []
var id:Int!
var question:String!
var buttontype:String!
var options:[String]?
var v:String?
var optionsModelArray:[OptionsModel] = []
init(dictionary :JSONDictionary) {
guard let question = dictionary["question"] as? String,
let typebutton = dictionary["button_type"] as? String,
let id = dictionary["id"] as? Int
else {
return
}
if let options = dictionary["options"] as? [String]{
print(options)
print(options)
for values in options{
print(values)
let optionmodel = OptionsModel(values: values)
self.optionsModelArray.append(optionmodel)
}
}
self.buttontype = typebutton
self.question = question
self.id = id
// print(self.dataListArray33)
}
}
optionModel:-
class OptionsModel: NSObject {
var isSelected:Bool? = false
var v:String?
var values:String?
init(values:String) {
self.values = values
print( self.values)
}
ViewModel:-
func numberOfSections(tableView: UITableView) -> Int{
print((datasourceModel.dataListArray?.count)!)
return (datasourceModel.dataListArray?.count)!
}
func titleForHeaderInSection(atsection section: Int) -> NH_QuestionListModel {
return datasourceModel.dataListArray![section]
}
func numberOfRowsIn(section:Int) -> Int {
print( datasourceModel.dataListArray?[section].optionsModelArray.count ?? 0)
return datasourceModel.dataListArray?[section].optionsModelArray.count ?? 0
// return self.questionsModelArray?[section].optionsModelArray.count ?? 0
}
func datafordisplay(atindex indexPath: IndexPath) -> NH_OptionsModel{
print(datasourceModel.dataListArray![indexPath.section].optionsModelArray[indexPath.row])
return datasourceModel.dataListArray![indexPath.section].optionsModelArray[indexPath.row]
}
func question(answer:String) {
print(questions)
questions.append(answer)
print(questions )
}
func questionlist(answer:String) {
print( questionlist )
questionlist.append(answer)
print( questionlist )
}
func answer(answer:String) {
answers.append(answer)
print(answers)
}
and finally viewController:-
func numberOfSections(in tableView: UITableView) -> Int {
return questionViewModel.numberOfSections(tableView: tableView)
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let identifier = "HeaderCell"
var headercell: questionheader! = tableView.dequeueReusableCell(withIdentifier: identifier) as? questionheader
if headercell == nil {
tableView.register(UINib(nibName: "questionheader", bundle: nil), forCellReuseIdentifier: identifier)
headercell = tableView.dequeueReusableCell(withIdentifier: identifier) as? NH_questionheader
}
headercell.setReviewData(reviews:questionViewModel.titleForHeaderInSection(atsection:section))
return headercell
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 150
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return questionViewModel.numberOfRowsIn(section: section)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let identifier = "Cell"
var cell: QuestionListCell! = tableView.dequeueReusableCell(withIdentifier: identifier) as? QuestionListCell
if cell == nil {
tableView.register(UINib(nibName: "QuestionListCell", bundle: nil), forCellReuseIdentifier: identifier)
cell = tableView.dequeueReusableCell(withIdentifier: identifier) as? NH_QuestionListCell
}
cell.contentView.backgroundColor = UIColor.clear
let questionsModel = questionViewModel.titleForHeaderInSection(atsection:indexPath.section)
print(questionsModel.buttontype)
questionViewModel.button = questionsModel.buttontype
cell.setOptions(Options1: questionViewModel.datafordisplay(atindex: indexPath))
print("Section \(indexPath.section), Row : \(indexPath.row)")
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath){
print("Section \(indexPath.section), Row : \(indexPath.row)")
let cell = tableview.cellForRow(at: indexPath) as? NH_QuestionListCell
let model = questionViewModel.datafordisplay(atindex: indexPath)
print(model.isSelected)
cell?.setOptions(OptionsSelected:questionViewModel.datafordisplay(atindex: indexPath))
print(model.isSelected)
questionViewModel.isselected = model.isSelected!
let section = indexPath.section
let index = indexPath.row
print(section)
print(index)
if !questionViewModel.selectedIndexPaths.contains(indexPath) {
questionViewModel.selectedIndexPaths.append(indexPath)
print(questionViewModel.selectedIndexPaths.append(indexPath))
let questionModel = questionViewModel.titleForHeaderInSection(atsection: section)
print(questionModel.question)
questionViewModel.question = questionModel.question
questionViewModel.questionlist(answer: questionViewModel.question!)
let cell = tableview.cellForRow(at: indexPath) as? NH_QuestionListCell
let model = questionViewModel.datafordisplay(atindex: indexPath)
print(model.values)
questionViewModel.answer(answer: model.values!)
let value: Int = questionModel.id
let string = String(describing: value)
//let x: Int? = Int(model.id)
questionViewModel.question_id = string
questionViewModel.question(answer: questionViewModel.question_id!)
print(questionModel.id)
// append the selected index paths
} // if indexPath.section == section {
// questionViewModel.indexPath(indexPaths: index)
// }
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
if let index = questionViewModel.selectedIndexPaths.index(of: indexPath) {
print(index)
questionViewModel.selectedIndexPaths.remove(at: index)
}
}
According to this i got the output .
But i have button action in viewcontroller.
#IBAction func forward(_ sender: AnyObject) {
}
In this button action i need to check whether from each section did i selected one row or not .if not show alert .How to do
my current didselect method :-
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath){
let cell = tableview.cellForRow(at: indexPath) as? NH_QuestionListCell
let model = questionViewModel.datafordisplay(atindex: indexPath)
print(model.isSelected)
cell?.setOptions(OptionsSelected:questionViewModel.datafordisplay(atindex: indexPath))
print(model.isSelected)
questionViewModel.isselected = model.isSelected!
let section = indexPath.section
let index = indexPath.row
print(section)
print(index)
if !questionViewModel.selectedIndexPaths.contains(indexPath) {
questionViewModel.selectedIndexPaths.append(indexPath)
print(questionViewModel.selectedIndexPaths.append(indexPath))
let questionModel = questionViewModel.titleForHeaderInSection(atsection: section)
print(questionModel.question)
questionViewModel.question = questionModel.question
questionViewModel.questionlist(answer: questionViewModel.question!)
let cell = tableview.cellForRow(at: indexPath) as? NH_QuestionListCell
let model = questionViewModel.datafordisplay(atindex: indexPath)
print(model.values)
questionViewModel.answer(answer: model.values!)
let value: Int = questionModel.id
let string = String(describing: value)
//let x: Int? = Int(model.id)
questionViewModel.question_id = string
questionViewModel.question(answer: questionViewModel.question_id!)
print(questionModel.id)
}
I have 3 array
According to this didselect method:-
ex:-for section 1 :-i selected 1st row so the data append as below.
questionlist:["How r u?"]
answelist:["fine"]
But suppose i think that i need 2nd indexpath ,so i need to remove the previous appended data from arrays and append the current data .As below:
questionlist:["How r u?"]
answelist:["not well"]
And next for section 2 : i selected 1st indexpath.row data .then that data is append.So i need to get as below:-
questionlist:["How r u?","Gender"]
answelist:["not well","Male"]
Here selecting i think that i need the 2nd option then remove the added indexpath.row data from array and show as:-
questionlist:["How r u?","Gender"]
answelist:["not well","Female"]
Such way how to set?

Answer 1

you can update your model based on the selection like
"data":[
{
"question": "Gender",
"options": ["Male","Female"],
"optionSelected": "Male"
}
]
and on Submit , check data for selections

Answer 2

The table view has a property to get selected index paths. You can use all native components for that. What you need is to deselect an item at index path where one is already selected in a certain section. You also just need to then check that the number of selected index paths is the same as number of arrays in your data source.
Check something like this:
var dataSource: [[Any]]!
var tableView: UITableView!
func didSelectRowAt(_ indexPath: IndexPath) {
guard let selectedPaths = tableView.indexPathsForSelectedRows else { return } // We need to have selected paths
guard selectedPaths.contains(indexPath) == false else { return } // The same cell being selected
let previouslySelectedCellIndexPaths: [IndexPath] = selectedPaths.filter { $0.section == indexPath.section && $0 != indexPath } // Getting all selected index paths within this section
previouslySelectedCellIndexPaths.forEach { tableView.deselectRow(at: $0, animated: true) } // Deselect waht was previously selected
}
/// Will return array of selected objects only if all sections have a selected index
///
/// - Returns: A result array
func getSelectionData() -> [Any]? {
guard let selectedPaths = tableView.indexPathsForSelectedRows else { return nil } // We need to have selected paths
guard selectedPaths.count == dataSource.count else { return nil } // This should prevent missing selections assuming all index paths are unique in sections
return selectedPaths.map { dataSource[$0.section][$0.row] } // Map selected index paths back to objects
}
I tried to use kind of minimum code to show all of this. It is all commented so you can see row by row what goes on.
You might want to check is all sections are unique the second method but it is not needed if the first one is always used.

Answer 3

You can store selected indexPath in an array. OnClick of submit just loop through array and check either at least one element is from each section.
FYI : indexPath contains section info also.
Declare an mutable array and allocate in viewDidLoad.
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[anArray addObject:indexPath];
}
on Submit action follow this, you can improvise based on your requirement
-(void)onSubmitAction{
[anArray addObject:indexPath];
NSMutableArray *countOfSection=[[NSMutableArray alloc]init];
for (NSIndexPath*indexPath in anArray ) {
if(![anArray containsObject:indexPath.section])
[countOfSection addObject:indexPath.section];
}
if(countOfSection.count == self.tableview.numberOfSections){
//write your code
}else{
// show alert
}
}

Answer 4

Step 1 : Create Global Variable
var selectedIndexPaths = [IndexPath]()
Step 2: Add UITableView Property
tableView.allowsMultipleSelection = true
Step 3 : Implement the delegate methods
//On Selection
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let selectedIndexPathAtCurrentSection = selectedIndexPaths.filter({ $0.section == indexPath.section})
for indexPath in selectedIndexPathAtCurrentSection {
tableView.deselectRow(at: indexPath, animated: true)
if let indexOf = selectedIndexPaths.index(of: indexPath) {
selectedIndexPaths.remove(at: indexOf)
}
}
selectedIndexPaths.append(indexPath)
}
// On DeSelection
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
if let index = selectedIndexPaths.index(of: indexPath) {
selectedIndexPaths.remove(at: index)
}
}
Step 4: Getting Selected IndexPaths with sections
#IBAction func forward(sender:Any){
let totalSections = questionViewModel.numberOfSections(tableView: tableView)
for section in 0..<totalSections {
if (selectedIndexPaths.filter({ $0.section == section}).count >= 1) {
continue
} else {
// Show alert
print("Please select item at",(section))
return
}
}
}