How to select a UITableview Cell automatically? - ios

Question

I'm working on a Quiz App. I am getting questions from API. I'm using tableview for the Options.
Now when the user selects the answer for the 1st question & presses Next comes to the previous question. Then the selected answer has to remain selected.
I researched a lot and found this:
Programmatically emulate the selection in UITableViewController in Swift
But I can't automatically select the user selected answer in my table view.
This is my Present UI
VC
func getOptions(){
OptionArray.removeAll(keepCapacity: false)
Alamofire.request(.GET, "http://www.wins.com/index.php/capp/get_chapter_answers/\(EID)/\(QuestionID[Qindex])")
.responseJSON { (_, _, data, _) in
println(data)
let json = JSON(data!)
let catCount = json.count
for index in 0...catCount-1 {
let disp = json[index]["DISPLAY_STATUS"].string
if disp == "Y"{
let op = json[index]["ANSWER"].string
self.OptionArray.append(op!)
let ans = json[index]["RIGHT_ANSWER"].string
self.AnswerArray.append(ans!)
}
}
self.OptionTable.reloadData()
println(self.OptionArray.count)
}
}
#IBAction func Previous(sender: AnyObject) {
Qindex--
ShowQuestion()
}
#IBAction func Next(sender: AnyObject) {
Qindex++
ShowQuestion()
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.OptionArray.count
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = self.OptionTable.dequeueReusableCellWithIdentifier("Option") as! OptionCell
cell.Optionlabel?.text = self.OptionArray[indexPath.row]
cell.layer.masksToBounds = true;
cell.layer.cornerRadius = 6;
cell.layer.borderWidth = 2.0
cell.layer.borderColor = colorsArray[1].CGColor
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let indexPath = tableView.indexPathForSelectedRow();
let currentCell = tableView.cellForRowAtIndexPath(indexPath!) as! OptionCell;
if currentCell.selected == true{
currentCell.layer.borderWidth = 4.0
currentCell.layer.borderColor = colorsArray[6].CGColor
println(currentCell.Optionlabel?.text)
}
}
func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {
let currentCell = tableView.cellForRowAtIndexPath(indexPath) as! OptionCell;
if currentCell.selected == false{
currentCell.layer.borderWidth = 2.0
currentCell.layer.borderColor = colorsArray[1].CGColor
}
}
func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat {
return 70
}
UPDATE
I have over 20 Questions. So i have to save the Selected answer for Each Questions separately.
I can't select the answer using the indexpath position because the options will change it positions randomly when it is accessed for the second time.

Answer 1

You can do it this way :
When you press next, store the selected answer's index into a variable and when you come back to previous, check that index in willDisplayCell method and the set your cell selected.
Take a variable in your controller
var selectedAnsIndexPath:NSIndexPath?
your next button action will be something like
#IBAction func Next(sender: AnyObject) {
self.selectedAnsIndexPath = tableView.indexPathForSelectedRow()
Qindex++
ShowQuestion()
}
and then
func tableView(tableView: UITableView, willDisplayCell cell: UITableViewCell, forRowAtIndexPath indexPath: NSIndexPath) {
if(indexPath == self.selectedAnsIndexPath)
{
cell.setSelected(true, animated: false)
}
}
Try this, it may work for you!
UPDATE
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = self.OptionTable.dequeueReusableCellWithIdentifier("Option") as! OptionCell
cell.Optionlabel?.text = self.OptionArray[indexPath.row]
cell.QueID = QuestionID[Qindex]
cell.layer.masksToBounds = true;
cell.layer.cornerRadius = 6;
cell.layer.borderWidth = 2.0
cell.layer.borderColor = colorsArray[1].CGColor
if let val = examDic[cell.QueID]
{
if self.OptionArray[indexPath.row] == val
{
selectedAnsIndexPath = indexPath
cell.setSelected(true, animated: true)
cell.layer.borderWidth = 4.0
cell.layer.borderColor = colorsArray[6].CGColor
}
}
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
if selectedAnsIndexPath != nil{
OptionTable.deselectRowAtIndexPath(selectedAnsIndexPath!, animated: false)
self.tableView(OptionTable, didDeselectRowAtIndexPath: selectedAnsIndexPath!)
println(selectedAnsIndexPath!.row)
}
let indexPath = OptionTable.indexPathForSelectedRow();
let currentCell = OptionTable.cellForRowAtIndexPath(indexPath!) as! OptionCell;
if currentCell.selected == true{
currentCell.layer.borderWidth = 4.0
currentCell.layer.borderColor = colorsArray[6].CGColor
var sqid = QuestionID[Qindex]
var sanswer = currentCell.Optionlabel!.text
examDic[sqid] = sanswer!
println(examDic)
}
}