swift3 - How to apply filter based on multiple selected rows in UITableView using swift 3

Question

Hello all m having multisectioned tableview design like

want to apply filter based on the selected rows in which all the selection is in OR condition except the searchcriteria section(this section is mandatory),now what i want to achieve is want to save all the selection and filter the data when user clicks on Apply button.How to achieve this.Please help.

note:i dont want to use any database coz in future i have to post all the selected values using POST method.

Code :

ViewController.swift

import UIKit

class ViewController: UIViewController,ExpandableHeaderViewDelegate,UITableViewDelegate,UITableViewDataSource {

@IBOutlet weak var tableview: UITableView!

var sections =     [

Section(sectionname: "Year" ,
        cellnames: ["2017-2018","2016-2017","2015-2016"],
        expanded: false,
        subtitle: "Please select a Year"),

Section(sectionname: "School",
        cellnames: ["School A","School B","School C"],
        expanded: false,
        subtitle: "Please select a School"),

Section(sectionname: "SearchCriteria",
        cellnames: ["No of Students","No of Student on RTE","No of Differently Abled Students","No of Student Opted For School Transport"],
        expanded: false,
        subtitle: "Please select your SearchCriteria"),

Section(sectionname: "Class",
        cellnames: ["IX","X","XI","XII"],
        expanded: false,
        subtitle: "Please select a Class"),

Section(sectionname: "Section",
        cellnames: ["A","B","C","D","E"],
        expanded: false,
        subtitle: "Please Select a Section")

]

var selectIndexPath : IndexPath!
override func viewDidLoad() {
    super.viewDidLoad()

    self.tableview.allowsMultipleSelection = true
    selectIndexPath = IndexPath(row: -1, section: -1)
    let nib = UINib(nibName: "ExpandableHeaderView", bundle: nil)
    tableview.register(nib, forHeaderFooterViewReuseIdentifier: "expandableHeaderView")
    // Do any additional setup after loading the view, typically from a nib.
}

func numberOfSections(in tableView: UITableView) -> Int {

    return sections.count
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return sections[section].cellnames.count
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
    return 44
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    if (sections[indexPath.section].expanded)
    {
        return 44
    }
    else
    {
        return 0
    }
}
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
    return 2
}
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    let headerview = tableview.dequeueReusableHeaderFooterView(withIdentifier: "expandableHeaderView") as! ExpandableHeaderView
    headerview.customInit(title: sections[section].sectionname, subtitle: sections[section].subtitle, section: section, delegate: self)
    return headerview

}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableview.dequeueReusableCell(withIdentifier: "labelcell")
    cell?.textLabel?.text = sections[indexPath.section].cellnames[indexPath.row]
    cell?.accessoryType = (indexPath == selectIndexPath) ? .checkmark : .none
    return cell!

}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    self.selectIndexPath = indexPath
    self.sections[indexPath.section].subtitle = (tableview.cellForRow(at: indexPath)?.textLabel?.text)!
    sections[indexPath.section].expanded = !sections[indexPath.section].expanded
    tableview.beginUpdates()
    tableview.reloadSections([indexPath.section], with: .automatic)
    tableview.endUpdates()

}
func toggleSection(header:ExpandableHeaderView,section : Int)
{
    sections[section].expanded = !sections[section].expanded
    tableview.beginUpdates()
    for i in 0 ..< sections[section].cellnames.count {
        tableview.reloadRows(at: [IndexPath(row: i, section: section)], with: .automatic)
    }
    tableview.endUpdates()
}



@IBAction func done_action(_ sender: Any) {

}


override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}


}

ExpandableHeaderView.xib

ExpandableHeaderView.swift

 import UIKit
 protocol ExpandableHeaderViewDelegate {
 func toggleSection(header:ExpandableHeaderView,section:Int)

}

class ExpandableHeaderView: UITableViewHeaderFooterView {

var delegate :ExpandableHeaderViewDelegate?
var section : Int!
@IBOutlet weak var TitleLabel: UILabel!

@IBOutlet weak var SubTitleLabel: UILabel!


override init(reuseIdentifier: String?) {
    super.init(reuseIdentifier: reuseIdentifier) 
    self.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(selectHeaderView)))

}

required init?(coder aDecoder: NSCoder) {
    super.init(coder : aDecoder )

    self.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(selectHeaderView)))

}

func selectHeaderView(gesture:UITapGestureRecognizer)
{
    let cell = gesture.view as! ExpandableHeaderView
    delegate?.toggleSection(header: self, section: cell.section)
}
func customInit(title:String,subtitle : String,section:Int,delegate:ExpandableHeaderViewDelegate)
{
    self.TitleLabel.text = title
    self.SubTitleLabel.text = subtitle
    self.section = section
    self.delegate = delegate
}

override func layoutSubviews() {
    super.layoutSubviews()
    self.TitleLabel?.textColor = UIColor.white
    self.SubTitleLabel?.textColor = UIColor.white
    self.SubTitleLabel?.alpha = 0.7
    self.contentView.backgroundColor = UIColor.darkGray
}
 }

Section.swift

 import Foundation

  struct Section
 {
   var sectionname : String!
   var cellnames : [String]!
   var expanded : Bool!
   var subtitle : String!

   init(sectionname:String,cellnames : [String],expanded : Bool,subtitle : String)
  {
    self.sectionname = sectionname
    self.cellnames = cellnames
    self.expanded = expanded
    self.subtitle = subtitle
}
}

Please Help.I googled a lot but cant find the soultion of my scenario.

Answer 1

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