Swift Split TableView in two sections

Question

I'm doing a project in Swift for my school, where I display data in a TableView. It shows information for two days, the actual day and the next day. Now I want to split the table in two Sections for each day. If it's possible with a section header with the date for each section. How can I do that, if I already have the TableView with the data. Best regards. ;)

    func parser(_ parser: XMLParser, didStartElement elementName: String, namespaceURI: String?, qualifiedName qName: String?, attributes attributeDict: [String : String] = [:]) {

    thisName = elementName

}

func parser(_ parser: XMLParser, didEndElement elementName: String, namespaceURI: String?, qualifiedName qName: String?) {
    if elementName == "element" {
        var myPlan = Plan()
        myPlan.klasse = planKlasse
        myPlan.raum = planRaum
        myPlan.vertreter = planVertreter
        myPlan.art = planArt
        myPlan.fach = planFach
        myPlan.stunde = planStunde
        myPlan.lehrer = planLehrer
        myPlan.datum = planDatum

        print(myPlan)
        tableViewDataSource.append(myPlan)


    }
}

func parser(_ parser: XMLParser, foundCharacters string: String) {


    let data = string.trimmingCharacters(in: CharacterSet.whitespacesAndNewlines)

    if data.count != 0 {
        switch thisName {
        case "klasse": planKlasse = data
        case "vertreter": planVertreter = data
        case "raum": if data.hasPrefix("SN") { planRaum = "SNÜRN" } else {planRaum = data}
        case "art": planArt = data
        case "fach": planFach = data
        case "stunde": planStunde = data
        case "lehrer": planLehrer = data; if (data.isEmpty) { planLehrer = "-"}
        case "datum": planDatum = data
        default:
            break
        }

    }
}

func parser(_ parser: XMLParser, parseErrorOccurred parseError: Error) {
    print("failure error: ", parseError)
}







func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    return 80
}


func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

    if (searchController.isActive && searchController.searchBar.text != "") {
        return filteredElements.count
    } else {
        return tableViewDataSource.count
    }
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    let myCell = tableView.dequeueReusableCell(withIdentifier: "reuseCell", for: indexPath)

    var element: Plan

    if (searchController.isActive && searchController.searchBar.text != "") {
        element = filteredElements[indexPath.row]
        myCell.backgroundColor = UIColor.orange
    } else {
        element = tableViewDataSource[indexPath.row]
        myCell.backgroundColor = UIColor.white
    }

    let myKlasseLabel = myCell.viewWithTag(11) as! UILabel
    let myVertreterLabel = myCell.viewWithTag(12) as! UILabel
    let myRaumLabel = myCell.viewWithTag(13) as! UILabel
    let myArtLabel = myCell.viewWithTag(15) as! UILabel
    let myFachLabel = myCell.viewWithTag(14) as! UILabel
    let myStundeLabel = myCell.viewWithTag(16) as! UILabel
    let myLehrerLabel = myCell.viewWithTag(17) as! UILabel
    let myDatumLabel = myCell.viewWithTag(18) as! UILabel


    myKlasseLabel.text = element.klasse
    myVertreterLabel.text = element.vertreter
    myRaumLabel.text = element.raum
    myArtLabel.text = element.art
    myFachLabel.text = element.fach
    myStundeLabel.text = element.stunde + "."
    myLehrerLabel.text = "(" + element.lehrer + ")"
    myDatumLabel.text = element.datum


    if (element.art == "Klausur") {
        myFachLabel.text = "-"
        myLehrerLabel.text = "-"
    }

    if ((defaults.object(forKey: "klasseWahlDef")) as? String != nil) {

        if (tableViewDataSource[indexPath.row].klasse == (defaults.object(forKey: "klasseWahlDef")) as? String) {
        myCell.backgroundColor = UIColor.orange
        } else if (tableViewDataSource[indexPath.row].vertreter == (defaults.object(forKey: "LehrerDef")) as? String) {
           myCell.backgroundColor = UIColor.orange
        }
    }

    if tableViewDataSource[indexPath.row].datum != "hi" {

        let dateFormatterGet = DateFormatter()
        dateFormatterGet.dateFormat = "yyyy-MM-dd"

        let dateFormatterPrint = DateFormatter()
        dateFormatterPrint.locale = Locale(identifier: "de_DE")
        dateFormatterPrint.dateFormat = "E dd.MM.yyyy"


        if let date = dateFormatterGet.date(from: element.datum){
            //print(dateFormatterPrint.string(from: date))
            myDatumLabel.text = dateFormatterPrint.string(from: date)
        }
        else {
            print("There was an error decoding the string")
        }
    }
    return myCell

}

Answer 1

You have to define numbers of sections you want to display:

func numberOfSections(in tableView: UITableView) -> Int {
   return 2
}

Then you have to define number of rows you want to display in every section:

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if section == 0 {
        //return number of rows in first section
    }
    else {
        //return number of rows in second section
    }
}

If you want to create custom header, then you can use this function:

func tableView(tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    // return custom header view
}

However, if you want to only display text in a header, you can use the default one and use only titleForHeaderInSection function.

Of course, you also have to return proper view for cell. If you want to check the section number, you can simply call

indexPath.section

Answer 2

Have you tried this func present in UITableViewDataSource:

    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    return yourDateString
}

Answer 3

Try checking code - https://github.com/RockinGarg/Expandable-TableView-.git

Required Code

//setting number of Sections
func numberOfSections(in tableView: UITableView) -> Int {
    return section.count
}

If you want to customise headerView

//Setting Header Customised View
func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {

    //Declare cell
    let headerCell = tableView.dequeueReusableCell(withIdentifier: "HeaderCell") as! TableViewCell

    //Setting Header Components
    headerCell.titleLabel.text = self.section[section]
    headerCell.ButtonToShowHide.tag = section

    //Handling Button Title
    if self.collapaseHandlerArray.contains(self.section[section]){
        //if its opened
        headerCell.ButtonToShowHide.setTitle("Hide", for: .normal)
    }
    else{
        //if closed
        headerCell.ButtonToShowHide.setTitle("Show", for: .normal)
    }

    //Adding a target to button
    headerCell.ButtonToShowHide.addTarget(self, action: #selector(ViewController.HandleheaderButton(sender:)), for: .touchUpInside)
        return headerCell.contentView

 }

Number Of Rows

//Setting number of rows in a section
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if self.collapaseHandlerArray.contains(self.section[section]){
        return items[section].count
    }
    else{
        return 0
    }        
}