I'm working on a tableview
I want to be able to tap on each cell and when tapped, it displays a checkmark on the cell
Now I have some code that makes this work:
// checkmarks when tapped
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
let section = indexPath.section
let numberOfRows = tableView.numberOfRowsInSection(section)
for row in 0..<numberOfRows {
if let cell = tableView.cellForRowAtIndexPath(NSIndexPath(forRow: row, inSection: section)) {
cell.accessoryType = row == indexPath.row ? .Checkmark : .None
}
}
}
but this code only selects 1 cell inside a section (I have 5 sections)
I need it to select any cell anywhere
Also when I drag my screen up and down I lose by checkmark
viewcontroller.swift
class ViewController: UIViewController, UITableViewDataSource { //class and subclass |)
//---------------------------------------------------------------------------------------------------------------------------/
// Variable and constant, also IBAOutlet
let section1 =
["this is used",
"this is used to test",
"this is used to test the lenght",
"this is used to test the lenght of the text",
"this is used to test the lenght of the text",
"this is used to test the lenght of the text",
"this is used to test the lenght of the text",
"this is used to test the lenght of the text",
"this is used to test the lenght of the text",]
let section2 =
["this is used to test the lenght of the text"]
let section3 =
["this is",
"this is ",]
@IBOutlet weak var scoreshow: UILabel!
@IBOutlet weak var reset: UIButton!
@IBOutlet weak var tableView: UITableView!
// --------------------------------------------------------------------------------------
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
//----------------------------------------------------------------------------------------
// checkmarks when tapped
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
{
if let cell = tableView.cellForRowAtIndexPath(indexPath) {
if cell.accessoryType == .Checkmark
{
cell.accessoryType = .None
}
else
{
cell.accessoryType = .Checkmark
}
}
}
//----------------------------------------------------------------------------------------
//number of sections for the table
func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 5
}
//----------------------------------------------------------------------------------------
//Calculate the amount of rows
func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return self.section1.count;
}
//----------------------------------------------------------------------------------------
//Cells text label and config
func tableView(tableView: UITableView,cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell
{
let cell:UITableViewCell = UITableViewCell(style:UITableViewCellStyle.Default, reuseIdentifier:"cell")
cell.textLabel!.text = section1[indexPath.row]
cell.textLabel!.numberOfLines = 0
return cell
}
//----------------------------------------------------------------------------------------
@IBAction func resetswitch(sender: UIButton) {
}
//----------------------------------------------------------------------------------------
}
Roger
Swift > 3.0
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) {
cell.accessoryType = .none
}
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) {
cell.accessoryType = .checkmark
}
}
I solved by using two Swift functions: the didSelectRowAtIndexPath and the didDeselectRowAtIndexPath.
override func tableView(tableView: UITableView, didDeselectRowAtIndexPath indexPath: NSIndexPath) {
if let cell = tableView.cellForRowAtIndexPath(indexPath) {
cell.accessoryType = .None
}
}
override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
if let cell = tableView.cellForRowAtIndexPath(indexPath) {
cell.accessoryType = .Checkmark
}
}
To make this work properly, add a line of code to your cellForRowAtIndexPath function to select a row when the table view is drawn on the screen, otherwise the didDeselectRowAtIndexPath will not be called the first time you select another row. Like so:
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("cellData", forIndexPath: indexPath)
if (some condition to initially checkmark a row)
cell.accessoryType = .Checkmark
tableView.selectRowAtIndexPath(indexPath, animated: false, scrollPosition: UITableViewScrollPosition.Bottom)
} else {
cell.accessoryType = .None
}
return cell
}
Try this:
var checked = [Bool]() // Have an array equal to the number of cells in your table
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCellWithIdentifier("cell") as! UITableViewCell
//configure you cell here.
if !checked[indexPath.row] {
cell.accessoryType = .None
} else if checked[indexPath.row] {
cell.accessoryType = .Checkmark
}
return cell
}
func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
if let cell = tableView.cellForRowAtIndexPath(indexPath) {
if cell.accessoryType == .Checkmark {
cell.accessoryType = .None
checked[indexPath.row] = false
} else {
cell.accessoryType = .Checkmark
checked[indexPath.row] = true
}
}
}
To reset all the checkboxes:
func resetChecks() {
for i in 0.. < tableView.numberOfSections {
for j in 0.. < tableView.numberOfRowsInSection(i) {
if let cell = tableView.cellForRowAtIndexPath(NSIndexPath(forRow: j, inSection: i)) {
cell.accessoryType = .None
}
}
}
}
AnupamChugh
Swift 3.0
Using just one function to keep it simple
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
if let cell = tableView.cellForRow(at: indexPath as IndexPath) {
if cell.accessoryType == .checkmark {
cell.accessoryType = .none
} else {
cell.accessoryType = .checkmark
}
}
}
A UITableView keeps selected state for single or multiple selections. So IMO there would need to be a very good reason for keeping an entire parallel state somewhere. If you want to just change the cell's appearance based on select state, do it in the cell.
In your UITableViewCell subclass, override setSelected like so:
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
self.accessoryType = selected ? .checkmark : .none
}
No need to use any table view delegate methods.
Note: You have to call super.setSelected otherwise the cell doesn't keep the selected state correctly.
Swift 3.0
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) {
cell.accessoryType = .checkmark
}
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
if let cell = tableView.cellForRow(at: indexPath) {
cell.accessoryType = .none
}
}
Swift 4.0, all together now:
import UIKit
class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var yourData = ["Cool","Sweet","Awesome"]
var checked = [Bool]()
override func viewDidLoad() {
super.viewDidLoad()
checked = Array(repeating: false, count: yourData.count)
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return searchData.count
}
func tableView(_ tableView: UITableView, cellForRowAt IndexPath: IndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCellWithIdentifier("cell") as! UITableViewCell
//configure you cell here.
if checked[IndexPath.row] == false{
cell.accessoryType = .none
} else if checked[IndexPath.row] {
cell.accessoryType = .checkmark
}
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
if let cell = tableView.cellForRow(at: indexPath as IndexPath) {
if cell.accessoryType == .checkmark {
cell.accessoryType = .none
checked[indexPath.row] = false
} else {
cell.accessoryType = .checkmark
checked[indexPath.row] = true
}
}
}
}
Javed siddique
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
if self.checkedIndex == indexPath.row{
}else{
let cell = tableView.cellForRow(at: indexPath)
cell?.accessoryType = .checkmark
let indexPathh = IndexPath(row: checkedIndex, section: 0)
let UnCheckCell = tableView.cellForRow(at: indexPathh)
UnCheckCell?.accessoryType = .none
checkedIndex = indexPath.row
}
}
Updated In swift 4.2 Every New selection Remove previous Check mark
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print(self.coloursArray[indexPath.row])
self.tableView.cellForRow(at: indexPath)?.accessoryType = .checkmark
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
self.tableView.cellForRow(at: indexPath)?.accessoryType = .none
}
Swift 5.0
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
if let cell = tableView.cellForRow(at: indexPath) {
resetChecks()
cell.accessoryType = .checkmark
}
}
override func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
self.tableView.cellForRow(at: indexPath)?.accessoryType = .none
}
func resetChecks() {
for i in 0..<tableView.numberOfSections {
for j in 0..<tableView.numberOfRows(inSection: i) {
if let cell = tableView.cellForRow(at: IndexPath(row: j, section: i)) {
cell.accessoryType = .none
}
}
}
}
来源：https://stackoverflow.com/questions/30059704/uitableviewcell-checkmark-to-be-toggled-on-and-off-when-tapped