I'd like to make it so that I can reorder a section in the app and also delete the section by swiping left on the section header (not on the row). Currently I have managed to delete and reorder the row however this is not what I want. I have looked into the documentation on the Apple website and noticed that there is a function (move section) and (delete section), however I do not know how to implement these functions in my code and can find no examples on the Internet on how to do so.
Any help would be greatly appreciated. Many thanks!
Swipe left to delete.
"Edit"
import UIKit
class TableViewController: UITableViewController {
var data = [String]()
#IBOutlet weak var editButton: UIBarButtonItem!
#IBAction func editAction(_ sender: UIBarButtonItem) {
self.tableView.isEditing = !self.tableView.isEditing
switch tableView.isEditing {
case true:
editButton.title = "Done"
default:
editButton.title = "Edit"
}
}
override func viewDidLoad() {
super.viewDidLoad()
data = ["Phone", "Pen", "Pencil"]
// Uncomment the following line to preserve selection between presentations
// self.clearsSelectionOnViewWillAppear = false
// Uncomment the following line to display an Edit button in the navigation bar for this view controller.
// self.navigationItem.rightBarButtonItem = self.editButtonItem
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
// #warning Incomplete implementation, return the number of sections
return data.count
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of rows
return 1
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell2", for: indexPath)
return cell
}
override func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell1") as! TitleTableViewCell
cell.titleLabel.text = data[section]
return cell
}
override func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == UITableViewCellEditingStyle.delete
{
data.remove(at: indexPath.row)
tableView.reloadData()
}
}
override func tableView(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
let movedObjTemp = data[sourceIndexPath.row]
data.remove(at: sourceIndexPath.row)
data.insert(movedObjTemp, at: destinationIndexPath.row)
}
}
Related
There is a tableview cell and there is a more button which is located on the tableview not in the cell so I want that when the project run it show only five user data in the tableview cell and other user data is show when the user click on the more button(which is located out side the cell) how do I achieved this?
Thanks for help
You can find the prototype cell image
//Mark:TableViewDelegate
extension MembersViewController:UITableViewDelegate,UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return imgarray.count
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tblView.dequeueReusableCell(withIdentifier: "membTableCell", for: indexPath) as! membTableCell
cell.profiletabImg.image = imgarray[indexPath.row]
cell.namelbl.text = names[indexPath.row]
cell.positionlbl.text = "Ceo of code with color"
return cell
}
func tableView(_ tableView: UITableView, heightForHeaderInSection section: Int) -> CGFloat {
return 40
}
#IBAction func morebutton(sender:UIButton){
}
}
The tableview expands automatically if you add data to the array and call the tableview.reloadData() function.
From the Apple's Doc -
"Call this method to reload all the data that is used to construct the table, including cells, section headers and footers, index arrays, and so on. For efficiency, the table view redisplays only those rows that are visible. It adjusts offsets if the table shrinks as a result of the reload. The table view’s delegate or data source calls this method when it wants the table view to completely reload its data. It should not be called in the methods that insert or delete rows, especially within an animation block implemented with calls to beginUpdates() and endUpdates()."
#IBAction func moreBtnPressed(_ sender: Any) {
tableviewArray.append("Append your array with remaining items")
tableview.reloadData()
}
Return 5 in numberOfRowsInSection method if more button is not tapped.
When more button is tapped reload the tableview and return imgarray.count in numberOfRowsInSection method.
class TableViewController: UITableViewController {
var dataArr = [String]()
var expanded = false
override func viewDidLoad() {
super.viewDidLoad()
dataArr = (1..<25).map({ String($0) })
self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "\(dataArr.count - 5) more", style: .plain, target: self, action: #selector(morebutton(_:)))
}
#objc func morebutton(_ sender: UIBarButtonItem) {
self.navigationItem.rightBarButtonItem = nil
expanded = true
tableView.reloadData()
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if !expanded && !dataArr.isEmpty {
return 5
} else {
return dataArr.count
}
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "reuseIdentifier") ?? UITableViewCell(style: .default, reuseIdentifier: "reuseIdentifier")
cell.textLabel?.text = dataArr[indexPath.row]
return cell
}
}
I have two view controller with tableviewcell and in both of them I can add items.
What I want to implement is that when I add items in the first tableviewcell lets say I add (item one , item two) and press on (item one).
I want to sugue to the second tableviewcell and add data.
BUT I want the data in the second tableviewcell to save separately,
that means, now if I press on (item one) I should see the data that I added
but if I press on (item two) it should be empty and I can add data later.
I have saved the data for the two tableviewcell in coredata.
I don't use segues or coredata in this solution, but the solution will fix what you need to some extent at least.
class vc1: UIViewController, UITableViewDelegate, UITableViewDataSource {
let tableView = UITableView()
let options: [Int] = [1,2]
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return options.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
return UITableViewCell()
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let vc = vc2()
//Not sure where to put the setup to be honest
//option 1:
vc.setupTableView(forCell: indexPath.item)
present(vc, animated: true) {
//option 2:
vc.setupTableView(forCell: indexPath.item)
}
}
}
class vc2: UIViewController, UITableViewDelegate, UITableViewDataSource {
let tableView = UITableView()
var selectedCell: Int!
//Having an nested array in an array will solve this custom "page" you are looking for
let results: [[String]] = [["test1", "test2"], ["test3", "test4"]]
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
}
func setupTableView(forCell cell: Int) {
selectedCell = cell
tableView.reloadData()
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return results[selectedCell].count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell()
cell.textLabel = results[selectedCell][indexPath.item]
return UITableViewCell()
}
}
I am using a UIViewController and a Table View/Table View Cell (extending to delegate/datasource). Whenever a cell is clicked from MessageController, it is supposed to be directed into another View Controller, called ChatController. Even though I am using didSelectRowAt and adding a segue with identifier, it does not switch to the ChatController.
import UIKit
class MessagesController: UIViewController, UITableViewDataSource, UITableViewDelegate {
var myIndex = 0;
#IBOutlet weak var tableView: UITableView!
var tableData: [MModel] = []
override func viewDidLoad() {
super.viewDidLoad()
tableView.dataSource = self
MData.getData { (data) in
self.tableData = data
self.tableView.reloadData()
}
func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return tableData.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "MessageCell") as! MessagesCell
cell.setup(model: tableData[indexPath.row])
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 375
}
//clicking on cell
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
performSegue(withIdentifier: "segue", sender: nil)
}
}
The problematic line is as follows:
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
performSegue(withIdentifier: "segue", sender: nil)
}
You must set the delegate also in viewDidLoad
self.tableView.delegate = self
You have not set the delegate to the tableview.
Set it as:
aftertableView.dataSource = self
tableView.delegate = self
my problem had to do with having a GestureRecognizer in my viewDidLoad(). after so many hours of troubleshooting i realize that what was breaking the code was that 'hide keyboard' code of GestureRecognizer.
This is a weird (but should be simple) one. I am simply trying to tap a custom UITableViewCell and trigger a segue to go to another ViewController. didSelectRowAt indexPath does not trigger when the cell is tapped, but it oddly enough does when the cell is swiped from right to left or left to right.
My didSelectRowAt indexPath:
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("You selected cell number: \(indexPath.row)!")
self.performSegue(withIdentifier: "mySegue", sender: self)
}
(as suggested here)
My ViewController:
import UIKit
class myViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UIPickerViewDelegate {
var myData = NSDictionary()
override func viewDidLoad() {
super.viewDidLoad()
fetchMyData()
self.tableView.delegate = self
self.tableView.dataSource = self
self.tableView.rowHeight = 100
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func fetchMyData() {
// ... fetches my data
}
////////////////////////////////////////////////
//Table view data source
//set number of sections in table
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
//set number of rows in table
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return myData.count
}
//delegate information to cells in table rows
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
print("running tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell...")
// Dequeue cell
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! myCustomCell
cell.cellAmount!.text = "Hello World"
cell.cellTextField2!.text = "Some info"
cell.cellTextField3!.text = "Some other info"
cell.backgroundCardView.backgroundColor = UIColor.red
cell.backgroundCardView.layer.cornerRadius = 8.0
cell.backgroundCardView.layer.masksToBounds = false
cell.backgroundCardView.layer.shadowColor = UIColor.black.withAlphaComponent(0.9).cgColor
cell.backgroundCardView.layer.shadowOffset = CGSize(width: 0, height: 0)
cell.backgroundCardView.layer.shadowOpacity = 0.9
print("finished tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell...")
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("You selected cell number: \(indexPath.row)!")
self.performSegue(withIdentifier: "mySegue", sender: self)
}
// func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
// let delete = UITableViewRowAction(style: .destructive, title: "Delete") { (action, indexPath) in
// // delete item at indexPath
// }
// let share = UITableViewRowAction(style: .normal, title: "Disable") { (action, indexPath) in
// // share item at indexPath
// }
//
// share.backgroundColor = UIColor.blue
//
// return [delete, share]
// }
func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
return []
}
// Reload the table data when a change is made
// func controllerDidChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>) {
// self.tableView.reloadData()
// }
/*
// Override to support conditional editing of the table view.
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// Return false if you do not want the specified item to be editable.
return true
}
*/
/*
// Override to support rearranging the table view.
override func tableView(tableView: UITableView, moveRowAtIndexPath fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {
}
*/
/*
// Override to support conditional rearranging of the table view.
override func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// Return false if you do not want the item to be re-orderable.
return true
}
*/
//Table view data source (end)
////////////////////////////////////////////////
}
I have already tried the following as well:
-didSelectRowAtIndexPath: not being called
How to detect Cell selection in UITableView - Swift
Push segue from UITableViewCell to ViewController in Swift
How to tap cell's buttons in UITableViewCell without actionning the cell's segue
is it possible to segue from a UITableViewCell on a UIView to another view
UITableView didSelectRowAt is not called iOS 10, but works for 9.3.5
The UITableViewCell does have UIView and multiple UITextFields, so I did make sure that User Interaction Enabled is unchecked for the UIView and UITextFields.
EDIT: I have also looked in the debugger navigator and can see that the CPU usage percentage increases when I tap a cell (). Maybe there is a way to step deeper and see why that tap doesn't then cause the didSelectRowAt indexPath to be triggered..?
Does anyone know what could possibly be causing didSelectRowAt indexPath to not be triggered when the cell is tapped?
I faced the same issue and found an answer that was applicable for me here. I had this code for keyboard dismiss in viewWillAppear:
self.view.addGestureRecognizer(UITapGestureRecognizer(target: self.view, action: #selector(UIView.endEditing(_:))))
After commenting this line tapping started to work! But now I will have to find better way for keyboard dismiss. :) Kindly check your exstensions, probably you used similar solution for keyboard dismiss.
I have a UITableView that is supposed to have items in sections but only the first section (Science) in the array is appearing and I'm not sure what's wrong with it. It should be displaying both sections.
My code:
import UIKit
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate{
#IBOutlet weak var tableView: UITableView!
var checked = [Bool]()
let section = ["Science", "Math"]
let items = [["Physics", "Biology", "Chemistry"], ["Algebra I", "Algebra II", "Statistics"]]
override func viewDidLoad(){
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
self.tableView.allowsMultipleSelection = true
}
override func didReceiveMemoryWarning(){
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
return self.items[section].count
}
func numberOfSectionsInTableView(tableView: UITableView) -> Int{
// #warning Incomplete implementation, return the number of sections
return self.section.count
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String?{
return self.section[section]
}
//All before.
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
cell.textLabel?.text = self.items[indexPath.section][indexPath.row]
//MARK: -Checkmark and save support.
cell.accessoryType = cell.isSelected ? .checkmark : .none
cell.selectionStyle = .none // to prevent cells from being "highlighted"
return cell
}
//MARK: - Checkmark and save functions.
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.cellForRow(at: indexPath)?.accessoryType = .checkmark
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
tableView.cellForRow(at: indexPath)?.accessoryType = .none
}
//MARK: - Sections
}
You made a mistake, wrong method. Let change numberOfSectionsInTableView(tableView:) to:
func numberOfSections(in tableView: UITableView) -> Int {
return self.section.count
}
In ViewDidLoad :
tableView.delegate = self
tableView.dataSource = self