I am trying to get the text of the UITableViewCell in my
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let selectedCell = tableView.cellForRow(at: indexPath)
let cellLabel = selectedCell!.textLabel!.text
print(cellLabel)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let musicCell = music[indexPath.row]
let cell = tableView.dequeueReusableCell(withIdentifier: "MusicCell") as! MusicCell
cell.setMusic(music: musicCell)
return cell
}
but its returning nill.
MusicListView is my UIViewController and I have extended it
extension MusicListView: UITableViewDataSource, UITableViewDelegate {
}
Any help will be greatly appreciated :)
So as suggested by others I accessed the required data from the data model.
I wrote a little function to access the data model
func findMusic(id : Int) -> String {
currentTitle = songList[id].title!
return currentTitle
}
and called it everytime a user tapped on a cell
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
currentTitle = findMusic(id: indexPath.row)
playSong(title: currentTitle)
}
Related
I can't determine the length of Cell TableView automatically
in Swift ,UIKit
I tried all the ways
Either it gives me a fixed length or the values in the Cell tableview are not shown
These are Table View codes
extension DetilesVC : UITableViewDelegate , UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return arrQ.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! CellDetiles
let date = arrQ[indexPath.row]
cell.arrQR = date
return cell
}
func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableView.automaticDimension
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return UITableView.automaticDimension
}
}
If I don't put this value here like this
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 900
}
Table View shouts like this
My Cell TableView
var arrQR : QRModel? {
didSet {
SetupQR()
}
}
func SetupQR () {
qusLabel.text = arrQR?.sub
detailLabel.text = arrQR?.detiles
}
In cellForRowAt put following code to show values in cells -
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! CellDetiles
let date = arrQ[indexPath.row]
cell.textLabel?.text = date
return cell
}
I have this table view, that populates through Core Data. Everything looks fine, even when scrolling, until I press and hold any row - then that row distorts like in the second image below.
(source: staticflickr.com)
(source: staticflickr.com)
Here's the code to display the tableview
override func viewDidLoad() {
super.viewDidLoad()
animateBackground(colors)
tableView.delegate = self
tableView.dataSource = self
tableView.fetchData(fetchedResultsController as! NSFetchedResultsController<NSFetchRequestResult>)
self.tableView.tableFooterView = UIView(frame: .zero)
}
func numberOfSections(in tableView: UITableView) -> Int {
guard fetchedResultsController.sections?.count != nil else { return 0 }
return fetchedResultsController.sections!.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
guard fetchedResultsController.sections != nil else { return 0 }
let data = fetchedResultsController.sections![section]
return data.numberOfObjects
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "SkillCell", for: indexPath) as! SkillCell
configureCell(cell: cell, indexPath: indexPath as NSIndexPath)
return cell
}
func configureCell(cell: SkillCell, indexPath: NSIndexPath) {
let skill = fetchedResultsController.object(at: indexPath as IndexPath)
cell.skill = skill
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) { }
}
From the code above, everything looks normal, yet this distortion occurs. Please help me to see why and how to stop it happening.
As the comment suggests, it's just a visual effect called selectionStyle of your UITableViewCell. Inside your cellForRowAt indexPath method, you can disable it like:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "myCell") as! MyCell
cell.selectionStyle = .none // this removes the effect.
return cell
}
yes you should set tableView selection style to none.
1.Select the tableview in storyboard in the right panel set selection style to none.
or
2.in your tableview cellforrow method set
tableView.selectionstyle = none
I have a UITableView.
I can select multiple cells make them highlighted.
But, whenever I reload App, the selected and highlighted state disappears.
I think I need to put some codes in 'viewDidAppear' and 'didSelectRowAt'. But I don't have any idea of specific codes.
What do I have to put in this syntax?
class ViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
tableView.reloadData()
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
}
}
I recommend u add to dataSource item field selected, and in method cellForRowAtindexPath configure by your dataSource items.
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let cellClass = (self.cellClass(for: indexPath) ?? self.cellClasses.first) else { return UITableViewCell() }
let cell = tableView.dequeueReusableCell(withIdentifier: cellClass.identifier, for: indexPath)
if let configurable = cell as? ConfigurableComponent, let object = self.object(at: indexPath) {
let item = self.dataSource[indexPath.row]
configurable.selected = item.selected
}
return cell
}
When call didSelectRowAt, just take item and change selected field, sample:
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let item = self.dataSource[indexPath.row]
item.selected = !item.selected
tableView.reloadData()
}
I have custom cells of UITableView which consist of UIImage and textLabel. When I select the editing mod, the textLabel shows the following image;
I want to move it to left. I tried all of things to do but it didn't work.
Please let me know.
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return allRows.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
let cell = tableView.dequeueReusableCell(withIdentifier: "editCell", for: indexPath) as! CustomTableView
cell.textLabel?.text = self.allRows[indexPath.row].bname
cell.textLabel?.textAlignment = .left
let image:UIImage = UIImage(named: "group")!
cell.imageView!.image = image
return cell
}
func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCellEditingStyle{
return .delete
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath){
if editingStyle == .delete{
self.allRows.remove(at: indexPath.row)
tableView.deleteRows(at: [indexPath as IndexPath], with: .fade)
}
}
#objc func leftEditButtonPressed(_ sender: UIButton) {
self.tableView!.isEditing = true
self.tableView?.setEditing(true, animated: true)
}
look at this, I hope it helps you:
swipe left/right in tableViewCell
func tableView(_ tableView: UITableView, leadingSwipeActionsConfigurationForRowAt indexPath: IndexPath) -> UISwipeActionsConfiguration? {
let closeAction = UIContextualAction(style: .normal, title: "Close", handler: { (ac:UIContextualAction, view:UIView, success:(Bool) -> Void) in
print("OK, marked as Closed")
success(true)
})
closeAction.image = UIImage(named: "tick")
closeAction.backgroundColor = .purple
return UISwipeActionsConfiguration(actions: [closeAction])
}
Try using the following code:
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.dataArr.count
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 80.0
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let cell = tableView.dequeueReusableCell(withIdentifier: "TestTableCell") as? TestTableCell else {
return UITableViewCell()
}
cell.customImageView.image = #imageLiteral(resourceName: "ic_audio")
cell.customTitleLabel.text = self.dataArr[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
return true
}
func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCellEditingStyle {
return UITableViewCellEditingStyle.delete
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
print("delete at \(indexPath.row)")
}
}
Here is the output for this code:
Note: You can change the editing action in editingStyleForRowAt method and for performing the action you need to write the logic in commit editingStyle method.
Hope this help you!
I suggest you to create new label in that UITableViewCell and connect that label to custom UITableViewCell class ! then you are free to do anything !
Swift 4 :
Create a new class which is subclass of UITableViewCell !
In your storyboard in right menu which called Utilities in toolbar of Utilities go to the Identity inspector defince your cell class to your new UITableViewCell class
Drag and drop UILabel from Object library into your cell
now using drag and drop connect that label to your UITableViewCell class then create an Outlet
Perfect !
now use myLabel instead of textLabel ;)
dont forget to cast your cell as! YourCustomCellClass
Good Luck ;)
cant call func for viewdidload
CODE
Use of unresolved identifier 'getSegue'
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 10
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! konuCell
func getSegue() {
cell.dersAdiLabel.text = gelenDersAdi
}
return cell
}
Basically, You written your function in the cellForRowAtIndexPath this will call nested Function but you have to write this at class scope.
In short writegetSegue() function at class level scope just like that:
func getSegue() {
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! konuCell
cell.dersAdiLabel.text = gelenDersAdi
return cell
}
To access getSegue, move it outside the scope of tableView(_:cellForRowAt:), e.g.:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
[...]
}
func getSegue() {
[...]
}
...but since getSegue would require a cell that it can modify, this is not going to work the way you want. I'd suggest keeping the code in cellForRowAt and reload the table view in viewDidLoad.