I placed a collectionView in the TableViewCell. I have defined a collectionView in the TableViewCell and I want the page to change when the collectionView cell is selected. I didn't. How can I do it?
When the collectionView cell in the TableViewCell is clicked, I can't change the page, it gives such an error.
2022-11-20 21:32:43.793429+0300 project-1[6546:225929] [Presentation] Attempt to present <project_1.ViewController: 0x138307190> on <project_1.ContentViewController: 0x138306c10> (from <project_1.ContentViewController: 0x138306c10>) whose view is not in the window hierarchy.
TableViewCell
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
//cell
DispatchQueue.main.async {
let vc = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "ContentView") as! ContentViewController
vc.modalPresentationStyle = .overFullScreen
vc.pages = self.userDetails
vc.currentIndex = indexPath.row
let vcc = ViewController()
vc.present(vcc, animated: true, completion: nil)
}
}
ViewController
extension ViewController : UITableViewDataSource , UICollectionViewDelegate{
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
as! TableViewCell
cell.collectionView.tag = indexPath.section
return cell
}
func tableView (_ tableView: UITableView, heightForRowAt indexpath: IndexPath) -> CGFloat{
return 200
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
}
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
}
I tried writing it into func in the Viewcontroller.
i got an error like this
enter image description here
Related
Hello I have two different array data that I need to pass into view controller, my ViewControllers design is the same but the only difference is the data. how can I do that? this is my code
var attendance: [GAttendance]!
var subjectAttendances: [GAttendances]!
// In my A controller
let detailAbsenceVC = DetailAbsenceVC()
detailAbsenceVC.attendance = attendances
self.present(detailAbsenceVC, animated: true)
// In my B controller
let detailVC = DetailAbsenceVC()
detailVC.subjectAttendances = subjectAttendances
self.present(detailVC, animated: true, completion: nil)
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return attendance.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: GStudentAbsenceCell.cellID, for: indexPath) as! GStudentAbsenceCell
let attendanceItem = attendance[indexPath.row]
cell.configureCell(attendance: attendanceItem)
return cell
}
If you do not distinguish whether you came from A or B, you just need one arrayto store the data in the DetailAbsenceVC, lets call it detailData:
class DetailAbsenceVC : UIViewController {
var detailData = [GAttendance]()
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return detailData.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: GStudentAbsenceCell.cellID, for: indexPath) as! GStudentAbsenceCell
let attendanceItem = detailData[indexPath.row]
cell.configureCell(attendance: attendanceItem)
return cell
}
}
Then, in the A/B controller, just set the detailData:
// In my A controller
let detailAbsenceVC = DetailAbsenceVC()
detailAbsenceVC.detailData = attendances
self.present(detailAbsenceVC, animated: true)
// In my B controller
let detailVC = DetailAbsenceVC()
detailVC.detailData = subjectAttendances
self.present(detailVC, animated: true, completion: nil)
I have a CollectionView that is scrolling horizontally. I have custom CollectionViewCells that have inside a TableView with three cells. It looks like this:
[![Here is a example of how it looks][1]][1]
This is the main ViewController where I have the CollectionView
extension ViewController: UICollectionViewDataSource {
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.viewModel.numberOfItems
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell
{
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: ItemCell.reuseIdentifier, for: indexPath) as! ItemCell
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
let selectedItem = self.viewModel.items[indexPath.item]
}
}
And this is the ItemCell code that contains the tableview
class ItemCell: UICollectionViewCell, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var tableView: UITableView!
override func awakeFromNib() {
super.awakeFromNib()
self.tableView.delegate = self
self.tableView.dataSource = self
}
override func layoutSubviews() {
super.layoutSubviews()
self.tableView.allowsMultipleSelection = true
self.tableView.register(UINib(nibName: "DailySelectionViewCell", bundle: nil), forCellReuseIdentifier: DailySelectionViewCell.reuseIdentifier)
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func numberOfSections(in tableView: UITableView) -> Int {
return 3
}
func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat {
return 20
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 60
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: DailySelectionViewCell.reuseIdentifier, for: indexPath) as! DailySelectionViewCell
switch indexPath.section {
case 0:
cell.descriptionLabel.text = "Item1"
case 1:
cell.descriptionLabel.text = "Item2"
default:
cell.descriptionLabel.text = "Item3"
}
return cell
}
func tableView(_ tableView: UITableView, viewForFooterInSection section: Int) -> UIView? {
let view = UIView(frame: CGRect.zero)
view.backgroundColor = UIColor.clear
return view
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
}
}
I want to click on the TableView cells that are inside the CollectionView cells. When I want to click on a TableViewCell, the touches are only registered on the CollectionViewCell and I can't click on any of the tableview cells inside the CollectionViewCell.
By default didSelectRowAt must work.
As an assumption DailySelectionViewCell may contains some views with user interaction, namely subclassed from UIControl: UIButton, UIDatePicker, UISegmentedControl and so on. In this case didSelectRowAt not work and this is correct behavior.
i have an array and i've created a seperate vc for each array item,
tableView.dequeueReusableCell shows wrong vc.
I've read that this is because the cell is reusable and it keeps the data from the previous selected array.
Can you please help me to fix it.
My code is:
import UIKit
class Nicosia: UIViewController, UITableViewDelegate, UITableViewDataSource {
let nicosiaPlaces = ["Famagusta Gate", "Laiki Geitonia", "Ledra Street","Omeriye Hamam","Cyprus Museum","Venetian Walls","The House of Hatjigeorgakis Kornessios","Byzantine Art Museum","Archbishop's Palace","Liberty Monument","The Faneromeni Church","Nicosia International Conference Center"]
var identities = ["Famagusta Gate", "Laiki Geitonia", "Ledra Street","Omeriye Hamam","Cyprus Museum","Venetian Walls","The House of Hatjigeorgakis Kornessios","Byzantine Art Museum","Archbishop's Palace","Liberty Monument","The Faneromeni Church","Nicosia International Conference Center"]
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return nicosiaPlaces.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell")
let city = nicosiaPlaces [indexPath.row]
cell?.textLabel?.text = city
return cell!
}
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
let vcName = identities[indexPath.row]
let viewController = storyboard?.instantiateViewController(withIdentifier: vcName)
self.navigationController?.pushViewController(viewController!, animated: true)
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
}
You mean didDeselectRowAt, not dequeueReusableCell.
And the problem is that you want didSelectRowAt, not didDeselectRowAt.
Replace this
func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath)
with
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
I have implemented a collection view within a UITableViewCell. I want the table section header index or header title inside collectionView(_:cellForItemAt:)
Here is my table view code:
extension ContentCatVCViewController : UITableViewDataSource {
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return categories[section]
}
func numberOfSections(in tableView: UITableView) -> Int {
return categories.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell") as! CategoryRow
print("table row index:: \(indexPath.row)")
return cell
}
func tableView(_ tableView: UITableView, willDisplayHeaderView view:UIView, forSection: Int) {
if let headerTitle = view as? UITableViewHeaderFooterView {
headerTitle.textLabel?.textColor = UIColor.clear
}
}
}
Here is my table cell code:
extension CategoryRow : UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 4
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "videoCell", for: indexPath) as! VideoCell
cell.layer.borderWidth = 1
cell.layer.borderColor = UIColor(red:222/255, green:225/255, blue:227/255, alpha: 1).cgColor
return cell
}
}
How to get the tableView(_:titleForHeaderInSection:) inside collectionView(_:cellForItemAt:) function. Please help.
In cellForRowAt method you are loading CollectionView. Means you are getting IndexPath where you are loading CollectionViews. So indexPath.section will be your header index for each CollectionView.
After following a guide on how to add collectionViews inside a tableViewCell (here) and then I tried to see if I can switch these two cells.
However, when I try to scroll down the collectionview(horizontally) I get an error that the collectionview index goes out of bounds. I tried to see if adding a reload data for each collection view would help with that issue, but it doesn't... Code below:
class BuildTravelPackage: UIViewController, UITableViewDataSource,UITableViewDelegate, UICollectionViewDelegate {
#IBOutlet var optionsTableView: UITableView!
var items = [[PackageOption]]()
override func viewDidLoad() {
super.viewDidLoad()
let longPressRecognizer = UILongPressGestureRecognizer(target: self, action: #selector(self.longPress(longPressGestureRecognizer:)))
self.optionsTableView.addGestureRecognizer(longPressRecognizer)
//load data into cells
}
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
cell.alpha = 0
UIView.animate(withDuration: 1.0) {
cell.alpha = 1.0
}
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 175
}
func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
return true
}
func tableView(_ tableView: UITableView, shouldIndentWhileEditingRowAt indexPath: IndexPath) -> Bool {
return false
}
func tableView(_ tableView: UITableView, editingStyleForRowAt indexPath: IndexPath) -> UITableViewCellEditingStyle {
return .none
}
func tableView(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
let item = items[sourceIndexPath.row]
items.remove(at: sourceIndexPath.row)
items.insert(item, at: destinationIndexPath.row)
optionsTableView.isEditing = !optionsTableView.isEditing
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = optionsTableView.dequeueReusableCell(withIdentifier: "optionCell", for: indexPath) as! PackageOptionTableViewCell
cell.collectionView.delegate = self
cell.collectionView.dataSource = self
cell.collectionView.tag = indexPath.row
cell.collectionView.reloadData()
return cell
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return items.count
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
print("Column:",indexPath.row)
print("Row:",collectionView.tag)
//highlght selected cell and load a new cell with infomation? Or load a uiview with date selection
}
func longPress(longPressGestureRecognizer: UILongPressGestureRecognizer) {
if longPressGestureRecognizer.state == UIGestureRecognizerState.began {
let touchPoint = longPressGestureRecognizer.location(in: self.view)
if let indexPath = optionsTableView.indexPathForRow(at: touchPoint) {
optionsTableView.isEditing = !optionsTableView.isEditing
}
}
}
}
extension BuildTravelPackage:UICollectionViewDataSource {
func numberOfSections(in collectionView: UICollectionView) -> Int {
return 1
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return items[collectionView.tag].count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "singleOptionCell", for: indexPath) as! OptionCollectionViewCell
cell.image.image = items[collectionView.tag][indexPath.row].imageFile
cell.label.text = items[collectionView.tag][indexPath.row].name
return cell
}
}
I think problem is here when you are replacing objects
func tableView(_ tableView: UITableView, moveRowAt sourceIndexPath: IndexPath, to destinationIndexPath: IndexPath) {
let item = items[sourceIndexPath.row]
items.remove(at: sourceIndexPath.row)
items.insert(item, at: destinationIndexPath.row)
optionsTableView.isEditing = !optionsTableView.isEditing
}
try replacing code by
swap(& items[sourceIndexPath.row], & items[destinationIndexPath.row])