**Where's the wrong?
ERROR "SecondViewController does not conform to protocol 'UITableViewDataSource"**
import UIKit
class SecondViewController: UIViewController, UITableViewDataSource, UITableViewDelegate
{
#IBOutlet weak var tableView: UITableView!
var videos:[video] = [video]()
#IBOutlet weak var menuButton: UIBarButtonItem!
override func viewDidLoad() {
super.viewDidLoad()
if self.revealViewController() != nil {
menuButton.target = self.revealViewController()
menuButton.action = #selector(SWRevealViewController.revealToggle(_:))
self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
let model = videoModel()
self.videos = videoModel().getVideos()
self.tableView.dataSource = self
self.tableView.delegate = self
}
func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return videos.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "BasicCell", for: indexPath)
let videoTitle = videos[indexPath.row].videoTitle
//customize the cell
cell.textLabel?.text = videoTitle
return cell
}
}
}
Perhaps, You did not connect UIViewController and UITableView.
In Stroyboard,
Place your mouse over UITableView, Drag to UIViewController using right button. And then you can check outlets options, datasource and delegate. Check these.
Related
I already make an array to access the picture.. Can someone help? thanks
Here is my code:
import UIKit
class MainMenuViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
let labeltitle = ["Acme De la Vie Tee", "Anti Social Social Club Black Hoodie", "CDG Play Gold Black Tee"]
let labelprice = [("RM 240"), ("RM 305"), ("RM 418")]
let myImage = [UIImage(named: "adlv1"), UIImage(named: "assc"), UIImage(named: "cdg1")]
#IBOutlet weak var tableView: UITableView!
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 labeltitle.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! MainMenuTableViewCell
cell.label11?.text = labeltitle[indexPath.row]
cell.label2?.text = labelprice[indexPath.row]
cell.myImage.image = self.myImage[indexPath.row]
return cell
}
}
Here is my code for MainMenuTableViewCell
import UIKit
class MainMenuTableViewCell: UITableViewCell {
#IBOutlet weak var label11: UILabel!
#IBOutlet weak var label3: UILabel!
#IBOutlet weak var label2: UILabel!
#IBOutlet weak var myImage: UIImageView!
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
you need to register your tableviewcell in viewDidLoad
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
tableView.register(MainMenuTableViewCell.self, forCellReuseIdentifier: "cell")
}
Apple Documentation
More Info
Did u add constraint ?
Select to viewController and do reset the suggested constraint and im sure it will be solved
cell.myImage.image = self.myImage[indexPath.row]
try to change your image Array name
I have a very strange problem in my Swift project. I use UIswitch in my dynamic cells in my one-section uitable. Whenever I click on the 6th switch, the first one changes its state with it and vice versa. The .valueChanged function only works for the one that is clicked (correct behaviour).
I cannot figure out why the switches change state together.
This is the code for table cells:
import UIKit
class RoutineTableViewCell: UITableViewCell {
#IBOutlet weak var selectionSwitch: UISwitch!
#IBOutlet weak var title: UILabel!
#IBOutlet weak var previewImage: UIImageView!
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
}
}
and here is the code in my table view controller:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let cell = tableView.dequeueReusableCell(withIdentifier: RoutineTableReuseIdentifier, for: indexPath) as? RoutineTableViewCell
else{
return RoutineTableViewCell()
}
let exercise = section!.exercises[indexPath.row]
cell.title.text = exercise.title
cell.previewImage.image = UIImage(named: (exercise.gifName + ".gif"))
cell.selectionSwitch.addTarget(self, action: #selector(self.addRemoveExercise(_:)), for: .valueChanged)
return cell
}
#IBAction func addRemoveExercise(_ sender: UISwitch!) {
let buttonPosition:CGPoint = sender.convert(CGPoint.zero, to:self.tableView)
let indexPath = self.tableView.indexPathForRow(at: buttonPosition)
if(sender.isOn){
customizedSection?.exercises[indexPath!.row] = section!.exercises[indexPath!.row]
}
else{
customizedSection?.exercises[indexPath!.row] = ExerciseModel()
}
}
Your tableView:
import UIKit
class TableViewController: UITableViewController,switchValues {
func changed(_ cell: UITableViewCell, _ mySwitch: UISwitch) {
let index = tableView.indexPath(for: cell)
switchStates[(index?.row)!] = mySwitch.isOn
tableView.reloadData()
}
var switchStates : [Bool] = [false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false,false]
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return switchStates.count
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! MyTableViewCell
cell.mySwitch.isOn = switchStates[indexPath.row]
cell.delegate = self
return cell
}
Your cell:
import UIKit
protocol switchValues {
func changed(_ cell:UITableViewCell,_ mySwitch:UISwitch)
}
class MyTableViewCell: UITableViewCell {
#IBOutlet weak var mySwitch: UISwitch!
var delegate:switchValues!
#IBAction func valueChanged(_ sender: UISwitch) {
delegate.changed(self, mySwitch)
}
}
I have a UITableView and my prototype cell consists of a label and a TextField. I also have a class MyClass that contains functions func1, func2, fun3, ... I have several ViewControllers that use the same tableViewCell prototype. Each viewController will have an instance of MyClass, called inst1, inst2, and inst3. When I enter text into FirstViewController's TableView I want each row to call a function from the instance of MyClass that corresponds to the row.
So when I enter text into row 1 on the FirstViewController I want to pass the data entered into the textField into func1 of inst1. When data is entered into row 2 of FirstViewController I want the data in the textfield to be passed into func2 of inst1. And so on and so forth down the rows.
I am very new to this and would really appreciate some help figuring out how to do this. Let me know if that doesn't make sense and I can try to rephrase it. I really need help with this. Thanks in advance!
*Updated question to show my code
Below is my Code:
FirstViewController.swift
extension FirstViewController: MyCellDelegate {
func MyCell(_ cell: UITableViewCell, didEnterText text: String) {
if let indexPath = tableView.indexPath(for: cell) {
if (indexPath.hashValue == 0) {
inst1.func1(one: text)
}
if (indexPath.hashValue == 1) {
inst1.func2(two: text)
}
}
totalText.text = inst1.getMyTotal()
}
}
import UIKit
class FirstViewController: UIViewController, UITableViewDataSource, UITableViewDelegate {
let inst1 = MyClass()
#IBOutlet weak var totalText: UILabel!
#IBOutlet weak var tableView: UITableView!
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 11
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "myTableCell") as! TableViewCell
let text = cell.cellData[indexPath.row]
cell.myTextField.tag = indexPath.row
cell.delegate = self
cell.myLabel.text = text
cell.myTextField.placeholder = text
return cell
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func viewDidLoad() {
super.viewDidLoad()
tableView.dataSource = self
tableView.delegate = self
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
TableViewCell.swift
import UIKit
protocol MyCellDelegate: class {
func MyCell(_ cell: UITableViewCell, didEnterText text: String)
}
class TableViewCell: UITableViewCell {
weak var delegate: MyCellDelegate?
public var cellData: [String] = ["1","2","3","4","5","6","7","8","9","10","11"]
#IBOutlet weak var myLabel: UILabel!
#IBOutlet weak var myTextField: UITextField!
override func awakeFromNib() {
super.awakeFromNib()
}
override func setSelected(_ selected: Bool, animated: Bool) {
}
}
When I set a breakpoint in the FirstViewController extension it never runs that code.
In WillDisplayCell add the tag to the UITextField. Also create a protocol to notify the Corrosponding viewController and set itself as the delegate here.
func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
let cell = tableView.dequeueReusableCell(withIdentifier: "reuseIdentifier")
cell.textField.tag = indexPath.row
cell.delegate = self
}
The protocol in your cell class will look something like this
protocol MyCellDelegate: class {
func MyCell(_ cell: UITableViewCell, didEnterText text: String)
}
class MyCell: UITableViewCell, UITextFieldDelegate {
weak var delegate: MyCellDelegate?
override fun awakeFromNib() {
super.awakeFromNib()
textField.delegate = self
}
//All the remaining code goes here
func textFieldShouldReturn(_ textField: UITextField) -> Bool { //delegate method
textField.resignFirstResponder()
delegate?.MyCell(self, didEnterText: textField.text! )
return true
}
}
Now again in your FirstViewController which has conformed to be its delegate do this
extension FirstViewController: MyCellDelegate {
func MyCell(_ cell: UITableViewCell, didEnterText text: String) {
if let indexPath = tableView.indexPathForCell(cell) {
// call whichever method you want to call based on index path
}
}
I am having a weird issue where for some reason my UITableView is not being reloading after performing a search. The console prints out the correctly filtered data, but the table simply doesn't change. I have never encountered this issue, so I first attempted the solutions which naturally came to mind:
Tried tableView.reloadData() in the Main Queue
Quit Xcode, clean build, reinstall
Cleared out the derived data dir
I have found several similar issue in SO, but all of the solutions I've seen are things I've tried, mainly reloading tableview in main queue.
Hoping maybe I just simply have an issue in my code or something I'm missing.
I am running Xcode 8.3.3
import UIKit
class CategoriesViewController: UIViewController {
var isFiltering = false
var location = Location()
#IBOutlet weak var tableView: UITableView!
#IBOutlet weak var searchBar: UISearchBar!
var categoriesSearchResults = [Category]()
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
tableView.allowsSelection = true
tableView.keyboardDismissMode = .onDrag
let nib = UINib(nibName: "CategoryTableViewCell", bundle: nil)
self.tableView.register(nib, forCellReuseIdentifier:"CategoryTableViewCell");
searchBar.returnKeyType = UIReturnKeyType.done
searchBar.autocapitalizationType = .none
searchBar.delegate = self
}
extension CategoriesViewController : UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 60
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
print("HI")
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if isFiltering {
return self.categoriesSearchResults.count
}
return self.location.categories.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell()
if let cell = self.tableView.dequeueReusableCell(withIdentifier: "CategoryTableViewCell", for: indexPath) as? CategoryTableViewCell {
var category: Category
if isFiltering {
category = self.categoriesSearchResults[indexPath.row]
} else {
category = self.location.categories[indexPath.row]
}
cell.name.text = category.name
cell.status.textColor = UIColor.lightGray
cell.status.text = "Not Verified"
}
return cell
}
}
extension CategoriesViewController : UISearchBarDelegate {
func searchBarIsEmpty() -> Bool{
return self.searchBar.text?.isEmpty ?? true
}
func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
self.isFiltering = true
self.categoriesSearchResults.removeAll()
tableView.reloadData()
self.view.endEditing(true)
}
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
if searchBarIsEmpty() {
self.view.endEditing(true)
self.isFiltering = false
} else {
self.isFiltering = true
self.categoriesSearchResults = self.location.categories.filter({ (category: Category) -> Bool in
return category.name.lowercased().contains(searchText.lowercased())
})
}
tableView.reloadData()
}
}
and my custom table view cell:
import UIKit
class CategoryTableViewCell: UITableViewCell {
#IBOutlet weak var name: UILabel!
#IBOutlet weak var status: UILabel!
override func awakeFromNib() {
super.awakeFromNib()
}
override func prepareForReuse() {
super.prepareForReuse()
self.name.text = ""
self.status.text = ""
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
Thank you in advance.
EDIT: Might also be worth mentioning, when I am actively searching, the function tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) is not called??
The scope of if let nests in its scope. In your code you are always returning let cell = UITableViewCell(). Try returning it inside the if let :
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell()
if let cell = self.tableView.dequeueReusableCell(withIdentifier: "CategoryTableViewCell", for: indexPath) as? CategoryTableViewCell {
var category: Category
if isFiltering {
category = self.categoriesSearchResults[indexPath.row]
} else {
category = self.location.categories[indexPath.row]
}
cell.name.text = category.name
cell.status.textColor = UIColor.lightGray
cell.status.text = "Not Verified"
/// RETURN CELL HERE
return cell
}
return cell
}
I am trying to set an address autocomplete in my view controller so users do not have to type the whole address and instead select it from below the search textfield. This is how my controller looks like:
import Foundation
import UIKit
import MapKit
extension AddNewAddressViewController: MKLocalSearchCompleterDelegate {
func completerDidUpdateResults(_ completer: MKLocalSearchCompleter) {
searchResults = completer.results
searchResultsTableView.reloadData()
}
func completer(_ completer: MKLocalSearchCompleter, didFailWithError error: Error) {
// handle error
}
}
class AddNewAddressViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var searchCompleter = MKLocalSearchCompleter()
var searchResults = [MKLocalSearchCompletion]()
override func viewDidLoad() {
searchCompleter.delegate = self
searchCompleter.queryFragment = addressSearch.text!
searchResultsTableView.dataSource = self
super.viewDidLoad()
}
#IBOutlet weak var addressSearch: UITextField!
#IBOutlet weak var searchResultsTableView: UITableView!
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
let searchResultsCount = searchResults.count
return searchResultsCount
}
func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let searchResult = searchResults[indexPath.row]
let cell = UITableViewCell(style: .subtitle, reuseIdentifier: nil)
cell.textLabel?.text = searchResult.title
cell.detailTextLabel?.text = searchResult.subtitle
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
}
#IBAction func defaultAddressButton(_ sender: Any) {
}
#IBAction func addAddressButton(_ sender: Any) {
}
}
I am getting an error that says:
Type AddNewAddressViewController does not conform to protocol 'UITableViewDataSource'
What am I missing?
Thanks in advance.
You left out the underscore for first parameter of the cellForRowAtIndexPath declaration, which is required under swift 3.0:
func tableView(_ tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
[etc.]
As a result, you don't have a required function matching the expected signature.