New to IOS development and am having trouble with handling cell selection on a table. Whenever I select, the method is not getting called below - any idea why?
My project structure is: View Controller -> View -> Table View
The below code demonstrates the method calls. The others get called no problem! I know touch is working as pull down successfully refreshes and on clicking a cell it does become highlighted.
import UIKit class ViewController: UIViewController, UITableViewDelegate { let blah = ["blah1"] //How many sections are in the table? func numberOfSectionsInTableView(tableView: UITableView) -> Int { return 1 } //How many rows? (returns and int) func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int { return blah.count } //table contents for each cell? //Each time this is called it'll return the next row and thus build a table... func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell { print("Populating each cell of table view!\n") tableView.rowHeight = 80.0 var cell = UITableViewCell() var(a) = blah[indexPath.row] var image : UIImage = UIImage(named: a)! cell.imageView.image = image return cell } //Code Cell Selected func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath){ println("You selected cell #\(indexPath.row)!") } func tableView(tableView: UITableViewDelegate, didDeselectRowAtIndexPath indexPath: NSIndexPath) { print("wananananaanan" ) println("You deselected cell #\(indexPath.row)!") } override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } }
There are two main base ways to populate a tableview. The more popular is through Interface Building, using a prototype cell UI object. The other is strictly through code when you don't need a prototype cell from Interface Builder.
A view that presents data using rows in a single column.
tableView(_:didSelectRowAt:)Tells the delegate a row is selected.
Methods for managing selections, configuring section headers and footers, deleting and reordering cells, and performing other actions in a table view.
Everybody is mentioning to set dataSource and delegate of the tableView. But after setting also not working fine then sometimes it may happen because of none or disable selection of table view.
To enable it Go to storyboard -> Select tableView -> click on the attribute inspector ->go to selector -> Select selection as single selection (or multiple selection according to the requirements.)
Please find attached screenshot for your suitability.
You have to set an @IBOutlet
to the tableView
in you ViewController
and set as it's delegate
and dataSource
to you can see the data an respond to changes in the tableView
.
Something like this :
override func viewDidLoad() { super.viewDidLoad() self.tableView.delegate = self self.tableView.dataSource = self }
And implements the UITableViewDataSource
protocol too.
Or you can too in the Interface Builder set the ViewController
as it's delegate and dataSource
(more easy to do I think) and avoid to set manually in code like above. Is up to you.
I hope this help you.
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