Passing data into UITableView - swift

Question

I am new to swift and have been experimenting with passing data between view controllers. I have been attempting to pass data from a view controller into a UITableViewCell, However once run my code has no effect.
DetailViewController
(passes data to the libraryViewController)
func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
let DestViewController: LibraryMovieViewController = segue.destination as! LibraryMovieViewController
DestViewController.movieTitle = movieTitle
DestViewController.movieRelease = movieReleaseDate
}
}
UITableViewCell
class MovieSearchTableViewCell: UITableViewCell {
#IBOutlet weak var titleLabel: UILabel!
#IBOutlet weak var posterView: UIImageView!
#IBOutlet weak var overviewLabel: UILabel!
}
LibraryViewController
struct libMovie {
//let mainImage: UIImage
let title: String
let release: String
}
class LibraryMovieViewController: UIViewController {
#IBOutlet weak var tableView: UITableView!
var dataSource: [libMovie] = []
var movieTitle: String!
var movieRelease: String!
override func viewDidLoad() {
super.viewDidLoad()
tableView.dataSource = self
tableView.delegate = self
// Do any additional setup after loading the view.
loadDataSource()
}
func loadDataSource(){
// dataSource.append(libMovie(title: " \(movieTitle)", release: " \(movieRelease)"))
}
}
extension LibraryMovieViewController: UITableViewDataSource, UITableViewDelegate{
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 115
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return dataSource.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let movieCell = tableView.dequeueReusableCell(withIdentifier: "libCell", for: indexPath) as? LibraryMovieTableViewCell else {
return UITableViewCell()
}
let libMovie = dataSource[indexPath.row]
movieCell.cellTitleLabel.text = "Movie Title: \(movieTitle)"
movieCell.cellReleaseLabel.text = "Release Date: \(movieRelease)"
return movieCell
}
}
I would expect that when the app is run that movieTitle and movieReleaseDate are passed from the detail view controller and input into the library table cell, this is initiated by tapping a button on the detail view controller.
However this seems to have no affect on the program or simply returns blank cells.
No errors are reported in console nor does the app crash

Answer 1

In prepareForSegue you've passed data to movieTitle and movieRelease, while you're using dataSource to inflate data on tableView.
Either pass and object of [libMovie] to DestViewController.dataSource if you want to inflate multiple rows of different movies or return 1 in numberOfRowsInSection and pass set the label content in cell with movieTitle and movieRelease.

Answer 2

In your code, numberOfRowsInSection is returning dataSource.count, but doesn't seem to pass that data to this view controller.
You can either hardcode the numberOfRowsInSection as 1 or pass the dataSource from the first view controller and update your cellForRowAtIndexPath method.

Answer 3

The data source in the destination view controller is empty, what do you expect?
Uncomment the line in loadDataSource and reload the table view.
func loadDataSource(){
dataSource.append(ibMovie(title: movieTitle, release: movieRelease))
tableView.reloadData()
}
And replace
movieCell.cellTitleLabel.text = "Movie Title: \(movieTitle)"
movieCell.cellReleaseLabel.text = "Release Date: \(movieRelease)"
with
movieCell.cellTitleLabel.text = "Movie Title: \(libMovie.title)"
movieCell.cellReleaseLabel.text = "Release Date: \(libMovie.release)"