How can I execute the collectionView methods of a class from another one? - ios

Question

I have my class CardSensors which is has a collectionView which is filled with another XIB
class CardSensors: UIView {
#IBOutlet weak var botName: UILabel!
#IBOutlet weak var sensorsCollectionView: UICollectionView!
var sensors = [[String: Any]]()
var viewModel: NewsFeedViewModel! {
didSet {
setUpView()
}
}
func setSensors(sensors: [[String: Any]]){
self.sensors = sensors
}
static func loadFromNib() -> CardSensors {
return Bundle.main.loadNibNamed("CardSensor", owner: nil, options: nil)?.first as! CardSensors
}
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
}
func setupCollectionView(){
let nibName = UINib(nibName: "SensorCollectionViewCell", bundle: Bundle.main)
sensorsCollectionView.register(nibName, forCellWithReuseIdentifier: "SensorCollectionViewCell")
}
func setUpView() {
botName.text = viewModel.botName
}
}
extension CardSensors: UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "SensorCollectionViewCell", for: indexPath) as? SensorCell else {
return UICollectionViewCell()
}
cell.dateLabel.text = sensors[indexPath.row]["created_at"] as? String
cell.sensorType.text = sensors[indexPath.row]["type"] as? String
cell.sensorValue.text = sensors[indexPath.row]["value"] as? String
cell.sensorImage.image = UIImage(named: (sensors[indexPath.row]["type"] as? String)!)
return cell
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return sensors.count
}
}
Im creating an object in another class like this but I want this to call the methods of the collectionView for it to load the info.
let sensorView = CardSensors.loadFromNib()
sensorView.sensors = sensores
sensorView.setupCollectionView()
The problem is that the collectionView methods are never being called. What can I do to call them from my other class?

Answer 1

You need to set the data souce
sensorsCollectionView.register(nibName, forCellWithReuseIdentifier: "SensorCollectionViewCell")
sensorsCollectionView.dataSource = self
sensorsCollectionView.reloadData()
Then inside your vc , make it an instance variable
var sensorView:CardSensors!
sensorView = CardSensors.loadFromNib()
sensorView.sensors = sensores
sensorView.setupCollectionView()