Duplicates in tableview section Swift - swift

Question

I amm trying to put some datas into categories into a tableView. Pizzas into pizza category, burgers into burger etc, but i have every item duplicate ( Look here Picture . What can be the problem ?
Struct :
struct Food {
var photoKeyRestaurant: String
var foodName: String
var foodDescription: String
var restaurantName: String
var priceFood: Int
var typeFood: String
}
Table View
func numberOfSections(in tableView: UITableView) -> Int {
return food.count
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return food[section].foodName.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "FoodTableViewCell", for: indexPath) as! FoodTableViewCell
// cell.delegate = self
let mancare = food[indexPath.section]
let storageRef = Storage.storage().reference()
let photoRef = storageRef.child(mancare.photoKeyRestaurant)
cell.foodImage.sd_setImage(with: photoRef)
cell.descriptionLabel.text = mancare.foodDescription
cell.foodNameLabel.text = mancare.foodName
cell.priceLabel.text = "\(mancare.priceFood) lei"
cell.foodImage.layer.borderWidth = 1
cell.foodImage.layer.masksToBounds = false
cell.foodImage.layer.borderColor = UIColor.black.cgColor
cell.foodImage.layer.cornerRadius = cell.foodImage.frame.height/2
cell.foodImage.clipsToBounds = true
//Fac ca imaginea sa fie cerc - finish
return cell
}
func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
return 120
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
tableView.deselectRow(at: indexPath, animated: true)
}
func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
return food[section].typeFood
}
If somone will ask, im retrieving the data from the firestore, but there s no problem there, because the data is retrieved succesfuly.
Anyone know what can be the problem ? Thanks

Answer 1

It is interesting that your code for cellForRowAt never actually mentions the indexPath.row. It refers only to the indexPath.section. How can you get and display data corresponding to this row, which you are supposed to configure in cellForRowAt if you do not in some way refer to the question of what row this is?
Perhaps there is some other mechanism going on that I don't see, but it seems to me that this one fact alone explains why each section just shows the same data over and over rather than different data for each row.

Answer 2

You have 2 big problems with this code.
You have the wrong array of data fo sections.
in the func cellForRowAt you cant return indexPath.section.
With first. You need to use 2-dimensional arrays like:
var foodCategorys: [FoodCategory] = [[categoryName, Food],[categoryName, Food]]
So you need another struct to contain this 2-dimensional array:
struct FoodCategory {
var categoryName: String
var listFood: [Food] = [] // Food is the struct that you currently have
}
So the data will display in tableView is an array FoodCategory. With numberOfSections will return a count of an array FoodCategory. And numberOfRowsInSection will return a count of a listFood into FoodCatogory.
func numberOfSections(in tableView: UITableView) -> Int {
return foodCategorys.count //array of listFood
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return foodCategorys[section].listFood.count
}
And second, in cellForRowAt, when you want to get the index of list data. you need to call foods[indexPath.section].listFood[indexPath.row]. The func need row not section
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "FoodTableViewCell", for: indexPath) as! FoodTableViewCell
//cell.delegate = self
let mancare = foods[indexPath.section].listFood[indexPath.row] //Remeber that, the array food we are using in this line is array of FoodCategory
I think you need to research with key word "section in uitableview swift", or watch this video https://www.youtube.com/watch?v=AHY09z-XS9s
So, that all. I hope you will understand how tableview and section work