Swift Tableview data load getting Index out of range - json

Question

My scenario, I am trying to load JSON data into Tableview. Here, Tableview custom cell I am maintaining. Whenever trying to upload data into tableview, I may have chance to add new data from server.
Here, while loading I am getting Index out of range error. Every time I am calling JSON function from viewWillAppear. I have enough data, Inside my array nothing uneven data. Below code I am using
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated) // No need for semicolon
self.tableArray.removeAll()
self.cartname.removeAll()
self.parentid.removeAll()
self.name.removeAll()
self.year.removeAll()
parseJSON()
}
This is my JSON Process
if let content = json["content"] as? [[String:String]] {
print(json)
for category in content {
let cat_id = category["cat_id"]
let cat_name = category["cat_name"]
let cat_parentid = category["cat_parentid"]
let name = category["name"]
let year = category["year"]
self.tableArray.append(cat_id ?? "unknnown")
self.cartname.append(cat_name ?? "unknnown")
self.parentid.append(cat_parentid ?? "unknnown")
self.name.append(name ?? "unknnown")
self.year.append(year ?? "unknnown")
}
Tableview cell data load
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! MyCustomCell
cell.cat_id.text = self.tableArray[indexPath.row]
cell.cat_name.text = self.cartname[indexPath.row]// Some time Here I am getting out of range error
cell.cat_parentid.text = self.parentid[indexPath.row]
cell.name.text = self.name[indexPath.row] // Here I am getting out of range error
cell.year.text = self.year[indexPath.row]
return cell
}
}

Answer 1

It's expected with multiple arrays when using the tableView ,First from OOP point you need to create 1 model like
struct Root: Codable {
let catID, catName, catParentid, year,name: String?
enum CodingKeys: String, CodingKey {
case catID = "cat_id"
case catName = "cat_name"
case catParentid = "cat_parentid"
case year, name
}
}
and use Codable to parse the json
var arr = [Root]()
do {
let content = json["content"] as! [[String:String]]
let staData = try JSONSerialization.data(withJSONObject:content,options:[])
arr = try JSONDecoder().decode([Root].self, from:staData)
}
catch {
print(error)
}
in numberOfRows
return arr.count
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! MyCustomCell
let item = arr[indexPAth.row]
cell.cat_id.text = item.catID
cell.cat_name.text = item.catName
cell.cat_parentid.text = item.catParentid
cell.name.text = item.name
cell.year.text = item.year
return cell
}