Populating UIPickerView with CoreData attribute -- Swift4 IOS11 - ios

Question

I have tried so much what I found here on StackOverflow like this, but nothing worked for me… I would like to use the Values from a Core Data Attribute for a PickerView.
My Entity is called "Task" with the Attribute "name".
I know I need to fetch the data and I already did that, but I don’t know how to just get the values of my Attribute as an Array.
At the moment I use A UIPickerView like this:
var var1 = [""]
let var2 = ["---","1","2","3","4","5","6","7"]
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
if(component==0){
return var1[row]
}
return var2[row]
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if(component==0){
return var1.count
}
return var2.count
}
public func numberOfComponents(in pickerView: UIPickerView) -> Int{
return 2
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
if(component==0){
test1 = var1[row]
}
test2 = var2[row]
}
This is how I fetch my Data for an UITableView:
// GetData
func getData() {
let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
do {
tasks = try context.fetch(Task.fetchRequest())
}
catch{
print("Fetching Failed")
}
}
So I hope someone can help me, fetching the right attribute. I'm really new to Swift/Programming I started with swift 3 Days ago.. so a little code example would be great for me to understand how it works... Thanks in advance
EDIT: (How I populate the data in table view)
var tasks : [Task] = []
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell()
let task = tasks[indexPath.row]
cell.textLabel?.text = task.name
return cell
}
Update:
func pickerView(_ pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> Task {
return tasks[row]
}
func pickerView(_ pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
return tasks.count
}
public func numberOfComponents(in pickerView: UIPickerView) -> Int{
return 1
}
func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
test1 = tasks[row]
}