How to fill tableview with two arrays using single custom cell? - ios

Question

I want to display two array values in tableview using single cell.
Suppose i have two array and both contains same no of elements.
FirstArray and SecondArray. there is two label in tableview cell Lbl1 and Lbl2, now Lbl1 should fill with FirstArray and Lbl2 Should fill with SecondArray. I know that we can not use two array for uitableview datasource . I can not figure out how to do this.
Please help me.
I also tried using multiple custom tableview cells with section. but it did not give the desired result.
I have two Array -
let datalist1 = ["firstCell1" , "firstCell2" , "firstCell3" , "firstCell4"]
let datalist2 = ["secondCell1" ,"secondCell2" , "secondCell3" ,"secondCell4"]
In tableview numberOfRowsInSection :
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if section == 0
{
return datalist1.count
}
else {
return datalist2.count
}
}
In cellForRowAt :
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.section == 0 {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell1", for: indexPath) as? FirstCell
cell?.initData(name: datalist1[indexPath.row])
return cell!
}
else {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell2", for: indexPath) as? SecondCell
cell?.initData(lbl: datalist2[indexPath.row])
return cell!
}
}
Actual Output :
FirstCell1
FirstCell2
FirstCell3
FirstCell4
SecondCell1
SecondCell2
SecondCell3
SecondCell4
Expected Output:
FirstCell1
SecondCell1
FirstCell2
SecondCell2
FirstCell3
SecondCell3
FirstCell4
SecondCell4

Answer 1

Hello You not need to add two section just do as bellow.
This is your arrays.
let datalist1 = ["firstCell1" , "firstCell2" , "firstCell3" , "firstCell4"]
let datalist2 = ["secondCell1" ,"secondCell2" , "secondCell3" ,"secondCell4"]
Number of rows
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return datalist1.coun
}
Cell for row
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell1", for: indexPath) as? FirstCell
cell.Lbl1.text = datalist1[indexPath.row]
cell.Lbl2.text = datalist2[indexPath.row]
return cell!
}

Answer 2

Based on the explanation and code, you have provided, the requirement is not clear.
However, there may be two cases based on the above details:
Case-1:
Cell-1 : FirstCell1
Cell-2 : SecondCell1
Cell-3 : FirstCell2
Cell-4 : SecondCell2
Then you can implement something like below:
In tableview numberOfRowsInSection :
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return (datalist1.count + datalist2.count)
}
In cellForRowAt :
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.row % 2 == 0 {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell1", for: indexPath) as? FirstCell
cell?.initData(name: datalist1[indexPath.row])
return cell!
}
else {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell2", for: indexPath) as? SecondCell
cell?.initData(lbl: datalist2[indexPath.row])
return cell!
}
}
Case-2:
Cell-1 : FirstCell1 SecondCell1
Cell-2 : FirstCell2 SecondCell2
Cell-3 : FirstCell3 SecondCell3
Cell-4 : FirstCell4 SecondCell4
Then you can implement something like below:
In tableview numberOfRowsInSection :
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return datalist1.count
}
In cellForRowAt :
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell1", for: indexPath) as? FirstCell
//Single custom cell can implement both the labels
cell?.initData(name: datalist1[indexPath.row],lbl: datalist2[indexPath.row])
return cell!
}
}

Answer 3

You've to Declare as
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if indexPath.section %2 == 0 {
let cell1 = tableView.dequeueReusableCell(withIdentifier: "cell1", for: indexPath) as? FirstCell
cell1.lbl1.text = datalist1[indexPath.row]
return cell1!
}
else {
let cell2 = tableView.dequeueReusableCell(withIdentifier: "cell2", for: indexPath) as? SecondCell
cell2.lbl2.text = datalist2[indexPath.row]
return cell2!
}
}

Answer 4

The best way is using models. You have to declare data model such as
struct MyModel {
var firstValue: String?
var secondValue: String?
}
Then you have to convert your two arrays to a single array of MyModel objects
var myData = Array<MyModel>()
Then by using for loop you can iterate over one array and fill the myData array.
for (index, _) in datalist1 {
let object = MyModel()
object.firstValue = datalist1[index]
object.firstValue = datalist2[index]
myData.append(object)
}
Then just implement tableview protocol methods and fill your custom cell with MyModel objects.

Answer 5

1. Create a single array from datalist1 and datalist2 using zip(_:_:), that we'll be using as dataSource for tableView.
lazy var dataList = Array(zip(self.datalist1, self.datalist2))
dataList is of type [(String, String)].
Example:
If datalist1 and datalist2 are,
let datalist1 = ["firstCell1" , "firstCell2" , "firstCell3" , "firstCell4"]
let datalist2 = ["secondCell1" ,"secondCell2" , "secondCell3" ,"secondCell4"]
then, dataList contains
[("firstCell1", "secondCell1"), ("firstCell2", "secondCell2"), ("firstCell3", "secondCell3"), ("firstCell4", "secondCell4")]
2. You need a single cell to display all that data. There is no need to create 2 different UITableViewCells for this. Example:
class CustomCell: UITableViewCell {
#IBOutlet weak var lbl1: UILabel!
#IBOutlet weak var lbl2: UILabel!
}
3. Now, your UITableViewDataSource methods look like,
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return dataList.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! CustomCell
cell.lbl1.text = self.dataList[indexPath.row].0
cell.lbl2.text = self.dataList[indexPath.row].1
return cell
}