Retrieve values as per index of another array

Question

I am facing an issue in this since a long.

Problem:

I need to get value as per the index of following array in my tableView.

indexArray = [3, 6, 4, 5, 8, 30, 31, 7, 18, 29, 1]

paramNameArray = ["Date", "Sync Time", "UUC2T7", "Set MD", "Total KVA", "Total KW", "Running MD", "SMS 1 KW", "P.F.", "ET-5 KW", "ET-3_4 KW", "ET- 6_7 KW", "ABP-1 KW", "ABP-1A KW", "ABP-2 KW", "G-22 KW", "UUC36T37", "G-23 KW", "WRM KW", "Total KWH", "Total KVAH", "ET-5 KWH", "ET-3_4 KWH", "ET-6_7 KWH", "ABP-1 KWH", "ABP-1A KWH", "ABP-2 KWH", "SMS 1 KWH", "UUC60T73", "PLC Time", "Voltage", "Current", "Load Factor", "Avg. P.F."]

Problem:

Now in cellForRowAt indexPath of my tableView, I need "Set MD" value at indexPath 0 (need value as per the index of indexArray)

This way for each row of my tableView, I need value as per the indexArray's index.

For Example:

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell 
{
    (at 0th Index) cell.lblParameter.text = "Set MD"  // value from paramNameArray as per indexArray's index(3)

    (at 1st Index) cell.lblParameter.text = "Running MD"  // value from paramNameArray as per indexArray's index(6) 

    // And so on...

    return cell
}

Help would be much appreciated, Thanks! :)

cell.lblParameter.text = paramNameArray[indexArray[indexPath.row]] — vacawama
– vacawama, Commented Jun 22, 2018 at 12:48
@vacawama, I can't believe it was so simple. Thank you so much man! — iHarshil
– iHarshil, Commented Jun 22, 2018 at 12:51
You should rethink your data structures. This has a code smell and you're going to end up with a crashing app. — Ashley Mills
– Ashley Mills, Commented Jun 22, 2018 at 12:54
@AshleyMills, Sorry for my English. But I can't understand what you said. — iHarshil
– iHarshil, Commented Jun 22, 2018 at 12:56

Harshal Valanda · Accepted Answer · 2018-06-22 13:04:47Z

2

First you need to get an index from the indexArray using index path in cellForRowAt: method. and then using that index (got from indexArray) you get value from paramNameArray.

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

let index = indexArray[indexPath.row] as! Int

//check that index won't exceeds `paramNameArray.count` otherwise it will throw `ArrayIndexOutOfBoundsException`.

  if index < paramNameArray.count {

    let text = paramNameArray[index]
    cell.lblParameter.text = text
  } else {
     cell.lblParameter.text = "some default text goes here in case if value is not present"
  }

  return cell
}

edited Jun 22, 2018 at 13:04

Harshal Valanda

5,47130 silver badges64 bronze badges

answered Jun 22, 2018 at 12:59

Mahendra

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