Question

I’ve been trying to have two tables in a utility application but I’m having problems; when I create two delegates and two data sources I’m getting an error. Is there a way to make multiple delegates in one class?

Answer 1

Actually you cannot put two delegates and two datsource for two tables in same view controller.

You can use a flag or a hidden UILabel where in you set the unique value and access datasource and delegates based on the value of flag or label.

For Example:

If I have 2 tables, one for Buy and one for Sale

I will set UILabel named say tableIdentifier

tableIdentifier.text = @"Buy";

when I want to load the Buy table

and similarly set

tableIdentifier.text = @"Sale";

when I want to load the Sale table

Now as far as datasource and delegate methods are concerned, this is how it goes:

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
 {
     int rows = 0;
      if([tableIdentifier.text isEqualToString:@"Buy"])
      {
          rows = //Your row count for Buy;
      }
      else if([tableIdentifier.text isEqualToString:@"Sale"])
      {
           rows = //Your row count for Sale;
      }

     return rows;
 }

Similarly it works for each of the delegate and datasource methods based on the value of label or flag.

Note:

If you use a label as I have shown above then you need to outlet that label to a hidden label in XIB and @synthesize the label, otherwise its value will return null in the case if the value is not retained.

Hope this helps you

EDIT:

In that case you can take the count as [plist1Array count] + [plist2Array count] in numberOfRowsInSection: method

In cellForRowAtIndexPath: method you can check for indexPath.row and load data based on that

if(indexPath.row <=[plist1Array count])
{
     //Load data in cell.textLabel.text From `plist1Array`
}
else if(indexPath.row >[plist1Array count] && indexPath.row <[plist2Array count])
{
    //Load data in cell.textLabel.text From `plist2Array`
}

EDIT-1:

If you want you can just show them in different sections of the same table rather than showing them in two different tables like

In numberOfRowsInSection: method

 int j = 0;
 if(indexPath.section == 0)
 {
      j=[plist1Array count];
 }
 else if(indexPath.section == 1) 
 {
      j=[plist2Array count];
 }
 return j;

And in cellForRowAtIndexPath: method

if(indexPath.section == 0)
{
     //Load data in cell.textLabel.text From `plist1Array`
}
else if(indexPath.section == 1) 
{
    //Load data in cell.textLabel.text From `plist2Array`
}

Hope this helps