How to work with two different custom cells in one tableView ? Using Storyboard, iOS 7

Question

I have two custom cells. And I want to display 2 sections in my UITableView. The first section with one row displaying the first custom cell, and the second section displaying a list of objects pulled from core data.

How should I implement the "cellForRowAtIndexpath" method ?

Here is some of my code:

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{

// Return the number of sections.
return 2;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{

// Return the number of rows in the section.
if (section == 0) {
    return 1;

} else if (section == 1) {
   //gastos is an array
   return [self.gastos count];  
}
return 0;
}


- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath         *)indexPath
{

switch (indexPath.section) {
    case 0:
    {
        SaldoCelda *cell1 = [tableView dequeueReusableCellWithIdentifier:@"Cell1"      forIndexPath:indexPath];
        return cell1;
    }
    case 1:
    {
        static NSString *CellIdentifier = @"Cell";
        CeldaGasto *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier      forIndexPath:indexPath];

        NSManagedObject *gasto = [self.gastos objectAtIndex:indexPath.row];

        [cell.monto setText:[NSString stringWithFormat:@"%@ AR$", [gasto valueForKey:@"monto"]]];
        [cell.categoria setText:[NSString stringWithFormat:@"%@", [gasto valueForKey:@"categoria"]]];
        [cell.fecha setText:[NSString stringWithFormat:@"%@", [gasto valueForKey:@"fecha"]]];

        return cell;
    }
    default:
        break;
}
return 0;
}

And this is the error message I get:

Assertion failure in -[UITableView _configureCellForDisplay:forIndexPath:], /SourceCache/UIKit_Sim/UIKit-2903.23/UITableView.m:6246 2014-03-05 01:02:57.181 Spendings[2897:70b] * Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'UITableView dataSource must return a cell from tableView:cellForRowAtIndexPath:'

Thankyou for your help!

Answer 1

I have made a test and it works fine. These are the steps:

1. Create UITableViewController in storyBoard
2. Drag and drop UITableViewCell on a UITableViewController below the cell that is already there
3. Assign CellIdentifier to both cells (I used Cell1 and Cell2)
4. Create 2 subclasses of UITableViewCell (I called them Cell1 and Cell2)
5. Create subclass of UITableViewController and name it somehow

6. in cellForRowAtIndexPath method:

   static NSString *CellIdentifier = @"Cell1";
   
   static NSString *CellIdentifier1 = @"Cell2";
   
   switch (indexPath.section) {
   
       case 0:
       {
           Cell1 *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
           return cell;
       }
           break;
       case 1:
       {
           Cell2 *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier1 forIndexPath:indexPath];
           return cell;
       }
           break;
   
       default:
           break;
   

   }

   return nil;
   

As you can see the implementation is the same as yours

The only way I could reproduce your error is by returning nil in switch block and the documentation for dequeueReusableCellWithIdentifier says:

This method always returns a valid cell.

Even if you messed up your cell identifiers, you still wouldn't get the error you posted. So my conclusion is:

reboot, clean project, restart simulator or something like that cause your scenario according to documentation is not possible...