Problem in selecting row of table in view subclass technique

In my application i have table view cells.When i select one cell it takes me corresponding views according to selected cells. I开发者_StackOverflow have implemented it using custom subclass of UITableViewCell i.e. subclassing of cells with nib file rather then subviews using code.

I used NSDictionary to feed my cells data like below on viewDidLoad method

NSDictionary *row1=[[NSDictionary alloc]initWithObjectsAndKeys:@"Mac", @"Name", @"1.5", @"Rate", nil];

NSDictionary *row2=[[NSDictionary alloc]initWithObjectsAndKeys:@"MINI", @"Name", @"14.4",@"Rate", nil];  NSArray *array=[[NSArray alloc]initWithObjects:row1, row2 nil];
self.computers=array;

and in didSelectRowAtIndexPath method i use

 -(void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath{

if (childController==nil) {
    childController=[[computerConverter alloc]initWithNibName:@"computerController" bundle:nil];

    childController.title=@"Select computer to convert";
    NSUInteger row=[indexPath row];
    NSString *selectedComputer=[self.computers objectAtIndex:row];
    NSString *detailMassage=[[NSString alloc]initWithFormat:@"%@",selectedComputer];
    childController.massage =detailMassage;
    childController.title=selectedComputer;
    [detailMassage release];
    [self.navigationController pushViewController:childController animated:YES];
    childController =nil;
}

}

It shows NSException and does not take me to another corresponding view. Any suggestion will highly appreciated.

row1 and row2 are dictionaries and hence you cannot do this

childController.title=selectedComputer;

You may want to set the returned value for a key from this dictionary. I guess the problem is in the above line.