Question

So I have an extensive hierarchy of UITableViewControllers that I need to navigate through. Each one is going to need it’s own Custom View Controller. My data-source for any particular tableview is currently an array of strings, like “A,B,C,D,E,F”. My didSelectRowAtIndexPath method is a long list of if statements, like this (pseudocode):

if cell.text = "A"
    alloc init AViewController
    navigationController push aViewController
if cell.text = "B"
    alloc init BViewController
    navigationController push bViewController

I think this is messy. There has got to be a cleaner way to do this. Any “best practices” for this? My best idea is to make a custom class that contains a cellTitle and a viewController Class. Then I can use an array of those as my datasource, and do this kind of thing:

UITableViewController *newView = [custom.viewControllerClass alloc] init...

Thoughts?

Answer 1

Add a property on your top-level table view controller:

@property (strong) NSDictionary *viewControllerClassForCell;

In viewDidLoad or other initialization method:

viewControllerClassForCell = [NSDictionary dictionaryWithObjectsAndKeys:
    [AViewController class], @"A",
    [BViewController class], @"B",
    // etc.
    nil];

In didSelectRowAtIndexPath:

Class vcClass = [self.viewControllerClassForCell objectForKey:cell.text];
[self.navigationController pushViewController:[[vcClass alloc] initWithNibName:nil bundle:nil] animated:YES];