How to subclass UITableView?

Question

I honestly don't know how to subclass a UITableView. I'm super confused and looking for whatever help I can get. How do I go about "subclassing" a UITableView? Reason I need to do it is because I need for the table to respond to touches on the background so that keyboards can be hidden. I've tried googling but couldn't find anything. Any help is extremely appreciated!

Answer 1

Most of the time you shouldn't need to subclass UITableView, so see if you can avoid doing so first. If you absolutely have to, create a subclass that inherits from UITableView and override the touch-related methods in the implementation:

// MyTableView.h

@interface MyTableView : UITableView {
}

@end

// MyTableView.m

@implementation MyTableView

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event {
    [super touchesBegan:touches withEvent:event];
}

- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
    [super touchesMoved:touches withEvent:event];
}

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    [super touchesEnded:touches withEvent:event];
}

- (void)touchesCancelled:(NSSet*)touches withEvent:(UIEvent*)event {
    [super touchesCancelled:touches withEvent:event];
}

@end

Answer 2

In your .h file declare it as a subclass:

@interface myViewController: UITableViewController

Then implement the UITableViewController delegate methods:

http://developer.apple.com/iphone/library/documentation/uikit/reference/UITableViewDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/intf/UITableViewDelegate

To detect touches on a cell write your logic in the tableView:didSelectRowAtIndexPath: method: http://developer.apple.com/iphone/library/documentation/uikit/reference/UITableViewDelegate_Protocol/Reference/Reference.html#//apple_ref/occ/intfm/UITableViewDelegate/tableView:didSelectRowAtIndexPath: