CODEWITHSUNDEEP
iosobjective-cuitableviewnsnotificationcenter
flynn
flynn

Reputation: 1584

What is the best way to inform a UITableViewCell that the tableview is scrolling

I'm currently posting a NSNotification that the cell is listening for if the tableview starts scrolling and when it stops scrolling. Is this the right/most efficient approach?

* UPDATE*

Apparently this wasn't clear enough. I'm not trying to inform the tableview that it's scrolling. I'm using this:

- (void )scrollViewDidScroll: (UIScrollView *)scrollView {
    // How should I tell all of my tableview cells that we scrolled.
    [[NSNotificationCenter defaultCenter] postNotificationName:@"scrolled" object:self];

}

And then when the cell is created - 

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(pauseVideo:)    name:@"scrolled" object:nil];

And then posting a notification that each allocated cell is listening for. Is this the best approach?

Upvotes: 0

Views: 489

Answers (2)

m8labs
m8labs

Reputation: 3721

I think for scrolling performance it is better to use scrollViewWillBeginDragging, because it is called once. And in this handler you can just iterate through visible cells and stop player in each of them.

Upvotes: 1

Brooks Hanes
Brooks Hanes

Reputation: 425

A UITableView inherits from UIScrollView. So, there are delegate methods on the UIScrollView which is contained inside the TableView. You should adapt those methods inside your controller.

UPDATED:

Try adapting this:

tableView:didEndDisplayingCell:forRowAtIndexPath:

Upvotes: 2

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