CODEWITHSUNDEEP
iosswift
Istiak Morsalin
Istiak Morsalin

Reputation: 11159

iOS TableView on Scrollview Event Problem

I have a scrollview in a ViewController. The scrollview has a UIScrollViewDelegate.On upon that i am adding a Tableview like below: 

self.view.addSubview(self.tableView)

But when i am scrolling on tableview cells somehow the scrollview delegate is getting event, which is unexpected. What can i do to prevent that?

Upvotes: 0

Views: 151

Answers (2)

hardik parmar
hardik parmar

Reputation: 853

The UITableView is the subclass of UIScrollView and that is the reason you are getting calls to the UIScrollViewDelegate when you are scrolling the cells.

You can not prevent this if you want to have the scrolling enabled for the TableView. I would suggest you check this condition inside your delegate method, for example:

func scrollViewDidScroll(_ scrollView: UIScrollView) {
    guard scrollView != self.tableView else {return}
}

Upvotes: 1

bseh
bseh

Reputation: 467

That's normal because UITableView is a subclass of UIScrollView. Thus you should check if scrollView != self.tableView then do what you want to do inside the scrollView delegate method.

Upvotes: 0

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