What is this view that appears floating over the tableView ?

Question

Claude31 OP

Created Feb ’22

Replies 5

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I have a tableView inside a UIView in a VC.

This VC is in a navigation view. It is a UIViewController, not a UITableViewController.

The VC set up is this one:

View set up.png

The issue:

When I run app, there is a bar (full width, about 25 pixels high) appearing over the tableView at the bottom, hiding partially a cell (we see the (i) button nearly completely hidden). When scrolling tableView, this bar does not move and hides other cell.

Table partially hidden.png

I looked at the view in debugger (I edited the content of cells):

tableView debug 2.png

and found that the bar which is hiding comes from navigation controller:

TableView debug 3.png

So 2 questions:

what is this view ?
How to avoid it coming over the table view ?

I have a solution by replacing upperView by a header in tableView, but I would like to understand what goes on here.

Answered by Claude31 in 708014022

Got FB answer. And bug was on my side. I created a view in navigationView…

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Answer 1

MobileTen OP

Feb ’22

Probably a recycled view, separator, extended nav bar, ... are you able to recreate the same behaviour in another sample project?

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Answer 2

Claude31 OP

Feb ’22

There were other project with the same issue. It was solved by implementing func tableView(_ tableView: UITableView, heightForFooterInSection section: Int) -> CGFloat { 0 }. But that does not work here.

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Answer 3

Claude31 OP

Feb ’22

I recreated the navigation controller. Problem persists. So th cause is probably not in NavigationController (as debug view suggested) but in the tableView itself.

So I turned tableView background to red: the parasite view is red. So it is the background showing:

TableView background.png

I turned it to clear, and that solved the problem.

But I still cannot understand why the background appears here. I tried to set the tableView row height from automatic to actual height, no change.

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Answer 4

Claude31 OP

Mar ’22

I filed a bug report bout View debugger. Mar 1, 2022 at 6:49 PM – FB9936973

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Answer 5

Claude31 OP

Mar ’22

Accepted Answer

Got FB answer. And bug was on my side. I created a view in navigationView…

0