objective c - How to correctly present a popover from a UITableViewCell with UIPopoverArrowDirectionRight or UIPopoverArrowDirectionLeft

Question

I always try to present a popover from a cell inside a tableView this way:

[myPopover presentPopoverFromRect:cell.frame inView:self.tableView permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];

but I cannot use UIPopoverArrowDirectionRight or Left, because, depending on the position of the ipad (portrait or landscape), the popover appears someplace else.

Am I presenting the popover the right way?

PS: the table view is in the detailView of a splitView.

Answer 1

You're getting the frame from the cell via the rectForRowAtIndexPath method. This is correct. However the tableview is most likely a subview of a larger iPad view so when the popover gets the coordinates it thinks they're in the larger view. This is why the popover appears in the wrong place.

Example, the CGRect for the row is (0,40,320,44). Instead of the popover targeting that frame on the tableview it instead targets that frame on your main view.

I solved this problem by converting the frame from the relative coordinates of the table to coordinates in my larger view.

code:

CGRect aFrame = [self.myDetailViewController.tableView rectForRowAtIndexPath:[NSIndexPath indexPathForRow:theRow inSection:1]];
[popoverController presentPopoverFromRect:[self.myDetailViewController.tableView convertRect:aFrame toView:self.view] inView:self.view permittedArrowDirections:UIPopoverArrowDirectionRight animated:YES];

Hope that helps others searching for this issue.