Question

After updating to iOS 5.1 from 5.0, an actionsheet presented from a button in the popover of a splitview controller is crashing the app. The error that its outputting is: * Assertion failure in -[UIActionSheet presentSheetInPopoverView:], /SourceCache/UIKit/UIKit-1914.84/UIActionSheet.m:1816
So in the Master View of the Splitview controller, I have a camera button that I attempt to present an actionsheet from asking to pick from camera roll or from camera. Any ideas?

if(lpm != null)  //Long Press Menu / Action Sheet
    lpm = null;
lpm = new UIActionSheet("Select an action to perform on " + Application.MO.CurrentList[indexPath.Row].Name);
foreach(var button in buttonList)
    lpm.AddButton(button);
lpm.CancelButtonIndex = buttonList.Count - 1;
lpm.Style = UIActionSheetStyle.BlackTranslucent;                
lpm.ShowFrom(theList.RectForRowAtIndexPath(indexPath), this.View, true);
lpm.Clicked += delegate(object sender, UIButtonEventArgs e2) {
                    lpm.DismissWithClickedButtonIndex(e2.ButtonIndex, false);
                            Application.MO.RespondToLongPressSelection(e2.ButtonIndex);
                        };

Answer 1

This is a potential work-around, it has me creating an entirely seperate popover and inserting my UIActionSheet into that, which conveniently adds a really cool slide-in effect:

var buttonList = Application.MO.LoadLongPressOptions(false);
if(lpm != null)
lpm = null;
if(longpresspopover != null)
{
    longpresspopover.Dismiss(false);
    longpresspopover = null;
}
longpresspopovercontroller = new UIViewController();
                    longpresspopovercontroller.View.BackgroundColor = UIColor.Black;
longpresspopover = new UIPopoverController(longpresspopovercontroller);
                    longpresspopover.PresentFromRect(theList.Frame, this.View,UIPopoverArrowDirection.Any, true);
                    lpm = new UIActionSheet("Select an action to perform:");
                    foreach(var button in buttonList)
                        lpm.AddButton(button);
                    lpm.CancelButtonIndex = buttonList.Count - 1;
                    lpm.Style = UIActionSheetStyle.BlackTranslucent;
                    lpm.ShowInView(longpresspopovercontroller.View);
                    longpresspopover.SetPopoverContentSize(lpm.Frame.Size, false);
                    lpm.Clicked += delegate(object sender, UIButtonEventArgs e2) {
                            lpm.DismissWithClickedButtonIndex(e2.ButtonIndex, false);
                            longpresspopover.Dismiss(true);
                            Application.MO.RespondToLongPressSelection(e2.ButtonIndex);
                        };