reached while popover is still visible

-(void)showsearch:(id)sender
{
    SearchViewController *searchview =[[SearchViewController alloc] initWithNibName:@"SearchViewController" bundle:nil];

    settingpopoverController = [[[UIPopoverController alloc] 
                                    initWithContentViewController:searchview] autorelease];               
    [searchview release];
    [settingpopoverController presentPopover开发者_运维知识库FromBarButtonItem:sender 
                                    permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];


}

When I click on button, the app is crash and I got [UIPopoverController dealloc] reached while popover is still visible. message.

There are some good discussions on this topic here:

Retain/release pattern for UIPopoverController, UIActionSheet, and modal view controllers?

UIPopoverController and memory management

The gist of it is you need to:

• assign your autoreleased popover to a retain property
• set the property to nil in your view's dealloc
• as well as setting it to nil in the popoverControllerDidDismissPopover.

think autorelease is incorrect, here is a tutorial

http://www.jannisnikoy.nl/index.php/2010/04/ipad-tutorial-creating-a-popoverviewcontroller

Problem is you're setting

settingpopoverController =

when you mean to do

self.settingpopoverController =

for which the autorelease would be correct. The second one uses the property accessors, the first just uses the iVar.