UIPopover 未显示，导致崩溃
我使用此代码从分割视图控制器的详细视图的工具栏中显示弹出窗口。
- (IBAction)showBookmarksMenu:(id)sender
{
BookmarksViewController* content = [[BookmarksViewController alloc] init];//UITableViewController
UIPopoverController* aPopover = [[UIPopoverController alloc] initWithContentViewController:content];
aPopover.delegate = self;
[content release];
// Store the popover in a custom property for later use.
self.popoverController = aPopover;
[aPopover release];
[self.popoverController presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
发生此崩溃：
2011-08-16 23:59:55.730 Codes[3646:707] -[DetailViewControlleriPad showBookmarksMenu]: unrecognized selector sent to instance 0x191220
2011-08-16 23:59:55.757 Codes[3646:707] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[DetailViewControlleriPad showBookmarksMenu]: unrecognized selector sent to instance 0x191220'
I'm using this code to show a popover from the toolbar of the detail view of a split view controller.
- (IBAction)showBookmarksMenu:(id)sender
{
BookmarksViewController* content = [[BookmarksViewController alloc] init];//UITableViewController
UIPopoverController* aPopover = [[UIPopoverController alloc] initWithContentViewController:content];
aPopover.delegate = self;
[content release];
// Store the popover in a custom property for later use.
self.popoverController = aPopover;
[aPopover release];
[self.popoverController presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
Getting this crash:
2011-08-16 23:59:55.730 Codes[3646:707] -[DetailViewControlleriPad showBookmarksMenu]: unrecognized selector sent to instance 0x191220
2011-08-16 23:59:55.757 Codes[3646:707] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[DetailViewControlleriPad showBookmarksMenu]: unrecognized selector sent to instance 0x191220'
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showBookmarksMenu:方法正在DetailViewControlleriPad上调用，而应该在实现它的类上调用它。确保该方法已正确挂接到 IB 中。
The
showBookmarksMenu:method is being called onDetailViewControlleriPad, whereas it should be called on the class which implements it.Ensure that the method is properly hooked in IB.
该类找不到您的 showBookmarksMenu: 方法，这就是它使您的应用程序崩溃的原因。检查您的源代码并重试。祝您编码愉快。 :)
Your showBookmarksMenu: method is not found by the class and that's why it is crashing your application. Check your source code and try again. Have a happy coding. :)