我收到一条错误消息：“使用未声明的标识符'事件'”

Question

I am getting an error that reads "Use of Undeclared Identifier 'event'" that appears on this line. Can someone help?

UIView *senderView = [[event.allTouches anyObject] view];

Here is the code.

  }
  -  (void)didTap_tabBarItem1 {
      CurrentItemsViewController *controller = [[CurrentItemsViewController alloc] init];
      UINavigationController *navigationController = [[UINavigationController alloc]
         initWithRootViewController:controller];
      [navigationController setNavigationBarHidden:YES animated:NO];
      UIView *senderView = [[event.allTouches anyObject] view];
      CGRect senderFrame = [senderView convertRect:senderView.frame toView:self.view];
      self.tabBarItem1Popover = [[[UIPopoverController alloc] initWithContentViewController:navigationController
         ] autorelease];
      [self.tabBarItem1Popover presentPopoverFromRect:senderFrame inView:self.view permittedArrowDirections:
         UIPopoverArrowDirectionAny animated:YES];
      [navigationController release];
      [controller release];
   }

Thanks.

Answer 1

it's all because in you use undeclared variable event. You don't pass it to your method - (void)didTap_tabBarItem1 . You can do something like this - (void)didTap_tabBarItem1:(UIEvent *)event but you should pass this event variable to this method.

Answer 2

You don't have any variable named event

Did you copy and paste this code?