iOS開發長按tabbaleVew

實現步驟:
1.給cell新增UILongPressGestureRecognizer和相應處理事件

• (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
  {
  ..............
  UILongPressGestureRecognizer * longPressGesture = [[UILongPressGestureRecognizer alloc]initWithTarget:selfaction:@selector(cellLongPress:)];
  [cell addGestureRecognizer:longPressGesture];
  return cell;
  }
  2.配置和顯示UIMenuController

• (void)cellLongPress:(UIGestureRecognizer *)recognizer{
  if (recognizer.state == UIGestureRecognizerStateBegan) {
  CGPoint location = [recognizer locationInView:self];
  NSIndexPath * indexPath = [self indexPathForRowAtPoint:location];
  UIMyTableViewCell *cell = (UIMyTableViewCell *)recognizer.view;
  　　　　　//這裡把cell做為第一響應(cell預設是無法成為responder,需要重寫canBecomeFirstResponder方法)
  [cell becomeFirstResponder];

    UIMenuItem *itCopy = [[UIMenuItem alloc] initWithTitle:@"複製" action:@selector(handleCopyCell:)];
    UIMenuItem *itDelete = [[UIMenuItem alloc] initWithTitle:@"刪除" action:@selector(handleDeleteCell:)];        
    UIMenuController *menu = [UIMenuController sharedMenuController];
  

[menu setMenuItems:[NSArray arrayWithObjects:itCopy, itDelete, nil]];
[menu setTargetRect:cell.frame inView:self];
[menu setMenuVisible:YES animated:YES];

    [itCopy release];
    [itDelete release];
}

}

• (void)handleCopyCell:(id)sender{//複製cell
  NSLog(@"handle copy cell");
  }

• (void)handleDeleteCell:(id)sender{//刪除cell
  NSLog(@"handle delete cell");
  }

3.在自定義的cell裡重寫canBecomeFirstResponder方法，返回yes
//為了讓選單顯示，目標檢視必須在responder鏈中，很多UIKit檢視預設並無法成為一個responder，因此你需要使這些檢視過載 canBecomeFirstResponder方法，並返回YES

• (BOOL)canBecomeFirstResponder{
  return YES;
  }

經過這幾步，就可以成功顯示了，又在網上看到一篇講這個的外文，分享一下：
http://www.intridea.com/blog/2010/12/22/developers-notes-for-uimenucontroller