自定义(这里主要是改掉系统拷贝的名字为复制) http://www.jianshu.com/p/557530bcd417

1)添加手势

//在自定义cell中的init方法加入
UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressCellHandle:)];
self.longGesture = longPressGesture;
[self addGestureRecognizer:longPressGesture];

2）响应事件

//并加上几个方法
-(void)longPressCellHandle:(UILongPressGestureRecognizer *)gesture {

    [self becomeFirstResponder];
    UIMenuController *menuController = [UIMenuController sharedMenuController];
    UIMenuItem *copyItem = [[UIMenuItem alloc] initWithTitle:@"复制" action:@selector(menuCopyBtnPressed:)];
    menuController.menuItems = @[copyItem];
    [menuController setTargetRect:gesture.view.frame inView:gesture.view.superview];
    [menuController setMenuVisible:YES animated:YES];
    [UIMenuController sharedMenuController].menuItems=nil;
}

// 将要复制的内容复制到系统的剪贴板
- (void)menuCopyBtnPressed:(UIMenuItem *)menuItem {
    //  通用的粘贴板
    [UIPasteboard generalPasteboard].string = self.messageLab.text;
}

- (BOOL)canBecomeFirstResponder {

    return YES;
}

- (BOOL)canPerformAction:(SEL)action withSender:(id)sender {

    if (action == @selector(menuCopyBtnPressed:)) {
        return YES;
    }
    return NO;
}