UIMenuItem

        UIMenuItem *share = [[UIMenuItem alloc] initWithTitle:@"分享"action:@selector(shareClick:)];
        UIMenuItem *report = [[UIMenuItem alloc] initWithTitle:@"举报"action:@selector(report:)];
        UIMenuController *menu = [UIMenuController sharedMenuController];
        [menu setMenuItems:[NSArray arrayWithObjects:share, report, nil]];
        [menu setTargetRect:cell.c_post_content.frame inView:cell.c_post_content.superview];
        [menu setMenuVisible:YES animated:YES];