UIScrollView中添加了一个手势 UITapGestureRecognizer *_tapRecognizer = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(foregroundTapped:)];    _tapRecognizer.delegate = self;    [_foregroundScrollView addGestureRecognizer:_tapRecognizer];之后didSelectRowAtIndexPath不会立即执行,要延时2-3秒才执行。这样肯定不行。网上找资料之后是因为被UITapGestureRecognizer 拦截了。解决办法是重写UIGestureRecognizerDelegate中的如下方法- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch{    // 若为UITableViewCellContentView（即点击了tableViewCell），则不截获Touch事件    if ([NSStringFromClass([touch.view class]) isEqualToString:@"UITableViewCellContentView"]) {        return NO;    }    return  YES;}