UITableView 添加長按手勢UILongPressGestureRecognizer

 給UITableView 添加長按手勢，識別長按哪一行。

    長按手勢類UILongPressGestureRecognizer， 屬性minimumPressDuration表示最短長按的時間

   添加手勢代碼：

UILongPressGestureRecognizer * longPressGr = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressToDo:)];




    longPressGr.minimumPressDuration = 1.0;




    [self.tableView addGestureRecognizer:longPressGr];

響應長按事件代碼： -(void)longPressToDo:(UILongPressGestureRecognizer *)gesture {          if(gesture.state == UIGestureRecognizerStateBegan)     {         CGPoint point = [gesture locationInView:self.tableView];                   NSIndexPath * indexPath = [self.tableView indexPathForRowAtPoint:point];                   if(indexPath == nil)  return ;          //add your code here                           } }