2019独角兽企业重金招聘Python工程师标准>>> 
给UITableView 添加长按手势，识别长按哪一行。
长按手势类UILongPressGestureRecognizer， 属性minimumPressDuration表示最短长按的时间
添加手势代码：
UILongPressGestureRecognizer * longPressGr = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPressToDo:)];longPressGr.minimumPressDuration = 1.0;[self.tableView addGestureRecognizer:longPressGr];[longPressGr release];响应长按事件代码：
-(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}
}
