在cell上添加长按手势，并给手势添加tag值

1、在cell上添加长按手势；

UILongPressGestureRecognizer *longPressGR = [[UILongPressGestureRecognizer
alloc]
initWithTarget:self
action:@selector(longPress:)];

longPressGR.minimumPressDuration =
0.5;

[cell addGestureRecognizer:longPressGR];

2、将手势添加到cell上之后在设置手势的tag值；

longPressGR.view.tag = indexPath.row;