How to expand my table view cell?

Question

Using this code to expand the table view cell,but its not working for me.I know there is some thing wrong in this code help me to find out.

![selectindex = -1;

    // Do any additional setup after loading the view.

}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

{

    return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return  \[Arr_lbl count\];
}
#pragma mark table cell creating and loading the data
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    AntzclubCell *cell=\[tableView dequeueReusableCellWithIdentifier:@"Antz"\];
    cell.img_antzClub.image=\[UIImage imageNamed:\[Arr_img objectAtIndex:indexPath.row\]\];
    cell.lbl_antzClub.text=\[Arr_lbl objectAtIndex:indexPath.row\];
    cell.accessoryType=UITableViewCellAccessoryDetailDisclosureButton;
    cell.backgroundColor=\[UIColor blackColor\];
    return  cell;
}
#pragma mark expanding height
-(CGFloat)tableView:(UITableView *)tableView estimatedHeightForRowAtIndexPath:(NSIndexPath *)indexPath
{
    if(selectindex==indexPath.row){
        return 400;
    }
    else{
        return 132;
    }

}
#pragma mark user selecting option
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (indexPath.row==selectindex) {

        selectindex=-1;
        \[tableView reloadRowsAtIndexPaths:\[NSArray arrayWithObject:indexPath\] withRowAnimation:UITableViewRowAnimationFade\];
        return;
    }
        if(selectindex !=-1)
        {
            NSIndexPath *prepath=\[NSIndexPath indexPathForRow:selectindex inSection:0\];
            selectindex=indexPath.row;
            \[tableView reloadRowsAtIndexPaths:\[NSArray arrayWithObject:prepath\] withRowAnimation:UITableViewRowAnimationLeft\];
        }
        selectindex=indexPath.row;
        \[tableView reloadRowsAtIndexPaths:\[NSArray arrayWithObject:indexPath\] withRowAnimation:UITableViewRowAnimationFade\];
    }]

this image is my output while i click the cell its merged with other data not expanding.

Answer 1

Depending on the versions of iOS you want to support the answer may differ, but it seems you didn't implement heightForRowAtIndexPath: