Min and Max button functionality in UITableVIew - objective-c

Question

I want to do min/max (expand/collapse) button functionality.Please see bellow image for more information.Is anybody know how to develop this functionality.I have some examples but those are not like exactly what i want.Please help me to solve this problem.

Answer 1

I've got a similar kinda requirement few days back. I have done this using custom tableview cell.
Firstly, you have to pass the indexpath of each row to the cell. For this i have taken a property in custom tableview cell.
i.e, #property(nonatomic,assign) NSIndexPath *indexPathOfCell;
Now, you have to pass the indexpath of row in datasource method.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath;
And you have to write a delegate method in custom tableviewcell so that when the user clicks on the min/max button you can reload that cell through this delegate call.
-(void)reloadCellWithIndexPath:(NSIndexPath*)indexPath;
You have to set the view controller as delegate for the custom tableview cell in which you are populating the table. In that class you have to maintain an NSMutableArray.
NSMutableArray *selectedIndexPaths;
When ever the reloadCellWithIndexPath gets called you can simply do same.
-(void)reloadCellWithIndexPath:(NSIndexPath*)indexPath{
if(![selectedIndexPaths containsObject:indexPath]){
[selectedIndexPaths addObject:indexPath];
}else
[selectedIndexPaths removeObject:indexPath];
[tableView reloadData];
}
In heightForRowAtIndexPath method you can change the height for a particular row.
-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
BOOL cellModeChanged = NO;
for (NSIndexPath *indexpath in selectedIndexPaths) {
if(indexpath.section == indexPath.section && indexpath.row == indexPath.row)
cellModeChanged = YES;
}
if(cellModeChanged)
return 400.0;
else
return 100.0;
}