ios Collapsable/expandable tableview on storyboard - ios

Question

i wanted to make collapsable/expandable tableview in which i have two headers product and services and each of them contains 10+ object with custom cell which contains checkmark on left side and label. i check for the tutorials but most of them are using .xib while my project is based on storyboard.
i check these tutorials, can anyone please help me regarding this.
https://www.cocoacontrols.com/controls/collapseclick
https://www.cocoacontrols.com/controls/ratreeview
https://www.cocoacontrols.com/controls/combobox-for-uitableview

Answer 1

I have found a great sample project on this at:
https://github.com/singhson/Expandable-Collapsable-TableView
It is very easy to understand and implement.

Answer 2

//
// ViewController.h
// expandableTV
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController
{
NSMutableIndexSet *expandedSections;
}
#property (weak, nonatomic) IBOutlet UITableView *tbl_expandablecategory;
#end
//
// ViewController.m
// expandableTV
//
#import "ViewController.h"
#import "expandableTC.h"`
#interface ViewController ()
{
NSArray *jsonArray;
BOOL currentlyExpanded;
}
#end
#implementation ViewController
#synthesize tbl_expandablecategory;
NSMutableArray *arr_categorymenumodel;
- (void)viewDidLoad {
[super viewDidLoad];
arr_categorymenumodel=[[NSMutableArray alloc] init];
if (!expandedSections)
{
expandedSections = [[NSMutableIndexSet alloc] init];
}
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 6;//[arr_categorymenumodel count];
}
- (BOOL)tableView:(UITableView *)tableView canCollapseSection:(NSInteger)section
{
return YES;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if ([self tableView:tableView canCollapseSection:section])
{
if ([expandedSections containsIndex:section])
{
return 2;
}
}
return 1;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.row==0)
{
return 40;
}
return 270;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
// Configure the cell...
if (!indexPath.row)
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text =#"Room ";// [NSString stringWithFormat:#"%#",[[arr_categorymenumodel objectAtIndex:indexPath.section] valueForKey:#"CategoryName"]];
// cell.backgroundColor=[UIColor colorWithRed:237.0/255.0 green:237.0/255.0 blue:237.0/255.0 alpha:1.0];
cell.textLabel.font=[UIFont fontWithName:#"HelveticaNeue" size:20.0];
if (currentlyExpanded)
{
}
cell.accessoryView = [[UIImageView alloc]initWithImage: [UIImage imageNamed:#"rightarrow.png"]];
return cell;
}
else
{
expandableTC *cell = [tableView dequeueReusableCellWithIdentifier:#"Customcell"];
return cell;
}
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if ([self tableView:tableView canCollapseSection:indexPath.section])
{
if (!indexPath.row)
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
[tableView deselectRowAtIndexPath:indexPath animated:YES];
NSInteger section = indexPath.section;
currentlyExpanded = [expandedSections containsIndex:section];
NSInteger rows;
NSMutableArray *tmpArray = [NSMutableArray array];
if (currentlyExpanded)
{
rows = [self tableView:tableView numberOfRowsInSection:section];
[expandedSections removeIndex:section];
cell.accessoryView = [[UIImageView alloc]initWithImage: [UIImage imageNamed:#"rightarrow.png"]];
}
else
{
[expandedSections addIndex:section];
rows = [self tableView:tableView numberOfRowsInSection:section];
cell.accessoryView = [[UIImageView alloc]initWithImage: [UIImage imageNamed:#"downarrow.png"]];
}
for (int i=1; i<rows; i++)
{
NSIndexPath *tmpIndexPath = [NSIndexPath indexPathForRow:i inSection:section];
[tmpArray addObject:tmpIndexPath];
}
if (currentlyExpanded)
{
[tableView deleteRowsAtIndexPaths:tmpArray
withRowAnimation:UITableViewRowAnimationFade];
}
else
{
[tableView insertRowsAtIndexPaths:tmpArray
withRowAnimation:UITableViewRowAnimationFade];
}
}
}
}
#end