Adding cells programmatically to UITableView

Question

I\'ve just recently started programming for the iPhone and I\'m making an application that connects to a database and gets a set of row names and displays them. When selecte

Answer 1

//######## Adding new section programmatically to UITableView    ############

  @interface MyViewController : UIViewController
    {
        IBOutlet UITableView *tblView;
        int noOfSection;
    }
    -(IBAction)switchStateChanged:(id)sender;
    @end



    @implementation MyViewController
    - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{
        self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
        if (self) {
            // Custom initialization
        }
        return self;
    }
    - (void)viewDidLoad{
        [super viewDidLoad];

        noOfSection = 2;
    }
    - (void)viewDidUnload{
        [super viewDidUnload];
    }
    - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation{
        if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {

            return YES;
        }

        return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
    }
    #pragma mark - TableView Delegate Methods
    - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{
        return noOfSection;
    }
    - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{

        return 1;
    }
    - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
        if(indexPath.section == 2){
            return 200;
        }
        return  50;
    }

    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

        static NSString *CellIdentifier = @"Cell";

        UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
        if (cell == nil) {
            cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];

            UISwitch *switchBtn = [[UISwitch alloc] initWithFrame:CGRectMake(0, 0, 20, 10)];
            cell.accessoryView = switchBtn; 

            [switchBtn addTarget:self action:@selector(switchStateChanged:) forControlEvents:UIControlEventValueChanged];
            cell.textLabel.font = [UIFont systemFontOfSize:14];
            cell.detailTextLabel.font = [UIFont systemFontOfSize:11];
            cell.textLabel.numberOfLines = 2;
            cell.detailTextLabel.numberOfLines = 2;
        }



        if(indexPath.section == 0){
            cell.textLabel.text = @"Cell-1 Text";
            cell.detailTextLabel.text = @"Cell-1 Detail text";
        }
        else if(indexPath.section == 1){
            cell.textLabel.text = @"Cell-2 Text";
        }
        else { // new added section code is here...
            cell.textLabel.text = @"New Added section";
        }
        [cell setSelectionStyle:UITableViewCellSelectionStyleNone];
        return cell;
    }
    -(IBAction)switchStateChanged:(id)sender{
        UISwitch *switchState = sender;

        if(switchState.isOn == YES){
            NSLog(@"ON");
            NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:2];
            [self insertNewSectionWithIndexPath:indexPath];
        }
        else {
            NSLog(@"OFF");
            [self removeSectionWithIndexPath:[NSIndexPath indexPathForRow:0 inSection:2]];
        }
    }
    -(void)insertNewSectionWithIndexPath:(NSIndexPath *)indexPath{


        noOfSection = 3;
        [tblView insertSections:[NSIndexSet indexSetWithIndex:2] withRowAnimation:UITableViewRowAnimationFade];
    }
    -(void)removeSectionWithIndexPath:(NSIndexPath *)indexPath{
        noOfSection = 2;
        [tblView deleteSections:[NSIndexSet indexSetWithIndex:2] withRowAnimation:UITableViewRowAnimationFade];
    }
    @end