Passing information between viewControllers in Storyboard - ios

Question

I am learning how to use storyboards by making a very simple app. On the main view controller (InfoViewController), I have a textField by the name: nameField. After entering text in this field, when I enter the save button, the text should should get appended to the array (list) (declared in TableViewController) and be displayed on the table in TableViewController.
Also, the segue identifier is: GoToTableViewController.
However, the text does not get passed from nameField to the list (array). At first, I assumed that I was making some mistake with the textField. So I replaced it with a static text. But that did not help either. Then I checked if the string has been added to the array by using NSLog() , but every time I get Null. From my understanding, the list (array) is not created until TableViewController is loaded. For that reason, I alloc and init list in InfoViewController. But it does not help.
Can somebody please help me find out the mistake that I am making?
Thanks!
Relevant sections of my code are as follows:
InfoViewController.h
#import <UIKit/UIKit.h>
#class TableViewController;
#interface InfoViewController : UIViewController
#property (weak, nonatomic) IBOutlet UITextField *nameField;
#property (strong, nonatomic) TableViewController *tableViewController;
#end
InfoViewController.m
#import "InfoViewController.h"
#import "TableViewController.h"
#implementation InfoViewController
#synthesize nameField;
#synthesize tableViewController;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
tableViewController = [[TableViewController alloc] init];
tableViewController.list = [[NSMutableArray alloc] init];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([segue.identifier isEqual:#"GoToTableViewController"])
{
/* Pass data to list and then reloadTable data */
tableViewController = segue.destinationViewController;
tableViewController.infoViewController = self;
// (*) [tableViewController.list addObject:nameField.text];
// (*) [tableViewController.list addObject:#"Hi!"];
[tableViewController.list insertObject:#"Hi" atIndex:0];
// (**) NSLog(#"%#", [tableViewController.list objectAtIndex:0]);
[tableViewController.tableView reloadData];
}
}
#end
( * ) I inserted these statements to see if I was making a mistake with using the value in nameField.
( ** ) This statement is meant to check the value inserted in the array.
TableViewController.h
#import <UIKit/UIKit.h>
#class InfoViewController;
#interface TableViewController : UITableViewController
#property (nonatomic, strong) NSMutableArray *list;
#property (strong, nonatomic) InfoViewController *infoViewController;
#end
TableViewController.m
#import "TableViewController.h"
#import "InfoViewController.h"
#implementation TableViewController
#synthesize list;
#synthesize infoViewController;
- (void)viewDidLoad
{
[super viewDidLoad];
self.navigationItem.rightBarButtonItem = self.editButtonItem;
list = [[NSMutableArray alloc] init];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{ return 1; }
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{ return list.count; }
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
cell.textLabel.text = [list objectAtIndex:indexPath.row];
return cell;
}
#end

Answer 1

Reload the table in viewWillAppear method of tableViewController:
[tableViewController.tableView reloadData];