saving data in textfields and creating delegates - iphone

Question

Trying to get a textfield to save data automatically and store it, I want to be able to go back to the view and the data remain until its edited again.
so far I have this...
#interface TableDatabaseViewController : UIViewController <UITextFieldDelegate>
{
Tables*table;
NSArray * tables;
IBOutlet UITextField * surname;
IBOutlet UITextField * seatNo;
IBOutlet UISegmentedControl * occupied;
IBOutlet UITextField * numberLabel;
int tapCount;
id <TableInfoDelgate> modTable;
}
#property (nonatomic, retain) Tables*table;
#property (nonatomic, retain) NSArray * tables;
#property (nonatomic, retain) IBOutlet UITextField * surname;
#property (nonatomic, retain) IBOutlet UITextField * seatNo;
#property (nonatomic, retain) IBOutlet UISegmentedControl* occupied;
#property (nonatomic, retain) id <TableInfoDelgate> modTable;
#property (nonatomic, retain) IBOutlet UITextField * numberLabel;
#property int tapCount;
-(id)initWithTables:(Tables*)t;
//-(void)myFunction;
#end
#synthesize table, numberLabel,tables,tapCount, modTable, seatNo,surname, occupied;
- (void)dealloc
{
self.numberLabel =nil;
self.surname = nil;
self.table = nil;
self.seatNo = nil;
[super dealloc];
}
- (void)didReceiveMemoryWarning
{
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
-(void)myFunction
{
AddTableViewController * createController = [[AddTableViewController alloc] initWithNibName:#"AddTableViewController" bundle:nil];
[self.navigationController pushViewController:createController animated:YES];
[createController release];
}
- (void)viewDidLoad
{
UIBarButtonItem * theButton = [[UIBarButtonItem alloc] initWithTitle:#"Order" style:UIBarButtonItemStyleBordered target:self action:#selector(myFunction)];
self.navigationItem.rightBarButtonItem = theButton;
[theButton release];
self.tables = [TableListBuilder getTables];
self.numberLabel.text = [NSString stringWithFormat:#"%#", self.table.number];
self.seatNo.text = self.table.seats;
self.surname.text = self.table.surname;
// self.occupied.text = self.table.occupied;
[super viewDidLoad];
}
-(void)viewWillDisappear:(BOOL)animated
{
[super viewWillDisappear:NO];
[self.modTable modifyTableatIndex: nil andsurname:self.surname.text andseatNo:self.seatNo.text andoccupied: self.occupied];
}
I also created a delegate which is:
#protocol TableInfoDelgate <NSObject>
-(void) modifyTableatIndex: (int) index andsurname: (NSString*) surname andseatNo: (NSString*) seatNo andoccupied: (BOOL) occupied;
#end
data in the textfield is not saving. Thanks

Answer 1

What does this function do?
-(void) modifyTableatIndex: (int) index andsurname: (NSString*) surname andseatNo: (NSString*) seatNo andoccupied: (BOOL) occupied;
For storing simple values look into NSUserDefaults
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[textField setText:[[NSUserDefaults standardUserDefaults] objectForKey:#"storedTextValue"];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
[[NSUserDefaults standardUserDefaults] setObject:textField.text forKey:#"storedTextValue"];
[[NSUserDefaults standardUserDefaults] synchronize];
}