I want to save everything in a UITableView controller, with a button - iphone

Question

I want to save everything in a UITableView controller, with a button, I dont know how to do that. I know it has a saving method, but when you press back to the homescreen of the app, and go back to the viewcontroller, the text is gone, or when i deleted something its still there.
code in my .m file
#import "HomeWorkViewController.h"
#interface HomeWorkViewController ()
#end
#implementation HomeWorkViewController
#synthesize adView;
#synthesize myTableView, numbers;
-(void) viewDidLoad
{
adView.delegate=self;
[super viewDidLoad];
self.navigationItem.leftBarButtonItem = self.editButtonItem;
// check here if key exists in the defaults or not, if yes the retrieve results in array
if([[NSUserDefaults standardUserDefaults] objectForKey:#"numberArray"] != nil) {
self.numbers = [NSMutableArray arrayWithArray:[[NSUserDefaults standardUserDefaults] objectForKey:#"numberArray"]];
}
//Register for the notification when user go to background or minimize the app, just save the array objects in the defaults
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(appWillGoToBackground:)
name:UIApplicationWillResignActiveNotification object:[UIApplication sharedApplication]];
//Add the Add button
UIBarButtonItem * addButton = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemAdd
target: self action: #selector(insertNewObject)];
self.navigationItem.rightBarButtonItem = addButton;
}
-(void)setEditing:(BOOL)editing animated:(BOOL)animated {
[super setEditing:editing animated:animated];
[self.myTableView setEditing:editing animated:animated];
}
-(void)appWillGoToBackground:(NSNotification *)note {
NSLog(#"terminate");
NSUserDefaults *defaults=[NSUserDefaults standardUserDefaults];
[defaults setObject:self.numbers forKey:#"numberArray"];
[defaults synchronize];
}
-(void)insertNewObject{
//Display a UIAlertView
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Enter HomeWork" message: #"" delegate:self cancelButtonTitle:#"Cancel" otherButtonTitles:#"Ok", nil];
alert.alertViewStyle = UIAlertViewStylePlainTextInput;
[alert show];
}
-(void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
//Only perform the following actions if the user hits the ok button
if (buttonIndex == 1)
{
NSString * tmpTextField = [alertView textFieldAtIndex:0].text;
if(!self. numbers){
self.numbers = [[NSMutableArray alloc]init];
}
[self.numbers insertObject:tmpTextField atIndex:0];
NSIndexPath * indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
[self.myTableView insertRowsAtIndexPaths:#[indexPath]withRowAnimation:UITableViewRowAnimationAutomatic];
}
}
-(NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
return self.numbers.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
static NSString *cellIdentifier = #"cell";
UITableViewCell *cell = [ tableView dequeueReusableCellWithIdentifier:cellIdentifier];
if(cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle: UITableViewCellStyleDefault
reuseIdentifier: cellIdentifier];
}
cell.textLabel.text = [self.numbers objectAtIndex:indexPath.row];
return cell;
}
-(BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath
{
return YES;
}
-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete)
{
//remove our NSMutableArray
[self.numbers removeObjectAtIndex:indexPath.row];
//remove from our tableView
[tableView deleteRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationFade];
}
}
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath
toIndexPath:(NSIndexPath *)toIndexPath
{
}
-(void)bannerViewDidLoadAd:(ADBannerView *)banner
{
adView.hidden=FALSE;
NSLog(#"Has ad, showing");
}
-(void)bannerView:(ADBannerView *)banner didFailToReceiveAdWithError:(NSError *)error
{
adView.hidden=TRUE;
NSLog(#"Has no ads, hiding");
}
-(void)dealloc
{
[adView release];
[super dealloc];
}
- (void)viewDidUnload {
[super viewDidUnload];
}
#end

Answer 1

Looks like you are only saving your data when the application enters the background. If you want to persist the data immediately instead of just when the app closes, just write your array to NSUserDefaults in alertView:clickedButtonAtIndex: