NSArray coming back as null when called from NSNotificationCenter - cocoa

Question

I have an NSMutableArray being saved with NSUserDefaults, when appLaunched is called the array returns null but when called by any other function it returns what is in the array. Anybody know what's happening?
- (id)init
{
[super init];
theArray = [[NSMutableArray alloc] init];
theArray = [[NSUserDefaults standardUserDefaults] objectForKey:#"TheArray"];
if(!theArray) {
theArray = [[NSMutableArray alloc] init];
} else {
theArray = [[NSMutableArray alloc] initWithArray:theArray];
};
// NSLog(#"%#", theArray);
[[NSUserDefaults standardUserDefaults] setObject:theArray forKey:#"TheArray"];
// NSLog(#"Is saving");
return self;
}
-(IBAction)addNewProcess:(id)sender
{
NSString *newProcess = [theField stringValue];
[theArray addObject:newProcess];
[theField setStringValue:#""];
NSLog(#"%#", theArray);
[theTable reloadData];
}
-(IBAction)removeProcess:(id)sender
{
int listRow = [theTable selectedRow];
NSLog(#"%d", listRow);
if (listRow < 0) return;
[theArray removeObjectAtIndex:listRow];
[theTable reloadData];
}
-(IBAction)save:(id)sender
{
NSLog(#"%#", theArray);
int count = [theArray count];
NSLog(#"%i", count);
[[NSUserDefaults standardUserDefaults] setObject:theArray forKey:#"TheArray"];
NSLog(#"Is saving");
}
- (NSInteger)numberOfRowsInTableView:(NSTableView *)tableView
{
return [theArray count];
}
- (id)tableView:(NSTableView *)tableView
objectValueForTableColumn:(NSTableColumn *)tableColumn
row:(NSInteger)row
{
return [theArray objectAtIndex:row];
}
- (void)tableView:(NSTableView *)tableView
setObjectValue:(id)object
forTableColumn:(NSTableColumn *)tableColumn
row:(NSInteger)row
{
[theArray replaceObjectAtIndex:row
withObject:object];
}
-(void)appLaunched:(NSNotification *)note
{
NSLog(#"%#", theArray);
}
#end

Answer 1

You didn't synchronize your NSUserDefaults.
Every time you use [[NSUserDefaults standardUserDefaults] setObject:someObject forKey:#"someKey"]; you have to use [[NSUserDefaults standardUserDefaults] synchronize]; afterwords.