View Controller Lifecycle Management [Xibless Version] [MRC]

ViewController.m

#pragma mark -
#pragma mark Controller Lifecycle

// Called once the view controller is initialized in your code
- (id)init
{
    self = [super init];
    if (self) {
        // Initialize iVars that live and die with your controller
        _myList = [[NSMutableArray alloc] initWithCapacity:5];
    }
    return self;
}


// Called once the controller is released 
- (void)dealloc
{
    // Release all iVars
    [_myList release];
    _myList = nil;
    
    [_urlString release];
    _urlString = nil;
    
    // Release all Views you've retained
    self.view = nil;
    [_myLabel release];
    _myLabel = nil;
    
    // Clean up superclass
    [super dealloc];
}


#pragma mark -
#pragma mark View Lifecycle

// Called multiple times whenever the view loads to recreate the view without a XIB file.
- (void)loadView
{
    // Important, don't call [super loadView].
    // See Apple's View Controller Programming Guide (Custom View Controllers) for details.
    UIView* baseView = [[UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]];
    baseView.backgroundColor = [UIColor redColor];
    self.view = baseView;
    [baseView release];
    
    // Top View    
    _myLabel = [[UILabel alloc] initWithFrame:CGRectMake(20, 20, 250, 20)];
    _myLabel.text = @"AppCron";
    [self.view addSubview:_myLabel];
}


// Called multiple times whenever the view loads.
- (void)viewDidLoad
{
    [super viewDidLoad];
    
    // Initialize iVars that life and die with your view
    _urlString = @"www.appcron.com";
}


// Called on unload and memory warnings
- (void)viewDidUnload
{
    [super viewDidUnload];
    
    // Release all Views that can be recreated by loadView
    self.view = nil;
    [_myLabel release];
    _myLabel = nil;
    
    // Release all iVars that can be recreated by viewDidLoad
    [_urlString release];
    _urlString = nil;
}