iOS/iPhone Portrait and Landscape Orientation (Objective-C, iPhone, iPad)

//
//  ViewController.h
//
//  Created by Weerachai on 11/2/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController


@property (retain, nonatomic) IBOutlet UIView *portaitMode;
@property (retain, nonatomic) IBOutlet UIView *landscapeMode;

@end

//
//  ViewController.m
//
//  Created by Weerachai on 11/2/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "ViewController.h"
#define deg2rad (3.1415926/180.0)

@interface ViewController ()

@end

@implementation ViewController

@synthesize portaitMode;
@synthesize landscapeMode;

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)dealloc {
    [portaitMode release];
    [landscapeMode release];
    [self setPortaitView:nil];
    [self setLandscapeView:nil];
    [super dealloc];
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Allowed supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortraitUpsideDown ||
            interfaceOrientation == UIInterfaceOrientationPortrait ||
            interfaceOrientation == UIInterfaceOrientationLandscapeLeft ||
            interfaceOrientation == UIInterfaceOrientationLandscapeRight);
}

- (void) willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
    [super willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration];
    
    if (toInterfaceOrientation == UIInterfaceOrientationLandscapeRight)
    {
        self.view=landscapeMode;
        self.view.transform=CGAffineTransformMakeRotation(deg2rad* (90));
        self.view.bounds=CGRectMake(0.0,0.0,480.0,320.0);
    } else if (toInterfaceOrientation == UIInterfaceOrientationLandscapeLeft)
    {
        self.view=landscapeMode;
        self.view.transform=CGAffineTransformMakeRotation(deg2rad* (-90));
        self.view.bounds=CGRectMake(0.0,0.0,480.0,320.0);
    } else if (toInterfaceOrientation == UIInterfaceOrientationPortrait)
    {
        self.view=portaitMode;
        self.view.transform=CGAffineTransformMakeRotation(deg2rad* (0));
        self.view.bounds=CGRectMake(0.0,0.0,320.0,480.0);
    } else
    {
        self.view=portaitMode;
        self.view.transform=CGAffineTransformMakeRotation(deg2rad* (180));
        self.view.bounds=CGRectMake(0.0,0.0,320.0,480.0);
    }
    
}
@end