How to Implement Appdelegate to a Viewcontroller Using SplashScreen.

#import <UIKit/UIKit.h>

@class SplashScreenViewController;

@interface ExampleAppDelegate : NSObject <UIApplicationDelegate>

{

    UIWindow *window;

SplashScreenViewController *splashScreen;

BOOL shouldLoadSplashScreen;

UIImageView *imageView;

id lastViewController;

}

@property (nonatomic, retain) IBOutlet UIWindow *window;

@property (nonatomic, retain) id lastViewController;

-(void)setCurrentView:(UIViewController*)viewControllerObj;

@end

#import "ExampleAppDelegate.h"

#import "SplashScreenViewController.h"

#import "LoginViewController.h"

@implementation ExampleAppDelegate

@synthesize window;

@synthesize lastViewController;

-(void)setCurrentView:(UIViewController*)currentViewControllerObj

{

[[(UIViewController*)self.lastViewController view] removeFromSuperview];

self.lastViewController = currentViewControllerObj;

[self.window addSubview:currentViewControllerObj.view];

}

-(void)loadMenuScreen

{

[imageView removeFromSuperview];

LoginViewController *menuViewController = [[LoginViewController alloc] init];

[self.window addSubview:menuViewController.view];

self.lastViewController = menuViewController;

}

-(void)loadSplashScreen

{

imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 768, 1024)];

[imageView setImage:[UIImage imageNamed:@"SplashScreen.png"]];

[self.window addSubview:imageView];

[imageView release];

[self performSelector:@selector(loadMenuScreen) withObject:nil afterDelay:3.0];

}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 

{    

    

[[UIApplication sharedApplication] setStatusBarHidden:YES];

[self loadSplashScreen];

    [self.window makeKeyAndVisible];

return YES;

}

- (void)applicationWillResignActive:(UIApplication *)application 

{

   shouldLoadSplashScreen = YES;

}

#pragma mark -

#pragma mark Memory management

- (void)applicationDidReceiveMemoryWarning:(UIApplication *)application 

{

    

}

- (void)dealloc 

{

    [window release];

    [super dealloc];

}

@end

#import <UIKit/UIKit.h>

@interface SplashScreenViewController : UIViewController

{

}

@end

#import "SplashScreenViewController.h"

@implementation SplashScreenViewController

- (void)viewDidLoad 

{

    [super viewDidLoad];

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

return ((interfaceOrientation ==UIInterfaceOrientationLandscapeLeft) ||       (interfaceOrientation == UIInterfaceOrientationLandscapeRight ));

}

- (void)didReceiveMemoryWarning 

{

    [super didReceiveMemoryWarning];

}

- (void)viewDidUnload 

{

    [super viewDidUnload];

}

- (void)dealloc 

{

    [super dealloc];

}

@end

#import <UIKit/UIKit.h>

@interface LoginViewController : UIViewController <UITextFieldDelegate,UIAlertViewDelegate>

{

UITextField *IDtextFld;

UITextField *PaswordtextFld;

}

@end

#import "LoginViewController.h"

#import "OutletDetailsViewController.h"

#import "ExampleAppDelegate.h"

@implementation LoginViewController

- (void)viewDidLoad 

{

    [super viewDidLoad];

IDtextFld = [[UITextField alloc]initWithFrame:CGRectMake(420, 348, 420, 50)];

[IDtextFld setDelegate:self];

[IDtextFld setBorderStyle:UITextBorderStyleLine];

[IDtextFld setBackgroundColor:[UIColor clearColor]];

[self.view addSubview:IDtextFld];

[IDtextFld release];

PaswordtextFld= [[UITextField alloc]initWithFrame:CGRectMake(420, 432, 423, 52)];

[PaswordtextFld setDelegate:self];

[PaswordtextFld setBorderStyle:UITextBorderStyleLine];

[self.view addSubview:PaswordtextFld];

[PaswordtextFld release];

UIButton *SubmitButton = [UIButton buttonWithType:UIButtonTypeCustom];

[SubmitButton setImage:[UIImage imageNamed:@"LgnSubmitBtn.png"]   forState:UIControlStateNormal];

[SubmitButton setFrame:CGRectMake(455, 547, 215, 63)];

[SubmitButton addTarget:self action:@selector(SubmitButton:) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:SubmitButton];

}

-(void)SubmitButton:(id)sender

{

NSString *Id = IDtextFld.text ;

NSLog(@"ID is ==>>%@",Id);

NSString *pwd = PaswordtextFld.text ;

NSLog(@"Password ==>>%@",pwd);

OutletDetailsViewController *odvObject = [[OutletDetailsViewController alloc] init];

ExampleAppDelegate *delegate = (ExampleAppDelegate*)[[UIApplication sharedApplication]delegate];

[delegate setCurrentView:odvObject];

}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 

{

return ((interfaceOrientation ==UIInterfaceOrientationLandscapeLeft) || (interfaceOrientation == UIInterfaceOrientationLandscapeRight ));

}

- (void)didReceiveMemoryWarning 

{

    [super didReceiveMemoryWarning];

}

- (void)viewDidUnload 

{

    [super viewDidUnload];

}

- (void)dealloc

{

    [super dealloc];

}