iOS/iPhone Change View Startup Open First (Objective-C, iPhone, iPad)

#import <UIKit/UIKit.h>

@class PageViewController2;

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@property (strong, nonatomic) PageViewController2 *pageView2;

@end

#import "AppDelegate.h"

#import "PageViewController2.h"

@implementation AppDelegate

- (void)dealloc
{
    [_window release];
    [_pageView2 release];
    [super dealloc];
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
    // Override point for customization after application launch.
    self.pageView2 = [[[PageViewController2 alloc] initWithNibName:@"PageViewController2" bundle:nil] autorelease];
    self.window.rootViewController = self.pageView2;
    [self.window makeKeyAndVisible];
    return YES;
}