objective-c : launch with Xib for iPhone and iPad

launch with Xib for iPhone and iPad.m

//launch with Xib for iPhone and iPad

//ex 1.

//DLAppDelegate.h

@class DLViewController;

@interface DLAppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) DLViewController *viewController;

@end


//DLAppDelegate.m

@implementation DLAppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    
    // Override point for customization after application launch.
    if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
        self.viewController = [[DLViewController alloc] initWithNibName:@"DLViewController_iPhone" bundle:nil];
    } else {
        self.viewController = [[DLViewController alloc] initWithNibName:@"DLViewController_iPad" bundle:nil];
    }
    self.window.rootViewController = self.viewController;

    [self.window makeKeyAndVisible];
    
    return YES;
}



//ex 2.

//AppDelegate.h

@class ViewController;

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) ViewController *viewController;

@end



//AppDelegate.m

#import "ViewController.h"

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
	// viewController with XIB
	
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    
    self.viewController = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];
    self.window.rootViewController = self.viewController;

    [self.window makeKeyAndVisible];

    return YES;
}