通过Window-based Application创建项目(一)

#import 

 @interface FirstViewController : UIViewController {

UILabel * label ;

 UIButton * button ; 

 }

@property ( nonatomic, retain) UILabel *label;

 @property ( nonatomic, retain) UIButton *button; 

 @end

#import "FirstViewController.h"

 @implementation FirstViewController

@synthesize label,button; 

 // The designated initializer.  Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad.

 /*

 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {

     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

     if (self) {

         // Custom initialization.

     }

     return self;

 }

 */

 /*

 // Implement loadView to create a view hierarchy programmatically, without using a nib.

 - (void)loadView {

 }

 */

 // Implement viewDidLoad to do additional setup after loading the view, typically from a nib.

- (void )viewDidLoad {

 //create the label

 CGRect frame=CGRectMake (50 , 30 , 200 , 45 );

 label =[[ UILabel alloc] initWithFrame:frame];

 label . text = @"This is a label";

 //create the button

 frame=CGRectMake (50 , 100 , 200 , 45 );

 button =[ UIButton buttonWithType: UIButtonTypeRoundedRect];

 button .frame =frame;

 [ button setTitle: @"OK" forState: UIControlStateNormal];

 //add the label and button into current view.

 [ self . view addSubview: label ];

 [ self . view addSubview: button ];

     [ super viewDidLoad];

 } 

 /*

 // Override to allow orientations other than the default portrait orientation.

 - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {

     // Return YES for supported orientations.

     return (interfaceOrientation == UIInterfaceOrientationPortrait);

 }

 */

 - (void )didReceiveMemoryWarning {

     // Releases the view if it doesn't have a superview.

     [ super didReceiveMemoryWarning];

     // Release any cached data, images, etc. that aren't in use.

 }

 - (void )viewDidUnload {

     [ super viewDidUnload];

     // Release any retained subviews of the main view.

     // e.g. self.myOutlet = nil;

 }

 - (void )dealloc {

[ label release];

 [ button release]; 

     [super dealloc ];

 }

 @end

#import "WinBasedApplicationAppDelegate.h"

#import "FirstViewController.h" 

 @implementation WinBasedApplicationAppDelegate

 @synthesize window;

FirstViewController *firstViewController; 

 #pragma mark -

 #pragma mark Application lifecycle

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

     // Override point for customization after application launch.

     firstViewController=[[FirstViewController alloc] initWithNibName:nil bundle:nil];

 [self.window addSubview:firstViewController.view]; 

     [self.window makeKeyAndVisible];

     return YES;

 }

 - (void)applicationWillResignActive:(UIApplication *)application {

     /*

      Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.

      Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.

      */

 }

 - (void)applicationDidEnterBackground:(UIApplication *)application {

     /*

      Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later. 

      If your application supports background execution, called instead of applicationWillTerminate: when the user quits.

      */

 }

 - (void)applicationWillEnterForeground:(UIApplication *)application {

     /*

      Called as part of  transition from the background to the inactive state: here you can undo many of the changes made on entering the background.

      */

 }

 - (void)applicationDidBecomeActive:(UIApplication *)application {

     /*

      Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.

      */

 }

 - (void)applicationWillTerminate:(UIApplication *)application {

     /*

      Called when the application is about to terminate.

      See also applicationDidEnterBackground:.

      */

 }

 #pragma mark -

 #pragma mark Memory management

 - (void)applicationDidReceiveMemoryWarning:(UIApplication *)application {

     /*

      Free up as much memory as possible by purging cached data objects that can be recreated (or reloaded from disk) later.

      */

 }

 - (void)dealloc {

[firstViewController release]; 

     [window release];

     [super dealloc];

 }

 @end