iOS UIViewController use

UIViewController use

 

1 appdelegate.m  

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

{

    self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];

    // Override point for customization after application launch.

    self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController" bundle:nil] autorelease];

    self.window.rootViewController = self.viewController;

    [self.window makeKeyAndVisible];

    return YES;

}

2 ViewController.h

  @interface ViewController : UIViewController 

3 viewcontroller.m

- (void)viewWillAppear:(BOOL)animated

{

    [super viewWillAppear:animated];

    self.view.backgroundColor=[UIColor brownColor];

    //UIImage *img = [UIImage imageNamed:@"app_bg.png"];

    //self.view.backgroundColor=[UIColor colorWithPatternImage:img];

 

    if(!self.array)

    {

        self.array=[NSArray arrayWithObjects:@"aa",@"bb",@"cc", nil];

    }

    self.title=@"test";

    UILabel* label1=[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 40, 40)];

    label1.backgroundColor=[UIColor blackColor];

    label1.text=[self.array objectAtIndex:0];

    [self.view addSubview:label1];

}