• Click on XYZMyViewController.m in navigation area







• Write the below highlighted code:








Code:

@synthesize lblDisplayText;

-(IBAction)btnDisplay:(id)sender
{
lblDisplayText.text =@ "HELLO WORLD!!";
}

• Go to XYZAppDelegate.m and write the below highlighted code:








Code:

- (BOOL)application:(UIApplication
*)applicationdidFinishLaunchingWithOptions:
(NSDictionary *)launchOptions
{
self.window = [[UIWindowalloc]
initWithFrame:[[UIScreenmainScreen] bounds]];
// self.window.backgroundColor = [UIColorwhiteColor];
XYZMyViewController
*xyzMyViewController=[[XYZMyViewControlleralloc]init];
self.window.rootViewController=xyzMyViewController;

[self.windowmakeKeyAndVisible];
returnYES;
}

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