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POLogical error or is my program skipping parts?
 

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    <p>FYI I'm programming in objective-C but anyone might be able to help. I've been sitting here for the past two hours trying to figure out what the problem is and I've done everything I know to debug this simple little coding problem. Check out the code below and I will explain. In the application, it starts out with MainScreenViewController. My application gives the user two choices...pick a "master" button or "worker" button (basic client-server model). Based upon the user's choice, the application is then supposed to load another view (either MasterViewController or WorkerViewController). Now, when I run the application, if you have followed the print commands and hypothetically pick the "master" button, then in my program, it prints out "masterButtonPressed - Stage 1" and "masterButtonPressed - Stage 2" but nothing else. The view doesn't change either which tells me the problem lies within the code in the AppDelegate section. After I put the print commands in there and run the application, it still does not print the two statements I have in the AppDelegate section. I do have the correct #import statements in the correct files, I just didn't include them here because that takes up useless space. I can compile the code fine with no error and no warnings. Theoretically, what I should be seeing in the console are four lines when I press the "master" button and they are (in order) - "masterButtonPressed - Stage 1", " changeToMaster - Stage 1", "changeToMaster - Stage 2", and "masterButtonPressed - Stage 2". Can someone point out where I've gone wrong? Like I said the view never changes when press the "master" button. Thanks for your help!</p> <p>MainScreenViewController.h</p> <pre><code>@interface MainScreenViewController : UIViewController { } -(IBAction)masterButtonPressed; -(IBAction)workerButtonPressed; @end </code></pre> <p>MainScreenViewController.m</p> <pre><code>@implementation MainScreenViewController -(IBAction)masterButtonPressed { NSLog(@"masterButtonPressed - Stage 1"); [ErwinAppDelegate changeToMaster]; NSLog(@"masterButtonPressed - Stage 2"); } -(IBAction)workerButtonPressed { NSLog(@"workerButtonPressed - Stage 1"); [ErwinAppDelegate changeToWorker]; NSLog(@"workerButtonPressed - Stage 2"); } @end </code></pre> <p>ErwinAppDelegate.h</p> <pre><code>@class MainScreenViewController, MasterViewController, WorkerViewController; @interface ErwinAppDelegate : NSObject &lt;UIApplicationDelegate&gt; { UIWindow *window; MainScreenViewController *mainScreenViewController; MasterViewController *masterViewController; WorkerViewController *workerViewController; } @property(nonatomic, retain) IBOutlet UIWindow *window; @property(nonatomic, retain) IBOutlet MainScreenViewController *mainScreenViewController; @property(nonatomic, retain) IBOutlet MasterViewController *masterViewController; @property(nonatomic, retain) IBOutlet WorkerViewController *workerViewController; -(void)changeToMaster; -(void)changeToWorker; @end </code></pre> <p>ErwinAppDelegate.m</p> <pre><code>@implementation ErwinAppDelegate @synthesize window, mainScreenViewController, masterViewController, workerViewController; - (void)applicationDidFinishLaunching:(UIApplication *)application { // Override point for customization after application launch [window addSubview:mainScreenViewController.view]; [window addSubview:masterViewController.view]; [window addSubview:workerViewController.view]; [window makeKeyAndVisible]; // Bring first view up front [window bringSubviewToFront:mainScreenViewController.view]; } -(void)changeToMaster { NSLog(@"changeToMaster - Stage 1"); [window bringSubviewToFront:masterViewController.view]; NSLog(@"changeToMaster - Stage 2"); } -(void)changeToWorker { NSLog(@"changeToWorker - Stage 1"); [window bringSubviewToFront:workerViewController.view]; NSLog(@"changeToWorker - Stage 2"); } @end </code></pre>
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