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iOS

Posted by Liam Brady
Liam Brady
9,713 Points

iOS Self Destructing Message App - UI Programmatically

After completing the Photo Browser app (which is built completely in code - without Interface Builder), I've taken on the challenge of rebuilding the Self Destructing Message app completely in code.

Conceptually, this doesn't seem too difficult, apart from one section. Unfortunately, this is the first section!

I'm finding it difficult to understand or envisage how I could go about setting up a UITabBarController which is the rootViewController for self.window in AppDelegate.m, and at the same time embed each of the three view controllers (Inbox, Friends, and Camera) within UINavigationControllers.

I have tried to implement this myself, but I'm afraid I'm making it up as I go along and possibly developing bad habits, which I obviously don't want to do.

If someone could give me a high-level overview of how this could be achieved, I'd really appreciate it! You don't necessarily need to write any code, just an explanation of some steps would be perfect.

Thanks!

2 Answers

Thomas Nilsen
Thomas Nilsen
14,957 Points

Nice to see someone else preferring to do stuff programmatically as well :) It should look like this:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    TNInboxViewController *inboxViewController = [[TNInboxViewController alloc] init];
    TNFriendsViewController *friendsViewController = [[TNFriendsViewController alloc] init];
    TNCameraViewController *cameraViewController = [[TNCameraViewController alloc] init];

    UINavigationController *navigationController1 = [[UINavigationController alloc] initWithRootViewController:inboxViewController];

    UINavigationController *navigationController2 = [[UINavigationController alloc] initWithRootViewController:friendsViewController];

    UINavigationController *navigationController3 = [[UINavigationController alloc] initWithRootViewController:cameraViewController];

    UITabBarController *tabBarController = [[UITabBarController alloc] init];
    [tabBarController setViewControllers:@[navigationController1, navigationController2, navigationController3]];

    self.window.rootViewController = tabBarController;
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    return YES;
}
Liam Brady
Liam Brady
9,713 Points
Liam Brady
Liam Brady
9,713 Points

Perfect! Thanks for that.

Have an awesome day.