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    <p>Calling <code>[viewController view]</code> will make sure that a given view controller's XIB is loaded; once it is, you can use any of its other properties normally.</p> <p>Here's what I tend to do:</p> <pre><code>@class Record; // some model object--I assume it has an integer record ID @class DetailViewController; @interface RootViewController : UIViewController { IBOutlet DetailViewController * detailController; } - (void)restore; ... @end @implementation RootViewController // Note: all detailController showings--even ones from within // RootViewController--should go through this method. - (void)showRecord:(Record*)record animated:(BOOL)animated { [self view]; // ensures detailController is loaded [[NSUserDefaults standardUserDefaults] setInteger:record.recordID forKey:@"record"]; detailController.record = record; [self.navigationController pushViewController:detailController animated:animated]; } - (void)restore { int recordID = [[NSUserDefaults standardUserDefaults] integerForKey:@"record"]; if(recordID) { Record * record = [Record recordWithID:recordID]; [rootViewController showRecord:record animated:NO]; // If DetailViewController has its own state to restore, add this here: // [detailController restore]; } } ... - (void)viewDidAppear:(BOOL)animated { [[NSUserDefaults standardUserDefaults] removeObjectForKey:@"record"]; } @end @implementation MyAppDelegate - (void)applicationDidFinishLaunching:(UIApplication*)application { ... [rootViewController restore]; ... } ... @end </code></pre> <p>Each level of the view hierarchy takes care of its own state saving, so the app controller doesn't have to know about all the possible views and which orders they could be in.</p>
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    1. POAnother question about iPhone application state
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    1. COIt seems to be the perfect solution, I will test that as soon as possible. Thanks !
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      1. USRémy Bourgoin
    2. COLoading of all controllers on startup breaks concept of loading them lazily, increasing application startup time and memory usage.
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      1. USKornel
    3. COIt doesn't load all controllers because the subcontroller is not loaded unless the supercontroller has a record ID for it.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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