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POSave the current status when quit, auto-reload when re-open the app
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copied!<p>I'm creating a simple app to simply save a person's name and a number associated with this person. I've created a class for person like this:</p> <pre><code>@interface Person : NSObject { NSString *name; NSInteger serialNumber; } </code></pre> <p>In the mainViewController, I've created an input text field to enter the name and then automatically assign a number to the person, also 2 UILabel to show the inputted name and the serialNumber.</p> <p>However, after quitting the app and re-open, all labels cleared. What I'm trying to do is to keep these variables as they were when quitting the app and display in the labels. Hence, I created 2 variables in the app delegate and tried to use applicationWillTerminate: in the app delegate to save . In the mainViewController I've inserted these codes after each time I typed in a new name:</p> <pre><code>NameAppDelegate *appDelegate = (NameAppDelegate *)[[UIApplication sharedApplication] delegate]; appDelegate.lastPerson.name = aPerson.name; //currentPerson is an instance variable of the app delegate appDelegate.lastPerson.serialNumber = aPerson.serialNumber; NSLog(@"aPerson.serialNumber = %i", aPerson.serialNumber); NSLog(@"appDelegate.lastPerson.serialNumber = %i", appDelegate.lastPerson.serialNumber); </code></pre> <p>However, each time I typed a new name, <strong>the console showed a change in aPerson.serialNumber (which is in mainViewController) BUT not the appDelegate.lastPerson.serialNumber</strong> (which is always equal to zero).</p> <p>Is there anything wrong with the codes above? </p>

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