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POA UIlabel issue: Keep the string value after app is closed?
 

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  1. POA UIlabel issue: Keep the string value after app is closed?
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    <p>So one of the users in here managed to show me how to pass data from a child view controller to a parent view controller via a string.</p> <p>So now the string is passed, BUT, i want that value to stay displayed on the firstViewController after the app is closed and re-opened.</p> <p>The value is saved in with NSUserDefaults by the way and with an NSLog i am seeing on the conosole it is saved in the apps folder but that value isnt saved onto the UILabel display. </p> <p>It only displays it when i put save but then i close and reopen, it dissappears but in an NsLog it is still inside the app but not on display UILabel.</p> <p>How can i address this ?</p> <p>On my appDelegate.h i have a </p> <pre><code> @property (strong, nonatomic) NSString *sharedString; </code></pre> <p>To pass the secondViewController data to the firstViewController.</p> <p>In the save method on my secondViewController i have a function related to the AppDelegate.h declaration which is:</p> <pre><code>AppDelegate *apiDelegate = [[UIApplication sharedApplication] delegate] apiDelegate.sharedString = self.textFieldData.text; </code></pre> <p>And in my firstViewController i have a method which display the data from the second viewController:</p> <pre><code> -(void) viewDidAppear:(BOOL)animated { AppDelegate *apiDelegate = [[UIApplication sharedApplication] delegate] self.DisplayData.text = appDelegate.sharedString; [super viewDidAppear: NO]; </code></pre> <p>Is there something wrong which isnt keeping the data intact after app closes or am I missing something here ? </p>
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    1. COWhy not just populate it from NSUserDefaults? And are you synthesizing the sharedString in the appdelegate?
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    2. COYou might also want to change [super viewDidAppear: NO]; to [super viewDidAppear: animated];
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    3. COI would recommend you not use the app delegate to pass data between classes. There are better methods such as public properties, delegates, etc. that are better coding practice.
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