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    <p>You don't need to use NSUserDefaults to pass data between view controllers. You can set the string in BBBViewController in the prepareForSegue method of AAAViewController</p> <p>AAAViewController.m:</p> <pre><code>@implementation AAAViewController { NSString *libraryFile; } -(IBAction)pressedAAA { libraryFile = [[NSBundle mainBundle] pathForResource:@"AAA" ofType:@"plist"]; } -(IBAction)pressedBBB { libraryFile = [[NSBundle mainBundle] pathForResource:@"BBB" ofType:@"plist"]; } -(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { BBBViewController* vc = (BBBViewController *)segue.destinationViewController; vc.libraryFile = libraryFile; } </code></pre> <p>BBBViewController.h:</p> <pre><code>@property (strong, nonatomic) NSString *libraryFile; </code></pre> <p><strong>EDIT:</strong> prepareForSegue will be called before your IBAction methods. To fix this, give each button a unique tag in interface builder and determine which button was pressed inside of the prepareForSegue method: </p> <pre><code>-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { UIButton *tappedButton = (UIButton *)sender; NSString *libraryFile; switch (tappedButton.tag) { case 0: libraryFile = [[NSBundle mainBundle] pathForResource:@"AAA" ofType:@"plist"]; break; case 1: libraryFile = [[NSBundle mainBundle] pathForResource:@"BBB" ofType:@"plist"]; break; case 2: libraryFile = [[NSBundle mainBundle] pathForResource:@"CCC" ofType:@"plist"]; break; default: break; } BBBViewController* vc = (BBBViewController *)segue.destinationViewController; vc.libraryFile = libraryFile; } </code></pre>
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    1. USMark Stratis
    1. USMark Stratis
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    1. COThanks for a quick response. I added your code but have an issue. In ViewDidLoad in BBBViewControler to collect my library file I added: myGroup = [[NSDictionary alloc] initWithContentsOfFile:libraryFile]; I am receiving an error: "Use of undeclared identifier libraryFile…" Should I change it into _libraryFile?
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      1. USRobert Wojtczak
    2. CONo problem! As for the error, you have three options: 1) Change it to _libraryFile 2) Change it to self.libraryFile 3) Right under the implementation in BBBViewController.m you could synthesize the variable with "@synthesize libraryFile;" and you'll be able to refer to it in the code the same way you currently are
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    3. COYes, I synthesized it. Now, generally it works but I still have a problem with displaying lists from the previous choice (from the button that was pressed 1 time before). And if I press a button for the first time - the list is empty.
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      1. USRobert Wojtczak
 

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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.

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