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POcannot set the text of label in DetailViewController after passing data between different viewController
 

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  1. POcannot set the text of label in DetailViewController after passing data between different viewController
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    <p>pass data from FirstViewController to DetailViewController. i can not set the text of label in DetailViewController; FirstViewController is a tableview and it is good.</p> <p>i use method updateRowNumber to set the rowNumber . and in DetailViewController, i can use debugger to see the rowNumber is correct. but the label's text is not showed on the view.</p> <p>anyone can help me out?</p> <p>in my FirstViewController</p> <pre><code>- (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { if (dvController == nil) { DetailViewController *aController = [[DetailViewController alloc] initWithNibName:@"DetailViewController" bundle:nil]; self.dvController = aController; [aController release]; } [[self navigationController] pushViewController:dvController animated:YES]; [dvController updateRowNumber:indexPath.row]; } </code></pre> <p>in my DetailViewController.h</p> <pre><code>#import &lt;UIKit/UIKit.h&gt; @interface DetailViewController : UIViewController { int rowNumber; IBOutlet UILabel *message; } @property(readwrite) int rowNumber; @property(nonatomic, retain) IBOutlet UILabel *message; - (void) updateRowNumber:(int) theindex; @end </code></pre> <p>in my DetailViewController.m</p> <pre><code>#import "DetailViewController.h" @interface DetailViewController () @end @implementation DetailViewController @synthesize message, rowNumber; - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization } return self; } - (void) updateRowNumber: (int) theindex { rowNumber = theindex + 1; message.text = [NSString stringWithFormat:@"row %i was clicked", rowNumber]; } - (void)dealloc { [message release]; [super dealloc]; } - (void)viewDidLoad { message.text = [NSString stringWithFormat:@"row %i was clicked ", rowNumber]; [super viewDidLoad]; // Do any additional setup after loading the view from its nib. } - (void)viewDidUnload { [super viewDidUnload]; // Do any additional setup after loading the view from its nib. } - (void)viewWillAppear:(BOOL)animated { //message.text = [NSString stringWithFormat:@"row %i was clicked ", rowNumber]; [super viewWillAppear: animated]; } - (void)viewDidAppear:(BOOL)animated { [super viewDidAppear: animated]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } @end </code></pre>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USmax
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. CODid you set IBOutlet to your label in xib?
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      1. POcannot set the text of label in DetailViewController after passing data between different viewController
      1. USRahul Wakade
    2. COi do not use xib, i use programmatically
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      1. POcannot set the text of label in DetailViewController after passing data between different viewController
      1. USmax
    3. COYou have neither created label nor added on view. Check following code - (void)viewDidLoad { [super viewDidLoad]; message = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 320, 40)]; [self.view addSubview:message]; message.text = [NSString stringWithFormat:@"row %i was clicked ", rowNumber]; }
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      1. POcannot set the text of label in DetailViewController after passing data between different viewController
      1. USRahul Wakade
 

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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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