viewWillAppear est jamais appelé

Question

Possible en double:
iphone viewWillAppear not firing

J'ai un problème, j'ai une application tabBar/NavigationBar. J'essaie d'utiliser viewWillAppear mais rien. Si je mets un NSLog simple, la console ne s'affiche pas. Où est le problème?

-(void)viewDidLoad { 
     [super viewDidLoad]; 

     [self readArgFromDatabaseSottoArgomenti]; 
     [self VisualizzaPreferiti]; 

    } 

    - (void)viewWillAppear:(BOOL)animated { 

NSLog(@"test"); 

     [self VisualizzaPreferiti]; 
     [self.tableView reloadData]; 
    } 

    -(void) readArgFromDatabaseSottoArgomenti { 

     databasePath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"ARGOMENTI.sqlite"]; 

     sqlite3 *databaseDesc; 
     // Init the argoments Array 
     arraySottoArgomenti = [[NSMutableArray alloc] init]; 

     // Open the database from the users filessytem 
     if(sqlite3_open([databasePath UTF8String], &databaseDesc) == SQLITE_OK) { 
      // Setup the SQL Statement and compile it for faster access 
      // const char *sqlStatement = "select * from DESCRIZIONE "; 
      const char *sqlStatement = [[NSString stringWithFormat:@"SELECT * from DESCRIZIONE ORDER BY id"] UTF8String]; 
      sqlite3_stmt *compiledStatement; 
      if(sqlite3_prepare_v2(databaseDesc, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK) { 
       // Loop through the results and add them to the feeds array 
       while(sqlite3_step(compiledStatement) == SQLITE_ROW) { 
        // Read the data from the result row 
        NSString *aID = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)]; 
        NSString *aIDArgomento = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 1)]; 
        NSString *aDescrizione = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 2)]; 
        NSString *aTesto = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 3)]; 

        // Create a new argoments object with the data from the database 
        ContenutoObjectDescrizione *contenutoSottoArgomenti = [[ContenutoObjectDescrizione alloc] initWithName:aID idArgomento:aIDArgomento descrizione:aDescrizione testo:aTesto]; 
        [arraySottoArgomenti addObject:contenutoSottoArgomenti]; 

        [contenutoSottoArgomenti release]; 
       } 
      } 


      // Release the compiled statement from memory 
      sqlite3_finalize(compiledStatement); 

     } 
     sqlite3_close(databaseDesc); 

    } 

    - (void) VisualizzaPreferiti { 

     int i; 

     NSUserDefaults *userPref = [NSUserDefaults standardUserDefaults]; 
     array = [userPref objectForKey:@"array"]; 


     NSLog(@"Retain Count %d Numero ID Array %d",[array retainCount],[array count]); 



     NSMutableArray *arrayOggettoPreferito; 
     arrayOggettoPreferito = [[NSMutableArray alloc] init]; 

     ContenutoObjectDescrizione *oggetto = [[ContenutoObjectDescrizione alloc] init]; 

     for (oggetto in arraySottoArgomenti) { 
      for (i=0; i<[array count]; i++) { 

       if ([[array objectAtIndex:i] intValue] == [oggetto.id intValue]) { 
        [arrayOggettoPreferito addObject:oggetto]; 

        NSLog(@"ID %@ IDMateria %@ Titolo %@",oggetto.id,oggetto.idArgomento,oggetto.descrizione); 
       } 
      } 
     } 

     listaPref = arrayOggettoPreferito; 

     arrayOggettoPreferito=nil; 
     [arrayOggettoPreferito release]; 
     [oggetto release]; 

    } 

    #pragma mark - 
    #pragma mark Table view data source 

    - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
     // Return the number of sections. 
     return 1; 
    } 


    - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 
     // Return the number of rows in the section. 
     return [listaPref count]; 
    } 


    // Customize the appearance of table view cells. 
    - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { 

     static NSString *CellIdentifier = @"Cell"; 

     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
     if (cell == nil) { 
      cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; 
     } 

     ContenutoObjectDescrizione *oggettoCercato = [[ContenutoObjectDescrizione alloc] init]; 
     oggettoCercato = [listaPref objectAtIndex:[indexPath row]]; 

     cell.textLabel.text = oggettoCercato.descrizione; 
     NSLog(@"%@",oggettoCercato.descrizione); 


     return cell; 
    } 

    #pragma mark - 
    #pragma mark Table view delegate 

    - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 

     [tableView deselectRowAtIndexPath:indexPath animated:YES]; 

     TestoViewController *testoViewController = [[TestoViewController alloc] initWithNibName:@"TestoView" bundle:nil]; 
     [self.navigationController pushViewController:testoViewController animated:YES]; 

     ContenutoObjectDescrizione *oggettoCercato = [[ContenutoObjectDescrizione alloc] init]; 
     oggettoCercato = [listaPref objectAtIndex:[indexPath row]]; 

     testoViewController.idPreferito = oggettoCercato.id; 

     testoViewController.title = oggettoCercato.descrizione; 

     NSString *descrizioneWeb = oggettoCercato.testo; 

     NSString *path = [[NSBundle mainBundle] bundlePath]; 
     NSURL *baseURL = [NSURL fileURLWithPath:path]; 

     [testoViewController.vistaWeb loadHTMLString:descrizioneWeb baseURL:baseURL]; 
     [testoViewController release]; 


    } 

    #pragma mark - 
    #pragma mark Memory management 

    - (void)didReceiveMemoryWarning { 
     // Releases the view if it doesn't have a superview. 
     [super didReceiveMemoryWarning]; 

     // Relinquish ownership any cached data, images, etc that aren't in use. 
    } 

    - (void)viewDidUnload { 
     // Relinquish ownership of anything that can be recreated in viewDidLoad or on demand. 
     // For example: self.myOutlet = nil; 
    } 


    - (void)dealloc { 
     [sup 

er dealloc]; 
} 

Answer 1

Ajoutez [super viewWillAppear]; et faites un essai.