NSMutbleArray - 添加/刪除與屬性的對象 - 泄漏

我有我的應用程序泄漏問題。NSMutbleArray - 添加/刪除與屬性的對象 - 泄漏

我想添加和刪除對象到NSMutableArray。

這裏是類Demande：

@interface Demande : NSObject { 
//attibuts de la classe demande 
NSString *demId; 
NSString *demStatut; 
NSString *demTitle; 
NSString *demCreated; 
NSString *demIdCopro; 
NSString *demIdImmeuble; 
NSString *demIdLot; 
NSString *demDescriptif; 
NSString *demAuteur; 
NSString *demIdAuteur; 
NSString *demLoginAuteur; 
} 
@property (retain,nonatomic) NSString *demId; 
@property (retain,nonatomic) NSString *demIdCopro; 
@property (retain,nonatomic) NSString *demIdImmeuble;  
@property (retain,nonatomic) NSString *demIdLot; 
@property (retain,nonatomic) NSString *demDescriptif; 
@property (retain,nonatomic) NSString *demStatut; 
@property (retain,nonatomic) NSString *demTitle; 
@property (retain,nonatomic) NSString *demCreated; 
@property (retain,nonatomic) NSString *demAuteur; 
@property (retain,nonatomic) NSString *demIdAuteur; 
@property (retain,nonatomic) NSString *demLoginAuteur; 
@end 


#import "Demande.h" 
@implementation Demande 

@synthesize demId,demIdCopro,demIdImmeuble,demIdLot,demDescriptif,demStatut,demTitle,demCreated,demAuteur,demIdAuteur,demLoginAuteur; 

- (void)dealloc { 

[demId release]; 
[demIdCopro release]; 
[demId release]; 
[demIdImmeuble release]; 
[demIdLot release]; 
[demDescriptif release]; 
[demStatut release]; 
[demTitle release]; 
[demCreated release]; 
[demAuteur release]; 
[demIdAuteur release]; 
[demLoginAuteur release];  
[super dealloc]; 

} 
@end

我嘗試MyTableViewController做：

@interface MyTableViewController : UITableViewController { 

IBOutlet UITableView *tableV; 
NSMutableArray *tab_Demandes; 
} 
@end 

@implementation MyTableViewController 

- (void)requestDReloadDone:(ASIHTTPRequest *)request 
{ 

NSData *responseData = [request responseData]; 

NSString *jsonString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]; 
//NSLog(@"JSON: %@",jsonString); 

NSDictionary *results = [jsonString JSONValue]; 

NSArray *demandes = [results objectForKey:@"Demandes"]; 

    [tab_Demandes removeAllObjects]; // -------- CRASH HERE !!!, except the first time through the method because the array is empty 

    for (NSDictionary *demandeD in demandes) 
{ 

    //parse du JSON 
    NSString *titre = [demandeD objectForKey:@"Title"]; 
    NSString *desriptif = [demandeD objectForKey:@"Description"]; 
    NSString *Id = [demandeD objectForKey:@"Id"]; 
    NSString *created = [demandeD objectForKey:@"Created"]; 
    NSString *statut = [demandeD objectForKey:@"Statut"]; 
    NSString *copropriete = [demandeD objectForKey:@"Copropriete"]; 
    NSString *immeuble = [demandeD objectForKey:@"Immeuble"]; 
    NSString *lot = [demandeD objectForKey:@"Lot"]; 
    NSString *auteur = [demandeD objectForKey:@"Author"]; 
    NSString *auteurId = [demandeD objectForKey:@"IdAuthor"]; 
    NSString *auteurLogin = [demandeD objectForKey:@"Login"]; 

    //Creation de l'objet 
    Demande *dem =[[Demande alloc] init];  
    dem.demTitle=titre; 
    dem.demId=Id; 
    dem.demCreated=created; 

    NSString *descriptifDecode = [desriptif stringByReplacingPercentEscapesUsingEncoding: 
            NSASCIIStringEncoding];  

    dem.demDescriptif=descriptifDecode; 
    dem.demIdCopro=copropriete; 
    dem.demIdImmeuble=immeuble; 
    dem.demIdLot=lot; 
    dem.demStatut=statut; 
    dem.demAuteur=auteur; 
    dem.demIdAuteur=auteurId; 
    dem.demLoginAuteur=auteurLogin; 

    [tab_Demandes addObject:dem]; 

    [dem release]; 
} 

[tableV reloadData]; 

[jsonString release]; 
}

在首批推出的應用我的數組tab_Demandes是空的，所以一切都很好[removeAllObjects ]工作，因爲它沒有任何對象。當我重新加載tab_Demandes我需要清除它。

- (void)dealloc { 
    /* 
[demId release]; 
[demIdCopro release]; 
[demId release]; 
[demIdImmeuble release]; 
[demIdLot release]; 
[demDescriptif release]; 
[demStatut release]; 
[demTitle release]; 
[demCreated release]; 
[demAuteur release]; 
[demIdAuteur release]; 
[demLoginAuteur release]; 
    */ 
[super dealloc]; 
}

在Demande類我則可以在TableViewController做

[tab_Demandes removeAllObjects]

：當應用程序崩潰

我意識到，如果我這樣做的。

但後來我有屬性泄漏每個對象Demande。這就像當我做[dem release]時，屬性也是rleased，當我想要從我的tab_Demandes [removeAllObjects]中執行時，沒有屬性可以發佈，並且我得到一個Bad_Access。

如果任何人有一個想法......

編輯：cellForROw方法：

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {  

static NSString *CellIdentifier = @"Cell";  
CustomCellViewController *cell = (CustomCellViewController *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
if (cell == nil) 
{ 
    // NSLog(@"Cell created"); 
    NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"CustomCellViewController" owner:nil options:nil]; 

    for(id currentObject in topLevelObjects) 
    { 
     if([currentObject isKindOfClass:[CustomCellViewController class]]) 
     { 
      cell = (CustomCellViewController *)currentObject; 
      break; 
     } 
    } 
} 

    // Set up the cell... 

    cell.lbl_demId.text=[NSString stringWithFormat:@"%@", [[tab_Demandes objectAtIndex:indexPath.row ] demId]]; 
    cell.lbl_demCopro .text=[NSString stringWithFormat:@"%@", [[tab_Demandes objectAtIndex:indexPath.row] demIdCopro ]]; 
    cell.lbl_demImmeuble.text=[NSString stringWithFormat:@"%@", [[tab_Demandes objectAtIndex:indexPath.row] demIdImmeuble]]; 
    cell.lbl_demLot.text=[NSString stringWithFormat:@"%@", [[tab_Demandes objectAtIndex:indexPath.row] demIdLot]]; 
    cell.lbl_demDescriptif.text=[NSString stringWithFormat:@"%@", [[tab_Demandes objectAtIndex:indexPath.row] demTitle]]; 
    if ([[[tab_Demandes objectAtIndex:indexPath.row] demStatut] isEqualToString: @"Validée"]) 
    { 
    cell.lbl_ImageView.image=[UIImage imageNamed:@"VDEM2.png"]; 
    } 
    if([[[tab_Demandes objectAtIndex:indexPath.row] demStatut] isEqualToString: @"Initiée"]) 
    { 
     cell.lbl_ImageView.image=[UIImage imageNamed:@"IDEM.png"]; 
    } 
    if([[[tab_Demandes objectAtIndex:indexPath.row] demStatut] isEqualToString: @"Terminée"]) 
    { 
    cell.lbl_ImageView.image=[UIImage imageNamed:@"TDEM.png"]; 
    } 
    if([[[tab_Demandes objectAtIndex:indexPath.row] demStatut] isEqualToString: @"En coursée"]) 
    { 
    cell.lbl_ImageView.image=[UIImage imageNamed:@"EDEM.png"]; 

    } 

return cell;  
}

來源

2010-09-24 wallou

你有沒有試過非原子，保留，而不是保留，非原子。我知道這聽起來很愚蠢，但以防萬一...... – VdesmedT 2010-09-24 12:15:45

嘿VdesmedT ;-)。我試過非原子，保留，沒有改變任何東西。我需要在將它們添加到tab_Demandes後立即釋放dem對象嗎？這是一個正確的方法嗎？當我釋放對象時是否釋放對象屬性？ – wallou 2010-09-24 12:23:18

tab_Demandes只有指向dem對象的指針。如果我做dem釋放也許如果屬性被釋放，當我嘗試做removeAllObjects也許指針仍然參照已經發布的屬性？ – wallou 2010-09-24 12:27:32

凡tab_Demandes被intialized？

僅在.h文件中聲明它是不夠的，您還必須告訴編譯器分配並初始化它。

一個簡單的修正可能與

if(!tab_Demandes) { // tab_Demandes is nil and has not previously been created 
    tab_Demandes = [[NSMutableArray arrayWithCapacity:10] retain]; 
} else { 
    [tab_Demandes removeAllObjects]; 
}

被替換線[tab_Demandes removeAllObjects];不要忘了[tab_Demandes release]在dealloc方法

來源

2010-09-24 13:18:28 TomH

NSMutbleArray - 添加/刪除與屬性的對象 - 泄漏

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