用於存儲plist數據的泄漏自定義對象

Question

我製作了一個非常簡單的自定義對象pictureData。

這裏是.h文件

#import <Foundation/Foundation.h> 

@interface pictureData : NSObject { 
    NSString *fileName; 
    NSString *photographer; 
    NSString *title; 
    NSString *license; 
} 

@property (nonatomic, retain) NSString  *fileName; 
@property (nonatomic, retain) NSString  *photographer; 
@property (nonatomic, retain) NSString  *title; 
@property (nonatomic, retain) NSString  *license; 

+(pictureData*)picDataWith:(NSDictionary*)dictionary; 

@end 

.m文件

#import "pictureData.h" 

@implementation pictureData 

@synthesize fileName; 
@synthesize photographer; 
@synthesize title; 
@synthesize license; 

+ (pictureData*)picDataWith:(NSDictionary *)dictionary { 

    pictureData *tmp = [[[pictureData alloc] init] autorelease]; 

    tmp.fileName = [dictionary objectForKey:@"fileName"]; 
    tmp.photographer = [dictionary objectForKey:@"photographer"]; 
    tmp.title = [dictionary objectForKey:@"title"]; 
    tmp.license = [dictionary objectForKey:@"license"]; 

    return tmp; 
} 

-(void)dealloc { 
    [fileName release]; 
    [photographer release]; 
    [title release]; 
    [license release]; 
} 

@end 

我然後設置這些對象的數組，像這樣：

NSString *path = [[NSBundle mainBundle] pathForResource:@"pictureLicenses" ofType:@"plist"]; 

    NSArray *tmpDataSource = [NSArray arrayWithContentsOfFile:path]; 
    NSMutableArray *tmp = [[NSMutableArray alloc] init]; 
    self.dataSource = tmp; 
    [tmp release]; 

    for (NSDictionary *dict in tmpDataSource) { 
     pictureData *pic = [pictureData picDataWith:dict]; 
     NSLog(@"%@", pic.title); 
     [self.dataSource addObject:pic]; 
    } 

一切正常smashingly。我有一個表格視圖加載正確的圖片圖像和信息，沒有問題。運行儀器進行泄漏時，我發現我的pictureData對象在每次分配時都會泄漏。

我會假設與我的對象autoreleased我不會擔心手動分配和釋放他們。

也許是我的問題，我使用autorelease，其中autoReleasePool保留+1計數，然後當我添加一個pictureData對象到我的數組，這也保留了它？謝謝大家的時間！

編輯：別忘了叫超級！謝謝你，山姆！

Answer 1

變化的dealloc到：

-(void)dealloc { 
    [fileName release]; 
    [photographer release]; 
    [title release]; 
    [license release]; 
    [super dealloc]; 
} 

（調用[super dealloc]）

Answer 2

在你的函數，改變返回值，包括自動釋放，像

+ (pictureData*)picDataWith:(NSDictionary *)dictionary 
{ 
    ... 
    ... 
    return [tmp autorelease]; 
} 

當您添加pictureData對象dataSource，你增加了保留計數，所以你應該在返回時自動釋放它。

希望它有幫助。