目标C泄漏自动释放对象的内存

Question

好的,所以我知道在这个问题上有一堆问题,但在阅读它们并尝试使用这些方法之后,我的应用程序似乎仍然会泄漏内存.我研究上的内存Manegment苹果直营店和读取显着的问题在这里,这里和这里.我有一个方法解析一个JSON字符串,然后将它们返回到一个NSMutableDictionary.我autorelease从返回方法调用该对象,然后调用retain接收方法(确保该对象在池的下一个排水管上不是dealloc).然后,当我完成它时,我释放对象.但它仍然泄漏.谁能看到我做错了什么？

退货方法

+ (NSMutableArray *)parseSpecialtyResult:(NSString *)json
{
    SBJsonParser *parser = [[SBJsonParser alloc] init];

    NSDictionary *dictionary = [parser objectWithString:json];

    NSArray *jsonObjects = [dictionary valueForKey:@"Rows"];

    NSMutableArray *jsonArray = [[NSMutableArray alloc] initWithCapacity:[jsonObjects count]];

    //Storing objects
    for (NSDictionary *dict in jsonObjects) 
    {
        Specialty *specialty = [[Specialty alloc] init];
        [specialty setName:[dict objectForKey:@"name"]];
        [specialty setIdenity:[dict objectForKey:@"id"]];

        [jsonArray addObject:specialty];
    }

    [parser release];

    //Relinquish ownership of this object
    return [jsonArray autorelease];
}

打电话给班级

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    [connection release];

    NSString *responseString = [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding];
    [responseData release];

    //This class will take the responsibility of the object's ownership
    self.jsonArray = [[SpecialtyUrl parseSpecialtyResult:responseString] retain];

    [tableView reloadData];

    [responseString release];
}

- (void)dealloc
{
    [super dealloc];
    //No longer need the object
    [jsonArray release];
    NSLog(@"Ref count %i", [jsonArray retainCount]);
}

日志

Ref count 1

Answer 1

您不会Speciality在for语句中释放对象:

for (NSDictionary *dict in jsonObjects) 
{
    Specialty *specialty = [[Specialty alloc] init];
    ...
    [jsonArray addObject:specialty];
    [specialty release];
}

此外,如果jsonArray是保留或复制属性,则会过度保留对象:

self.jsonArray = [[SpecialtyUrl parseSpecialtyResult:responseString] retain];

应该简单(再次,如果保留或复制):

self.jsonArray = [SpecialtyUrl parseSpecialtyResult:responseString];

此外,[super dealloc];应该是最后一个声明dealloc.