Objective-c - initWithCoder 和内存管理？

Question

我在 initWithCoder 方法中遇到泄漏。

unarchiveObjectWithData:cacheData 是否返回一个自动释放的对象？谁负责释放从 unarchiveObjectWithData:cacheData 返回的对象？

@implementation MyObject
@synthesize something = _something;

- (id)initWithCoder:(NSCoder *)aDecoder
{
    if (self = [super init])
    {
         self.something = [aDecoder decodeObjectForKey:@"something"];
    }
}

- (void)dealloc
{
        self.something = nil;
        [super dealloc];
}

@end

这是我从文件读取对象的地方

MyObject *myObject = [NSKeyedUnarchiver unarchiveObjectWithData:cacheData];

Answer 1

Does unarchiveObjectWithData:cacheData return me an autoreleased object? whose responsible to release the object return from unarchiveObjectWithData:cacheData?

只要记住NARC即可。如果您调用的方法以 new、alloc、retain 或 copy 开头，那么您拥有任何对象被返回并必须释放它。如果没有，则会自动释放。