iOS NSCoding NSMutableArray

Question

我有.h和.m来实现NSCoding，但是mutableArray对象计数总是0.

.h

#import <Foundation/Foundation.h>

@interface Favorite : NSObject <NSCoding> {
    NSMutableArray *myArray;
}
@property (nonatomic, retain) NSMutableArray *myArray;
@end

.m

#import "Favorite.h"

@implementation Favorite
- (void)dealloc {
    [myArray release];
}

- (void)encodeWithCoder:(NSCoder *)encoder {
    [encoder encodeObject:myArray];
}

- (id)initWithCoder:(NSCoder *)decoder {
    myArray = [[decoder decodeObject] retain];
    return self;
}
@end

我会用这门课

Favorite *fav = [[Favorite alloc] init];
fav.myArray = self.anotherArray;
[fav release];

是对的吗？

Answer 1

你需要像这样分配NSMutableArray，

myArray=[[NSMutableArray alloc]init];

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