Objective-C封装字符串存储操作示例

        NSDictionary *dic = (NSDictionary *)[storeStr JSONValue];

        NSLog(@"%@", dic);

        return (NSArray *)[dic objectForKey:fileName];
    }
    else
    {
        NSArray *objectsArry = [[NSArray alloc]initWithObjects:writeArry,nil ];
        NSArray *keysArry    = [[NSArray alloc]initWithObjects:fileName,nil ];
        NSDictionary *dic = [[NSDictionary alloc]initWithObjects:objectsArry forKeys:keysArry];
        NSString *storeStr = [dic JSONRepresentation];
        [self storeFile:fileName content:storeStr];
        [objectsArry release];
        [keysArry release];
        [dic release];
    }
    return nil;
}