iOS 归档解档

Posted 2020-07-31 tongyuling

归档：

    NSMutableData *data = [[NSMutableData alloc] init];

    //创建归档辅助类

    NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc] initForWritingWithMutableData:data];

    //编码

    [archiver encodeObject:@"2009-12-09" forKey:@"dataTime"];

   //结束编码

    [archiver finishEncoding];

    //写入

    [data writeToFile:[self getFilePathWithModelKey:[NSString stringWithFormat:@"test"]] atomically:YES];

 

 

方法：//得到Document目录

-(NSString *) getFilePathWithModelKey:(NSString *)modelkey

{

    NSArray *array =  NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    return [[array objectAtIndex:0] stringByAppendingPathComponent:modelkey];

}

 

 

解档：

        NSData * data = [[NSData alloc] initWithContentsOfFile:[self getFilePathWithModelKey:[NSString stringWithFormat:@"test"]]];

        //解档辅助类

        NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];

        NSString * time = [unarchiver decodeObjectForKey:@"dataTime"];

        //关闭解档

        [unarchiver finishDecoding];