NSKeyedArchiver和NSKeyedUnarchiver

//        NSDictionary * dict=[[NSDictionary alloc]initWithObjectsAndKeys:@"one",@"1",@"two",@"2",@"three" ,@"3",nil];
//        //只能在特定的路径下写文件
//        [dict writeToFile:PATH atomically:YES];
//归档
        NSArray * array=[[NSArray alloc]initWithObjects:@"one",@"two",@"three", nil];
        NSDictionary * dict=[[NSDictionary alloc]initWithObjectsAndKeys:@"one",@"1",@"two",@"2",@"three" ,@"3", nil];
        NSMutableData * data=[[NSMutableData alloc]init];
        NSKeyedArchiver * archiver=[[NSKeyedArchiver alloc]initForWritingWithMutableData:data];
        
        [archiver encodeObject:array forKey:@"array"];
        [archiver encodeObject:dict forKey:@"dict"];
        [archiver finishEncoding];
        
        [data writeToFile:PATH atomically:YES];
        
  //解档
        NSData * data1=[[NSData alloc]initWithContentsOfFile:PATH];
        NSKeyedUnarchiver * unarchiver=[[NSKeyedUnarchiver alloc]initForReadingWithData:data1];
        NSArray * array1=[unarchiver decodeObjectForKey:@"array"];
        NSLog(@"%@",array1);