Convert NSData (retrieved from wcf ) to NSArray - ios

Question

I want to convert NSData, which I get it by accessing web service, to NSArray. How can I do it?
Here is the structure that I want to convert from NSData:
NSArray:
NSDictionary1 : roomName departmentName
NSDictionary2 : roomName departmentName
NSDictionary3 : roomName departmentName
NSDictionary4 : roomName departmentName
NSDictionary5 : roomName departmentName
...
GetRoomList method of the web service returns a list. The structure of the list is above. Code:
- (void)viewDidLoad
{
[super viewDidLoad];
NSString *soapMessage = [NSString stringWithFormat:#"<SOAP-ENV:Envelope xmlns:SOAP-ENV=\"http://schemas.xmlsoap.org/soap/envelope/\"><SOAP-ENV:Body><m:GetRoomList xmlns:m=\"http://http://portNumber/ilacDirektif.svc/\"><departId xsi:type=\"xsd:int\">0</departId><roomId xsi:type=\"xsd:int\">0</roomId></m:GetRoomList></SOAP-ENV:Body></SOAP-ENV:Envelope>"];
NSURL *url=[NSURL URLWithString:#"http://port number/ilacDirektif.svc/"];
NSMutableURLRequest *theRequest= [NSMutableURLRequest requestWithURL:url cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:30];
NSString *msgLength = [NSString stringWithFormat:#"%d", [soapMessage length]];
[theRequest addValue: #"text/xml; charset=utf-8" forHTTPHeaderField:#"Content-Type"];
[theRequest addValue: #"http://tempuri.org/ilacDirektif.svc" forHTTPHeaderField:#"SOAPAction"];
[theRequest addValue: msgLength forHTTPHeaderField:#"Content-Length"];
[theRequest setHTTPMethod:#"POST"];
[theRequest addValue:#"port number" forHTTPHeaderField:#"Host"];
[theRequest setHTTPBody: [soapMessage dataUsingEncoding:NSUTF8StringEncoding]];
NSURLResponse* response = nil;
NSData *data =[NSURLConnection sendSynchronousRequest: theRequest returningResponse: &response error: nil];
NSArray *array = [NSKeyedUnarchiver unarchiveObjectWithFile:data];
if(array){NSLog(#"%#",array); }else{ NSLog(#"Failed"); }
if (data) {NSLog(#"%#",data);} else { NSLog(#"Failed");}
}
Error:
2013-05-31 09:59:45.208 IlacOrder[18513:11303] -[__NSCFData getFileSystemRepresentation:maxLength:]: unrecognized selector sent to
instance 0x7560860 2013-05-31 09:59:45.222 IlacOrder[18513:11303] *
Terminating app due to uncaught exception
'NSInvalidArgumentException', reason: '-[__NSCFData
getFileSystemRepresentation:maxLength:]: unrecognized selector sent to
instance 0x7560860'
* First throw call stack: (0x1c8e012 0x10cbe7e 0x1d194bd 0x1c7dbbc 0x1c7d94e 0xacc7b4 0xacc762 0xafac85 0xb22c7a 0x2a55 0xf4817 0xf4882
0xf4b2a 0x10bef5 0x10bfdb 0x10c286 0x10c381 0x10ceab 0x10d4a3 0x10d098
0x2460 0x10df705 0x16920 0x168b8 0xd7671 0xd7bcf 0xd6d38 0x4633f
0x46552 0x243aa 0x15cf8 0x1be9df9 0x1be9ad0 0x1c03bf5 0x1c03962
0x1c34bb6 0x1c33f44 0x1c33e1b 0x1be87e3 0x1be8668 0x1365c 0x1ded
0x1d15 0x1) libc++abi.dylib: terminate called throwing an exception
The function in .svc:
public List<DepartmentRoom>GetRoomList(int roomId,int departId()){
return manager.GetRoomList(roomId,departId);
}
GetRoomList:
public List<DepartmentRoom> GetRoomList(int departId,int roomId){
var cmd = OracleHelper.GetOracleCommand(_conn, StoredProcedure.Procedure1);
if (_conn.State == ConnectionState.Closed)
_conn.Open();
OracleCommandBuilder.DeriveParameters(cmd);
cmd.Parameters["P_DEPARTID"].Value = departId;
cmd.Parameters["P_ROOMID"].Value = roomId;
OracleDataReader dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);
object o = cmd.Parameters["P_REF"].Value;
var roomList = new List<DepartmentRoom>();
while (dr.Read())
{
var departmentRoom = new DepartmentRoom
{
DepartId = Convert.ToInt32(dr["DEPARTID"]),
DepartmentName = dr["DEPART"].ToString(),
RoomId = Convert.ToInt32(dr["ROOMID"]),
RoomName = dr["ROOM"].ToString()
};
roomList.Add(departmentRoom);
}
return roomList;
}

Answer 1

Perhaps it would be worth reading the documentation of the methods and classes you are trying to use. unarchiveObjectWithFile: takes a file path as its argument, not an NSData. Finding the method in the docs that takes an NSData as its input is left to you as an exercise.

Answer 2

This worked for me:
ASIHTTPRequest *request = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:REQIP]];
NSData *myPostData = [[NSString stringWithFormat:#"{\"departId\":%d,\"roomId\":%d}",departId,roomId] dataUsingEncoding:NSUTF8StringEncoding];
NSMutableData *myMutablePostData = [NSMutableData dataWithData:myPostData];
[request setPostBody:myMutablePostData];
[request setRequestMethod:#"GET"];
[request addRequestHeader:#"Content-Type" value:#"application/json"];
[request setDelegate:self];
[request startSynchronous];
NSMutableArray *list =[[NSMutableArray alloc]init];
id jsonObjects = [NSJSONSerialization JSONObjectWithData:[[request responseString]dataUsingEncoding:NSUTF8StringEncoding]options:NSJSONReadingMutableContainers error:nil ];
for(NSDictionary *theItem in [jsonObjects objectForKey:#"RequestMethodResult"]){
[list addObject:[[ClassModel alloc]initWithDictionary:theItem]];
}
return list;
ClassModel is the structure of the Dictionary that each object item of NSMutableArray is.