Can't save txt(xml) file on ios devices

Code (CSharp):

1. // iOS
2.             path = Application.dataPath + "/Raw/plants.txt";
3. XmlDocument doc = new XmlDocument();
4.         doc.LoadXml(textAsset.text);
5.    
6.         XmlNode plant = doc.CreateElement("plant");
7.         XmlNode xnhabitID = doc.CreateElement("habitID");
8.         XmlNode xnplantID = doc.CreateElement("plantID");
9.         XmlNode xnlevelplant = doc.CreateElement("levelplant");
10.         XmlNode xnlevelroot = doc.CreateElement("levelroot");
11.         XmlNode xnslot = doc.CreateElement("slot");
12.         XmlNode xntime = doc.CreateElement("time");
13.         XmlNode xnall = doc.CreateElement("clall");
14.         XmlNode xnmid = doc.CreateElement("clmid");
15.         XmlNode xnin = doc.CreateElement("clin");
16.         XmlNode xnst = doc.CreateElement("status");
17.         XmlAttribute xnid = doc.CreateAttribute("id");
18.  
19.         xnhabitID.InnerText = habitID.ToString();
20.         xnplantID.InnerText = plantID.ToString();
21.         xnlevelplant.InnerText = levelplant.ToString();
22.         xnlevelroot.InnerText = levelroot.ToString();
23.         xnslot.InnerText = slot.ToString();
24.         xntime.InnerText = time;
25.         xnall.InnerText = clall.ToString();
26.         xnmid.InnerText = clmid.ToString();
27.         xnin.InnerText = clin.ToString();
28.         xnst.InnerText = status.ToString();
29.         xnid.Value = getLastID(getNodeList())+"";
30.  
31.         plant.Attributes.SetNamedItem(xnid);
32.         plant.AppendChild(xnhabitID);
33.         plant.AppendChild(xnplantID);
34.         plant.AppendChild(xnlevelplant);
35.         plant.AppendChild(xnlevelroot);
36.         plant.AppendChild(xnslot);
37.         plant.AppendChild(xntime);
38.         plant.AppendChild(xnall);
39.         plant.AppendChild(xnmid);
40.         plant.AppendChild(xnin);
41.         plant.AppendChild(xnst);
42.  
43.  
44.         doc.DocumentElement.AppendChild(plant);
45.         doc.Save    (path);

Error on Xcode :

Code (CSharp):

1. UnauthorizedAccessException: Access to the path "/var/mobile/Applications/D0C106E4-7B39-4F18-BFA1-37F79DA22DCB/1504271.app/Data/Raw/plants.txt" is denied.
2.   at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize, Boolean anonymous, FileOptions options) [0x00000] in <filename unknown>:0
3.   at System.IO.FileStream..ctor (System.String path, FileMode mode, FileAccess access, FileShare share) [0x00000] in <filename unknown>:0
4.   at System.Xml.XmlTextWriter..ctor (System.String filename, System.Text.Encoding encoding) [0x00000] in <filename unknown>:0
5.   at System.Xml.XmlDocument.Save (System.String filename) [0x00000] in <filename unknown>:0
6.   at XMLConfig.addNewPlant (Int32 habitID, Int32 plantID, Int32 levelplant, Int32 levelroot, Int32 slot, System.String time, Int32 clall, Int32 clmid, Int32 clin, Int32 status) [0x00000] in <filename unknown>:0
7.   at ActionUI.SaveData () [0x00000] in <filename unknown>:0
8.   at UnityEngine.Events.InvokableCall.Invoke (System.Object[] args) [0x00000] in <filename unknown>:0
9.   at UnityEngine.Events.InvokableCallList.Invoke (System.Object[] parameters) [0x00000] in <filename unknown>:0
10.   at UnityEngine.Events.UnityEventBase.Invoke (System.Object[] parameters) [0x00000] in <filename unknown>:0
11.   at UnityEngine.Events.UnityEvent.Invoke () [0x00000] in <filename unknown>:0
12.   at UnityEngine.UI.Button.Press () [0x00000] in <filename unknown>:0
13.   at UnityEngine.UI.Button.OnPointerClick (UnityEngine.EventSystems.PointerEventData eventData) [0x00000] in <filename unknown>:0
14.   at UnityEngine.EventSystems.ExecuteEvents.Execute (IPointerClickHandler handler, UnityEngine.EventSystems.BaseEventData eventData) [0x00000] in <filename unknown>:0
15.   at UnityEngine.EventSystems.ExecuteEvents.Execute (UnityEngine.GameObject target, UnityEngine.EventSystems.BaseEventData eventData, UnityEngine.EventSystems.EventFunction`1 functor) [0x00000] in <filename unknown>:0

This method can working on unity editor but not working ios devices ,please help me !

 

http://wiki.unity3d.com/index.php/Save_and_Load_from_XML

 

I tried but not working on ios devices , this working on Unity Edittor

 

You should use Application.persistentDataPath

 

I tried , but not working , my file saved to "/Documents" but I can't write and use method XMLDocument.Save();

Code (CSharp):

1.  
2. UnauthorizedAccessException: Access to the path "/var/mobile/Applications/7F251F60-9CC5-4E18-8755-B05CB064DB82/Documents/plants.txt" is denied.

 

Please try this, This code is working fine in iOS and Android both...

Code (CSharp):

1.         void Start()
2.         {
3.         string xmlFile = Application.persistentDataPath + "/fileName.txt"
4.         FileStream fileStream = new FileStream(xmlFile, FileMode.Create);
5.         StreamWriter streamWriter = new StreamWriter(fileStream);
6.         streamWriter.Write("This is a text file");
7.         streamWriter.Flush();
8.         streamWriter.Close();
9.         }