Unity3d Local Data storage

usingUnityengine;usingSystem.Collections;
Path Tool class Public classpathkit{/** Suffix constant character*/     Public Const stringSUFFIX =". txt"; Const stringprefix="file://"; Const stringformat=". Unity3d";  Public Static stringresroot=application.persistentdatapath+"/";  Public Static stringGetstreamingassetspath (stringp_filename) {        string_strpath =""; if(Application.platform = = Runtimeplatform.windowseditor | | Application.platform = =runtimeplatform.windowsplayer) _strpath="file://"+ Application.streamingassetspath +"/"+ P_filename +". Unity3d"; Else if(Application.platform = =runtimeplatform.android) _strpath= Application.streamingassetspath +"/"+ P_filename +". Unity3d"; Else if(Application.platform = = Runtimeplatform.osxeditor | | Application.platform = =runtimeplatform.iphoneplayer) _strpath="file://"+ Application.streamingassetspath +"/"+ P_filename +". Unity3d"; return_strpath; }                 Public Static stringGetosdatapath (stringp_filename) {        stringpath; Path=""; if(Application.platform = =runtimeplatform.osxeditor) path= Application.persistentdatapath +P_filename; if(Application.platform = =runtimeplatform.iphoneplayer) path= Resroot +P_filename; if(Application.platform = = Runtimeplatform.windowsplayer | | Application.platform = =runtimeplatform.windowseditor) path= Application.datapath +"/cache/"+P_filename; if(Application.platform = =runtimeplatform.android) path=resroot +P_filename; //debug.logwarning ("===========path:" +path);        returnpath; }             Public Static stringGeturlpath (stringP_filename,BOOLNeedprefix,BOOLNeedformat) {        stringpath; Path=""; if(Application.platform = =runtimeplatform.osxeditor) path= application.persistentdatapath+"/"+P_filename; if(Application.platform = =runtimeplatform.iphoneplayer) path= Resroot +P_filename; if(Application.platform = =runtimeplatform.windowseditor) path= Application.datapath +"/cache/"+P_filename; if(Application.platform = =runtimeplatform.windowsplayer) path= Application.datapath +"/cache/"+P_filename; if(Application.platform = =runtimeplatform.android) path= Resroot +P_filename; if(Needprefix) path=prefix+path; if(Needformat) path=path+FORMAT; //debug.logwarning ("===========path:" +path);        returnpath; }         Public Static stringGetFileName (stringpath) {            string[] _list= path. Split (New Char[]{'/'}); if(_list. Length>0)return_list[_list. length-1]; Else            return ""; }         Public Static stringGetfiledir (stringpath) {Path= path. Replace ("\\","/"); Path= path. Substring (0, Path. LastIndexOf ("/")); returnpath; }         Public Static voidCreatedirifnotexists (stringpath) {        stringDIR =getfiledir (path); if(!System.IO.Directory.Exists (dir))        {System.IO.Directory.CreateDirectory (dir); }    }    }

 private  void   Savefriendtolocal () { string  cachestr =  ""  ;//content  string  Path = Pathkit.resroot + string   = new   FileStream (path,        FileMode.OpenOrCreate, FileAccess.Write);        StreamWriter SW  = new   StreamWriter (FS); Sw.        Flush (); Sw.        Basestream.seek ( 0  , Seekorigin.begin); Sw.        Write (CACHESTR); Sw.     Close (); }

 Private voidloadfriendfromlocal () {Try        {            stringPath = Pathkit.resroot +string.            Format (Chat_cache_dir,userid); if(! File.exists (PATH))return; FileStream FS=NewFileStream (Path, FileMode.OpenOrCreate, FileAccess.Read); byte[] bytes =New byte[FS.            Length]; Fs. Read (Bytes,0, (int) fs.            Length); Fs.            Close (); Mcachefriend=Newlist<string> ();string[] arr = Encoding.UTF8.GetString (bytes). Split ('\ n');  for(inti =0; I < arr. Length; i++) {                string[] item = Arr[i]. Split ('\ t'); Mcachefriend.add (item[0]);            }           }        Catch(System.Exception e) {Debug.Log (e.message); }    }

Unity3d Local Data storage