ios - Couldn't create log directory -

when test application on ipad run i.e. call database , create folder , perform other task in console show me

2015-05-12 11:25:32.478 myapp[291:19680] [pllogging] couldn't create log directory: operation couldn’t completed. (cocoa error 513.).

when search, found answer nsfilemanager creating folder (cocoa error 513.)

but not abel remove this.
when shutdown , restart ipad line not show

question:

1. why statement in console?
2. the above statement can crash app in future?
3. how remove cocoa error 513 ?

here code calling database

let filemanager = nsfilemanager() var sourcepath = nsbundle.mainbundle().resourcepath?.stringbyappendingpathcomponent("database.db"); let docspath = nssearchpathfordirectoriesindomains(nssearchpathdirectory.documentdirectory, nssearchpathdomainmask.userdomainmask, true)[0] as! string let databasestr = "database.db" let dbpath = docspath.stringbyappendingpathcomponent(databasestr) println(dbpath)     if(filemanager .fileexistsatpath(dbpath) == false) {      var error:nserror?     filemanager.copyitematpath(sourcepath!, topath: dbpath, error: &error)     println(error) } 

and here functions create logs folder

func createlog(log:string) {     autoreleasepool{          var formatter:nsdateformatter! = nsdateformatter()         formatter.dateformat = "yyyy-mm-dd";         var datestring = formatter.stringfromdate(nsdate()).stringbyappendingstring("_templogs")         formatter.dateformat = "yyyy-mm-dd hh:mm:ss";         var filemanager:nsfilemanager! = nsfilemanager.defaultmanager()          var logfolder = nsbundle.mainbundle().resourcepath?.stringbyappendingpathcomponent("logs")         let searchpath = nssearchpathfordirectoriesindomains(nssearchpathdirectory.documentdirectory, nssearchpathdomainmask.userdomainmask, true)[0] as! string         let logstr = "logs"         let logfolderpath = searchpath.stringbyappendingpathcomponent(logstr)          if(filemanager.fileexistsatpath(logfolderpath) == false)         {             var error:nserror?             filemanager.createdirectoryatpath(logfolderpath, withintermediatedirectories: true, attributes: nil, error: &error)          }         var logpath = logfolderpath.stringbyappendingpathcomponent(datestring).stringbyappendingpathextension("txt")         var writestring = (formatter.stringfromdate(nsdate()).stringbyappendingstring(" ").stringbyappendingstring(log).stringbyappendingstring("\n"));         var data = writestring.datausingencoding(nsutf8stringencoding)         if(!filemanager.fileexistsatpath(logpath!))         {             filemanager.createfileatpath(logpath!, contents: data, attributes: nil)         }         else         {             var output = nsfilehandle(forwritingatpath: logpath!);             output?.seektoendoffile();             output?.writedata(data!);             output?.closefile()             output = nil         }         formatter = nil         filemanager = nil      }  } 

the 513 permission issue (nsfilewritenopermissionerror).

try println logfolderpath , double check if correct (or post here result).

d.