ios - Append some text at the end of text file in swift -

this question has answer here:

• append text or data text file in swift 3 answers

i using following code getting errors.

"can not convert value of type nsurl int32"

at line:

if let filehandle = nsfilehandle(filedescriptor: fileurl, closeondealloc: &err). 

and getting error

"type of expression ambiguous without more context" @ line

if !data.writetourl(fileurl, options: .datawritingatomic, error: &err) 

code:

let dir:nsurl = nsfilemanager.defaultmanager().urlsfordirectory(nssearchpathdirectory.cachesdirectory, indomains: nssearchpathdomainmask.userdomainmask).last nsurl let fileurl =  dir.urlbyappendingpathcomponent("log.txt")  let string = "\(nsdate())\n" let data = string.datausingencoding(nsutf8stringencoding, allowlossyconversion: false)!  if nsfilemanager.defaultmanager().fileexistsatpath(fileurl.path!) {     var err:nserror?     if let filehandle = nsfilehandle(filedescriptor: fileurl, closeondealloc: &err) {         filehandle.seektoendoffile()         filehandle.writedata(data)         filehandle.closefile()     }     else {         print("can't open filehandle \(err)")     } } else {     var err:nserror?     if !data.writetourl(fileurl, options: .datawritingatomic, error: &err) {         print("can't write \(err)")     } } 

your code looks swift 1 me , then, it's not valid swift 1 either. if using swift 2 or later, try this:

let dir = nsfilemanager.defaultmanager().urlsfordirectory(nssearchpathdirectory.cachesdirectory, indomains: nssearchpathdomainmask.userdomainmask).last! let fileurl = dir.urlbyappendingpathcomponent("log.txt")  let string = "\(nsdate())\n" let data = string.datausingencoding(nsutf8stringencoding, allowlossyconversion: false)!  if nsfilemanager.defaultmanager().fileexistsatpath(fileurl.path!) {     {         let filehandle = try nsfilehandle(forwritingtourl: fileurl)          filehandle.seektoendoffile()         filehandle.writedata(data)         filehandle.closefile()     } catch {         print("can't open filehandle \(error)")     } } else {     {         try data.writetourl(fileurl, options: .datawritingatomic)     } catch {         print("can't write \(error)")     } }