ios - PFUser logInWithUsernameInBackground in Swift - Missing argument for parameter 'target' call -

i implementing login function parse written in swift. getting error:

missing argument parameter 'target' call

it doesn't seem i"m missing parameters though - i'm following declaration in pfuser.h.

here code:

//declarations @iboutlet weak var usernametextfield: uitextfield! @iboutlet weak var passwordtextfield: uitextfield!  @ibaction func loginbuttonpressed(sender: uibutton) {     let useremail = usernametextfield.text     let userpassword = passwordtextfield.text      //check both fields filled     if usernametextfield != "" && passwordtextfield != "" {         pfuser.loginwithusernameinbackground(useremail, password: userpassword) {             (user: pfuser, error: nserror) -> void in {     } } 

thank help!

you have curly braces , username , password checks wrong. try below code (copy & paste please) works:

@ibaction func loginbuttonpressed(sender: uibutton) {     let useremail = usernametextfield.text     let userpassword = passwordtextfield.text      if !useremail.isempty && !userpassword.isempty {         pfuser.loginwithusernameinbackground(useremail, password: userpassword) { (user, error) -> void in             if error == nil {                 println("succesful")             } else {                 println("error: \(error!.userinfo!)")             }         }     } }