功能正在运行，但现在说它不是功能

Question

I have a service that returns an array of states. It was working (thanks Sajeetharan), but now I'm getting a page error saying that it's not a function.

  constructor(
    public navCtrl: NavController, 
    public navParams: NavParams, 
    private contactService: ContactsProvider,
    private stateService: StatesProvider,
    private auth: AuthenticationProvider) {

    this.contactId = this.navParams.get('contactId');

  }

  ngOnInit(){
    this.contactService.getContactById(this.contactId)
      .subscribe(res => {
        this.contact = res.json();
        this.contactInitials = this.contact.first_name.charAt(0) + this.contact.last_name.charAt(0);
      })

    this.states = this.stateService.getStates();

  }

The specific error is

: Error: Uncaught (in promise): TypeError: this.stateService.getStates is not a function

.

What could cause this?

Answer 1

I guess this quesiton is a continuation of your previous question

in order to access your service method you need to set the access specifier as public .

public getStates(){

}