Kotlin Programming By Example

Creating the signup interactor

Now we will implement a signup interactor to act as a model that our yet-to-be-implemented signup presenter will communicate with. Create a SignUpInteractor interface within the signup package, as follows:

package com.example.messenger.ui.signupimport com.example.messenger.ui.auth.AuthInteractorinterface SignUpInteractor : AuthInteractor {  interface OnSignUpFinishedListener {    fun onSuccess()    fun onUsernameError()    fun onPasswordError()    fun onPhoneNumberError()    fun onError()  }  fun signUp(username: String, phoneNumber: String, password: String,              listener: OnSignUpFinishedListener)  fun getAuthorization(listener: AuthInteractor.onAuthFinishedListener)}

You may have noticed that SignUpInteractor extends AuthInteractor ...