Btukfyl

Hi I'm new to Android Studio and I can't find anything thing online to fix this issue of unresolved reference. I follow a tutorial online to create a Google Sign in through firebase on my App using Kotlin. I Feel like this is an easy fix but I haven't found anything in which to fix this error.

The project can still run the app but it doesn't work properly with my indented UI.

Code screenshot and snip of it below.

import android.content.Intent

import android.content.res.Configuration

import android.support.v7.app.AppCompatActivity

import android.os.Bundle

import android.support.v7.app.AlertDialog

import android.util.Log

import android.widget.Toast

import com.google.android.gms.auth.api.Auth

import com.google.android.gms.auth.api.signin.GoogleSignInAccount

import com.google.android.gms.common.api.GoogleApiClient

import com.google.firebase.auth.FirebaseAuth

import com.google.android.gms.auth.api.signin.GoogleSignInOptions

import com.google.android.gms.auth.api.signin.GoogleSignInResult

import com.google.android.gms.common.ConnectionResult

import com.google.firebase.auth.AuthCredential

import com.google.firebase.auth.GoogleAuthCredential

import com.google.firebase.auth.GoogleAuthProvider

import kotlinx.android.synthetic.main.activity_main.*





class MainActivity : AppCompatActivity(), GoogleApiClient.OnConnectionFailedListener {

override fun onConnectionFailed(p0: ConnectionResult) {

    Toast.makeText(this,""+p0.errorMessage,Toast.LENGTH_SHORT).show() //To change body of created functions use File | Settings | File Templates.

}





companion object {

    private val PERMISSION_CODE =9999

}



lateinit var mGoogleApiClient:GoogleApiClient

lateinit var firebaseAuth:FirebaseAuth

//lateinit var alertDialog:AlertDialog



override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {

    super.onActivityResult(requestCode, resultCode, data)

    if(requestCode == PERMISSION_CODE) {

        val result:GoogleSignInResult = Auth.GOOGLE_SIGN_IN_API.getSignInResultFromIntent(data) //Error here---  

        if(result.isSuccess) {

            val account:GoogleSignInAccount? = result.signInAccount

            val idToken:String? = account!!.idToken



            val credential = GoogleAuthProvider.getCredential(idToken,null)

            firebaseAuthWithGoogle(credential)

        }

        else{

            Log.d("EDMT_ERROR","Login Unsuccessful")

            Toast.makeText(this,"Login Unsuccessful",Toast.LENGTH_SHORT).show()

        }

    }

}



private fun firebaseAuthWithGoogle(credential: AuthCredential) { // changed from AuthCredential?

    firebaseAuth!!.signInWithCredential(credential)

        .addOnSuccessListener { authResult ->

            val logged_email = authResult.user.email

            val logged_activity = Intent(this@MainActivity,LoggedActivity::class.java)

            logged_activity.putExtra("email",logged_email)

            startActivity(logged_activity)

        }

        .addOnFailureListener{

            e-> Toast.makeText(this,""+e.message,Toast.LENGTH_SHORT).show()

        }

}





override fun onCreate(savedInstanceState: Bundle?) {

    super.onCreate(savedInstanceState)

    setContentView(R.layout.activity_main)



    configureGoogleClient()



    firebaseAuth = FirebaseAuth.getInstance()



    /*alertDialog = SpotsDialog.Builder(0) //Github thing that i may have to fix

        .setContext(this)

        .setMessage("Please wait")

        .setCancelable(false)

        .build()   */



    btn_sign_in.setOnClickListener {

        signIn()

    }

}



private fun signIn() {

    val Intent = Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient) //maybe add Intent:Intent!

    startActivityForResult(intent, PERMISSION_CODE)

}



private fun configureGoogleClient() {

    val options = GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN) // maybe change to options:GoogleSignInOptions! =

        .requestIdToken(getString(R.string.default_web_client_id))

        .requestEmail()

        .build()

    mGoogleApiClient = GoogleApiClient.Builder(this)

        .enableAutoManage(this,this)

        .addApi(Auth.GOOGLE_SIGN_IN_API,options)

        .build()

    mGoogleApiClient.connect()  // don't forget it

}

}

`

Problem here

Link to screenshot of Code

You should just need to replace GOOGLE_SIGN_IN_API with GoogleSignInApi on the line with the error. Make sure you read the API docs, like these: https://developers.google.com/android/reference/com/google/android/gms/auth/api/signin/GoogleSignInApi