Google sign-in fragment returning RESULT_CANCELED

Question

I am trying to integrate Google sign-in into my android app using Firebase, but I am running into issues. I am following the tutorial here , and I believe that I have followed it to the word. I added Firebase to my app, added my SHA-1 fingerprint, enabled Google sign-in, and added the dependencies to my grade files. Then, I copied the code in the github project linked to in the tutorial. However, when I run the application, and my code is below, I get an error when the sign-in fragment returns, and the result code is RESULT_CANCELED . This is the error output:

W/GoogleSignInActivity: Google sign in failed, resultCode: 0
                    com.google.android.gms.common.api.ApiException: 10: 
                        at com.google.android.gms.common.internal.zzb.zzy(Unknown Source:14)
                        at com.google.android.gms.auth.api.signin.GoogleSignIn.getSignedInAccountFromIntent(Unknown Source:37)
                        at com.example.root.firebasesignin.LoginActivity.onActivityResult(LoginActivity.java:63)
                        at android.app.Activity.dispatchActivityResult(Activity.java:7267)
                        at android.app.ActivityThread.deliverResults(ActivityThread.java:4524)
                        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4571)
                        at android.app.ActivityThread.-wrap19(Unknown Source:0)
                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1744)
                        at android.os.Handler.dispatchMessage(Handler.java:105)
                        at android.os.Looper.loop(Looper.java:164)
                        at android.app.ActivityThread.main(ActivityThread.java:6809)
                        at java.lang.reflect.Method.invoke(Native Method)
                        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

When I created the SHA-1 fingerprint, I did have to remake the debug keystore at ~/.android/debug.keystore using the command

keytool -genkey -v -keystore ~/.android/debug.keystore -storepass android -alias androiddebugkey -keypass android -dname "CN=Android Debug,O=Android,C=US"

and then I converted the keystore to pkcs12 using the command

keytool -importkeystore -srckeystore ~/.android/debug.keystore -destkeystore ~/.android/debug.keystore -deststoretype pkcs12

I have never used Firebase or Google sign-in for authentication, so I am very lost. I think the keystore might be the problem, and when I look in File > Project Structure > Signings nothing is shown in the left panel, and in File > Project Structure > Build Types the Signing Config box is empty. Again, I am very new to Firebase and Google authentication, so please excuse me if I'm forgetting something simple. Thank you in advance for your help.

This is the code for my main activity. The layout is simply a Google sign-in button and the action bar.

package com.example.root.firebasesignin;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GoogleAuthProvider;

public class LoginActivity extends AppCompatActivity implements View.OnClickListener {
    private static final String TAG = "GoogleSignInActivity";
    private static final int RC_SIGN_IN = 9001;

    private FirebaseAuth mAuth;
    private GoogleSignInClient mGoogleSignInClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        // Button listeners
        findViewById(R.id.sign_in_button).setOnClickListener(this);

        // Configure Google Sign In
        GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(getString(R.string.default_web_client_id))
                .requestEmail()
                .build();

        mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
        mAuth = FirebaseAuth.getInstance();
    }

    @Override
    public void onStart() {
        super.onStart();
        // Check if user is signed in (non-null) and update UI accordingly.
        FirebaseUser currentUser = mAuth.getCurrentUser();
        updateUI(currentUser);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == RC_SIGN_IN) {
            Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
            try {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = task.getResult(ApiException.class);
                firebaseAuthWithGoogle(account);
            } catch (ApiException e) {
                // Google Sign In failed, update UI appropriately
                Log.w(TAG, "Google sign in failed, resultCode: " + resultCode, e);
                updateUI(null);
            }
        }
    }

    private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
        Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());

        AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information
                            Log.d(TAG, "signInWithCredential:success");
                            FirebaseUser user = mAuth.getCurrentUser();
                            updateUI(user);
                        } else {
                            // If sign in fails, display a message to the user.
                            Log.w(TAG, "signInWithCredential:failure", task.getException());
                            Toast.makeText(LoginActivity.this, "Authentiation failed", Toast.LENGTH_LONG).show();
                            updateUI(null);
                        }
                    }
                });
    }

    private void signIn() {
        Intent signInIntent = mGoogleSignInClient.getSignInIntent();
        startActivityForResult(signInIntent, RC_SIGN_IN);
    }

    private void updateUI(FirebaseUser user) {
        if (user != null)
            findViewById(R.id.sign_in_button).setVisibility(View.GONE);
        else
            findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE);
    }

    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.sign_in_button)
            signIn();
    }
}

Answer 1

I am trying to integrate Google sign-in into my android app using Firebase, but I am running into issues. I am following the tutorial here , and I believe that I have followed it to the word. I added Firebase to my app, added my SHA-1 fingerprint, enabled Google sign-in, and added the dependencies to my grade files. Then, I copied the code in the github project linked to in the tutorial. However, when I run the application, and my code is below, I get an error when the sign-in fragment returns, and the result code is RESULT_CANCELED . This is the error output:

W/GoogleSignInActivity: Google sign in failed, resultCode: 0
                    com.google.android.gms.common.api.ApiException: 10: 
                        at com.google.android.gms.common.internal.zzb.zzy(Unknown Source:14)
                        at com.google.android.gms.auth.api.signin.GoogleSignIn.getSignedInAccountFromIntent(Unknown Source:37)
                        at com.example.root.firebasesignin.LoginActivity.onActivityResult(LoginActivity.java:63)
                        at android.app.Activity.dispatchActivityResult(Activity.java:7267)
                        at android.app.ActivityThread.deliverResults(ActivityThread.java:4524)
                        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4571)
                        at android.app.ActivityThread.-wrap19(Unknown Source:0)
                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1744)
                        at android.os.Handler.dispatchMessage(Handler.java:105)
                        at android.os.Looper.loop(Looper.java:164)
                        at android.app.ActivityThread.main(ActivityThread.java:6809)
                        at java.lang.reflect.Method.invoke(Native Method)
                        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

When I created the SHA-1 fingerprint, I did have to remake the debug keystore at ~/.android/debug.keystore using the command

keytool -genkey -v -keystore ~/.android/debug.keystore -storepass android -alias androiddebugkey -keypass android -dname "CN=Android Debug,O=Android,C=US"

and then I converted the keystore to pkcs12 using the command

keytool -importkeystore -srckeystore ~/.android/debug.keystore -destkeystore ~/.android/debug.keystore -deststoretype pkcs12

I have never used Firebase or Google sign-in for authentication, so I am very lost. I think the keystore might be the problem, and when I look in File > Project Structure > Signings nothing is shown in the left panel, and in File > Project Structure > Build Types the Signing Config box is empty. Again, I am very new to Firebase and Google authentication, so please excuse me if I'm forgetting something simple. Thank you in advance for your help.

This is the code for my main activity. The layout is simply a Google sign-in button and the action bar.

package com.example.root.firebasesignin;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GoogleAuthProvider;

public class LoginActivity extends AppCompatActivity implements View.OnClickListener {
    private static final String TAG = "GoogleSignInActivity";
    private static final int RC_SIGN_IN = 9001;

    private FirebaseAuth mAuth;
    private GoogleSignInClient mGoogleSignInClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        // Button listeners
        findViewById(R.id.sign_in_button).setOnClickListener(this);

        // Configure Google Sign In
        GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(getString(R.string.default_web_client_id))
                .requestEmail()
                .build();

        mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
        mAuth = FirebaseAuth.getInstance();
    }

    @Override
    public void onStart() {
        super.onStart();
        // Check if user is signed in (non-null) and update UI accordingly.
        FirebaseUser currentUser = mAuth.getCurrentUser();
        updateUI(currentUser);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == RC_SIGN_IN) {
            Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
            try {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = task.getResult(ApiException.class);
                firebaseAuthWithGoogle(account);
            } catch (ApiException e) {
                // Google Sign In failed, update UI appropriately
                Log.w(TAG, "Google sign in failed, resultCode: " + resultCode, e);
                updateUI(null);
            }
        }
    }

    private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
        Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());

        AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information
                            Log.d(TAG, "signInWithCredential:success");
                            FirebaseUser user = mAuth.getCurrentUser();
                            updateUI(user);
                        } else {
                            // If sign in fails, display a message to the user.
                            Log.w(TAG, "signInWithCredential:failure", task.getException());
                            Toast.makeText(LoginActivity.this, "Authentiation failed", Toast.LENGTH_LONG).show();
                            updateUI(null);
                        }
                    }
                });
    }

    private void signIn() {
        Intent signInIntent = mGoogleSignInClient.getSignInIntent();
        startActivityForResult(signInIntent, RC_SIGN_IN);
    }

    private void updateUI(FirebaseUser user) {
        if (user != null)
            findViewById(R.id.sign_in_button).setVisibility(View.GONE);
        else
            findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE);
    }

    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.sign_in_button)
            signIn();
    }
}

Answer 2

I am trying to integrate Google sign-in into my android app using Firebase, but I am running into issues. I am following the tutorial here , and I believe that I have followed it to the word. I added Firebase to my app, added my SHA-1 fingerprint, enabled Google sign-in, and added the dependencies to my grade files. Then, I copied the code in the github project linked to in the tutorial. However, when I run the application, and my code is below, I get an error when the sign-in fragment returns, and the result code is RESULT_CANCELED . This is the error output:

W/GoogleSignInActivity: Google sign in failed, resultCode: 0
                    com.google.android.gms.common.api.ApiException: 10: 
                        at com.google.android.gms.common.internal.zzb.zzy(Unknown Source:14)
                        at com.google.android.gms.auth.api.signin.GoogleSignIn.getSignedInAccountFromIntent(Unknown Source:37)
                        at com.example.root.firebasesignin.LoginActivity.onActivityResult(LoginActivity.java:63)
                        at android.app.Activity.dispatchActivityResult(Activity.java:7267)
                        at android.app.ActivityThread.deliverResults(ActivityThread.java:4524)
                        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4571)
                        at android.app.ActivityThread.-wrap19(Unknown Source:0)
                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1744)
                        at android.os.Handler.dispatchMessage(Handler.java:105)
                        at android.os.Looper.loop(Looper.java:164)
                        at android.app.ActivityThread.main(ActivityThread.java:6809)
                        at java.lang.reflect.Method.invoke(Native Method)
                        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

When I created the SHA-1 fingerprint, I did have to remake the debug keystore at ~/.android/debug.keystore using the command

keytool -genkey -v -keystore ~/.android/debug.keystore -storepass android -alias androiddebugkey -keypass android -dname "CN=Android Debug,O=Android,C=US"

and then I converted the keystore to pkcs12 using the command

keytool -importkeystore -srckeystore ~/.android/debug.keystore -destkeystore ~/.android/debug.keystore -deststoretype pkcs12

I have never used Firebase or Google sign-in for authentication, so I am very lost. I think the keystore might be the problem, and when I look in File > Project Structure > Signings nothing is shown in the left panel, and in File > Project Structure > Build Types the Signing Config box is empty. Again, I am very new to Firebase and Google authentication, so please excuse me if I'm forgetting something simple. Thank you in advance for your help.

This is the code for my main activity. The layout is simply a Google sign-in button and the action bar.

package com.example.root.firebasesignin;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GoogleAuthProvider;

public class LoginActivity extends AppCompatActivity implements View.OnClickListener {
    private static final String TAG = "GoogleSignInActivity";
    private static final int RC_SIGN_IN = 9001;

    private FirebaseAuth mAuth;
    private GoogleSignInClient mGoogleSignInClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        // Button listeners
        findViewById(R.id.sign_in_button).setOnClickListener(this);

        // Configure Google Sign In
        GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(getString(R.string.default_web_client_id))
                .requestEmail()
                .build();

        mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
        mAuth = FirebaseAuth.getInstance();
    }

    @Override
    public void onStart() {
        super.onStart();
        // Check if user is signed in (non-null) and update UI accordingly.
        FirebaseUser currentUser = mAuth.getCurrentUser();
        updateUI(currentUser);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == RC_SIGN_IN) {
            Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
            try {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = task.getResult(ApiException.class);
                firebaseAuthWithGoogle(account);
            } catch (ApiException e) {
                // Google Sign In failed, update UI appropriately
                Log.w(TAG, "Google sign in failed, resultCode: " + resultCode, e);
                updateUI(null);
            }
        }
    }

    private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
        Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());

        AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information
                            Log.d(TAG, "signInWithCredential:success");
                            FirebaseUser user = mAuth.getCurrentUser();
                            updateUI(user);
                        } else {
                            // If sign in fails, display a message to the user.
                            Log.w(TAG, "signInWithCredential:failure", task.getException());
                            Toast.makeText(LoginActivity.this, "Authentiation failed", Toast.LENGTH_LONG).show();
                            updateUI(null);
                        }
                    }
                });
    }

    private void signIn() {
        Intent signInIntent = mGoogleSignInClient.getSignInIntent();
        startActivityForResult(signInIntent, RC_SIGN_IN);
    }

    private void updateUI(FirebaseUser user) {
        if (user != null)
            findViewById(R.id.sign_in_button).setVisibility(View.GONE);
        else
            findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE);
    }

    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.sign_in_button)
            signIn();
    }
}

Answer 3

I am trying to integrate Google sign-in into my android app using Firebase, but I am running into issues. I am following the tutorial here , and I believe that I have followed it to the word. I added Firebase to my app, added my SHA-1 fingerprint, enabled Google sign-in, and added the dependencies to my grade files. Then, I copied the code in the github project linked to in the tutorial. However, when I run the application, and my code is below, I get an error when the sign-in fragment returns, and the result code is RESULT_CANCELED . This is the error output:

W/GoogleSignInActivity: Google sign in failed, resultCode: 0
                    com.google.android.gms.common.api.ApiException: 10: 
                        at com.google.android.gms.common.internal.zzb.zzy(Unknown Source:14)
                        at com.google.android.gms.auth.api.signin.GoogleSignIn.getSignedInAccountFromIntent(Unknown Source:37)
                        at com.example.root.firebasesignin.LoginActivity.onActivityResult(LoginActivity.java:63)
                        at android.app.Activity.dispatchActivityResult(Activity.java:7267)
                        at android.app.ActivityThread.deliverResults(ActivityThread.java:4524)
                        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4571)
                        at android.app.ActivityThread.-wrap19(Unknown Source:0)
                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1744)
                        at android.os.Handler.dispatchMessage(Handler.java:105)
                        at android.os.Looper.loop(Looper.java:164)
                        at android.app.ActivityThread.main(ActivityThread.java:6809)
                        at java.lang.reflect.Method.invoke(Native Method)
                        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

When I created the SHA-1 fingerprint, I did have to remake the debug keystore at ~/.android/debug.keystore using the command

keytool -genkey -v -keystore ~/.android/debug.keystore -storepass android -alias androiddebugkey -keypass android -dname "CN=Android Debug,O=Android,C=US"

and then I converted the keystore to pkcs12 using the command

keytool -importkeystore -srckeystore ~/.android/debug.keystore -destkeystore ~/.android/debug.keystore -deststoretype pkcs12

I have never used Firebase or Google sign-in for authentication, so I am very lost. I think the keystore might be the problem, and when I look in File > Project Structure > Signings nothing is shown in the left panel, and in File > Project Structure > Build Types the Signing Config box is empty. Again, I am very new to Firebase and Google authentication, so please excuse me if I'm forgetting something simple. Thank you in advance for your help.

This is the code for my main activity. The layout is simply a Google sign-in button and the action bar.

package com.example.root.firebasesignin;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GoogleAuthProvider;

public class LoginActivity extends AppCompatActivity implements View.OnClickListener {
    private static final String TAG = "GoogleSignInActivity";
    private static final int RC_SIGN_IN = 9001;

    private FirebaseAuth mAuth;
    private GoogleSignInClient mGoogleSignInClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        // Button listeners
        findViewById(R.id.sign_in_button).setOnClickListener(this);

        // Configure Google Sign In
        GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(getString(R.string.default_web_client_id))
                .requestEmail()
                .build();

        mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
        mAuth = FirebaseAuth.getInstance();
    }

    @Override
    public void onStart() {
        super.onStart();
        // Check if user is signed in (non-null) and update UI accordingly.
        FirebaseUser currentUser = mAuth.getCurrentUser();
        updateUI(currentUser);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == RC_SIGN_IN) {
            Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
            try {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = task.getResult(ApiException.class);
                firebaseAuthWithGoogle(account);
            } catch (ApiException e) {
                // Google Sign In failed, update UI appropriately
                Log.w(TAG, "Google sign in failed, resultCode: " + resultCode, e);
                updateUI(null);
            }
        }
    }

    private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
        Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());

        AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information
                            Log.d(TAG, "signInWithCredential:success");
                            FirebaseUser user = mAuth.getCurrentUser();
                            updateUI(user);
                        } else {
                            // If sign in fails, display a message to the user.
                            Log.w(TAG, "signInWithCredential:failure", task.getException());
                            Toast.makeText(LoginActivity.this, "Authentiation failed", Toast.LENGTH_LONG).show();
                            updateUI(null);
                        }
                    }
                });
    }

    private void signIn() {
        Intent signInIntent = mGoogleSignInClient.getSignInIntent();
        startActivityForResult(signInIntent, RC_SIGN_IN);
    }

    private void updateUI(FirebaseUser user) {
        if (user != null)
            findViewById(R.id.sign_in_button).setVisibility(View.GONE);
        else
            findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE);
    }

    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.sign_in_button)
            signIn();
    }
}

Answer 4

I am trying to integrate Google sign-in into my android app using Firebase, but I am running into issues. I am following the tutorial here , and I believe that I have followed it to the word. I added Firebase to my app, added my SHA-1 fingerprint, enabled Google sign-in, and added the dependencies to my grade files. Then, I copied the code in the github project linked to in the tutorial. However, when I run the application, and my code is below, I get an error when the sign-in fragment returns, and the result code is RESULT_CANCELED . This is the error output:

W/GoogleSignInActivity: Google sign in failed, resultCode: 0
                    com.google.android.gms.common.api.ApiException: 10: 
                        at com.google.android.gms.common.internal.zzb.zzy(Unknown Source:14)
                        at com.google.android.gms.auth.api.signin.GoogleSignIn.getSignedInAccountFromIntent(Unknown Source:37)
                        at com.example.root.firebasesignin.LoginActivity.onActivityResult(LoginActivity.java:63)
                        at android.app.Activity.dispatchActivityResult(Activity.java:7267)
                        at android.app.ActivityThread.deliverResults(ActivityThread.java:4524)
                        at android.app.ActivityThread.handleSendResult(ActivityThread.java:4571)
                        at android.app.ActivityThread.-wrap19(Unknown Source:0)
                        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1744)
                        at android.os.Handler.dispatchMessage(Handler.java:105)
                        at android.os.Looper.loop(Looper.java:164)
                        at android.app.ActivityThread.main(ActivityThread.java:6809)
                        at java.lang.reflect.Method.invoke(Native Method)
                        at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
                        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)

When I created the SHA-1 fingerprint, I did have to remake the debug keystore at ~/.android/debug.keystore using the command

keytool -genkey -v -keystore ~/.android/debug.keystore -storepass android -alias androiddebugkey -keypass android -dname "CN=Android Debug,O=Android,C=US"

and then I converted the keystore to pkcs12 using the command

keytool -importkeystore -srckeystore ~/.android/debug.keystore -destkeystore ~/.android/debug.keystore -deststoretype pkcs12

I have never used Firebase or Google sign-in for authentication, so I am very lost. I think the keystore might be the problem, and when I look in File > Project Structure > Signings nothing is shown in the left panel, and in File > Project Structure > Build Types the Signing Config box is empty. Again, I am very new to Firebase and Google authentication, so please excuse me if I'm forgetting something simple. Thank you in advance for your help.

This is the code for my main activity. The layout is simply a Google sign-in button and the action bar.

package com.example.root.firebasesignin;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Toast;

import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GoogleAuthProvider;

public class LoginActivity extends AppCompatActivity implements View.OnClickListener {
    private static final String TAG = "GoogleSignInActivity";
    private static final int RC_SIGN_IN = 9001;

    private FirebaseAuth mAuth;
    private GoogleSignInClient mGoogleSignInClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_login);

        // Button listeners
        findViewById(R.id.sign_in_button).setOnClickListener(this);

        // Configure Google Sign In
        GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(getString(R.string.default_web_client_id))
                .requestEmail()
                .build();

        mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
        mAuth = FirebaseAuth.getInstance();
    }

    @Override
    public void onStart() {
        super.onStart();
        // Check if user is signed in (non-null) and update UI accordingly.
        FirebaseUser currentUser = mAuth.getCurrentUser();
        updateUI(currentUser);
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == RC_SIGN_IN) {
            Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
            try {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = task.getResult(ApiException.class);
                firebaseAuthWithGoogle(account);
            } catch (ApiException e) {
                // Google Sign In failed, update UI appropriately
                Log.w(TAG, "Google sign in failed, resultCode: " + resultCode, e);
                updateUI(null);
            }
        }
    }

    private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {
        Log.d(TAG, "firebaseAuthWithGoogle:" + acct.getId());

        AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {
                            // Sign in success, update UI with the signed-in user's information
                            Log.d(TAG, "signInWithCredential:success");
                            FirebaseUser user = mAuth.getCurrentUser();
                            updateUI(user);
                        } else {
                            // If sign in fails, display a message to the user.
                            Log.w(TAG, "signInWithCredential:failure", task.getException());
                            Toast.makeText(LoginActivity.this, "Authentiation failed", Toast.LENGTH_LONG).show();
                            updateUI(null);
                        }
                    }
                });
    }

    private void signIn() {
        Intent signInIntent = mGoogleSignInClient.getSignInIntent();
        startActivityForResult(signInIntent, RC_SIGN_IN);
    }

    private void updateUI(FirebaseUser user) {
        if (user != null)
            findViewById(R.id.sign_in_button).setVisibility(View.GONE);
        else
            findViewById(R.id.sign_in_button).setVisibility(View.VISIBLE);
    }

    @Override
    public void onClick(View v) {
        if (v.getId() == R.id.sign_in_button)
            signIn();
    }
}

Answer 5

I had a similar situation using the following code:

private static final int PLAY_LOGIN = 1979;

GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN).build();
GoogleSignInClient client = GoogleSignIn.getClient(activity, gso);
activity.startActivityForResult(client.getSignInIntent(), PLAY_LOGIN);

And trying to get the sign in result in the method:

@Override
public boolean onActivityResult(@NonNull Context context, int requestCode, int resultCode, Intent data) {
    if (requestCode == PLAY_LOGIN) {
        if (resultCode == Activity.RESULT_OK) {
            Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
            // process successful login data here...
        } else {
            Toast.makeText(context, "login error!", Toast.LENGTH_LONG).show();
        }

        return true;
    }
    return false;
}

Sometimes (not always reproducible) the returned code would be not Activity.RESULT_OK , but Activity.RESULT_CANCELED - even though I always acceptedthe sign in option in the Google dialog...

So my code was displaying the Toast with "login error." and this has even caused my app not passing the Google review process.

To investigate the problem I have placed the debugger breakpoint at the line where the Toast is shown and just kept reinstalling my app and accepting the Google sign in dialog.

Then the breakpoint is sometimes hit and the Intent has the following mExtras value:

Bundle[{googleSignInStatus=Status{statusCode=unknown status code: 12502, resolution=null}}]

And according to the Google doc on GoogleSignInStatusCodes the code GoogleSignInStatusCodes.SIGN_IN_CURRENTLY_IN_PROGRESS=12502 means, that another sign in is already in progress:

So my answer is a heads up for anyone having this problem despite having everything configured correctly in the Firebase console.

You might want to handle this case in your code and display a different message to the user, maybe not an error, but just a warning.