Google Play Games Login with Firebase notworking - firebase

Question

Hello here is my code for my App, and I try to login via Google Play Games, but it doesn't work. I hope you can tell me some solutions. I have Google Login working, on another activity but Play Games Login won't work.
public class start extends AppCompatActivity implements
View.OnClickListener{
private static final String TAG = "StartActivity";
GoogleApiClient mGoogleApiClient;
GoogleSignInClient mGoogleSignInClient;
SignInButton signInButton;
private AdView mAdview;
private InterstitialAd interstitialAd;
private FirebaseAnalytics mFirebaseAnalytics;
private ProgressDialog loadingBar;
private Status statusTextView;
TextView LoginUserName, LoginUserEmail;
private FirebaseAuth mAuth;
FirebaseAuth.AuthStateListener mAuthListener;
private Button LogOutBtn;
private Button playgames;
private TextView mStatusTextView;
private TextView mDetailTextView;
private TextView mPlayername;
private boolean mResolvingConnectionFailure = false;
private boolean mAutoStartSignInflow = true;
private boolean mSignInClicked = false;
private final static int RC_SIGN_IN = 9001;
#Override
protected void onStart() {
super.onStart();
mAuth.addAuthStateListener(mAuthListener);
FirebaseUser currentUser = mAuth.getCurrentUser();
signInSilently();
mGoogleApiClient.connect();
updateUI(currentUser);
}
//
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_start);
signInButton = (SignInButton) findViewById(R.id.sign_in_button);
LogOutBtn = findViewById(R.id.logout);
mAuth = FirebaseAuth.getInstance();
mStatusTextView = findViewById(R.id.status);
mDetailTextView = findViewById(R.id.detail);
mPlayername = findViewById(R.id.mPlayername);
playgames = findViewById(R.id.playgames);
signInButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(start.this, SignIn.class));
}
});
LogOutBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(start.this, SignIn.class));
}
});
playgames.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startSignInIntent();
}
});
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_GAMES_SIGN_IN)
.requestServerAuthCode(XXXXXX)
.requestEmail()
.requestProfile()
.requestIdToken(XXXXXX)
.build();
mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
mGoogleApiClient = new GoogleApiClient.Builder(this)
.enableAutoManage(this, new GoogleApiClient.OnConnectionFailedListener() {
#Override
public void onConnectionFailed(#NonNull ConnectionResult connectionResult) {
Toast.makeText(start.this, "Something went wrong", Toast.LENGTH_SHORT).show();
}
})
.addApi(Auth.GOOGLE_SIGN_IN_API, gso)
.build();
//End of Authentification
}
// Call this both in the silent sign-in task's OnCompleteListener and in the
// Activity's onActivityResult handler.
private void firebaseAuthWithPlayGames(GoogleSignInAccount acct) {
Log.d(TAG, "firebaseAuthWithPlayGames:" + acct.getId());
AuthCredential credential = PlayGamesAuthProvider.getCredential(acct.getServerAuthCode());
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(start.this, "Authentication failed.",
Toast.LENGTH_SHORT).show();
updateUI(null);
}
// ...
}
});
}
private void signInSilently() {
GoogleSignInClient signInClient = GoogleSignIn.getClient(this,
GoogleSignInOptions.DEFAULT_GAMES_SIGN_IN);
signInClient.silentSignIn().addOnCompleteListener(this,
new OnCompleteListener<GoogleSignInAccount>() {
#Override
public void onComplete(#NonNull Task<GoogleSignInAccount> task) {
if (task.isSuccessful()) {
// The signed in account is stored in the task's result.
GoogleSignInAccount signedInAccount = task.getResult();
firebaseAuthWithPlayGames(signedInAccount);
} else {
// Player will need to sign-in explicitly using via UI
Toast.makeText(start.this, "Cannot Connect", Toast.LENGTH_SHORT).show();
}
}
});
}
#Override
protected void onResume() {
super.onResume();
signInSilently();
}
private void startSignInIntent() {
GoogleSignInClient signInClient = GoogleSignIn.getClient(this,
GoogleSignInOptions.DEFAULT_GAMES_SIGN_IN);
Intent intent = signInClient.getSignInIntent();
startActivityForResult(intent, RC_SIGN_IN);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RC_SIGN_IN) {
GoogleSignInResult result = Auth.GoogleSignInApi.getSignInResultFromIntent(data);
if (result.isSuccess()) {
// The signed in account is stored in the result.
GoogleSignInAccount signedInAccount = result.getSignInAccount();
firebaseAuthWithPlayGames(signedInAccount);
} else {
String message = result.getStatus().getStatusMessage();
if (message == null || message.isEmpty()) {
Toast.makeText(start.this, "Cannot Connect 1", Toast.LENGTH_SHORT).show();
}
new AlertDialog.Builder(this).setMessage(message)
.setNeutralButton(android.R.string.ok, null).show();
}
}
}
private void updateUI(FirebaseUser user) {
if (user != null) {
String playerName = user.getDisplayName();
mPlayername.setText(playerName);
// The user's Id, unique to the Firebase project.
// Do NOT use this value to authenticate with your backend server, if you
// have one; use FirebaseUser.getIdToken() instead.
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) {
switch (v.getId()) {
case R.id.sign_in_button:
startActivity(new Intent(start.this, SignIn.class));
break;
case R.id.logout:
startActivity(new Intent(start.this, SignIn.class));
break;
case R.id.playgames:
startSignInIntent();
break;
// ...
}
}
}
I really hope someone has a working example, or can help me here, cause I'm stuck at this code for a month now.