Android app crashes on firebase phone authentication

Question

I am using firebase for phone number authentication.When I used my phone number, it automatically verifies it.But when I use another phone number I get classCastExceptio

Answer 1

I am too late but it worked for me, Use

mAuth.signInWithCredential(credential)
            .addOnCompleteListener(new OnCompleteListener<AuthResult>() {
                @Override
                public void onComplete(@NonNull Task<AuthResult> task) {
                    if (task.isSuccessful()) {
                        FirebaseUser user = Objects.requireNonNull(task.getResult()).getUser();
                        // handel success
                    } else if (task.isCanceled()){
                       // handel error
                    }
                }
            });

Instead of using

 mAuth.signInWithCredential(credential)
                .addOnCompleteListener((Executor) 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 = task.getResult().getUser();
                                                      } else {
                            // Sign in failed, display a message and update the UI
                            Log.w(TAG, "signInWithCredential:failure", task.getException());
                            if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) {
                                // The verification code entered was invalid
                            }
                        }
                    }
                });

I think that (Executer)this context is creating the problem try removing that, not just Executer but any context generates error, I don't know why..

Answer 2

In case you don't need a reference to an Activity then replace (Executor) this with the following code:

new Executor() {
    @Override
    public void execute(Runnable command) {}
}

Answer 3

I don't know what you're trying to do with this line:

.addOnCompleteListener((Executor) this, new OnCompleteListener<AuthResult>() {

Casting this to Executor doesn't seem to make sense. What you want instead of this is a reference to the current Activity. Try getActivity() instead to get this reference.