我如何检测是否有人输入了错误的 otp

Question

我只是想在用户输入错误的 otp 时向他显示错误，我该如何实现，因为如果他输入错误的代码，应用程序就会崩溃。

这是我的代码：

private void signInWithPhoneAuthCredential(PhoneAuthCredential credential) {


    auth.signInWithCredential(credential).addOnCompleteListener(new OnCompleteListener<AuthResult>() {
        @Override
        public void onComplete(@NonNull Task<AuthResult> task) {
            if (task.isSuccessful()) {
                proceedProgressDialog.dismiss();
                FirebaseUser user = auth.getCurrentUser();
                String currentUserMobile = user.getPhoneNumber();


                CollectionReference reference = FirebaseFirestore.getInstance().collection("Users");
                Query query = reference.whereEqualTo("Mobile", currentUserMobile);
                query.get().addOnCompleteListener(new OnCompleteListener<QuerySnapshot>() {
                    @Override
                    public void onComplete(@NonNull Task<QuerySnapshot> task) {
                        if (task.isSuccessful()) {
                            for (DocumentSnapshot snapshot : task.getResult()) {
                                String userCred = snapshot.getString("Mobile");
                                if (userCred.equals(currentUserMobile)) {
                                    if (user != null) {

                                        SharedPreferences.Editor editor = preferences.edit();
                                        editor.putString(KEY_MOBILE, currentUserMobile);
                                        editor.commit();

                                        Intent intent = new Intent(LoginActivity.this, DashboardActivity.class);
                                        startActivity(intent);
                                        finishAffinity();

                                    }
                                }
                            }
                        }
                        if (task.getResult().size() == 0) {
                            Toast.makeText(LoginActivity.this, "User Not Exist", Toast.LENGTH_SHORT).show();
                            Intent intent = new Intent(LoginActivity.this, AdditionalDetailsActivity.class);
                            startActivity(intent);
                            finish();
                        }

                    }
                });

            } else {
                // Here I want to show wrong otp error
            }
        }
    });
}

我想检查是否有人输入错误的 otp 可能会显示错误

Answer 1

if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) { Toast.makeText(Verification.this, "Incorrect OTP entered", Toast.LENGTH_LONG).show();}

Answer 2

That will put in the else part where i write a comment to put error

if (task.getException() instanceof FirebaseAuthInvalidCredentialsException) {
                    proceedProgressDialog.dismiss();
                    binding.getStartedOTP.setError("Invalid OTP");
                    Toast.makeText(LoginActivity.this, "Incorrect OTP entered", Toast.LENGTH_LONG).show();
                }