OTP验证

Question

任何人都可以帮助我，为什么这是一个错误？当我单击send otp时，我正在在Android上进行OTP，之后出现错误，并且似乎未发送otp代码。

error

Mainactivity.java

public class MainActivity extends AppCompatActivity {

private Button submitBtn;
private EditText phoneText;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    submitBtn = findViewById(R.id.submit);
    phoneText = findViewById(R.id.phone_text);
    buttonSubmitListener();
}

private void buttonSubmitListener() {
    submitBtn.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            // TODO : Cek string edittext kosong atau tidak
            if (!phoneText.getText().toString().isEmpty()) {
                if (phoneText.getText().toString().charAt(0) == '0') {
                    String temp = "+62" + phoneText.getText().toString().substring(1);

                    // TODO : Passing phone number ke OTP Activity
                    Bundle bundle = new Bundle();
                    Intent intent = new Intent(MainActivity.this, OtpActivity.class);
                    bundle.putString("phone", temp);
                    intent.putExtras(bundle);
                    startActivity(intent);
                }
            } else {
                Toast.makeText(MainActivity.this, "Masukkan nomor telpon", Toast.LENGTH_SHORT).show();
            }
        }
    });
}

}

Otpactivity.java

私有PhoneAuthProvider.OnVerificationStateChangedCallbacks回调（）{

    return new PhoneAuthProvider.OnVerificationStateChangedCallbacks() {
        @Override
        public void onVerificationCompleted(PhoneAuthCredential phoneAuthCredential) {
            Log.e("onVerificationCompleted", phoneAuthCredential.getSmsCode());
        }

        @Override
        public void onVerificationFailed(FirebaseException e) {

            if (e instanceof FirebaseAuthInvalidCredentialsException) {
                Log.e("invalidCredential",e.toString());
            } else if (e instanceof FirebaseTooManyRequestsException) {
                Log.e("out of quota", e.toString());
            }
        }

        @Override
        public void onCodeAutoRetrievalTimeOut(String s) {
            super.onCodeAutoRetrievalTimeOut(s);
            Log.e("", s);
        }

        @Override
        public void onCodeSent(String verificationId, PhoneAuthProvider.ForceResendingToken forceResendingToken) {
            super.onCodeSent(verificationId, forceResendingToken);

            Log.e("","onCodeSent:" + verificationId);
            mVerificationId = verificationId;
            mResendToken = forceResendingToken;
        }
    };
}