ProgressBar pgOTP;

String soDienThoai;

String codeOTP;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_otp);

TextView tvGuiLai = findViewById(R.id.textViewGuiLaiOTP);

TextView tvTiepTuc = findViewById(R.id.textViewHoanTatOTP);

EditText edtOTP1 = findViewById(R.id.editTextNumber4);

EditText edtOTP2 = findViewById(R.id.editTextNumber5);

EditText edtOTP3 = findViewById(R.id.editTextNumber6);

EditText edtOTP4 = findViewById(R.id.editTextNumber7);

EditText edtOTP5 = findViewById(R.id.editTextNumber8);

EditText edtOTP6 = findViewById(R.id.editTextNumber9);

pgOTP = findViewById(R.id.progressBarOTP);

soDienThoai = getIntent().getStringExtra("tenTaiKhoan");

SendOTPPhoneNumber(soDienThoai);

tvGuiLai.setOnClickListener(v -> SendOTPPhoneNumber(soDienThoai));

tvTiepTuc.setOnClickListener(v -> {

String OTP1 = edtOTP1.getText().toString();

String OTP2 = edtOTP2.getText().toString();

String OTP3 = edtOTP3.getText().toString();

String OTP4 = edtOTP4.getText().toString();

String OTP5 = edtOTP5.getText().toString();

String OTP6 = edtOTP6.getText().toString();

if (OTP1.isEmpty() || OTP2.isEmpty()

|| OTP3.isEmpty() || OTP4.isEmpty()

|| OTP5.isEmpty() || OTP6.isEmpty()) {

showToast(getString(R.string.OTP_empty));

} else {

String readOTP = OTP1+OTP2+OTP3+OTP4+OTP5+OTP6;

pgOTP.setVisibility(View.VISIBLE);

verifyCode(readOTP);

}

});

}

private void SendOTPPhoneNumber(String phone) {

StringBuilder sdt = new StringBuilder("+84");

for (int i=1; i<phone.length(); i++) {

sdt.append(phone.charAt(i));

}

PhoneAuthProvider.OnVerificationStateChangedCallbacks mCallBacks

= new PhoneAuthProvider.OnVerificationStateChangedCallbacks() {

@Override

public void onCodeSent(@NonNull String s, @NonNull PhoneAuthProvider.ForceResendingToken forceResendingToken) {

super.onCodeSent(s, forceResendingToken);

codeOTP = s;

}

@Override

public void onVerificationCompleted(@NonNull PhoneAuthCredential phoneAuthCredential) {

String code = phoneAuthCredential.getSmsCode();

if (code != null) {

pgOTP.setVisibility(View.INVISIBLE);

verifyCode(code);

}

}

@Override

public void onVerificationFailed(@NonNull FirebaseException e) {

if (e instanceof FirebaseAuthInvalidCredentialsException) {

showToast(getString(R.string.yeu_cau_khong_hop_le));

} else if (e instanceof FirebaseTooManyRequestsException) {

showToast(getString(R.string.vuot_qua_OTP));

}

}

};

PhoneAuthProvider.getInstance().verifyPhoneNumber(

sdt.toString(),

60,

TimeUnit.SECONDS,

this,

mCallBacks

);

}

private void verifyCode(String verifyCode) {

PhoneAuthCredential credential = PhoneAuthProvider.getCredential(codeOTP, verifyCode);

FirebaseAuth auth = FirebaseAuth.getInstance();

auth.signInWithCredential(credential)

.addOnCompleteListener(OTP_Activity.this, task -> {

if (task.isSuccessful()) {

Intent intent = new Intent(getApplicationContext(), CreateNewProjectActivity.class);

intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);

startActivity(intent);

} else {

showToast(Objects.requireNonNull(task.getException()).getMessage());

}

});

}

private void showToast(String txt) {

Toast.makeText(this, txt, Toast.LENGTH_SHORT).show();

}

Kiểm tra đăng nhập

private FirebaseAuth mAuth;

mAuth = FirebaseAuth.getInstance();

FirebaseUser user = mAuth.getCurrentUser();

if (user != null) {

Đã đăng nhập

}