如何使用Java Android在Firebase中发送OTP代码短信？

我有一个带有Firebase的Android Studio项目，我已经正确实现了Firebase。

im trying to make a sign in with sms authentication, everything works but no sms arrives

我已经配置了Firebase身份验证

这是一些代码

mCallbacks = new PhoneAuthProvider.OnVerificationStateChangedCallbacks() {
                @Override
                public void onVerificationCompleted(PhoneAuthCredential credential) {
                    Toast.makeText(MainActivity.this, "Verification Complete", Toast.LENGTH_SHORT).show();
                }

                @Override
                public void onVerificationFailed(FirebaseException e) {
                    Toast.makeText(MainActivity.this, "Verification Failed", Toast.LENGTH_SHORT).show();
                }

                @Override
                public void onCodeSent(String verificationId,
                                       PhoneAuthProvider.ForceResendingToken token) {
                    Toast.makeText(MainActivity.this, "Code Sent", Toast.LENGTH_SHORT).show();
                }
            };

@Override
    public void onClick(View view) {
        switch (view.getId()) {
            case R.id.bt_send_otp:

                PhoneAuthProvider.getInstance().verifyPhoneNumber(
                        etPhone.getText().toString(),        // Phone number to verify
                        1,                 // Timeout duration
                        TimeUnit.MINUTES,   // Unit of timeout
                        this,               // Activity (for callback binding)
                        mCallbacks);        // OnVerificationStateChangedCallbacks

                break;
            case R.id.bt_resend_otp:
                break;
            case R.id.bt_verify_otp:
                break;
        }
   }

当我按下send otp按钮时，出现“代码已发送”的吐司

谢谢您的帮助 ：）