Ihave this error :Attempt to invoke virtual method 'void com.hbb20.CountryCodePicker.registerCarrierNumberEditText(android.widget.EditText)' on a null object reference

package com.example.geolab;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import com.hbb20.CountryCodePicker;

public class PhoneLoginActivity extends AppCompatActivity {

private CountryCodePicker ccp;
private EditText userPhoneNumber;
private Button cuntiniueToVerify;
@Override
protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

InitializeFields();

cuntiniueToVerify.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view)
{
Intent OTPintent = new Intent(PhoneLoginActivity.this,OTPActivity.class);
OTPintent.putExtra("mobile",ccp.getFullNumberWithPlus().replace(" ",""));
startActivity(OTPintent);
}
});

}

private void InitializeFields()
{
userPhoneNumber = (EditText) findViewById(R.id.phone_number_id);
ccp = (CountryCodePicker) findViewById(R.id.ccp);
ccp.registerCarrierNumberEditText(userPhoneNumber);
cuntiniueToVerify = (Button) findViewById(R.id.cuntiniue_button);
}

}

//------------------------------------------------------layout-------------------------------------------

Start with the pasted PhoneLoginActivity, especially InitializeFields(), and compare its findViewById calls with the embedded layout XML. Reproduce the crash at registerCarrierNumberEditText and determine why the CountryCodePicker lookup is null. Done means the phone-login screen initializes without this null-reference exception.

索引モデルが issue の本文から書いたものです。