Validate Mobile number with the country code

Question

I want to validate the mobile number user enters. I have two edit texts one for the code i.e. +91,0 etc and another for the phone number.

I have a question that how

Answer 1

Try this Example...

activity_main.xml

MainActivity.java

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.TextUtils;
import android.util.Patterns;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;
import com.google.i18n.phonenumbers.NumberParseException;
import com.google.i18n.phonenumbers.PhoneNumberUtil;
import com.google.i18n.phonenumbers.Phonenumber;

public class MainActivity extends AppCompatActivity {

TextView tvIsValidPhone;
EditText edtPhone;
EditText edtCountryCode;
Button btnValidate;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    tvIsValidPhone = (TextView) findViewById(R.id.tvIsValidPhone);
    edtCountryCode = (EditText) findViewById(R.id.edtCountryCode);
    edtPhone = (EditText) findViewById(R.id.edtPhoneNumber);
    btnValidate = (Button) findViewById(R.id.btnValidate);
    btnValidate.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            String countryCode = edtCountryCode.getText().toString().trim();
            String phoneNumber = edtPhone.getText().toString().trim();
            if(countryCode.length() > 0 && phoneNumber.length() > 0){
                if(isValidPhoneNumber(phoneNumber)){
                    boolean status = validateUsing_libphonenumber(countryCode, phoneNumber);
                    if(status){
                        tvIsValidPhone.setText("Valid Phone Number (libphonenumber)");
                    } else {
                        tvIsValidPhone.setText("Invalid Phone Number (libphonenumber)");
                    }
                }
                else {
                    tvIsValidPhone.setText("Invalid Phone Number (isValidPhoneNumber)");
                }
            } else {
                Toast.makeText(getApplicationContext(), "Country Code and Phone Number is required", Toast.LENGTH_SHORT).show();
            }
        }
    });
}

private boolean isValidPhoneNumber(CharSequence phoneNumber) {
    if (!TextUtils.isEmpty(phoneNumber)) {
        return Patterns.PHONE.matcher(phoneNumber).matches();
    }
    return false;
}

private boolean validateUsing_libphonenumber(String countryCode, String phNumber) {
    PhoneNumberUtil phoneNumberUtil = PhoneNumberUtil.getInstance();
    String isoCode = phoneNumberUtil.getRegionCodeForCountryCode(Integer.parseInt(countryCode));
    Phonenumber.PhoneNumber phoneNumber = null;
    try {
        //phoneNumber = phoneNumberUtil.parse(phNumber, "IN");  //if you want to pass region code
        phoneNumber = phoneNumberUtil.parse(phNumber, isoCode);
    } catch (NumberParseException e) {
        System.err.println(e);
    }

    boolean isValid = phoneNumberUtil.isValidNumber(phoneNumber);
    if (isValid) {
        String internationalFormat = phoneNumberUtil.format(phoneNumber, PhoneNumberUtil.PhoneNumberFormat.INTERNATIONAL);
        Toast.makeText(this, "Phone Number is Valid " + internationalFormat, Toast.LENGTH_LONG).show();
        return true;
    } else {
        Toast.makeText(this, "Phone Number is Invalid " + phoneNumber, Toast.LENGTH_LONG).show();
        return false;
    }
}}

Download jar file and add in libs folder from below link.. http://www.java2s.com/Code/Jar/l/Downloadlibphonenumber41jar.htm