numeric formatted edittext with custom postfix string

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <EditText
        android:id="@+id/edt"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:digits="01234 56789ریال,"
        android:inputType="number" />

</LinearLayout>

MainActivity.java

package ir.technopedia.iottest;

import android.icu.text.DecimalFormat;
import android.icu.text.NumberFormat;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.text.Editable;
import android.text.TextWatcher;
import android.widget.EditText;

import java.util.Locale;

public class MainActivity extends AppCompatActivity {

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

        EditText edt = findViewById(R.id.edt);

        edt.addTextChangedListener(new CurrencyTextWatcher(edt));
    }

}

class CurrencyTextWatcher implements TextWatcher {

    boolean mEditing;
    EditText edt;

    public CurrencyTextWatcher(EditText edt) {
        mEditing = false;
        this.edt = edt;
    }

    public synchronized void afterTextChanged(Editable s) {
        edt.removeTextChangedListener(this);

        try {
            String originalString = s.toString();

            Long longval;
            if (originalString.contains(" ")) {
                originalString = originalString.replaceAll(" ", "");
            }
            if (originalString.contains(",")) {
                originalString = originalString.replaceAll(",", "");
            }
            if (originalString.contains("ریال")) {
                originalString = originalString.replaceAll("ریال", "");
            }
            longval = Long.parseLong(originalString);

            DecimalFormat formatter = (DecimalFormat) NumberFormat.getInstance(Locale.US);
            formatter.applyPattern("#,###,###,###");
            String formattedString = formatter.format(longval);

            //setting text after format to EditText
            if (formattedString.length() > 0){
                edt.setText(formattedString + " ریال");
                edt.setSelection(formattedString.length());
            }
            else
                edt.setText("");
        } catch (NumberFormatException nfe) {
            nfe.printStackTrace();
        }

        edt.addTextChangedListener(this);
    }

    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    }

    public void onTextChanged(CharSequence s, int start, int before, int count) {
    }

}