implementation 'com.sdsmdg.harjot:croller:1.0.7'

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 
    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:background="#FFFFFF"
    tools:context=".MainActivity">

    <com.sdsmdg.harjot.crollerTest.Croller
        android:id="@+id/croller"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_centerInParent="true"
        app:back_circle_color="#EDEDED"
        app:indicator_color="#0B3C49"
        app:indicator_width="10"
        app:is_continuous="false"
        app:label="Set Difficulty Level"
        app:label_color="#000000"
        app:main_circle_color="#FFFFFF"
        app:max="50"
        app:progress_primary_color="#0B3C49"
        app:progress_secondary_color="#EDEDED"
        app:start_offset="45">

</RelativeLayout>

package org.geeksforgeeks.croller

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;
import com.sdsmdg.harjot.crollerTest.Croller;
import com.sdsmdg.harjot.crollerTest.OnCrollerChangeListener;

public class MainActivity extends AppCompatActivity {

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

        Croller croller = findViewById(R.id.croller);

        // when there is a change in the progress of croller
        // this function get invoked automatically
        croller.setOnCrollerChangeListener(
            new OnCrollerChangeListener() {
            @Override
            public void onProgressChanged(Croller croller,
                        int progress) {

            }

            // when the user is starting to change the progress
            // this function gets invoked automatically.
            @Override
            public void onStartTrackingTouch(Croller croller) {
                Toast.makeText(MainActivity.this, 
                      "Start", Toast.LENGTH_SHORT).show();
            }

            // when the user stops to change the progress
            // this function gets invoked automatically.
            @Override
            public void onStopTrackingTouch(Croller croller) {
                Toast.makeText(MainActivity.this, 
                      "Stop", Toast.LENGTH_SHORT).show();
            }
        });

    }
}