Android 시크바와 프로그레스바 보여주기

package com.example.challenge6;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.SeekBar;

import butterknife.BindView;
import butterknife.ButterKnife;

public class MainActivity extends AppCompatActivity {
    @BindView(R.id.seekBar)
    SeekBar seekBar;
    @BindView(R.id.progressBar)
    ProgressBar progressBar;
    @BindView(R.id.editText)
    EditText editText;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);

        seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                progressBar.setProgress(progress);
                editText.setText(String.valueOf(progress));
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

            }
        });
    }
}

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:padding="40dp">

        <SeekBar
            android:id="@+id/seekBar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:max="100"
            />
        <ProgressBar
            android:id="@+id/progressBar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            style="@style/Widget.AppCompat.ProgressBar.Horizontal"
            android:max="100"
            android:layout_marginTop="100dp"
            />
        <EditText
            android:id="@+id/editText"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="100dp"
            android:ems="10"
            android:gravity="center"
            android:inputType="textPersonName"
            android:text="0"
            android:textSize="40dp"

            />
    </LinearLayout>

</android.support.constraint.ConstraintLayout>

맨위 시크바의 막대기안 원을 터치하고 왔다갔다할때마다 프로그레스바와, EditText의 숫자가 따라서 변한다.