[Android] 피아노 어플만들기

미니 플젝으로 피아노 만들어보았다.

HorizontalScrollview에 FrameLayout을 얹고 white keyboard, black keyboard를 배치하였다.

피아노 키에 대해서 잘 모르는 관계로... 저 첫시작 도가 c1인지 c2인지.. 잘 모르겠다..

피아노 음은 일일이 음을 따올수가 없어서 어플 다운받아서 디컴파일하여 음을 가져왔다.

https://apkpure.com/ << 컴퓨터에서 apk파일 다운로드 하는 사이트

디컴파일 하는 방법을 이것 저것 다 시도해보다가

https://www.youtube.com/watch?v=VLsJETb3m4M << 유튜브의 이 영상을 보고 많은 도움을 얻었다.

http://www.javadecompilers.com/ << 영상에서 소개해주는 디컴파일 사이트

(참고로..

평소 음원 확장자를 .mp4나 wav파일만 알고 있어서 이걸로 찾으려니 안찾아졌다..

디컴파일하여 얻은 음원의 확장자는 ogg였다.

ogg란?

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Ogg(오그)는 멀티미디어 컨테이너 포맷이다. 특허권으로 보호되지 않는 오픈 표준 파일 형식으로 멀티미디어 비트스트림을 효율적으로 전송하고 처리할 수 있게 하기 위해 Xiph.Org 재단에서 개발한 것이다.

출처 - 위키백과

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지식 하나 더 얻어간다@_@)

프로젝트 폴더\res폴더에 디컴파일하여 얻은 음원을 raw폴더를 생성하여 여기에 넣어준다.

레이아웃 가로모드 설정하기 위해서 프로젝트 폴더 경로를 따라 res 폴더로 들어가서 한개로 되어있는 layout폴더를

이렇게 두개로 나눠준다.(각각 폴더 안에 xml파일 포함되어 있음.)

결과적으로 안드로이드 스튜디오 가서 폴더를 확인해보면 layout폴더 밑에 actibvity_main(2)라고 설정 되어있는것을 볼 수 있다.

다음은 piano xml, java코드이다.

< activity_main.xml> 

버튼이 많은 관계로 엄청 길다...

<?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"
    android:weightSum="10"
    tools:context=".MainActivity">
 
    <HorizontalScrollView
        android:id="@+id/sv"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="10">
 
        <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">
 
            <!--White KeyBoard-->
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal">
 
                <ImageButton
                    android:id="@+id/do1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/re1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/mi1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/pa1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/sol1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/ra1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/si1"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <!--///////////////////////-->
                <ImageButton
                    android:id="@+id/do2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/re2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/mi2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/pa2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/sol2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/ra2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/si2"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <!--///////////////////////-->
 
                <ImageButton
                    android:id="@+id/do3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/re3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/mi3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/pa3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/sol3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/ra3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/si3"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <!--///////////////////////-->
                <ImageButton
                    android:id="@+id/do4"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/re4"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/mi4"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/pa4"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/sol4"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/ra4"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
 
                <ImageButton
                    android:id="@+id/si4"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:onClick="clickedKeyboard"
                    android:padding="0dp"
                    app:srcCompat="@drawable/whitebutton" />
            </LinearLayout>
 
            <!--Black KeyBoard-->
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="horizontal">
 
                <ImageButton
                    android:id="@+id/doShap1"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="95dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/reShap1"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="60dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/paShap1"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="190dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/solShap1"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="60dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/raShap1"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="60dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <!--///////////////////////-->
 
                <ImageButton
                    android:id="@+id/doShap2"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="190dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/reShap2"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="69dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/paShap2"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="185dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/solShap2"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="60dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/raShap2"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="60dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <!--///////////////////////-->
 
                <ImageButton
                    android:id="@+id/doShap3"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="190dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/reShap3"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="69dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/paShap3"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="185dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/solShap3"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="60dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/raShap3"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="60dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <!--///////////////////////-->
 
                <ImageButton
                    android:id="@+id/doShap4"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="190dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/reShap4"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="69dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/paShap4"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="185dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/solShap4"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="60dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
 
                <ImageButton
                    android:id="@+id/raShap4"
                    android:layout_width="wrap_content"
                    android:layout_height="180dp"
                    android:layout_marginLeft="60dp"
                    android:onClick="blackKeyBoardClicked"
                    android:padding="0dp"
                    app:srcCompat="@drawable/blackbutton" />
            </LinearLayout>
        </FrameLayout>
    </HorizontalScrollView>
</LinearLayout>

<MainActivity.java>

package com.example.sh.piano;
 
import android.content.pm.ActivityInfo;
import android.media.AudioManager;
import android.media.SoundPool;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.HorizontalScrollView;
import android.widget.ImageButton;
 
 
public class MainActivity extends AppCompatActivity {
 
 
    SoundPool pool;
    //White keyBoard
    int do1, re1, mi1, pa1, sol1, ra1, si1;
    int do2, re2, mi2, pa2, sol2, ra2, si2;
    int do3, re3, mi3, pa3, sol3, ra3, si3;
    int do4, re4, mi4, pa4, sol4, ra4, si4;
    //Black KeyBoard
    int doShap1, reShap1, paShap1, solShap1, raShap1;
    int doShap2, reShap2, paShap2, solShap2, raShap2;
    int doShap3, reShap3, paShap3, solShap3, raShap3;
    int doShap4, reShap4, paShap4, solShap4, raShap4;
 
    private float x, y;
 
    ImageButton doBtn1, reBtn1, miBtn1, paBtn1, solBtn1, raBtn1, siBtn1;
    ImageButton doBtn2, reBtn2, miBtn2, paBtn2, solBtn2, raBtn2, siBtn2;
    ImageButton doBtn3, reBtn3, miBtn3, paBtn3, solBtn3, raBtn3, siBtn3;
    ImageButton doBtn4, reBtn4, miBtn4, paBtn4, solBtn4, raBtn4, siBtn4;
 
 
    private HorizontalScrollView sv;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
                WindowManager.LayoutParams.FLAG_FULLSCREEN);
 
        setContentView(R.layout.activity_main);
 
        getXmlId();
        loadMusic();
    }
    public void controlScroll(View view) {
        View.OnTouchListener touchListener = new View.OnTouchListener() {
            @Override
            public boolean onTouch(View view, MotionEvent motionEvent) {
                final int action = motionEvent.getAction();
                switch (action & MotionEvent.ACTION_MASK) {
                    case MotionEvent.ACTION_DOWN :
                        // 처음 터치가 눌러졌을 때
                        // TodoList : 해당 건반만 소리 나게 설정
 
                        break;
                    case MotionEvent.ACTION_MOVE:
                        // 터치가 눌린 상태에서 움직일 때
                        // "도레미파솔라시도"처럼 음 소리나게
                        // 스크롤뷰 움직이지 못하게 막기
 
                        break;
                    case MotionEvent.ACTION_UP :
                        // 터치가 떼어졌을 때
                        // 소리안남
 
                        break;
                    case MotionEvent.ACTION_POINTER_DOWN:
                        // 터치가 두 개 이상 && 눌러졌을 때
 
                        // TodoList : 스크롤 움직이기
                        final int pointerIndex = (action & MotionEvent.ACTION_POINTER_INDEX_MASK) >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
                        // x = getX(pointerIndex);
                        // y = getY(pointerIndex);
                        break;
                }
                return true;
            }
        };
    }
 
    public void clickedKeyboard(View view) {
        switch (view.getId()) {
            //White KeyBoard Id
            case R.id.do1:
                pool.play(do1, 1, 1, 0, 0, 1);
                break;
            case R.id.re1:
                pool.play(re1, 1, 1, 0, 0, 1);
                break;
            case R.id.mi1:
                pool.play(mi1, 1, 1, 0, 0, 1);
                break;
            case R.id.pa1:
                pool.play(pa1, 1, 1, 0, 0, 1);
                break;
            case R.id.sol1:
                pool.play(sol1, 1, 1, 0, 0, 1);
                break;
            case R.id.ra1:
                pool.play(ra1, 1, 1, 0, 0, 1);
                break;
            case R.id.si1:
                pool.play(si1, 1, 1, 0, 0, 1);
                break;
            ////////////////////////////////////////////////////////////
            case R.id.do2:
                pool.play(do2, 1, 1, 0, 0, 1);
                break;
            case R.id.re2:
                pool.play(re2, 1, 1, 0, 0, 1);
                break;
            case R.id.mi2:
                pool.play(mi2, 1, 1, 0, 0, 1);
                break;
            case R.id.pa2:
                pool.play(pa2, 1, 1, 0, 0, 1);
                break;
            case R.id.sol2:
                pool.play(sol2, 1, 1, 0, 0, 1);
                break;
            case R.id.ra2:
                pool.play(ra2, 1, 1, 0, 0, 1);
                break;
            case R.id.si2:
                pool.play(si2, 1, 1, 0, 0, 1);
                break;
            ////////////////////////////////////////////////////////////
            case R.id.do3:
                pool.play(do3, 1, 1, 0, 0, 1);
                break;
            case R.id.re3:
                pool.play(re3, 1, 1, 0, 0, 1);
                break;
            case R.id.mi3:
                pool.play(mi3, 1, 1, 0, 0, 1);
                break;
            case R.id.pa3:
                pool.play(pa3, 1, 1, 0, 0, 1);
                break;
            case R.id.sol3:
                pool.play(sol3, 1, 1, 0, 0, 1);
                break;
            case R.id.ra3:
                pool.play(ra3, 1, 1, 0, 0, 1);
                break;
            case R.id.si3:
                pool.play(si3, 1, 1, 0, 0, 1);
                break;
            ////////////////////////////////////////////////////////////
            case R.id.do4:
                pool.play(do4, 1, 1, 0, 0, 1);
                break;
            case R.id.re4:
                pool.play(re4, 1, 1, 0, 0, 1);
                break;
            case R.id.mi4:
                pool.play(mi4, 1, 1, 0, 0, 1);
                break;
            case R.id.pa4:
                pool.play(pa4, 1, 1, 0, 0, 1);
                break;
            case R.id.sol4:
                pool.play(sol4, 1, 1, 0, 0, 1);
                break;
            case R.id.ra4:
                pool.play(ra4, 1, 1, 0, 0, 1);
                break;
            case R.id.si4:
                pool.play(si4, 1, 1, 0, 0, 1);
                break;
        }
    }
 
    public void blackKeyBoardClicked(View view) {
        switch (view.getId()) {
            //Black KeyBoard Id
            case R.id.doShap1:
                pool.play(doShap1, 1, 1, 0, 0, 1);
                break;
            case R.id.reShap1:
                pool.play(reShap1, 1, 1, 0, 0, 1);
                break;
            case R.id.paShap1:
                pool.play(paShap1, 1, 1, 0, 0, 1);
                break;
            case R.id.solShap1:
                pool.play(solShap1, 1, 1, 0, 0, 1);
                break;
            case R.id.raShap1:
                pool.play(raShap1, 1, 1, 0, 0, 1);
                break;
            ////////////////////////////////////////////////////////////
            case R.id.doShap2:
                pool.play(doShap2, 1, 1, 0, 0, 1);
                break;
            case R.id.reShap2:
                pool.play(reShap2, 1, 1, 0, 0, 1);
                break;
            case R.id.paShap2:
                pool.play(paShap2, 1, 1, 0, 0, 1);
                break;
            case R.id.solShap2:
                pool.play(solShap2, 1, 1, 0, 0, 1);
                break;
            case R.id.raShap2:
                pool.play(raShap2, 1, 1, 0, 0, 1);
                break;
            ////////////////////////////////////////////////////////////
            case R.id.doShap3:
                pool.play(doShap3, 1, 1, 0, 0, 1);
                break;
            case R.id.reShap3:
                pool.play(reShap3, 1, 1, 0, 0, 1);
                break;
            case R.id.paShap3:
                pool.play(paShap3, 1, 1, 0, 0, 1);
                break;
            case R.id.solShap3:
                pool.play(solShap3, 1, 1, 0, 0, 1);
                break;
            case R.id.raShap3:
                pool.play(raShap3, 1, 1, 0, 0, 1);
                break;
            ////////////////////////////////////////////////////////////
            case R.id.doShap4:
                pool.play(doShap4, 1, 1, 0, 0, 1);
                break;
            case R.id.reShap4:
                pool.play(reShap4, 1, 1, 0, 0, 1);
                break;
            case R.id.paShap4:
                pool.play(paShap4, 1, 1, 0, 0, 1);
                break;
            case R.id.solShap4:
                pool.play(solShap4, 1, 1, 0, 0, 1);
                break;
            case R.id.raShap4:
                pool.play(raShap4, 1, 1, 0, 0, 1);
                break;
        }
    }
 
    public void getXmlId() {
        sv = findViewById(R.id.sv);
        doBtn1 = findViewById(R.id.do1);
        reBtn1 = findViewById(R.id.re1);
        miBtn1 = findViewById(R.id.mi1);
        paBtn1 = findViewById(R.id.pa1);
        solBtn1 = findViewById(R.id.sol1);
        raBtn1 = findViewById(R.id.ra1);
        siBtn1 = findViewById(R.id.si1);
        ///
        doBtn2 = findViewById(R.id.do2);
        reBtn2 = findViewById(R.id.re2);
        miBtn2 = findViewById(R.id.mi2);
        paBtn2 = findViewById(R.id.pa2);
        solBtn2 = findViewById(R.id.sol2);
        raBtn2 = findViewById(R.id.ra2);
        siBtn2 = findViewById(R.id.si2);
        ///
        doBtn3 = findViewById(R.id.do3);
        reBtn3 = findViewById(R.id.re3);
        miBtn3 = findViewById(R.id.mi3);
        paBtn3 = findViewById(R.id.pa3);
        solBtn3 = findViewById(R.id.sol3);
        raBtn3 = findViewById(R.id.ra3);
        siBtn3 = findViewById(R.id.si3);
        ///
        doBtn4 = findViewById(R.id.do4);
        reBtn4 = findViewById(R.id.re4);
        miBtn4 = findViewById(R.id.mi4);
        paBtn4 = findViewById(R.id.pa4);
        solBtn4 = findViewById(R.id.sol4);
        raBtn4 = findViewById(R.id.ra4);
        siBtn4 = findViewById(R.id.si4);
    }
 
    public void loadMusic() {
        pool = new SoundPool(4, AudioManager.STREAM_MUSIC, 0);
 
        //WhiteKeyBoard Soundpool
        do1 = pool.load(this, R.raw.do1, 1);
        re1 = pool.load(this, R.raw.re1, 1);
        mi1 = pool.load(this, R.raw.mi1, 1);
        pa1 = pool.load(this, R.raw.pa1, 1);
        sol1 = pool.load(this, R.raw.sol1, 1);
        ra1 = pool.load(this, R.raw.ra1, 1);
        si1 = pool.load(this, R.raw.si1, 1);
        /////////////////
        do2 = pool.load(this, R.raw.do2, 1);
        re2 = pool.load(this, R.raw.re2, 1);
        mi2 = pool.load(this, R.raw.mi2, 1);
        pa2 = pool.load(this, R.raw.pa2, 1);
        sol2 = pool.load(this, R.raw.sol2, 1);
        ra2 = pool.load(this, R.raw.ra2, 1);
        si2 = pool.load(this, R.raw.si2, 1);
        /////////////////
        do3 = pool.load(this, R.raw.do3, 1);
        re3 = pool.load(this, R.raw.re3, 1);
        mi3 = pool.load(this, R.raw.mi3, 1);
        pa3 = pool.load(this, R.raw.pa3, 1);
        sol3 = pool.load(this, R.raw.sol3, 1);
        ra3 = pool.load(this, R.raw.ra3, 1);
        si3 = pool.load(this, R.raw.si3, 1);
        /////////////////
        do4 = pool.load(this, R.raw.do4, 1);
        re4 = pool.load(this, R.raw.re4, 1);
        mi4 = pool.load(this, R.raw.mi4, 1);
        pa4 = pool.load(this, R.raw.pa4, 1);
        sol4 = pool.load(this, R.raw.sol4, 1);
        ra4 = pool.load(this, R.raw.ra4, 1);
        si4 = pool.load(this, R.raw.si4, 1);
 
 
        //BlackKeyBoard Soundpool
        doShap1 = pool.load(this, R.raw.doshap1, 1);
        reShap1 = pool.load(this, R.raw.reshap1, 1);
        paShap1 = pool.load(this, R.raw.pashap1, 1);
        solShap1 = pool.load(this, R.raw.solshap1, 1);
        raShap1 = pool.load(this, R.raw.rashap1, 1);
        /////////////////
        doShap2 = pool.load(this, R.raw.doshap2, 1);
        reShap2 = pool.load(this, R.raw.reshap2, 1);
        paShap2 = pool.load(this, R.raw.pashap2, 1);
        solShap2 = pool.load(this, R.raw.solshap2, 1);
        raShap2 = pool.load(this, R.raw.rashap2, 1);
        /////////////////
        doShap3 = pool.load(this, R.raw.doshap3, 1);
        reShap3 = pool.load(this, R.raw.reshap3, 1);
        paShap3 = pool.load(this, R.raw.pashap3, 1);
        solShap3 = pool.load(this, R.raw.solshap3, 1);
        raShap3 = pool.load(this, R.raw.rashap3, 1);
        /////////////////
        doShap4 = pool.load(this, R.raw.doshap4, 1);
        reShap4 = pool.load(this, R.raw.reshap4, 1);
        paShap4 = pool.load(this, R.raw.pashap4, 1);
        solShap4 = pool.load(this, R.raw.solshap4, 1);
        raShap4 = pool.load(this, R.raw.rashap4, 1);
 
    }
}

마지막으로 구현한 피아노로 연주하는 동영상..ㅎ