간단한 mp3 플레이어 만들기 , 음악넣기 , 노래재생

package com.example.playapp;

import android.app.Activity;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class MainActivity extends Activity {
MediaPlayer mp;
 
 int playstopBtns[] = {R.id.startme, R.id.stopme, R.id.startbackwalk, R.id.stopbackwalk, R.id.startcry, R.id.stopcry,
   R.id.startcure, R.id.stopcure, R.id.startluv, R.id.stopluv, R.id.startrelove, R.id.stoprelove};
 
 int resMp3[] = {R.raw.me, R.raw.backwalking, R.raw.womancry, R.raw.recovery, R.raw.music, R.raw.relove};
 
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);

  for (int btns : playstopBtns) {
   Button btn = (Button) findViewById(btns);
   btn.setOnClickListener(clickListener);
  }
   
 }
 
 View.OnClickListener clickListener = new View.OnClickListener() {

     public void onClick(View v) {

         switch (v.getId()) {

             case R.id.startme:
              Play(0); break;
             case R.id.startbackwalk:
              Play(1); break;
             case R.id.startcry:
              Play(2); break;
             case R.id.startcure:
              Play(3); break;
             case R.id.startluv:
              Play(4); break;
             case R.id.startrelove:
              Play(5); break;
             default :
              Stop();         
          }

     }

  };

 
 private void Play(int selNo){
  
  Stop();
  
  mp = MediaPlayer.create(MainActivity.this, resMp3[selNo]);
  mp.start();
 }
 
 private void Stop(){
  
  if(mp!=null){
   mp.stop();
   mp = null;
  }
  
 }

 @Override
 public void onDestroy() {
  super.onDestroy();
  Stop();
 }
 
  
 
} 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="${relativePackage}.${activityClass}" >


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="2"
        android:background="#333333"
        android:paddingBottom="5dp"
        android:paddingTop="5dp" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent" >

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:src="@drawable/me" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:src="@drawable/restore" />
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="0.8"
        android:background="#333333" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent" >

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <Button
                    android:id="@+id/startme"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="PLAY" />

                <Button
                    android:id="@+id/stopme"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="STOP" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <Button
                    android:id="@+id/startcure"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="PLAY" />

                <Button
                    android:id="@+id/stopcure"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="STOP" />
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="2"
        android:background="#333333"
        android:paddingBottom="5dp"
        android:paddingTop="5dp" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent" >

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:src="@drawable/cry" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:src="@drawable/relove" />
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="0.8"
        android:background="#333333" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent" >

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <Button
                    android:id="@+id/startcry"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="PLAY" />

                <Button
                    android:id="@+id/stopcry"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="STOP" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <Button
                    android:id="@+id/startrelove"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="PLAY" />

                <Button
                    android:id="@+id/stoprelove"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="STOP" />
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="2"
        android:background="#333333"
        android:paddingBottom="5dp"
        android:paddingTop="5dp" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent" >

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:src="@drawable/twobic" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="match_parent"
                    android:src="@drawable/img" />
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="0.8"
        android:background="#333333" >

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent" >

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <Button
                    android:id="@+id/startbackwalk"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="PLAY" />

                <Button
                    android:id="@+id/stopbackwalk"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="STOP" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1" >

                <Button
                    android:id="@+id/startluv"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="PLAY" />

                <Button
                    android:id="@+id/stopluv"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_margin="5dp"
                    android:layout_weight="1"
                    android:text="STOP" />
            </LinearLayout>
        </LinearLayout>
    </LinearLayout>

</LinearLayout>