Android Audio사용 (음악 재생)

음악파일 위치

res -> raw ->   main.xml

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

    <Button
        android:id="@+id/startPlayerBtn"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="오디오 재생 시작" />

    <Button
        android:id="@+id/restartPlayerBtn"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="재생 재개" />

    <Button
        android:id="@+id/pausePlayerBtn"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="재생 일시중지" />

</LinearLayout>

main.xml

package com.proandroid;

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


public class SimpleAudio extends Activity {
	static final String AUDIO_PATH = "http://211.183.2.90/web/upload/the_boys.mp3";
	
	private MediaPlayer mediaPlayer;
	private int playbackPosition=0;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        Button startPlayerBtn = (Button)findViewById(R.id.startPlayerBtn);
        Button pausePlayerBtn = (Button)findViewById(R.id.pausePlayerBtn);
        Button restartPlayerBtn = (Button)findViewById(R.id.restartPlayerBtn);
        
        startPlayerBtn.setOnClickListener(new OnClickListener(){
        	
        	public void onClick(View view){
        		try{
        			playLocalAudio();
        			//playAudio(AUDIO_PATH);
        			//playSdcardAudio();
        			//playLocalAudio_UsingDescriptor();
        		}catch(Exception e){
        			e.printStackTrace();
        		}
        	}
        });
       
        pausePlayerBtn.setOnClickListener(new OnClickListener(){
        	public void onClick(View view){
        		if(mediaPlayer!=null){
        			//음악을 일시 정지 시킬때 정지되기 직전의 position값 저장
        			playbackPosition = mediaPlayer.getCurrentPosition();
        			//일시정지
        			mediaPlayer.pause();
        		}
        	}
        });
        
        restartPlayerBtn.setOnClickListener(new OnClickListener(){
        	public void onClick(View view){
        		//MediaPlayer 객체가 존재하고 현재 실행중이 아닐때
        		if(mediaPlayer!=null && !mediaPlayer.isPlaying()){
        			//음악이 일시정지되기 직전의 position값으로 셋팅
        			mediaPlayer.seekTo(playbackPosition);
        			mediaPlayer.start();
        		}
        	}
        });
    } 
    
    private void playLocalAudio()throws Exception{
    	//어플리케이션에 내장되 있는 자원을 호출해서 MediaPlayer객체 생성
    	mediaPlayer=MediaPlayer.create(this, R.raw.the_boys);
    	//MediaPlayer 객체가 가지고 있는 음악 정보를 start
    	mediaPlayer.start();
    }
    private void  playAudio(String url)throws  Exception{
		killMediaPlayer();

		mediaPlayer = new MediaPlayer();
		mediaPlayer.setDataSource(url);
		mediaPlayer.prepare();
		mediaPlayer.start();
	}	
	private void playSdcardAudio()throws Exception{
		mediaPlayer = new MediaPlayer();
		mediaPlayer.setDataSource("/sdcard/twoneone.mp3");
		mediaPlayer.prepare();
		mediaPlayer.start();
	}
	private void playLocalAudio_UsingDescriptor() throws Exception {

		AssetFileDescriptor fileDesc = 
				getResources().openRawResourceFd(R.raw.twoneone);
		if(fileDesc!=null){
			mediaPlayer=new MediaPlayer();
			mediaPlayer.setDataSource(
					fileDesc.getFileDescriptor(), 
					fileDesc.getStartOffset(),
					fileDesc.getLength());
			mediaPlayer.prepare();
			mediaPlayer.start();
			fileDesc.close();
		}
	}
    
    @Override
    protected void onDestroy(){
    	super.onDestroy();
    	killMediaPlayer();
    }

	private void killMediaPlayer() {
		if(mediaPlayer!=null){
			try{
				//MediaPlayer 자원해제
				mediaPlayer.release();
			}catch(Exception e){
				e.printStackTrace();
			}
		}
		
	}
}