Android多媒体应用使用SoundPool播放音频

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 xmlns:tools="http://schemas.android.com/tools" 
 android:id="@+id/ll1" 
 android:layout_width="fill_parent" 
 android:layout_height="fill_parent" 
 android:orientation="horizontal" > 
  <Button 
   android:id="@+id/dog" 
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content" 
   android:text="狗叫"/> 
  <Button 
   android:id="@+id/brid" 
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content" 
   android:text="鸟叫"/> 
  <Button 
   android:id="@+id/notify" 
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content" 
   android:text="闹铃声"/> 
  <Button 
   android:id="@+id/laugh" 
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content" 
   android:text="笑声"/> 
</LinearLayout> 

package com.example.test; 
 
import java.util.HashMap; 
 
 
import android.app.Activity; 
import android.media.AudioManager; 
import android.media.SoundPool; 
import android.os.Bundle; 
import android.view.KeyEvent; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
 
public class MainActivity extends Activity{ 
 private SoundPool soundpool;//声明一个SoundPool对象 
 private HashMap<Integer,Integer> soundmap=new HashMap<Integer,Integer>();//创建一个HashMap对象 
 @Override 
 public void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  setContentView(R.layout.main); 
   
  //创建一个SoundPool对象，该对象可以容纳5个音频流 
  soundpool=new SoundPool(5,AudioManager.STREAM_MUSIC,0); 
   
  //将要播放的音频流保存到HashMap对象中 
  soundmap.put(1,soundpool.load(this, R.raw.dog,1)); 
  soundmap.put(2,soundpool.load(this, R.raw.brid,1)); 
  soundmap.put(3,soundpool.load(this, R.raw.notify,1)); 
  soundmap.put(4,soundpool.load(this, R.raw.laugh,1)); 
  soundmap.put(5,soundpool.load(this, R.raw.ding,1)); 
   
  Button dog=(Button)findViewById(R.id.dog); 
  dog.setOnClickListener(new OnClickListener() { 
    
   @Override 
   public void onClick(View arg0) { 
    soundpool.play(soundmap.get(1), 1,1,0,0,1); 
     
   } 
  }); 
   
  Button brid=(Button)findViewById(R.id.brid); 
  brid.setOnClickListener(new OnClickListener() { 
    
   @Override 
   public void onClick(View arg0) { 
    soundpool.play(soundmap.get(2), 1,1,0,0,1); 
     
   } 
  }); 
   
  Button notify=(Button)findViewById(R.id.notify); 
  notify.setOnClickListener(new OnClickListener() { 
    
   @Override 
   public void onClick(View arg0) { 
    soundpool.play(soundmap.get(3), 1,1,0,0,1); 
     
   } 
  }); 
   
  Button laugh=(Button)findViewById(R.id.laugh); 
  laugh.setOnClickListener(new OnClickListener() { 
    
   @Override 
   public void onClick(View arg0) { 
    soundpool.play(soundmap.get(4), 1,1,0,0,1); 
     
   } 
  }); 
 
 
 } 
 //重写键盘被按下的onKeyDown()方法，用于实现播放按键音的功能 
 @Override 
 public boolean onKeyDown(int keyCode, KeyEvent event) { 
  soundpool.play(soundmap.get(5), 1,1,0,0,1);//播放按键音 
  return true; 
 } 
}