Android多媒体应用使用SoundPool播放音频

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 soundmap=new HashMap();//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; 
  } 
}