10_播放音效

copy 音效文件 explosion.ogg 和 coin.ogg 到  assets 目录下

import java.io.IOException;

import android.media.AudioManager;
import android.media.SoundPool;
import android.os.Bundle;
import android.app.Activity;
import android.content.res.AssetFileDescriptor;
import android.content.res.AssetManager;
import android.view.Menu;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.widget.TextView;

public class MainActivity extends Activity implements OnTouchListener {
 SoundPool soundPool;
    int explosionId = -1;
    int explosionId1 = -1;
   
    int playFlag = 0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        TextView textView = new TextView(this);
        textView.setOnTouchListener(this);
        setContentView(textView);

       
        setVolumeControlStream(AudioManager.STREAM_MUSIC);
        soundPool = new SoundPool(20, AudioManager.STREAM_MUSIC, 0);

        try {
            AssetManager assetManager = getAssets();
            AssetFileDescriptor descriptor = assetManager
                    .openFd("explosion.ogg");
            explosionId = soundPool.load(descriptor, 1);
           
            AssetFileDescriptor descriptor1 = assetManager
                    .openFd("coin.ogg");
            explosionId1 = soundPool.load(descriptor1, 1);
           
        } catch (IOException e) {
            textView.setText("Couldn't load sound effect from asset, "
                    + e.getMessage());
        }
    }

    @Override
    public boolean onTouch(View v, MotionEvent event) {
        if (event.getAction() == MotionEvent.ACTION_UP) {
            if (explosionId != -1) {
             playFlag++;
             if(playFlag %2 ==0)
             {
                soundPool.play(explosionId, 1, 1, 0, 0, 1);
             }
             else
             {
               soundPool.play(explosionId1, 1, 1, 0, 0, 1);
             }
             
            }
        }
        return true;
    }
}