音效和背景音乐

音效

res文件夹下创建raw，将要播放的音效文件放入
通过Map来匹配这些音效

代码如下：

public class SoundPlayerManager {

    private SoundPool mSoundPlayer;
    private Map<Integer,Integer> mSoundMap;
    private Context mContext;
    public static SoundPlayerManager mInstance;
    private SoundPlayerManager(Context context)
    {
        mContext = context;
    }
    public static SoundPlayerManager getInstance(Context context) {
        if (mInstance == null) {
            synchronized (SoundPlayerManager.class) {
                if (mInstance == null)
                    mInstance = new SoundPlayerManager(context);
            }
        }
        return mInstance;
    }

    /**
     * 初始化
     *
     */
    public void init() {
        mSoundMap = new HashMap<Integer, Integer>();
        mSoundPlayer = new SoundPool(10, AudioManager.STREAM_MUSIC, 5);
        mSoundMap.put(Constant.SOUND_WINDOW, mSoundPlayer.load(mContext,R.raw.window_openandclose,1));
        mSoundMap.put(Constant.SOUND_CLICK, mSoundPlayer.load(mContext,R.raw.button_click,1));
        mSoundMap.put(Constant.SOUND_SIGN, mSoundPlayer.load(mContext,R.raw.sign,1));
        mSoundMap.put(Constant.SOUND_GAIN, mSoundPlayer.load(mContext,R.raw.treasure_gain,1));
        mSoundMap.put(Constant.SOUND_GAME_START, mSoundPlayer.load(mContext,R.raw.game_start,1));
    }

    /**
     * 播放声音
     *
     * @param soundKey
     */
    public void play(int soundKey) {

        AudioManager am = (AudioManager)mContext.getSystemService(Context.AUDIO_SERVICE);
        //最大音量
        float audioMaxVolumn = am.getStreamMaxVolume(AudioManager.STREAM_SYSTEM);
        //当前音量
        float audioCurrentVolumn = am.getStreamVolume(AudioManager.STREAM_SYSTEM);
        float volumnRatio = audioCurrentVolumn/audioMaxVolumn;

        /**
         * @param soundID a soundID returned by the load() function
         * @param leftVolume left volume value (range = 0.0 to 1.0)
         * @param rightVolume right volume value (range = 0.0 to 1.0)
         * @param priority stream priority (0 = lowest priority)
         * @param loop loop mode (0 = no loop, -1 = loop forever)
         * @param rate playback rate (1.0 = normal playback, range 0.5 to 2.0)
         */
        mSoundPlayer.play(mSoundMap.get(soundKey), volumnRatio, volumnRatio, 1, 0, 1);
    }
}

在合适的地方初始化，如application里面，

//初始化soundplay
SoundPlayerManager.getInstance(GwApplication.getGwApplication()).init();

调用的时候 SoundPlayerManager.getInstance(GwApplication.getGwApplication()).play(Constant.SOUND_CLICK);

背景音乐

音乐播放器有很多功能，播放背景音乐只需要简单的功能就可以

public class MediaPlayerManager {

    private MediaPlayer mMediaPlayer;
    private Context mContext;
    private int mRawRes;
    public static MediaPlayerManager mInstance;

    private MediaPlayerManager(Context context)
    {
        mContext = context;
    }

    public static MediaPlayerManager getInstance(Context context)
    {
        if (mInstance == null) {
            synchronized (SoundPlayerManager.class) {
                if (mInstance == null)
                    mInstance = new MediaPlayerManager(context);
            }
        }
        return mInstance;
    }

    public void start(int rawRes)
    {
        if (mMediaPlayer != null)
        {
            if(rawRes == mRawRes)
            {
                return;
            }
            mMediaPlayer.reset();
        }
        mMediaPlayer = MediaPlayer.create(mContext,rawRes);
        mMediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp)
            {
                mMediaPlayer.start();
            }
        });
        // 开始播放
        mMediaPlayer.start();
        mRawRes = rawRes;
    }

    public int release()
    {
        if(mMediaPlayer != null)
        {
            mMediaPlayer.stop();
            mMediaPlayer.release();
            mMediaPlayer = null;
        }
        return mRawRes;
    }
}