Question

我已经实现了soundpool在app启动时播放短音，但由于一些奇怪的原因，它在我打开我的应用程序后停止播放声音，如第24或第25次。与mediaplayer相同的结果。但是当它在第25次发布后停止并且我从我最近的应用程序清除它，它再次开始工作，所以我决定从最近的应用程序列表中排除我的应用程序，但仍然是同样的问题。任何线索？

    public class MainActivity extends Activity {

    Handler mHandler; // global instance
    Runnable your_runnable; // global instance
    private SoundPool soundPool;
    private int soundID;
    boolean loaded = false;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);//Keep screen Always ON    
        //final MediaPlayer mp1 = MediaPlayer.create(getBaseContext(), R.raw.a); // -<play mp3

        //mp1.start();
        mHandler = new Handler();
        //your_runnable = new Runnable() {

            //@Override
            //public void run() {
                //Intent startActivity = new Intent(MainActivity.this,
                //      Activity_2.class); // -<start this activity after 3sec
            //  startActivity(startActivity);
                //overridePendingTransition(R.anim.fadeout, R.anim.fix);//play animation
            //  finish();
            //}

        //};

        mHandler.postDelayed(your_runnable, 3000L);//3sec timer

        // Set the hardware buttons to control the music
                this.setVolumeControlStream(AudioManager.STREAM_MUSIC);
                // Load the sound
                soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 0);
                soundPool.setOnLoadCompleteListener(new OnLoadCompleteListener() {
                    @Override
                    public void onLoadComplete(SoundPool soundPool, int sampleId,
                            int status) {
                        loaded = true;
            }
                });
                soundID = soundPool.load(this, R.raw.a, 1);

            }

    public void onWindowFocusChanged(boolean paramBoolean){//OnCreate Alternate 
        if (paramBoolean){

            final Handler handler = new Handler();
            handler.postDelayed(new Runnable() {
              @Override
              public void run() {

                    // Getting the user sound settings
                    AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
                    float actualVolume = (float) audioManager
                            .getStreamVolume(AudioManager.STREAM_MUSIC);
                    float maxVolume = (float) audioManager
                            .getStreamMaxVolume(AudioManager.STREAM_MUSIC);
                    float volume = actualVolume / maxVolume;
                    // Is the sound loaded already?
                    //if (loaded) {
                        soundPool.play(soundID, volume, volume, 1, 0, 1f);
                        Log.e("Test", "Played sound");
                    }}

          //}  
        ,500);} // 5 minutes delay before execute run()


    }

    //public void back(View view) {
        //mHandler.removeCallbacks(your_runnable);//finishes timer activity before launching new activity
        //Intent intent = new Intent(this, Mod_1_1AtoZ.class);
        //startActivity(intent);
        //overridePendingTransition(R.anim.slide_left_to_right_1,
        //      R.anim.slide_left_to_right_2);
        //finish();
    //}

    //@Override
    //public void onBackPressed() {
        // TODO Auto-generated method stub
    //}

}

Answer 1

只需在onLoadComplete中播放声音播放代码即可。

public void onLoadComplete(SoundPool soundPool, int sampleId, int status) {
    loaded = true;
    soundPool.play(soundID, volume, volume, 1, 0, 1f);
}

代码将在SoundPool完成加载声音时执行，因此您不需要实施任何自定义延迟。

SoundPool在第25次活动开始后没有播放

1 个答案: