android - 如何在Android上播放音频

Question

我开发了Android游戏应用。当用户玩游戏时，我想在背景上播放音乐，并且用户可以在“禁用音乐”上禁用该音乐复选框。
您能给我任何想法吗，我该如何在游戏 Activity 中做到这一点。

问候

Answer 1

这种技术是使用和播放背景声音。

private SoundBroadCastReceiver soundBroadCast;
private void registerBroadCast() {
    soundBroadCast = new SoundBroadCastReceiver();
    IntentFilter intentfilter = new IntentFilter();
    intentfilter.addAction("android.intent.action.USER_PRESENT");
    registerReceiver(soundBroadCast, intentfilter);
}

    private class SoundBroadCastReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        startMusic();
    }
}

 MediaPlayer mediaPlayer = new MediaPlayer();  
private void startMusic() {
    if (mediaPlayer != null) {
        mediaPlayer = null;
    }
    mediaPlayer = MediaPlayer.create(this, R.raw.main_screen);
    mediaPlayer.setLooping(true);
    if (!mediaPlayer.isPlaying()) {

            mediaPlayer.start();


    }
}

private void stopMusic() {
    if (mediaPlayer != null && mediaPlayer.isPlaying()) {
        mediaPlayer.stop();
        mediaPlayer.release();
        mediaPlayer = null;
    }
}







@Override
protected void onResume() {

    if (!((KeyguardManager) getSystemService("keyguard"))
            .inKeyguardRestrictedInputMode()) {
        startMusic();
    }

    registerBroadCast();
    super.onResume();

}

@Override
protected void onPause() {
    unregisterReceiver(soundBroadCast);
    stopMusic();
    System.gc();
    super.onPause();


}