仅播放默认通知声音（Android）

Question

如何只播放通知声音（而不触发状态栏通知）？我想要默认的通知声音，并且将其完全作为通知声音播放。是否可以使用MediaPlayer实现？

- Rafael

---

如果你能找到音频文件，你可以使用一个媒体播放器来完成。你应该能够在Android源代码中找到默认的音频文件。查看Notification类和这个问题链接：https://dev59.com/xm855IYBdhLWcg3wQyDh - keyser

Answer 1

Uri defaultRingtoneUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);

MediaPlayer mediaPlayer = new MediaPlayer();

try {
      mediaPlayer.setDataSource(context, defaultRingtoneUri);
      mediaPlayer.setAudioStreamType(AudioManager.STREAM_NOTIFICATION);
      mediaPlayer.prepare();
      mediaPlayer.setOnCompletionListener(new OnCompletionListener() {

         @Override
         public void onCompletion(MediaPlayer mp)
         {
            mp.release();
         }
      });
  mediaPlayer.start();
} catch (IllegalArgumentException e) {
 e.printStackTrace();
} catch (SecurityException e) {
 e.printStackTrace();
} catch (IllegalStateException e) {
 e.printStackTrace();
} catch (IOException e) {
 e.printStackTrace();
}

- dymmeh

Answer 2

Uri notification = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
Ringtone r = RingtoneManager.getRingtone(context.getApplicationContext(), notification);
r.play();

- 18446744073709551615

Answer 3

你可以试试这个

private void sendNotification(String title, String messageBody,String tag) {

    Intent intent;
    intent = new Intent(this, MainActivity.class);
    intent.setAction(tag);
    intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
            PendingIntent.FLAG_ONE_SHOT);
    String channel_id=this.getResources().getString(R.string.app_name);
    Uri defaultSoundUri= RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
            .setSmallIcon(R.mipmap.ic_launcher)
            .setContentTitle(title)
            .setContentText(messageBody)
            .setStyle(new NotificationCompat.BigTextStyle()
                    .bigText(messageBody))
            .setAutoCancel(true)
            .setSound(defaultSoundUri)
            .setChannelId(channel_id)
            .setContentIntent(pendingIntent);

    NotificationManager notificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    NotificationChannel mChannel = null;
    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
        mChannel = new NotificationChannel(channel_id, channel_id, NotificationManager.IMPORTANCE_DEFAULT);
        notificationManager.createNotificationChannel(mChannel);
    }
    notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
}
} 

- arya