Android：自定义通知声音无法播放

Question

I've tried pretty much all available answers on the site, but somehow I cannot get the notification sound to work. The current code I'm testing is this (the notification is built in an alarm reciever):

public class AlarmReceiver extends BroadcastReceiver {

private static final int NOTIFICATION_ID = 0;

@Override
public void onReceive(Context context, Intent intent) {


  NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
            .setContentTitle(context.getString(R.string.app_name))
            .setContentIntent(PendingIntent.getActivity(context, 0, new Intent(context, MainActivity_.class), 0))
            .setContentText("temporary text")
            .setAutoCancel(true)
            .setSound(Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE
                    + "://" + context.getPackageName() + "/raw/alert"))
            .setDefaults(Notification.DEFAULT_LIGHTS | Notification.DEFAULT_VIBRATE)
            .setPriority(NotificationCompat.PRIORITY_DEFAULT)
            .setWhen(System.currentTimeMillis())
            .setSmallIcon(R.drawable.ic_stat_notification);

    Notification notification = builder.build();
    NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    notificationManager.notify(NOTIFICATION_ID, notification);

The sound however, can be played via MediaPlayer, so the format is not the issue here. Could it have to do with the lenght of the sound (30 seconds)? Thank you for your help!

Answer 1

Try changing your .setSound() to this

.setSound(Uri.parse("android.resource://"
                            + context.getPackageName() + "/"
                            + R.raw.alert))

Hope this will work

Answer 2

READ HERE if the correct answer from Mukesh doesn't work for you!!

The answer published from Mukesh is correct, but for me it wasn't working until I discovered I configured the notification wrong!! (or there is an android BUG)

This snippet doesn't work

    NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder( context )
     .setDefaults( DEFAULT_VIBRATE | FLAG_SHOW_LIGHTS )
     .setContentTitle( title )
     .setContentText( message )

     .setSound( "android.resource://"
                        + context.getPackageName() + "/"
                        + R.raw.alert)).build();

-

This snippet WORKS

NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder( context )
     .setContentTitle( title )
     .setContentText( message )
     .setSound( "android.resource://"
                        + context.getPackageName() + "/"
                        + R.raw.alert)).build();

-

.setDefaults( DEFAULT_VIBRATE | FLAG_SHOW_LIGHTS )

Observation: Like you see the line above I doesn't use the constanst DEFAULT_SOUND, but still does't work.