Notification "setSound()" in Android 8 - notifications

Question

Here's the question, the code of notification can't work with Android 8.
I can't set the notification sound myself. The only result it shows is the system sound "Bee".
Here's my code:
if(Build.VERSION.SDK_INT>=26) {
NotificationManager manager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
String id = "channel_1";
String description = "123";
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel mChannel = new NotificationChannel(id, "123", importance);
mChannel.enableLights(true);
mChannel.enableVibration(true);
mChannel.setLightColor(Color.GREEN);
mChannel.setLockscreenVisibility(Notification.VISIBILITY_PUBLIC);
AudioAttributes aa = new AudioAttributes.Builder()
.setUsage(AudioAttributes.USAGE_NOTIFICATION)
.setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
.build();
mChannel.setSound(Uri.parse("android.resource://com.example.lenovo.projectmonitor/" + R.raw.video11),aa);
manager.createNotificationChannel(mChannel);
Notification notification = new NotificationCompat.Builder(NotificationService.this, "channel_1")
.setContentTitle("new alarm")
.setContentText(nameAll.get(0))
.setWhen(System.currentTimeMillis())
.setSmallIcon(R.mipmap.ic_launcher)
.setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))
.setContentIntent(pi)
.setAutoCancel(true)
.build();
manager.notify(1, notification);
}

Answer 1

use setSound method in both NotificationChannel and NotificationCompat.Builder class. example
private void createNotificationChannel() {
// Create the NotificationChannel, but only on API 26+ because
// the NotificationChannel class is new and not in the support library
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
CharSequence name = context.getString(R.string.channel_name);
String description = context.getString(R.string.channel_description);
int importance = NotificationManager.IMPORTANCE_HIGH;
NotificationChannel channel = new NotificationChannel(channelId, name, importance);
channel.setDescription(description);
channel.setSound(null, null);
// Register the channel with the system; you can't change the importance
// or other notification behaviors after this
NotificationManager notificationManager = context.getSystemService(NotificationManager.class);
notificationManager.createNotificationChannel(channel);
}
}
and creating buileder:
public void buildNotification(Class className, int smallIconId) {
createNotificationChannel();
// Create an Intent for the activity you want to start
Intent intent = new Intent(context, className);
intent.setAction(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
// Create the TaskStackBuilder and add the intent, which inflates the back stack
// TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
// stackBuilder.addNextIntentWithParentStack(intent);
//// Get the PendingIntent containing the entire back stack
// PendingIntent pendingIntent =
// stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder
.setSmallIcon(smallIconId)
.setContentTitle("Recording Audio..")
// .setContentText("Much longer text that cannot fit one line...")
// .setStyle(new NotificationCompat.BigTextStyle()
// .bigText("Much longer text that cannot fit one line..."))
.setPriority(NotificationCompat.PRIORITY_HIGH)
.setSound(null)
.setContentIntent(pendingIntent)
.setAutoCancel(true);
// notificationId is a unique int for each notification that you must define
// notificationManager.notify(notificationId, mBuilder.build());
// mBuilder.setContentTitle("changed it");
// notificationManager.notify(notificationId, mBuilder.build());
// mHandler.postDelayed(new Runnable() {
// #Override
// public void run() {
// }
// }, 3000);
}