Notification coloured action button Android 10

Question

I'm trying to color the buttons(Action) in Notification like this.

So far this is what i'm achieved so far.

Below is the code i'm using

NotificationService.class

private void showCallNotification(Map<String, String> dataMap) {
        notificationId = (int) (System.currentTimeMillis() % 10000);
        Intent intent = new Intent(getApplicationContext(), ReceiveCallActivity.class)
                .addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
                .setAction(Intent.ACTION_ANSWER)
                .putExtra(AppConstants.CALL_STATUS, AppConstants.CALL_ACCEPTED)
                .putExtra("title", dataMap.get("title"))
                .putExtra("action", dataMap.get("action"));

        Intent cancelIntent = new Intent(getApplicationContext(), VideoCallReceiver.class)
                .setAction(AppConstants.INCOMING_CALL_BROADCAST_ACTION)
                .putExtra(AppConstants.CALL_STATUS, AppConstants.CALL_DECLINED)
                .putExtra("notificationId", notificationId);

        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
        PendingIntent cancelPendingIntent = PendingIntent.getBroadcast(this, 0, cancelIntent, PendingIntent.FLAG_UPDATE_CURRENT);

        NotificationCompat.Action declineAction = new NotificationCompat.Action(android.R.drawable.ic_menu_call, getString(R.string.decline_call), cancelPendingIntent);
        NotificationCompat.Action acceptAction = new NotificationCompat.Action(android.R.drawable.ic_menu_call, getString(R.string.accept_call), pendingIntent);

        NotificationCompat.Builder builder = new NotificationCompat.Builder(this, AppConstants.CALL_CHANNEL_ID)
                .setSmallIcon(R.drawable.ic_notification)
                .setContentTitle(dataMap.get("sender"))
                .setContentText(getString(R.string.incoming_call))
                .setColor(getResources().getColor(R.color.notification_color))
                .setAutoCancel(true)
                .setTimeoutAfter(CALL_DISMISS_TIME)
                .addAction(declineAction)
                .addAction(acceptAction)
                .setPriority(NotificationCompat.PRIORITY_MAX)
                .setFullScreenIntent(pendingIntent, true);

        NotificationManagerCompat notificationManager = NotificationManagerCompat.from(this);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            createCallNotificationChannel();
        }

        notificationManager.notify(notificationId, builder.build());
    }

I'm out of ideas now. Any help will be appreciated.

Answer 1

Code taken from the Android official Dialer app

when you set the action string getString(R.string.decline_call) change that with a call to the method

  private Spannable getActionText(@StringRes int stringRes, @ColorRes int colorRes) {
    Spannable spannable = new SpannableString(context.getText(stringRes));
    if (VERSION.SDK_INT >= VERSION_CODES.N_MR1) {
      spannable.setSpan(
          new ForegroundColorSpan(context.getColor(colorRes)), 0, spannable.length(), 0);
    }
    return spannable;
  }

Answer 2

I have managed to apply colors for the notification action buttons. Use spannable just like Aeron suggested (code from the Dialer app) and the very important thing is to set USE_FULL_SCREEN_INTENT permission. Otherwise colors are ignored in the dark mode or look incorrect in the non dark mode.