mattermost-mobile/android/app/src/main/java/com/mattermost/rnbeta/NotificationDismissService.java

package com.mattermost.rnbeta;

import android.content.Context;
import android.content.Intent;
import android.app.IntentService;
import android.os.Bundle;
import android.util.Log;

import com.wix.reactnativenotifications.core.NotificationIntentAdapter;

public class NotificationDismissService extends IntentService {
    private Context mContext;
    public NotificationDismissService() {
            super("notificationDismissService");
    }

    @Override
    protected void onHandleIntent(Intent intent) {
        mContext = getApplicationContext();
        Bundle bundle = NotificationIntentAdapter.extractPendingNotificationDataFromIntent(intent);
        int notificationId = intent.getIntExtra(CustomPushNotification.NOTIFICATION_ID, -1);
        String channelId = bundle.getString("channel_id");
        CustomPushNotification.clearNotification(mContext, notificationId, channelId);
        Log.i("ReactNative", "Dismiss notification");
    }
}