Ayush783

fun sendEvent(event: String, body: Map<String, Any>) {
    eventHandlers.reapCollection().forEach { it.get()?.send(event, body) }

    if (event == CallkitConstants.ACTION_CALL_DECLINE) {
        for ((name, channel) in methodChannels) {
            try {
                channel.invokeMethod("CALL_DECLINED_CUSTOM", "")
            } catch (e: Exception) {
                Log.d(EXTRA_CALLKIT_CALL_DATA, e.toString())
            }

Ayush783

class CallingKitService {
  static final CallingKitService _instance = CallingKitService._internal();

  factory CallingKitService() {
    return _instance;
  }

  CallingKitService._internal() {
    MethodChannel('YOUR_CHANNEL_NAME').setMethodCallHandler(
      (call) async {

Ayush783

class CallingKitService {
  static final CallingKitService _instance = CallingKitService._internal();

  factory CallingKitService() {
    return _instance;
  }

  CallingKitService._internal() {
    MethodChannel('YOUR_CHANNEL_NAME').setMethodCallHandler(
      (call) async {

Ayush783

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    channel = MethodChannel(flutterEngine?.dartExecutor?.binaryMessenger!!, "YOUR_CHANNEL_NAME")
    val appOpenedIntent = intent
    if (
        appOpenedIntent != null &&
            appOpenedIntent.action == "com.hiennv.flutter_callkit_incoming.ACTION_CALL_ACCEPT"
    ) {
        val extras = appOpenedIntent.extras
        if (extras != null) {

Ayush783

void showCallNotification(Map payload) {
  var params = CallKitParams(
      id: Uuid().v1(),
      nameCaller: payload['name'],
      appName: 'App Name',
      avatar: payload['imageUrl'],
      handle: '0123456789',
      appLogo: 'assets/images/app_logo.png',
      duration: 45000,
      // This is the data that you will be extracting once app is opened

Ayush783

    List < OneTimeWorkRequest > notificationScheduleList = new ArrayList();

    // create list of OneTimeRequests for re triggering notifications every 5 minutes after
    // a new notification is received
    for (int i = 1; i < 3; i++) {
        notificationScheduleList.add(
            new OneTimeWorkRequest.Builder(PushNotificationSchedulerWork.class) // Specify the worker
            .setInitialDelay(30 * i, TimeUnit.MINUTES) // First one at 30th minute, Next at 60th minute
            .addTag("PushNotificationSchedulerWork") // Specify a work tag
            .build()

Ayush783

class PushNotificationSchedulerWork(context: Context, workerParams: WorkerParameters) : Worker(context, workerParams) {

    val tag = "PushNotificationSchedulerWork"

    @RequiresApi(Build.VERSION_CODES.O)
    override fun doWork(): Result {
        try {
            val context = applicationContext
            val notificationManager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
            val activeNotifications = notificationManager.activeNotifications

Ayush783

    @SuppressLint("NotificationTrampoline")
    void reTriggerNotification(Context context, Bundle extras, StatusBarNotification notification, String channelId, NotificationManager nm) {
        NotificationCompat.Builder nb = new NotificationCompat.Builder(context, channelId);
        Notification n = notification.getNotification();
        // ...
        // Set all attributes you want on your notification.
        // Set unique group IDs if you're disabling Notification bundling
        // Set custom layouts, stale notification etc
        // ...

Ayush783

// METHOD TO SORT
sort() {
        activeNotifications = notificationManager.getActiveNotifications();

        Arrays.sort(activeNotifications, PushNotificationUtil.postTimeComparator);
        while (activeNotifications.size() > 6) { // You can change this to any number. This defines the limit on notifications
            StatusBarNotification notification = activeNotifications.remove(0);
            notificationManager.cancel(notification.getId());
        }
}

Ayush783

createNotification() {
  ...
  notificationBuilder.setGroup(getUniqueGroupKey(10))
  ...
}

fun getUniqueGroupKey(sizeOfRandomString: Int): String {
    val random = Random()
    val sb = StringBuilder(sizeOfRandomString)
    for (i in 0 until sizeOfRandomString)