DailyReminder

public class DailyReminder extends BroadcastReceiver {

    private static final int NOTIFICATION_ID = 101;

    public static final String NOTIFICATION_CHANNEL_ID = "10001";


    @Override
    public void onReceive(Context context, Intent intent) {
        String appName = context.getString(R.string.app_name);
        String message = context.getString(R.string.msg_daily_reminder);
        showAlarmNotif(context, appName, message, NOTIFICATION_ID);


    }

    public DailyReminder(){

    }

    private void showAlarmNotif(Context context, String title, String message, int notifId){
        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);

        Intent intent = new Intent(context, MainActivity.class);
        PendingIntent pendingIntent = PendingIntent.getActivity(context, notifId, intent, PendingIntent.FLAG_UPDATE_CURRENT);

        Uri alarmRingtone = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context)
                .setSmallIcon(R.drawable.ic_alarm_black_24dp)
                .setContentTitle(title)
                .setContentText(message)
                .setContentIntent(pendingIntent)
                .setPriority(NotificationCompat.PRIORITY_HIGH)
                .setAutoCancel(true)
                .setColor(ContextCompat.getColor(context, android.R.color.transparent))
                .setVibrate(new long[]{1000, 1000, 1000, 1000, 1000})
                .setSound(alarmRingtone);


        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O) {
            int importance = NotificationManager.IMPORTANCE_HIGH;
            NotificationChannel notificationChannel = new NotificationChannel(NOTIFICATION_CHANNEL_ID, "NOTIFICATION_CHANNEL_NAME", importance);
            notificationChannel.enableLights(true);
            notificationChannel.setLightColor(Color.RED);
            notificationChannel.enableVibration(true);
            notificationChannel.setVibrationPattern(new long[]{100, 200, 300, 400, 500, 400, 300, 200, 400});

            builder.setChannelId(NOTIFICATION_CHANNEL_ID);
            notificationManager.createNotificationChannel(notificationChannel);
        }

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

    private void setRepeatingAlrm(Context context){
        cancelAlarm(context);
        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.HOUR_OF_DAY, 7);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.SECOND, 0);

        int SDK_INT = Build.VERSION.SDK_INT;
        if (SDK_INT < Build.VERSION_CODES.KITKAT) {
            alarmManager.set(AlarmManager.RTC_WAKEUP,
                    calendar.getTimeInMillis(), getPendingIntent(context));
        } else if (SDK_INT > Build.VERSION_CODES.KITKAT && SDK_INT < Build.VERSION_CODES.M) {
            alarmManager.setInexactRepeating(
                    AlarmManager.RTC_WAKEUP,
                    calendar.getTimeInMillis(),
                    AlarmManager.INTERVAL_DAY,
                    getPendingIntent(context)
            );
        } else if (SDK_INT >= Build.VERSION_CODES.M) {
            alarmManager.setExactAndAllowWhileIdle(AlarmManager.RTC_WAKEUP,
                    calendar.getTimeInMillis(), getPendingIntent(context));
        }

    }

    public void cancelAlarm(Context context) {

        AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);

        alarmManager.cancel(getPendingIntent(context));
//        notificationManager.cancelAll();
    }

    private static PendingIntent getPendingIntent(Context context) {
        Intent alarmIntent = new Intent(context, DailyReminder.class);

        boolean isAlarmOn = (PendingIntent.getBroadcast(context, NOTIFICATION_ID, alarmIntent, PendingIntent.FLAG_NO_CREATE) != null);

        Log.e("isAlarmOn : ", String.valueOf(isAlarmOn));

        return PendingIntent.getBroadcast(context, NOTIFICATION_ID, alarmIntent,
                PendingIntent.FLAG_CANCEL_CURRENT);
    }

}