From 0e58358287daaada53e610b5e512b0a6de9771bd Mon Sep 17 00:00:00 2001
From: tibbi <tibor@kaputa.sk>
Date: Tue, 8 Jan 2019 15:56:48 +0100
Subject: [PATCH] delete notification channels only on Android Oreo

---
 .../simplemobiletools/calendar/pro/extensions/Context.kt    | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/extensions/Context.kt b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/extensions/Context.kt
index 86ec964cc..2b58fe3db 100644
--- a/app/src/main/kotlin/com/simplemobiletools/calendar/pro/extensions/Context.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/calendar/pro/extensions/Context.kt
@@ -214,8 +214,10 @@ fun Context.getNotification(pendingIntent: PendingIntent, event: Event, content:
     // create a new channel for every new sound uri as the new Android Oreo notification system is fundamentally broken
     if (soundUri != config.lastSoundUri || config.lastVibrateOnReminder != config.vibrateOnReminder) {
         if (!publicVersion) {
-            val oldChannelId = "simple_calendar_${config.lastReminderChannel}_${config.reminderAudioStream}"
-            notificationManager.deleteNotificationChannel(oldChannelId)
+            if (isOreoPlus()) {
+                val oldChannelId = "simple_calendar_${config.lastReminderChannel}_${config.reminderAudioStream}"
+                notificationManager.deleteNotificationChannel(oldChannelId)
+            }
         }
 
         config.lastVibrateOnReminder = config.vibrateOnReminder