Cancel all expo local scheduled notifications on iOS

Question

I tried scheduling local notifications using expo (react native) and something very strange is happening.

This is the code I wrote:

const localNotification = {
  title: 'test',
  body: 'test body',
  ios: {
    sound: true
  }
};

let t = new Date();
t.setSeconds(t.getSeconds() + 10);

const schedulingOptions = {
  time: t, // (date or number) — A Date object representing when to fire the notification or a number in Unix epoch time. Example: (new Date()).getTime() + 1000 is one second from now.
  repeat: 'minute'
};

Notifications.scheduleLocalNotificationAsync(localNotification, schedulingOptions);

Then I started to receive the same notification every time the app is in background.

I removed that piece of code to use Notifications.presentLocalNotificationAsync() instead and I expected the previous notification to stop appearing as Notifications.scheduleLocalNotificationAsync() is never called anywhere in the whole app.

On Android I rebooted the phone and the notification doesn't appear anymore, but on iOS even after rebooting and reinstalling expo I keep getting the same scheduled notification.

I tried calling Notifications.cancelAllScheduledNotificationsAsync() with no luck.

Answer 1

When your code called scheduleLocalNotificationAsync() it registered a recurring notification with the OS - removing the code isn't enough.

I think Notifications.cancelAllScheduledNotificationsAsync() is what you're looking for:

https://docs.expo.io/versions/latest/sdk/notifications/#notificationscancelallschedulednotificationsasync