I want to schedule a notification for the user's birthday. Right now I am trying to do that when he registers and he gives his date of birth. When he click "Register" I add the data to the database and also call this function to schedule his birthday using the date data that he provided:
export const scheduleUserBirthday = async(date) => {
var dob = new Date(date)
const birthdayDay = dob.getDay();
const birthdayMonth = dob.getMonth();
const myBirthdayThisYear = new Date(new Date().getFullYear(), birthdayMonth, birthdayDay).setHours(23, 59, 59);
const addToYear = myBirthdayThisYear > Date.now() ? 0 : 1;
const oneDay = 24*60 * 60 * 1000;
const secondDate = new Date(new Date().getFullYear() + addToYear, birthdayMonth, birthdayDay);
const firstDate = new Date();
const days = Math.round(Math.abs((firstDate.getTime() - secondDate.getTime()) / (oneDay)));
await Notifications.scheduleNotificationAsync({
content: {
title: Happy Birthday,
body: 'Have a wonderfull day'
},
trigger: {
day:days
repeats: true,
},
});
}
However this gives me this error:
[Unhandled promise rejection: Error: Failed to schedule the notification. Trigger of type: calendar is not supported on Android.]
I noticed that it only works if hour and minute parameter is given, so I tried to add the next notification in hours but got the same result.
Does the trigger object only accepts this format: hour < 24 and minutes < 60?
I am a little bit lost... (Also would like to set scheduled notifications for 3 months in the future)
By the looks of it, when you try to use this format of trigger it is using Calendar API to schedule a notification.
This feature seems to be only available on iOS as the docs say.
What you could do instead is try to force the use of YearlyTrigger like so:
import * as Notifications from "expo-notifications";
import { Platform } from "react-native";
export const scheduleUserBirthday = async (date) => {
const dob = new Date(date);
const day = dob.getDay();
const month = dob.getMonth();
if (Platform.OS === "android") {
await Notifications.setNotificationChannelAsync("birthday-reminder", {
name: "Birthday reminder",
description: "Remind user about his birthday!",
importance: Notifications.AndroidImportance.HIGH,
sound: "default",
});
}
await Notifications.scheduleNotificationAsync({
content: {
title: "Happy Birthday",
body: "Have a wonderfully day",
sound: "default",
},
trigger: {
channelId: "birthday-reminder",
day: day,
month: month,
hour: 0,
minute: 0,
repeats: true,
},
});
};
This will also help you with creating a recurring notification for each year, so you don't have to worry about that part.
One additional thing I added is setNotificationChannelAsync. I think it's sort of mandatory to supply a notification channel on android.
Although Expo created one default channel for you, creating a specific channel for birthday reminders has its benefits. It would allow the user to toggle on/off that specific notification type from system application settings