Exact schedule not working

[HidemitsuHashimoto]

Describe the bug
I use my app to register alarm to exact weekday and time.
I use this permission:

<uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" android:maxSdkVersion="32" />

But when i use exactAllowWhileIdle i got this error:

await localNotificationsPlugin.zonedSchedule(
  time.id,
  boss.name,
  'Alarme do boss ${boss.name} - ${time.hour}:${formatterNumber(time.minute)}',
  _nextInstanceOfWeek(
      hour: time.hour, minute: time.minute, weekday: time.weekday),
  NotificationDetails(android: androidDetails),
  androidScheduleMode: AndroidScheduleMode.exactAllowWhileIdle,
  uiLocalNotificationDateInterpretation:
      UILocalNotificationDateInterpretation.absoluteTime,
  matchDateTimeComponents: DateTimeComponents.dayOfWeekAndTime,
);

Error:
PlatformException (PlatformException(exact_alarms_not_permitted, Exact alarms are not permitted, null, null))

When i use inexactAllowWhileIdle the alarm just not working.

[Levi-Lesches]

You'll need to do some runtime checks and requests:

• you must request permissions from the user the first time you try to schedule exact alarms
• even so, the user can revoke permissions at any time, so always check if you don't want the error

// Returns the Android version of the plugin on Android devices, null everywhere else
final androidPlugin = localNotificationsPlugin.resolvePlatformSpecificImplementation<AndroidFlutterLocalNotificationsPlugin>();

// Check if you still have permission from last time you asked (or false if you never asked)
// Null means you're not on Android
var hasPermission = await androidPlugin?.canScheduleExactNotifications() ?? false;
if (!hasPermisssion) {
  // Request permissions again and update the variable
  hasPermission = await androidPlugin?.requestExactAlarmsPermission();
}

// You may have been denied permissions, so check the return value
if (hasPermission ?? false) {
  await localNotificationsPlugin.zonedSchedule(...);
}

See also: this section of the new Android setup guide. If this works for you, please let us know by closing the issue.

[HidemitsuHashimoto]

Did work.

Thank you very much.