Android Question intent not fire if screen is locked

[Hannibal]

I'm using intent/receiver to do some stuff at specified time.
Since I would like it work like an alarm clock that still work if screen is locked, I base my code to that https://www.b4x.com/android/forum/threads/receivers-and-services-in-2023.145370/
on old android like pie and oreo it work fine. On newest if screen is locked it do nothing until I unlock it, once unlocked it fire. I degugged with bridge, but I not found any exception..
So after reading on the forum I disabled battery optimization for my app, but I get the same behavior. I have also an intent-receiver to do stuff at boot, and it work fine everytime an all phones I tested.
Am I missing something?

 

[Erel]

Are you using StartReceiverAt ? Are you showing a notification from the receiver? How do you see that it is not working?

 

[Hannibal]

Are you using StartReceiverAt ? Are you showing a notification from the receiver? How do you see that it is not working?

yes, I'm using it. I'm showing a notification. I setted the intent for 9 AM using a function that you posted in another tutorial, at this time I did not get the notification, so I waited until 9.15 and then I unlocked the phone, when I unlocked I get the notification after some seconds.
I done this test for some days and I found that if I not unlock the phone but I wait some hours (like unlocking it at 12.30), it had showed the notification at 10AM ( 1 hour later the time setted).

 

[Erel]

sing a function that you posted in another tutorial,

Better to post it. Things change over time.

StartReceiverAt is inexact by definition. It is up to the OS to decide when to send the intent.

See this: https://www.b4x.com/android/forum/threads/start-receiver-at-exact-time.148185/

 

[Hannibal]

Sub FindNextTime(Times As List) As Long
    Times.Sort(True)
    For Each st As Double In Times
        If SetHours(st) > DateTime.Now Then
            Return SetHours(st)
        End If
    Next
    Return DateTime.Add(SetHours(Times.Get(0)), 0, 0, 1)
End Sub

Sub SetHours(st As Double) As Long
    Dim hours As Int = Floor(st)
    Dim minutes As Int = Round(60 * (st - hours))
    Return DateUtils.SetDateAndTime(DateTime.GetYear(DateTime.Now), _
  DateTime.GetMonth(DateTime.Now), DateTime.GetDayOfMonth(DateTime.Now), hours, minutes, 0)
End Sub

I can't find the tutorial link but this is the code is that.

See this: https://www.b4x.com/android/forum/threads/start-receiver-at-exact-time.148185/

I'll give a try.

 

[Hannibal]

Better to post it. Things change over time.

StartReceiverAt is inexact by definition. It is up to the OS to decide when to send the intent.

See this: https://www.b4x.com/android/forum/threads/start-receiver-at-exact-time.148185/

Tested: Worked fine!
Thanks Erel