Android Question b4a v8 notification led not working

[davemorris]

Hi, everyone

Just updated to B4A v8 - and it appears the notification Led/light has stopped working - I checked by going back to v7.8 and recompiling the same code and installing it on my device - and notification Led/light worked ok. So it does appear to be v8 related.

Anyone else had this problem, or as usual am I doing something wrong?

 

[Erel]

Are you testing it on an Android 8 device?

 

[davemorris]

Hi Erel

No I have only tried it on Andriod 6 and 4 devices. The code is in Service module, code sample below. The n.Light = true has just been added (but it makes no difference).

Thanks for the quick response
Dave

private Sub iNotifyMessage(inStrg As String)
    Dim n As Notification
    
    n.Initialize
    n.Icon = "icon"
    ' TODO See TaskSelect.pHandleMessage()
    Dim xmlStr As String = inStrg.SubString(ModEposApp.EPOS_MESSAGE.Length)
    Dim responseObj As clsMessageRec
    responseObj.Initialize
    responseObj = responseObj.pXmlDeserialize(xmlStr)' TODO - need to determine if the deserialisation was successful
    n.Light = True
    n.SetInfo(responseObj.headingTop, responseObj.headingBottom, TaskSelect)
    n.Notify(1)
End Sub

 

[Erel]

Are you testing it when the device screen is turned off?

 

[davemorris]

Hi, Erel

Both, it don't work when the screen is OFF or ON.

Dave

 

[Erel]

The LED is only supposed to be active when the screen is turned off.

You can try to activate it with NotificationBuilder library.

I need to further investigate it...

 

[Erel]

It is fixed for the next update. For now you can use this workaround to enable the notification led:

Dim r As Reflector 'Reflection library
r.Target = n 'notification object
r.SetField("flags", Bit.Or(r.GetField("flags"), 1), "java.lang.int")

Call it before you call SetInfo. Note that on Android 8+ the behavior depends on the notification channel defaults.