Android Question [Service Module] Device in sleep mode does not work!

[Roberto P.]

HI All,
I cannot run a service when the device goes in sleep mode. I tried to use the forum recommendations, including StartServiceAt, but does not work!

Can anyone help me understand how to always run the service: off application and device in sleep.

I attach small project.
I specify that I have included two services just to make trials.


Thanks so much

 

[Erel]

Please don't make duplicate posts.

You should use a foreground service with a partial lock.

 

[Roberto P.]

Erel
I'm sorry, but have not been able to solve the problem!

can you give me more details or an example of "foreground service with a partial lock"

Thank you

 

[LucaMs]

https://www.b4x.com/android/forum/pages/results/?query=foreground+service+with+a+partial+lock.+

 

[Roberto P.]

https://www.b4x.com/android/forum/pages/results/?query=foreground service with a partial lock.

Thanks Luca, but I cannot find a concrete or practical reference for managing partial Lock!
you can help me

p.s. mi sembra di cercare un ago nel pagliaio....o fare la caccia al tesoro....

 

[LucaMs]

2. If you have a long running task and you don't want the OS to kill your process when there is no visible activity then you should call Service.StartForeground. Android will treat your application as if it is a visible application and will not kill it.

Partial lock
https://www.b4x.com/android/help/phone.html#phonewakestate

 

[Roberto P.]

Partial lock
https://www.b4x.com/android/help/phone.html#phonewakestate

many thanks Luca

I hope that with this it manages to avoid the blocking of services.

 

[Roberto P.]

Hi to all,
finally, using PhoneWakeState it is unable to prevent the device to go to sleep and active services are able to maintain active communication or jobs

It may be useful here are the steps I followed:

1- add the following permission in AddPermission (android.permission.WAKE_LOCK) files in the manifest editor

2- add member in 
Sub Process_Globals
   Dim pws As PhoneWakeState
end sub

3 - call function 
sub Service_Start
 pws.PartialLock 
end sub

4
Sub-Service_Destroy
 pws.ReleasePartialLock
end sub

thanks for help

 

[Erel]

Are you calling Service.StartForeground?

 

[Roberto P.]

No.
Do you think it is better to do it?

 

[Roberto P.]

I tried to use this code, but it crashes

Sub Service_Create
   
 
    notif.Initialize
    notif.Sound             = False
    notif.Icon                 = "conferma_icon"
    notif.Vibrate         = False
    notif.AutoCancel     = True
   
    Service.StartForeground(1, notif)

.....
End Sub

 

[Erel]

Do you think it is better to do it?

See my answer in post #2. I also recommend you to go over the services tutorial.

Please post the error message as text (right click to copy it).