Android Question Is there any way to keep an app active when device sleeps ?

[MitchBu]

When the user puts the device to sleep with the button, apps stop executing.

Is there any way to keep an app running when the device sleeps ?

TIA

 

[JohnC]

Not really.

But depending on what your app needs to do, we might be able to figure out a work-around to solve your situation.

For example, you can setup specific times to wake the device and run your app for a short period of time before the device goes back to sleep.

So, what exactly does your app do and how often does it need to do that?

 

[Sandman]

None that are reliable across different models and OS versions.

A niche device, or perhaps if it's rooted, might have a different situation.

 

[Erel]

Check this example: Background location tracking
As written above, it will not work reliably on all devices.

 

[MitchBu]

Thank you all

 

[MitchBu]

Oops. Something is missing:


Linking resources Error
c:\android\tools\..\extras\b4a_remote\androidx\core\core\1.7.0\unpacked-core-1.7.0\res\values\values.xml:113: error: resource android:attr/lStar not found.
error: failed linking references.

 

[Spavlyuk]

What's the value for targetSdkVersion in your manifest? androidx.core:core:1.5.0 and above require targetSdkVersion=30.

 

[MitchBu]

What's the value for targetSdkVersion in your manifest? androidx.core:core:1.5.0 and above require targetSdkVersion=30.

No, its not that. I set targetSDKVersion to 30 and I get exactly the same error message.

Seems some resource is missing.

 

[MitchBu]

I have downloaded and reinstalled the Android folder, following scrupulously the guidelines at https://www.b4x.com/b4a.html

No joy.

It is really frustrating. Feels like giving up altogether :/

 

[Erel]

Make sure to use 7zip to unzip the two packages. They include everything needed and you don't need to start B4A SdkManager at all.

 

[MitchBu]

Make sure to use 7zip to unzip the two packages. They include everything needed and you don't need to start B4A SdkManager at all.

I am sorry, Erel,

I have done what you recommend 4 or 5 times, used 7zip to extract. Still no luck.

 

[Erel]

Can you upload the project?

 

[MitchBu]

Can you upload the project?

It is the sample project I downloaded from the Background location tracking link you posted.

 

[Erel]

It of course compiles fine here. Can you post a screenshot with the Paths Configuration dialog?