Run on background, change screensaver and more.

[Ermask]

Hi ppl. I'm new to livecode, so i want to know if i can do some things with it on android. I have different questions and if someone is able to answer me and say what command or function i need to use, it will be very helpfull. Don't need to write full examples. Only the functions and, hopefully, i'll be able to learn the rest.

-Ii's possible to make an app that runs on the background?

-its possible to make an app that check the clock, and date to trigger events (like an alarm)

-it's possible to make an app that changes the background picture?

-And finally, its possible to change the screen saver with and app?

I'll be very glad if someone can help me with something. As i said, only the main commands or functions means a lot to me.
Thanks for your help guys.

[Simon]

HI Ermask,
Welcome to the forum
I can answer some of your questions

-Ii's possible to make an app that runs on the background?

No, apps are automatically removed from memory when the device requires the space. For iOS there is http://mergext.com/home/mergbgtask/ and an unsupported hack.

-its possible to make an app that check the clock, and date to trigger events (like an alarm)

Yes, look up localNotification

-it's possible to make an app that changes the background picture?

The background picture of the device? Not that I know of.

-And finally, its possible to change the screen saver with and app?

Do Android devices have a screen saver? Neither of the two I own do, they just go black.

Simon

[Ermask]

Thanks for the fast reply, and for all the info you gave me. Really usefull for me. But it makes me to ask another question. About the run on background.
For example, whatssap runs when andriod starts runing too. It does like a service. Is there a way to do the same with livecode?
I saw some apps that works like schedule, giving you messages or advices at the fixed hour and day you choose, and they just start running at the same time you turn on the phone. That is something i'm looking for.
Thanks again for your help.

[Simon]

Hi Ermask,
Very sorry it's mobileCreateLocalNotification one uses to create an "Alarm". If you read the info on that you'll see that it is not your app running in the background but a message held by the OS.

A simple example of the current state of liveCode in regards to background running.
I build an app that just counts up forever.
Start it up and I can see it counting.
Select another app
Is my app still counting? Maybe, you couldn't rely on it as the new app may need all the memory available to run and Android will happily shut down my app. Currently we have no way of stopping the OS from doing that.

As for background running like whatsapp I don't see a way of currently doing that. I think it polls the server when it's not actually running. Still I don't know how one would do that.

Also look up urlWakeUp.

Simon