How to make an android app to always run in background?

[AC Question]

I'm using an android device. When I open the Settings > Apps > Running, there is an option on the top-left of the screen to see : (1) Running processes (2) Cached background processes. And the app(s) which I wanted to run always (24×7) is/are unfortunately listed under (2) Cached background processes, which I wanted it/them to be listed under (1) Running processes (if it is possible). Can it be done? Or in short, how to make an android app to always run in background?

 

[B. Diddy]

Welcome to Android Central! That's up to the developer's programming--there's nothing you can do manually to do this, unless you maybe if you root the phone.

Are you a developer, and are asking how to make your app do this? Or are you an end-user?