[How-to] Completely close Android apps
I've noticed that, if an Android app is opened (and used) an then it is closed with gesture, that app gets closed and disappears from processes, BUT, for real, in Dalvik that app stays "on", silently on, in background.
Infact, i.e. WhatsApp status is always online, other apps continue in receiving messages (even if they are not allowed to work in beckground) and when opened again, they show new messages or other activities, only possible if already opened or never closed. And.. RAM fills up and doesn't empty. If I allow WhatsApp to run in background, the process starts at boot, and fills RAM of NN%. Then if I open the app WhatsApp, RAM fills of another nn%. If I close the app (not the process), RAM stays filled of that nn% (almost). If I force close WhatsApp from Settings, it closes also the process, and I don't want this. I only want to close the app, and them empty RAM of the nn% added opening the app.
This happens also with apps that are not allowed to run in background, that continue working silently in Dalvik, even if closed
How can I completely close an Android app, opened avoiding it to stays silently on in Dalvik?