I don't know if it's possible, but here it goes. When i am playing some rpgs i would check from time to time a walkthrough in txt format. I'm using a txt reader and when i need to check the walkthrough i press the button to switch the apps, read what i need and then i return to the emulator. It works allright, but i was wondering if it's possible using android to open an app from another one, something like a shortcut. The best example would be the way the app GameGuardian works. Just a floating icon that shows the app when i click at it, so that i could easily check the walkthrough and return to my game.
