java - Is there a way to put a running android app as the android device wallpaper? -

java - Is there a way to put a running android app as the android device wallpaper? -

in detail, want know if it's possible take output running android app , pipe to background of display. in other words, have background wallpaper update dynamically.

no can't way. reason because android starts app activity (unless app made of services run in background other apps call). whenever activity starts, comes foreground , receives user focus. android documentation states if user performs action starts activity or switches different app, scheme calls set of lifecycle methods on activity moves background. @ point, activity no longer visible.

the closest concept trying live wallpaper service , different paradigm.

java android android-wallpaper