Hey, I wanted to ask if there is a way to let a wallpaper run in the background (also when apps are open) to count the time how long I was on the phone in general.
Thanks Flolo 
Hi @Flolo ,
Isn’t it the default behavior when doing a wallpaper with Processing for Android (that it runs continuously no matter what)? Have you tried this? 
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Hey thanks for your reply
and I’m sorry that I will answer now I had a lot of homework to Do…
So i have no idea where the Problem is. I have a Samsung galaxy A71 and the Wallpaper works finde but as soon I open an App the wallpaper Stopps Running.
I know IT because the wallpaper counts the time in a float variable. (Time += 1 / frameRate) in draw and IT Shows It with text(time, 0, 0, width, height);
Is it a problem with Samsung or is there another loop I can Use ?