I’m trying to get my android app to request activity recognition permission when it is not allowed, but I get the message ‘No sensor detected on this device when I run the below code.

I want to later in my app be able to choose an Image to be displayed in the PhotoView and it is supposed to stay there, after restarting the app. for this i need to read the External storage but after trying evrything on the Internet i cant get it to ask me for permission, it successfuly checks that i have no such permission but does not ask me to grant it, i am fairly new to this so sorry if there is something stupid i overlooked:

READ_CALENDAR permission is added in manifest.
When is started installed and started first time it shows permission pop. User will allow all permission
But when we check with code is permission lacking (NOT_GRANTED) it comes as true even if we allowed all permission at start.