Android Development: How can I keep screen on when the activity of my app is at background?

Question

I have tried the following code:

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

However, it only works when the program is on screen.

My app will launch Chrome to visit a website and it becomes background. At this time, it doesn't work.

If I want to keep the screen on when I launch my app, even though it may be at background, how can I do to implement it?

Answer 1

Try to create a class that extends service then add

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

It will run on background even your app is not on screen. You can also use wakelock. You can see a good tutorial here .