Dim iPhone Screen, but don't let it sleep

Question

Update

https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIScreen_Class/index.html#//apple_ref/occ/instp/UIScreen/brightness

That\'s the Ap

Answer 1

I use a "nightstand" type alarm clock app that, if you double-tap its clock screen, dims the screen by some amount.

I believe what it's probably really doing is laying a partially-opaque black UIView over its entire content. I think the backlight isn't really dimmed, but the black color laid over the screen makes it seem dimmer. It works.