WIll overlaying the screen with a dark UIView save battery power?

Question

Would a full screen black overlay UIView with a 0.8 alpha value reduce battery drain the same as setting the device system brightness to a low value?

I would prefer to use my own UIView overlay so I can animate it smoothly dimming the screen rather than messing with the users device settings.

Thanks for any help.

Geoff iOS 6, Universal app

yes, it would the same way using blackle.com would save energy. — Rakesh, Feb 13 '13 at 07:44

score 1 · Answer 1 · answered Feb 13 '13 at 07:56

1

I don't think so; the backlight is on regardless of what is on the screen, and this is what costs the energy. Luckily there is the energy diagnostics tool in instruments which may help you prove it one way or the other.

answered Feb 13 '13 at 07:56

jrturton

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WIll overlaying the screen with a dark UIView save battery power?

1 Answers1