From Eitan Tsur on 2016/11/25 17:48:37 +0000
Ok so first off besides double-click the hardware button to enable theatre mode I’ve seen at least one implementation of this on the ZenWatch 2. The ZenFit sleep tracking app automatically enables Theatre Mode upon launching.
Further, I’ve found this blog post talking about how to set the global variable for theatre mode.
If Asus can do it, there’s most definitely an API call. Please re-visit this request.
Copied from original feature request: http://urbandroid.uservoice.com/forums/264867-sleep-as-android/suggestions/17241332-automatically-enable-theatre-mode-when-entering-sl