Question

What coding tricks, compilation flags, software-architecture considerations can be applied in order to keep powerconsumption low in an AIR for iOS application (or to reduce powerconsumption in an existing application that burns too much battery)?

Answer 1

One of the biggest things you can do is adjust the framerate based off of the app state.

You can do this by adding handlers inside your App.mxml

<s:ViewNavigatorApplication xmlns:fx="http://ns.adobe.com/mxml/2009"
                        xmlns:s="library://ns.adobe.com/flex/spark"
                        activate="activate()" deactivate="close()" />

Inside your activate and close methods

//activate
FlexGlobals.topLevelApplication.frameRate = 24;

//deactivate
FlexGlobals.topLevelApplication.frameRate = 2;

You can also play around with this number depending on what your app is currently doing. If you’re just displaying text try lowering your fps. This should give you the most bang for your buck power savings.