Regarding the answer to my previous question of Android's idle Wi-Fi use, it seems like a huge waste of battery life to have Wi-Fi constantly scanning and draining battery. So it seems it would be better to turn Wi-Fi off.
However, I'd still want my Android to connect automatically to my home network, for podcast sync and other large transfers. This wouldn't need to be immediate, since I usually spend a long time at home.
I do know there are apps that give me a Wi-Fi toggle widget, but I don't want to be constantly switching Wi-Fi on and off manually. I know it's only a minor bother, but it just seems silly to have to do that since it would be pretty easy to have logic that does it for me.
Question: Is there any way to periodically (say, once every 15 mins) turn Wi-Fi on just to do a quick network discovery, then in case a known Wi-Fi is found keep it on as long as I am in range? (3rd-party apps are also okay)
(I expect this would in any case require rooting the system, but that's understandable and not a problem.)
Answer
One solution to this problem: use a tasking program such as Locale or Tasker and create certain conditions that will enable your wifi (essentially writing a script as you described).
For example: Use GPS and determine if I'm at my home (I believe you can use real GPS, which will consume quite a bit of power, or base it off of which cell tower you are connected to, which you would already know anyways if not in airplane mode).
Or you could even setup certain times of the day you know you will be at home, or work, or wherever you regularly have wifi.
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