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Is there a way to reconnect to Wi-Fi whenever an application accesses the network?

Background: I have a rooted e-book reader that runs Android 2.2 (Sony Reader PRS-T1). The system offers an option to automatically enter Wi-Fi standby mode when the connection is idle, which I like: This behavior saves a lot of battery juice when reading an e-book.

Some of the preinstalled apps know how to reconnect the Wi-Fi whenever they need network access. Unfortunately, conventional Android apps do not know how to do this and fail. For example, I have installed the Kindle for Android app, and it fails to sync reading positions unless I have manually re-enabled the the Wi-Fi before trying to do so.

Is there a method to leave Wi-Fi standby mode and reconnect to Wi-Fi whenever there is demand?

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I'm not certain, but I'd expect Tasker to be able to do this.

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Not that I know of, at least not out of the box. I have Tasker on my phone, and I cannot find an option to trigger a task when an app accesses the network. Maybe you're thinking of a specific Tasker or Locale plugin? – altruizine Jul 11 '12 at 13:32
The behavior described in the question sounds to me like a custom WiFi standby solution - this wouldn't be something available in Tasker. What one could do, though, is have Tasker toggle WiFi on/off (perhaps with a short wait in between). That might kick it out of standby. – Mr. Buster Jul 11 '12 at 22:42
Sure, Tasker can kick wifi out of standby. The question is -- how can this be triggered on demand, automatically? – altruizine Jul 12 '12 at 10:43
Easy to do if Wifi should always be active when certain apps run in the foreground (just select those apps as conditions for a profile). But if they simply "want to access" while in background, there's nothing I can think of. – Izzy Aug 9 '12 at 11:14
I'm thinking of WeFi app, but it's probably not a good idea since it would be looking for a WiFi connection all the time. – geffchang Aug 10 '12 at 14:51
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