Windows Phone does not expose any battery info other than DeviceStatus.PowerSource and it will fire the event PowerSourceChanged when plugging/unplugging the phone.
PowerSource is an enum of either Battery | External http://msdn.microsoft.com/en-us/library/microsoft.phone.info.devicestatus(v=vs.92).aspx On Tue, Jan 17, 2012 at 4:25 PM, Filip Maj <[email protected]> wrote: > The battery API in phonegap/cordova/callback 1.3.0 [1] is a simple > event-based one. However, it doesn't look like it's a full implementation > of any existing spec and is event-based only, which is annoying when you > just want to know the battery level in a synchronous way. It looks like > it's about 80% of the Battery Status Events W3C DAP spec [2]. Ours is > missing the 'batteryok' event, as well as the attachment point for event > handlers is different (we attach via a window.addEventListener call, > whereas the spec calls for a new BatteryEventSource().addEventListener). > The event names seem pretty arbitrary (batterycritical, batterylow, > batterystatus and batteryok) and don't mention any guidelines for > thresholds. > > To confuse matters further, there is a newer Battery Status API DAP spec > [3] that looks more complete and, in my opinion, is a nicer API and > provides a non-evented approach to querying the battery state on top of > supporting the events. [3] is the "Stable Draft" whereas [2] is the "Public > Working Draft". The events make more sense too: > > attribute < > http://www.w3.org/TR/2011/WD-battery-status-20111129/#widl-BatteryManager-onchargingchange> > Function? onchargingchange; > attribute Function? onchargingtimechange< > http://www.w3.org/TR/2011/WD-battery-status-20111129/#widl-BatteryManager-onchargingtimechange > >; > attribute Function? onlevelchange< > http://www.w3.org/TR/2011/WD-battery-status-20111129/#widl-BatteryManager-onlevelchange > >; > attribute Function? ondischargingtimechange< > http://www.w3.org/TR/2011/WD-battery-status-20111129/#widl-BatteryManager-ondischargingtimechange > >; > > I think we should change our implementation to match the one described in > [3], and am wondering what everyone else thinks. If there is consensus on > it, perhaps we can figure out when we want to incorporate this change: 1.4, > 1.5, etc. > > Curious to hear what everyone else thinks. > > -Fil > > [1] > http://docs.phonegap.com/en/1.3.0/phonegap_events_events.md.html#batterycritical > [2] http://www.w3.org/TR/2011/WD-battery-status-20110915/ > [3] http://www.w3.org/TR/2011/WD-battery-status-20111129/ >
