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Imagine you are working on a widget with a background service , and it eat battery fast, So you don’t want it to run all the time: when the sceen off, stop it. When the screen on enable it. But that is not enough, when there is a foreground activity running( you cannot see the widget, so you don’t need it.stop it ). And renable it when we back to the desktop.
Is there a solution? Help!
There aren’t any Intents broadcast AFAIK that tell you when or when not the desktop is not visible. Widgets are only supposed to lightweight windows onto your application – the solution is to reduce the battery usage of your widget.
If you use
AlarmManagertogether with a non_WAKEUPalarm type to update your widget and specify an update time of 0 in your XML, then your widget will only be updated while the phone is awake.