CODEWITHSUNDEEP
androidandroid-appwidget
Sam
Sam

Reputation: 2630

Is there AppWidget callback for when an AppWidget is no longer visible?

I am updating my AppWidgets using a Service which listens to a pub/sub channel and essentially runs in the background forever, updating the AppWidgets whenever an update is received.

I am not concerned about battery life because the device is always plugged in, but I am concerned about CPU and memory usage by these background processes.

Is there a way I can get a notification that the AppWidget is no longer visible (e.g. when the home screen goes away or is swiped to another page)? I want to be able to toggle listening to the pub/sub channel if the AppWidget is not visible.

[Added] Or, is there even a synchronous method I can call to check whether an AppWidget is currently visible?

Upvotes: 3

Views: 857

Answers (1)

Peter Knego
Peter Knego

Reputation: 80340

There are ACTION_APPWIDGET_DELETED and ACTION_APPWIDGET_DISABLED broadcasts that tell when widget is deleted.

Alternatively you can also use AppWidgetProvider wrapper and implement onDelete() and onDisable() methods.

Upvotes: 1

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