Configurable Widget

[dario-digregorio]

Hi,
I am currently struggling a bit to implement a configurable Widget for Android.
First of all I use the Glance Implementation for the normal widget and assigned a Configuration Activity and XML View for the configuration screen.
After configuring the Widget I want to save the data in the SharedPreferences and access that in my Flutter Application where I use the value inside my app to call other functions.

I would expect a method inside HomeWidgetPlugin with a saveWidgetData method to save the data with the corresponding Widget Id. I then can access the data with the right key from my Flutter Application.
The same goes for iOS which I did not tried out yet.

I would create a PR if there is a need for such a feature or to add more information to the README.

[dario-digregorio]

I managed now to retrieve the widget information by saving the configuration with the appWidgetId and the getData()method. I then can iterate in the Flutter part over the widgetIds and can retrieve the configuration. Is this how you would do it?

internal fun saveLocationPref(context: Context, appWidgetId: Int, location: Location?) {
    val prefs = HomeWidgetPlugin.getData(context).edit()
    prefs.putString(PREF_KEY + appWidgetId, Gson().toJson(location))
    prefs.apply()
}

[dario-digregorio]

I am still struggling with some parts of implementing the configuration. I want to save the configuration information about the widget, let's say a weather location, into the SharedPreferences. While on Android you have methods like onCreate to save the location and onDelete to delete it again. I don't have similar hooks in iOS. I can only retrieve the information from the IntentTimelineProvider when the widget gets initialized with getSnapshot as far as I can see. The problem with that is that is I don't know when the widget is being deleted and therefore I don't know how to delete the location from the SharedPreferences again. Furthermore there is no WidgetId which I could use to uniquely identify a widget from the flutter part.
At this point I am not sure how to implement all this :/