Mark --
You left out what happens with 1338 receivers... :)
Jake --
I implemented my two widget sizes as two receivers, the reason being that <meta-data> that references the widget_info_<widget_size_variation>.xml goes under <receiver>. The metadata is important because it specifies minimum widget size, which differs between my widgets (3x1 and 2x1). Besides, that's how the home screen app knows that there are two widgets.
Multiple broadcasts haven't been a problem with my setup, because my code double checks widget Ids against my own known widget Id list for that particular widget size. The list is maintained by the widget configuration activity (add) and the receiver's onDeleted (remove).
The update action never crosses into the wrong receiver, apparently because it has the Java class name set.
And actually, this is one solution you could try. For your own broadcast intents (I presume, triggering a widget update in response to application logic) you can set the class name in the intent, to make "large" broadcasts go to "large" receiver, and "small" go to "small".
For intents broadcast by the system (if you widgets watch some system state changes), you could implement just one receiver as Mark recommends, and update both "large" and "small" widget lists.
In my code I just let both sets of widgets update from their own intent filters, each having the same system intents that I care about. With the widget Id checking as descibed above, it affects only widgets managed by that particular reciever.
-- Kostya
2011/4/1 Mark Murphy <mmurphy@commonsware.com>
On Fri, Apr 1, 2011 at 3:43 PM, Jake Colman <colman@ppllc.com> wrote:Sure. To paraphrase Kostya, as far as Android is concerned, intent
>>>>>> "KV" == Kostya Vasilyev <kmansoft@gmail.com> writes:
>
> KV> As far as Android is concerned, IntentService knows nothing about
> KV> home screen widgets.
>
> KV> Since you know which widget receivers' onUpdate was called, pass
> KV> this information to the service (e.g. by setting an intent
> KV> extra).
>
> I implemented two Broadcast Receivers, one for each widget size. Both
> receivers have the same set of intent filters. If I instantiate just
> one size widget and broadcast an intent, both receivers respond to that
> intent - even though only one size widget has been instantiated.
>
> Does this make sense? Should the "large" receiver respond to intents if
> only the small widget has been instantiated?
filters know nothing about home screen app widgets.
If you have one BroadcastReceiver in your manifest with an intent
filter, and you send a broadcast matching that filter, one
BroadcastReceiver will respond.
If you have two BroadcastReceivers in your manifest with the same
intent filter, and you send a broadcast matching that filter, two
BroadcastReceivers will respond.
If you have 1,337 BroadcastReceivers in your manifest with the same
intent filter, and you send a broadcast matching that filter, 1,337
BroadcastReceivers will respond.
This begs the question of why you have multiple AppWidgetProviders.
You only need one.
To tell small from large, call getAppWidgetInfo() on the
AppWidgetManager inside your onUpdate() or wherever. That will return
a Java object mirroring your <appwidget-provider> XML element. Use the
minWidth and minHeight values, or possibly the initialLayout value, to
determine which size it is.
--
Mark Murphy (a Commons Guy)
http://commonsware.com | http://github.com/commonsguy
http://commonsware.com/blog | http://twitter.com/commonsguy
Android Training in London: http://bit.ly/smand1, http://bit.ly/smand2
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