AppWidgetProvider: the onEnabled method is not called

Question

I have a widget displaying data from a content provider. I want to know when the data in the content provider changes. As far as I know, the way to do this is

context.getContentResolver().registerContentObserver

But the AppWidgetProvider.onEnabled method is not called when I add the first instance of the widget. That is why I can not do registerContentObserver. Same thing with onDisabled.

How to solve this problem?

thank

Answer 1

You need to add android.appwidget.action.APPWIDGET_ENABLED as another action:

<intent-filter>
    <action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
    <action android:name="android.appwidget.action.APPWIDGET_ENABLED" />
    <action android:name="android.appwidget.action.APPWIDGET_DELETED" />
    <action android:name="android.appwidget.action.APPWIDGET_DISABLED" />  
</intent-filter>

Without this, you will not receive a broadcast that runs onEnabled ().

: APPWIDGET_DELETED onDeleted (...),     APPWIDGET_DISABLED onDisabled (...)

Answer 2

An AppWidgetProvider ( BroadcastReceiver) registerContentObserver(). , , - (, android:updatePeriodMillis).