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copied!<p>Solved - I can confirm that an Activity is NOT needed if you want create a Button to update an Android AppWidget.</p> <p>I have been able to implement my AppWidgetProvider class such that it registers an android.appwidget.action.APPWIDGET_UPDATE intent-filter with the Broadcast receiver in the AndroidManifest.xml, which then fires the onUpdate event in the AppWidgetProvider class (which in turn then runs the UpdateService).</p> <pre><code> <receiver android:name=".MyWidget" android:label="@string/widget_name"> <intent-filter> <action android:name="android.appwidget.action.APPWIDGET_UPDATE" /> </intent-filter> <meta-data android:name="android.appwidget.provider" android:resource="@xml/widget" /> </receiver> </code></pre> <p>The UpdateService in my AppWidgetProvider class then uses onHandleIntent to run a private buildUpdate method - which registers the onClick event with a call to setOnClickPendingIntent as follows:</p> <pre><code>// set intent and register onclick Intent i = new Intent(this, MyWidget.class); PendingIntent pi = PendingIntent.getBroadcast(context,0, i,0); updateViews.setOnClickPendingIntent(R.id.update_button,pi); </code></pre> <p>Here is a link to some source code of a working example, which shows how an update button can be used to update a Twitter widget:</p> <p><a href="https://github.com/commonsguy/cw-advandroid/tree/b01438e7f0fed8f795ddec4be43066905f03d0cc/AppWidget/TwitterWidget" rel="noreferrer">https://github.com/commonsguy/cw-advandroid/tree/b01438e7f0fed8f795ddec4be43066905f03d0cc/AppWidget/TwitterWidget</a></p>

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