1 <body> 2 <p>Contains the components necessary to create "app widgets", which users can embed in other 3 applications (such as the home screen) to quickly access application data and services without 4 launching a new activity.</p> 5 6 <p>For more information, see the 7 <a href="{@docRoot}guide/topics/appwidgets/index.html">App Widgets</a> guide.</p> 8 {@more} 9 10 <p>The behavior of an app widget is published by an "app widget provider." An "app widget host" is 11 a component that can contain app widgets (such as the Home screen).</p> 12 13 <p>Any application can publish app widgets (as an app widget provider). All an application needs to 14 do to publish an app widget is 15 provide a {@link android.content.BroadcastReceiver} that receives the {@link 16 android.appwidget.AppWidgetManager#ACTION_APPWIDGET_UPDATE} intent 17 and provide some metadata about the app widget. Android provides the 18 {@link android.appwidget.AppWidgetProvider} class, which extends {@link 19 android.content.BroadcastReceiver}, as a convenience class to define the app widget behavior and aid 20 in handling the broadcasts.</p> 21 22 <p>App widget hosts are the containers in which widgets can be placed. Most of the look and feel 23 details are left up to the widget hosts. For example, the home screen has one way of viewing 24 widgets, but the lock screen could also contain widgets, and it would have a different way of 25 adding, removing and otherwise managing widgets.</p> 26 27 <p>For information about implementing an app widget host, see the {@link 28 android.appwidget.AppWidgetHost} class.</p> 29 30 </body> 31 32
