How to add multiple widgets in the same app?
Actually, android:name for each widget have to be different. If you will do this as in example, only one widget will be visible in widgets list.
You need a receiver definition for each type in your manifest file like:
<receiver android:name=".MyWidget" android:label="@string/medium_widget_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/medium_widget_provider" />
</receiver>
<receiver android:name=".MyWidget" android:label="@string/large_widget_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/large_widget_provider" />
</receiver>
This would allow you to have the same AppWidgetProvider
class be used for multiple widgets, with different widget names and different sizes defined in the <appwidget-provider>
XML.
Now if you need more differences in your widgets than what is in the <appwidget-provider>
XML I would create a base widget class that implements all the common behavoir between the different types:
public abstract class MyBaseWidget extends AppWidgetProvider
And then each of your concrete implementations could extend MyBaseWidget. Then in your manifest file you would have a receiver definition for each of your concrete implementations like:
<receiver android:name=".MyMediumWidget" android:label="@string/medium_widget_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/medium_widget_provider" />
</receiver>
<receiver android:name=".MyLargeWidget" android:label="@string/large_widget_name">
<intent-filter>
<action android:name="android.appwidget.action.APPWIDGET_UPDATE" />
</intent-filter>
<meta-data android:name="android.appwidget.provider"
android:resource="@xml/large_widget_provider" />
</receiver>