A Restaurant In Your Own Homewidget. It is actually a clone of the nine-patch used as the background for
the Toast class, culled from the Android open source project. You are
welcome to use this image or find (or create) another of your choosing.
You will also need an icon, which will go alongside the LunchList name in
Android's list of available widgets. Find some likely icon (32px square or so)
and add it as LunchList/res/drawable/icon.png.
Step #2: Design the App Widget Layout
Next, we need to define a layout for our app widgets. App widgets are
created via layout files, no different than activities, ListView rows, and the
like. Right now, all we want is to show the name of the app widget, inside of
something to serve as the widget's background.
So, create a LunchList/res/layout/widget.xml file with the following content:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/widget_frame"
>
<TextView android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_alignParentLeft="true"
android:textSize="10pt"
android:textColor="#FFFFFFFF"
/>
</RelativeLayout>Step #3: Add an (Empty) AppWidgetProvider
Next, we need to create an AppWidgetProvider. AppWidgetProvider, a subclass
of BroadcastReceiver, provides the base implementation for an app widget
and gives us lifecycle methods like onUpdate() we can override to add
custom behavior.