Discovery about Launcher on Android 4.x (Ice Cream Sandwich) Part2

Launcher part 2 Widget & Hotseat

Framework for Widget

You could setup your widget in AndroidManifest.xml of app.

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.mywidget.app">

<application android:icon="@drawable/icon" android:label="@string/app_name">

<receiver android:label="@string/app_name" android:name="com.mywidget.app.WidgetReciver">

<intent-filter>

<action android:name="android.appwidget.action.APPWIDGET_UPDATE"/>

<action android:name="android.appwidget.action.APPWIDGET_DELETED"/>

<action android:name="android.appwidget.action.APPWIDGET_DISABLED"/>

<action android:name="android.appwidget.action.APPWIDGET_ENABLED"/>

</intent-filter>

<meta-data

android:resource="@xml/my_widget_provider" >

</meta-data>

</receiver>

</application>

</manifest> 

And design the look of widget here.

main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:orientation="horizontal">

<ImageButton

android:id="@+id/Button01"

android:background="@drawable/bloodeye" />

<ImageButton

android:id="@+id/Button02"

android:background="@drawable/bloodeye" />

</LinearLayout>

my_widget_provider.xml

<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android"

android:minWidth="110dp"

android:minHeight="110dp"

android:updatePeriodMillis="1000"

android:initialLayout="@layout/main"

/>

Size: The cells of widget

# of Cells	Available Size (dp)
1	40dp
2	110dp
3	180dp
4	250dp

Screenshot

Operation Framework of Widget in Launcher: 
how to drag your widget and remove it later.

HotSeat.xml

<com.android.launcher2.Hotseat

       launcher:cellCountX="5"

       launcher:cellCountY="1">

       <com.android.launcher2.CellLayout android:id="@+id/layout"/>

</com.android.launcher2.Hotseat>

Modify the default shortcus fo HotSeat(Red Parts)
Default_workspace.xml

<!-- Hotseat (We use the screen as the position of the item in the hotseat) -->

<favorite

launcher:packageName="com.android.contacts“

launcher:className="com.android.contacts.activities.DialtactsActivity"

launcher:x="0"

launcher:y="0" />

<favorite

launcher:packageName="com.android.contacts“

launcher:className="com.android.contacts.activities.PeopleActivity"

launcher:x="1"

launcher:y="0" />

<favorite

launcher:packageName="com.android.mms“

launcher:className="com.android.mms.ui.ConversationList"

launcher:x="3"

launcher:y="0" />

<favorite

launcher:packageName="com.android.browser“

launcher:className="com.android.browser.BrowserActivity"

launcher:x="4"

launcher:y="0" />

</favorites>

Drag a widget into another one -> addFolder

Part 2 is over

Thank you for your patient reading