Question

I follow this guide to make a custom ListView for my app. The tutorial uses a namespace called ottasee, which should be defined as a xml-namespace inside the element. So here is some of my code:

 <com.my.app.Layout.CustomListView
            xmlns:ottasee="what_should_i_put_here?"
            android:id="@+id/lastCases"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:divider="@null"
            android:scrollbars="none"
            ottasee:dropShadowBottom="true"
            ottasee:dropshadowrightsrc="@drawable/drop_shadow"
            />

I can see that the attributes ottasee:dropShadowBottom and ottasee:dropshadowrightsrc are part of my attrs.xml in the values folder. Like this:

<?xml version="1.0" encoding="UTF-8"?>
<resources>
 <declare-styleable name="DropShadowListView">
     <attr format="boolean" name="dropShadowLeft"></attr>
     <attr format="reference" name="dropShadowLeftSrc"></attr>
     <attr format="boolean" name="dropShadowRight"></attr>
     <attr format="reference" name="dropShadowRightSrc"></attr>
     <attr format="boolean" name="dropShadowTop"></attr>
     <attr format="reference" name="dropShadowTopSrc"></attr>
     <attr format="boolean" name="dropShadowBottom"></attr>
     <attr format="reference" name="dropShadowBottomSrc"></attr>
 </declare-styleable>
</resources>

How should I define the xml namespace for the ListView in order to grab the attributes from the attrs.xml file?

Thanks!

EDIT

My CustomListView is under the package com.my.app.Layout and I tried to declare the ns this way: xmlns:ottasee="http://schemas.android.com/apk/res/com.my.app.Layout

But I only get an error in my xml file:

Multiple annotations found at this line:
    - error: No resource identifier found for attribute 'dropShadowBottom' in package 
     'com.my.app.Layout'
    - error: No resource identifier found for attribute 'dropshadowrightsrc' in package 
     'com.my.app.Layout'

How can I accomplish setting the right ns?

Answer 1

You should add the following the following to include the necessary attributes to your namespace:
xmlns:ottasee ="http://schemas.android.com/apk/res-auto"

Slightly different to @budius’s answer as it will auto-resolve the package name for you.