Generally we write following line in android xml file.
It defines XML Namespace.
The Namespace Prefix is "android" and the Namespace URI is "http://schemas.android.com/apk/res/android"
Basically, every element (or attribute) in xml belongs to a namespace, a way of "qualifying" the name of the element.
Example :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:android="http://schemas.android.com/apk/res/android"
It defines XML Namespace.
The Namespace Prefix is "android" and the Namespace URI is "http://schemas.android.com/apk/res/android"
Basically, every element (or attribute) in xml belongs to a namespace, a way of "qualifying" the name of the element.
Example :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"