What does unbound prefix mean, when parsing XML?

Question

I Have made a xml file in my android app for the Custom Widget and the error is:

Error parsing XML: unbound prefix

Here is my x

Answer 1

The second XML namespace is correct however it is the namespace of your custom widget so you need to define the name space appropriately:

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

becomes:

xmlns:mynamespace="http://schemas.android.com/apk/res/com.myproject.myprojectname"

Thereafter any custom attribute elements you define for your custom view will be referred to as:

mynamespace:my_defined_attribute="success"

instead of :

android:layout_width="fill_parent"