ADF task Flow Activities with Page Def file

Page definition files define the binding objects that populate data at runtime .This file bind the UI component with the data control .Following are the task flow activities use page definition file to bind data control

• Method call
• Router
• Task Flow call 
• View 

How to create Page def file?
Right click on each activity and select the option "Create Page Definition".Sample page def file for a task flow call activity

<?xml version="1.0" encoding="UTF-8" ?>

<pageDefinition xmlns="http://xmlns.oracle.com/adfm/uimodel" version="12.1.2.66.68"

                id="tfListeners_tfListeners_tfListenerCalledPageDef" Package="view.pageDefs" SkipValidation="true">

  <parameters/>

  <executables>

    <variableIterator id="variables"/>

  </executables>