Adding Children Dynamically To An Expandable List View Generates Java.lang.nullpointerexception At Expandablelistadapter

I am trying to add records dynamically for a particular group ( say for the first) in my project. This is the code i came up with , which i insert while adding a record. so that w

Solution 1:

mExpandableList is null so this.findViewById(R.id.expandable_list) is failing to find the view.