display my arraylist results in custom listview

Question

I want to display my arraylist results by using custom list view.

for now i'm displaying my results by using android layout.

setListAdapter(new StudentListAdapter(this,android.R.layout.simple_list_item_1, results));

I've two fields to display

1. Locimage(Image from ImageUrl)
2. Locname (side by side)

files are here: ERROR/AndroidRuntime(335): Caused by: java.lang.NullPointerException