I found the solution here: How to check checkbox on clicking an image?
searchList.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View view,
int position, long arg3) {
LinearLayout item_view = (LinearLayout) view;
final RadioButton itemcheck = (RadioButton) item_view
.findViewById(R.id.rdBtn);
if (itemcheck.isChecked()) {
itemcheck.setChecked(true);
} else {
itemcheck.setChecked(false);
}
itemcheck.setChecked(true);
<RadioButton
android:id="@+id/rdBtn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:focusable="false" />