load phone contacts with async task

Issue

I am getting the phone contacts and problems are given but when I am using the async task the application stops working.

This is my error:

java.lang.IllegalArgumentException: Can't have a viewTypeCount < 1

I am calling the async task in the onCreate method like so:

new displayContacts().execute();

What am I doing wrong?

Solution

I guess getViewTypeCount returns the number of different types of views this adapter can return. type of view should just return 1.

public int getItemViewType(int position) {
    return 0;
}

public int getViewTypeCount() {
    return 1;
}

Answered By - Tung Tran