Question: I want to implement CustomArrayAdapter and following is the constructor I have written for my custom adapter

```
public CustomUsersAdapter(Context context, ArrayList<User> users) {
        super(context, 0, users);
     }

```

The second argument in the super call The resource ID for a layout file containing a TextView to use when instantiating views. I dont know which resource ID is being referred here. Can anyone please explain in detail which resource ID is being referred here.

My overridden getView method is as follows :-

```
 @Override
     public View getView(int position, View convertView, ViewGroup parent) {
        // Get the data item for this position
        User user = getItem(position);    
        // Check if an existing view is being reused, otherwise inflate the view
        if (convertView == null) {
           convertView = LayoutInflater.from(getContext()).inflate(R.layout.item_user, parent, false);
        }
        // Lookup view for data population
        TextView tvName = (TextView) convertView.findViewById(R.id.tvName);
        TextView tvHome = (TextView) convertView.findViewById(R.id.tvHometown);
        // Populate the data into the template view using the data object
        tvName.setText(user.name);
        tvHome.setText(user.hometown);
        // Return the completed view to render on screen
        return convertView;
    }

```

Answer: 
```
 I dont know which resource ID is being referred here.

```

Since you put `0` in the second parameter of the constructor it wont have any reference to any layout

as the [documentation](http://developer.android.com/reference/android/widget/ArrayAdapter.html#ArrayAdapter(android.content.Context,%20int,%20int)) is saying:

```
 resource   The resource ID for a layout file containing a layout to use when instantiating views.

```

Now if you put an existing layout to the constructor then that layout will be use to instantiate the view of your `listViewItems` but you need to override the `getView` method to enable you to design which text goes where in your layout.

If you are planning to put an existing layout then use another constructor on it:

```
public ArrayAdapter (Context context, int resource, T[] objects)

```

But for design I wont really add any resource layout to the constructor but directly **inflate** the view in your `getView` method and return that view.
I'm not quite sure what you're going to use your `ArrayAdapter` for, but one reason for using an `ArrayAdapter` is to display a `listView` of a layout depending on the array.

Here is an example of what the constructor should look like

```
public CustomListAdapter() {
    super(Activity_Main.class, R.layout.listview_item, array);
}

```

Here is what could be in your listview\_item :

```
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="name"
        android:id="@+id/name" />

</LinearLayout>

```

Basically, the `CustomListAdapter` will generate X number of `listview_item` layouts height wise in a `ListView`, where X is the size of `array`.

Hope this helps.