Calculate the size of a list view or how to tell it to fully expand

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Well, thanks to Rudy, his suggestions was very helpful. Here is how it can be implemented.

1) Create a new class that extends ListView: 

package com.example.android.views;

import android.content.Context;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.widget.ListView;

public class ExpandedListView extends ListView {

    private android.view.ViewGroup.LayoutParams params;
    private int old_count = 0;

    public ExpandedListView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    protected void onDraw(Canvas canvas) {
        if (getCount() != old_count) {
            old_count = getCount();
            params = getLayoutParams();
            params.height = getCount() * (old_count > 0 ? getChildAt(0).getHeight() : 0);
            setLayoutParams(params);
        }

        super.onDraw(canvas);
    }

}

2) … and finally add the new view to your xml layout file: 

<com.example.android.views.ExpandedListView
    android:id="@+id/list"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:scrollbars="none"
    android:padding="0px"
    />

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