ViewUtils.java

package cgeo.geocaching.utils;

import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;
import android.widget.ListView;

public final class ViewUtils {

    private ViewUtils() {
        // utility
    }

    /**
     * Sets ListView height dynamically based on the height of the items.
     *
     * @param listView to be resized
     * @return true if the listView is successfully resized, false otherwise
     */
    public static boolean setListViewHeightBasedOnItems(final ListView listView) {
        final ListAdapter listAdapter = listView.getAdapter();
        if (listAdapter != null) {

            final int numberOfItems = listAdapter.getCount();

            // Get total height of all items.
            int totalItemsHeight = 0;
            for (int itemPos = 0; itemPos < numberOfItems; itemPos++) {
                final View item = listAdapter.getView(itemPos, null, listView);
                item.measure(0, 0);
                totalItemsHeight += item.getMeasuredHeight();
            }

            // Get total height of all item dividers.
            final int totalDividersHeight = listView.getDividerHeight() *
                    (numberOfItems - 1);

            // Set list height.
            final ViewGroup.LayoutParams params = listView.getLayoutParams();
            params.height = totalItemsHeight + totalDividersHeight;
            listView.setLayoutParams(params);
            listView.requestLayout();

            return true;
        }

        return false;
    }
}