update Expandable ListView Height - Android android.widget

Android examples for android.widget:ListView

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Description

update Expandable ListView Height

Demo Code

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

public class Main{

    /**/*from  w  w  w. j  av a 2 s . co m*/
     * To compute the expandable listview for a given group.
     *
     * @param listView ExpandableListView
     * @param group    group
     */
    public static void updateExpandableListViewHeight(
            ExpandableListView listView, int group) {
        ExpandableListAdapter listAdapter = (ExpandableListAdapter) listView
                .getExpandableListAdapter();
        if (listAdapter == null) {
            // pre-condition
            return;
        }

        int totalHeight = 0;
        for (int i = 0; i < listAdapter.getGroupCount(); i++) {
            View groupItem = listAdapter.getGroupView(i, false, null,
                    listView);
            groupItem.measure(0, 0);

            totalHeight += groupItem.getMeasuredHeight();

            if (((listView.isGroupExpanded(i)) && (i != group))
                    || ((!listView.isGroupExpanded(i)) && (i == group))) {
                for (int j = 0; j < listAdapter.getChildrenCount(i); j++) {
                    View listItem = listAdapter.getChildView(i, j, false,
                            null, listView);
                    listItem.measure(0, 0);
                    totalHeight += listItem.getMeasuredHeight();
                }
            }
        }

        ViewGroup.LayoutParams params = listView.getLayoutParams();
        params.height = totalHeight
                + (listView.getDividerHeight() * (listAdapter
                        .getGroupCount() - 1));
        listView.setLayoutParams(params);
        listView.requestLayout();
    }

}

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