Java tutorial
//package com.java2s; /** * * ACCAndroid - ACC Android Development Platform * Copyright (c) 2014, AfirSraftGarrier, afirsraftgarrier@qq.com * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * */ import android.widget.ExpandableListView; public class Main { public static void expendAll(ExpandableListView expandableListView) { if (expandableListView == null || expandableListView.getAdapter() == null) { return; } int groupCount = expandableListView.getAdapter().getCount(); // System.out.println("+++++++++++++"); // System.out.println(groupCount); for (int i = 0; i < groupCount; i++) { try { expandableListView.expandGroup(i); } catch (Exception exception) { exception.printStackTrace(); } } } }