1 /* 2 * Copyright (C) 2007 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.apis.view; 18 19 import android.app.ExpandableListActivity; 20 import android.os.Bundle; 21 import android.widget.ExpandableListAdapter; 22 import android.widget.SimpleExpandableListAdapter; 23 24 import java.util.ArrayList; 25 import java.util.HashMap; 26 import java.util.List; 27 import java.util.Map; 28 29 30 /** 31 * Demonstrates expandable lists backed by a Simple Map-based adapter 32 */ 33 public class ExpandableList3 extends ExpandableListActivity { 34 private static final String NAME = "NAME"; 35 private static final String IS_EVEN = "IS_EVEN"; 36 37 private ExpandableListAdapter mAdapter; 38 39 @Override 40 public void onCreate(Bundle savedInstanceState) { 41 super.onCreate(savedInstanceState); 42 43 List<Map<String, String>> groupData = new ArrayList<Map<String, String>>(); 44 List<List<Map<String, String>>> childData = new ArrayList<List<Map<String, String>>>(); 45 for (int i = 0; i < 20; i++) { 46 Map<String, String> curGroupMap = new HashMap<String, String>(); 47 groupData.add(curGroupMap); 48 curGroupMap.put(NAME, "Group " + i); 49 curGroupMap.put(IS_EVEN, (i % 2 == 0) ? "This group is even" : "This group is odd"); 50 51 List<Map<String, String>> children = new ArrayList<Map<String, String>>(); 52 for (int j = 0; j < 15; j++) { 53 Map<String, String> curChildMap = new HashMap<String, String>(); 54 children.add(curChildMap); 55 curChildMap.put(NAME, "Child " + j); 56 curChildMap.put(IS_EVEN, (j % 2 == 0) ? "This child is even" : "This child is odd"); 57 } 58 childData.add(children); 59 } 60 61 // Set up our adapter 62 mAdapter = new SimpleExpandableListAdapter( 63 this, 64 groupData, 65 android.R.layout.simple_expandable_list_item_1, 66 new String[] { NAME, IS_EVEN }, 67 new int[] { android.R.id.text1, android.R.id.text2 }, 68 childData, 69 android.R.layout.simple_expandable_list_item_2, 70 new String[] { NAME, IS_EVEN }, 71 new int[] { android.R.id.text1, android.R.id.text2 } 72 ); 73 setListAdapter(mAdapter); 74 } 75 76 } 77
