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
17package com.example.android.apis.view;
18
19import android.app.ExpandableListActivity;
20import android.os.Bundle;
21import android.widget.ExpandableListAdapter;
22import android.widget.SimpleExpandableListAdapter;
23
24import java.util.ArrayList;
25import java.util.HashMap;
26import java.util.List;
27import java.util.Map;
28
29
30/**
31 * Demonstrates expandable lists backed by a Simple Map-based adapter
32 */
33public 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