| /* |
| * Copyright (C) 2007 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.example.android.apis.view; |
| |
| import android.app.ExpandableListActivity; |
| import android.content.Context; |
| import android.database.Cursor; |
| import android.os.Bundle; |
| import android.provider.ContactsContract.Contacts; |
| import android.provider.ContactsContract.CommonDataKinds.Phone; |
| import android.widget.ExpandableListAdapter; |
| import android.widget.SimpleCursorTreeAdapter; |
| |
| /** |
| * Demonstrates expandable lists backed by Cursors |
| */ |
| public class ExpandableList2 extends ExpandableListActivity { |
| private static final int COLUMN_CONTACT_ID = 0; |
| |
| private static final String[] CONTACT_PROJECTION = new String[] { |
| Contacts._ID, |
| Contacts.DISPLAY_NAME |
| }; |
| |
| private static final String[] PHONE_PROJECTION = new String[] { |
| Phone._ID, |
| Phone.CONTACT_ID, |
| Phone.NUMBER |
| }; |
| |
| private ExpandableListAdapter mAdapter; |
| |
| @Override |
| public void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| |
| // Query for people |
| Cursor groupCursor = managedQuery(Contacts.CONTENT_URI, |
| CONTACT_PROJECTION, null, null, null); |
| |
| // Set up our adapter |
| mAdapter = new MyExpandableListAdapter(groupCursor, |
| this, |
| android.R.layout.simple_expandable_list_item_1, |
| android.R.layout.simple_expandable_list_item_1, |
| new String[] {Contacts.DISPLAY_NAME}, // Name for group layouts |
| new int[] {android.R.id.text1}, |
| new String[] {Phone.NUMBER}, // Number for child layouts |
| new int[] {android.R.id.text1}); |
| setListAdapter(mAdapter); |
| } |
| |
| public class MyExpandableListAdapter extends SimpleCursorTreeAdapter { |
| |
| public MyExpandableListAdapter(Cursor cursor, Context context, int groupLayout, |
| int childLayout, String[] groupFrom, int[] groupTo, String[] childrenFrom, |
| int[] childrenTo) { |
| super(context, cursor, groupLayout, groupFrom, groupTo, childLayout, childrenFrom, |
| childrenTo); |
| } |
| |
| @Override |
| protected Cursor getChildrenCursor(Cursor groupCursor) { |
| int contactId = groupCursor.getInt(COLUMN_CONTACT_ID); |
| // The returned Cursor MUST be managed by us, so we use Activity's helper |
| // functionality to manage it for us. |
| return managedQuery(Phone.CONTENT_URI, |
| PHONE_PROJECTION, |
| Phone.CONTACT_ID + " = " + contactId, |
| null, null); |
| } |
| } |
| } |