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 android.widget;
18
19import android.view.View;
20import android.view.ViewGroup;
21
22/**
23 * Extended {@link Adapter} that is the bridge between a
24 * {@link android.widget.Spinner} and its data. A spinner adapter allows to
25 * define two different views: one that shows the data in the spinner itself
26 * and one that shows the data in the drop down list when the spinner is
27 * pressed.
28 */
29public interface SpinnerAdapter extends Adapter {
30    /**
31     * Gets a {@link android.view.View} that displays in the drop down popup
32     * the data at the specified position in the data set.
33     *
34     * @param position index of the item whose view we want.
35     * @param convertView the old view to reuse, if possible. Note: You should
36     *        check that this view is non-null and of an appropriate type before
37     *        using. If it is not possible to convert this view to display the
38     *        correct data, this method can create a new view.
39     * @param parent the parent that this view will eventually be attached to
40     * @return a {@link android.view.View} corresponding to the data at the
41     *         specified position.
42     */
43    public View getDropDownView(int position, View convertView, ViewGroup parent);
44}
45