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 android.widget;
18 
19 import android.view.View;
20 import 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  */
29 public 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      */
getDropDownView(int position, View convertView, ViewGroup parent)43     public View getDropDownView(int position, View convertView, ViewGroup parent);
44 }
45