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.listview;
18 
19 import android.widget.TextView;
20 import android.util.ListScenario;
21 
22 /**
23  * The header text view echos the value of the selected item by using (indirectly)
24  * the {@link android.widget.AdapterView.OnItemSelectedListener}.
25  */
26 public class ListWithOnItemSelectedAction extends ListScenario {
init(Params params)27     protected void init(Params params) {
28         params.setNumItems(8)
29                 .setItemScreenSizeFactor(0.2)
30                 .includeHeaderAboveList(true);
31 
32     }
33 
34     @Override
positionSelected(int positon)35     protected void positionSelected(int positon) {
36         if (positon != getListView().getSelectedItemPosition()) {
37             throw new IllegalStateException("something is fishy... the selected postion does not " +
38                     "match what the list reports.");
39         }
40         setHeaderValue(
41                 ((TextView) getListView().getSelectedView()).getText().toString());
42 
43     }
44 }
45