1/*
2 * Copyright (C) 2016 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.support.v4.widget;
18
19import android.os.Build;
20import android.support.annotation.NonNull;
21import android.widget.ListView;
22
23/**
24 * Helper for accessing features in {@link ListView} introduced after API level
25 * 4 in a backwards compatible fashion.
26 */
27public final class ListViewCompat {
28
29    /**
30     * Scrolls the list items within the view by a specified number of pixels.
31     *
32     * @param listView the list to scroll
33     * @param y the amount of pixels to scroll by vertically
34     */
35    public static void scrollListBy(@NonNull ListView listView, int y) {
36        if (Build.VERSION.SDK_INT >= 19) {
37            ListViewCompatKitKat.scrollListBy(listView, y);
38        } else {
39            ListViewCompatGingerbread.scrollListBy(listView, y);
40        }
41    }
42
43    private ListViewCompat() {}
44}
45