1/*
2 * Copyright (C) 2012 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 com.example.android.support.appnavigation.app;
18
19import android.app.Activity;
20import android.os.Build;
21
22/**
23 * Very limited shim for enabling the action bar's up button on devices that support it.
24 */
25public class ActionBarCompat {
26    /**
27     * This class will only ever be loaded if the version check succeeds,
28     * keeping the verifier from rejecting the use of framework classes that
29     * don't exist on older platform versions.
30     */
31    static class ActionBarCompatImpl {
32        static void setDisplayHomeAsUpEnabled(Activity activity, boolean enable) {
33            activity.getActionBar().setDisplayHomeAsUpEnabled(enable);
34        }
35    }
36
37    public static void setDisplayHomeAsUpEnabled(Activity activity, boolean enable) {
38        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
39            ActionBarCompatImpl.setDisplayHomeAsUpEnabled(activity, enable);
40        }
41    }
42}
43