1/*
2 * Copyright 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.tabcompat.lib;
18
19import com.example.android.tabcompat.lib.TabHelper;
20
21import android.os.Bundle;
22import android.support.v4.app.FragmentActivity;
23
24/**
25 * A base activity that defers tab functionality to a {@link TabHelper}.
26 *
27 * When building an activity with tabs, extend this class in order to provide compatibility with API
28 * level 5 and above. Using this class along with the {@link TabHelper} and {@link com.example.android.tabcompat.lib.CompatTab}
29 * classes, you can build a tab UI that's built using the {@link android.app.ActionBar} on
30 * Honeycomb+ and the {@link android.widget.TabWidget} on all older versions.
31 *
32 * The {@link TabHelper} APIs obfuscate all the compatibility work for you.
33 */
34public abstract class TabCompatActivity extends FragmentActivity {
35
36    TabHelper mTabHelper;
37
38    @Override
39    protected void onCreate(Bundle savedInstanceState) {
40        super.onCreate(savedInstanceState);
41        mTabHelper = TabHelper.createInstance(this);
42    }
43
44    @Override
45    protected void onSaveInstanceState(Bundle outState) {
46        super.onSaveInstanceState(outState);
47        mTabHelper.onSaveInstanceState(outState);
48    }
49
50    @Override
51    protected void onRestoreInstanceState(Bundle savedInstanceState) {
52        super.onRestoreInstanceState(savedInstanceState);
53        mTabHelper.onRestoreInstanceState(savedInstanceState);
54    }
55
56    /**
57     * Returns the {@link TabHelper} for this activity.
58     */
59    protected TabHelper getTabHelper() {
60        mTabHelper.setUp();
61        return mTabHelper;
62    }
63}
64