1
2Android HorizontalPaging Sample
3===================================
4
5This sample shows how to implement tabs, using Fragments and a ViewPager.
6
7Introduction
8------------
9
10This sample implements tabs using the deprecated [ActionBar.TabListener][1]. It uses [ViewPager][2] and
11[FragmentPagerAdapter][3] to handle swiping between tabs and displaying the selected tab content.
12
13
141. Create an Activity that extends [FragmentActivity][4], with a [ViewPager][2] for its layout.
152. Implement [ActionBar.TabListener][1] interface.
163. Create a class that extends [FragmentPagerAdapter][3] and override its `getItem(int position)`,
17`getCount()` and `getPageTitle(int position)` methods.
184. In the `onCreate(Bundle savedInstanceState)` method of your activity, set navigation mode to tabs for the
19ActionBar using `setNavigationMode(ActionBar.NAVIGATION_MODE_TABS)`. Note: This is DEPRECATED as of Android
20Lollipop.
215. Set your custom [FragmentPagerAdapter][3] on your [ViewPager][2].
226. Implement `setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener())` on your [ViewPager][2] to
23know the selected tab, so you can update your ActionBar with `setSelectedNavigationItem(position)`.
24
25[1]: http://developer.android.com/reference/android/support/v7/app/ActionBar.TabListener.html
26[2]: http://developer.android.com/reference/android/support/v4/view/ViewPager.html
27[3]: http://developer.android.com/reference/android/support/v4/app/FragmentPagerAdapter.html
28[4]: http://developer.android.com/reference/android/support/v4/app/FragmentActivity.html
29
30Pre-requisites
31--------------
32
33- Android SDK 28
34- Android Build Tools v28.0.3
35- Android Support Repository
36
37Screenshots
38-------------
39
40<img src="screenshots/1-tab1.png" height="400" alt="Screenshot"/> <img src="screenshots/2-tab2.png" height="400" alt="Screenshot"/>
41
42Getting Started
43---------------
44
45This sample uses the Gradle build system. To build this project, use the
46"gradlew build" command or use "Import Project" in Android Studio.
47
48Support
49-------
50
51- Google+ Community: https://plus.google.com/communities/105153134372062985968
52- Stack Overflow: http://stackoverflow.com/questions/tagged/android
53
54If you've found an error in this sample, please file an issue:
55https://github.com/googlesamples/android-HorizontalPaging
56
57Patches are encouraged, and may be submitted by forking this project and
58submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
59
60License
61-------
62
63Copyright 2019 The Android Open Source Project, Inc.
64
65Licensed to the Apache Software Foundation (ASF) under one or more contributor
66license agreements.  See the NOTICE file distributed with this work for
67additional information regarding copyright ownership.  The ASF licenses this
68file to you under the Apache License, Version 2.0 (the "License"); you may not
69use this file except in compliance with the License.  You may obtain a copy of
70the License at
71
72http://www.apache.org/licenses/LICENSE-2.0
73
74Unless required by applicable law or agreed to in writing, software
75distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
76WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
77License for the specific language governing permissions and limitations under
78the License.
79