1<?xml version="1.0" encoding="UTF-8"?>
2<!--
3 Copyright 2017 The Android Open Source Project
4
5 Licensed under the Apache License, Version 2.0 (the "License");
6 you may not use this file except in compliance with the License.
7 You may obtain a copy of the License at
8
9     http://www.apache.org/licenses/LICENSE-2.0
10
11 Unless required by applicable law or agreed to in writing, software
12 distributed under the License is distributed on an "AS IS" BASIS,
13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 See the License for the specific language governing permissions and
15 limitations under the License.
16-->
17<sample>
18    <name>EffectiveNavigation</name>
19    <group>UI</group>
20    <package>com.example.android.effectivenavigation</package>
21
22    <!-- change minSdk if needed-->
23    <minSdk>9</minSdk>
24
25    <strings>
26        <intro>
27            <![CDATA[
28This sample demonstrates how to create swipe views with tabs. Users can swipe
29between tabs, or click on a tab title to jump to the section. Some tabs are
30scrollable, meaning that users can scroll horizontally through the tab strip and
31select a tab.
32]]>
33        </intro>
34        <sample_action>Effective Navigation</sample_action>
35    </strings>
36
37    <metadata>
38        <status>PUBLISHED</status>
39        <categories>UI</categories>
40        <technologies>Android</technologies>
41        <languages>Java</languages>
42        <solutions>Mobile</solutions>
43        <level>BEGINNER</level>
44        <icon>screenshots/icon-web.png</icon>
45        <screenshots>
46            <img>screenshots/1-main.png</img>
47            <img>screenshots/2-collection.png</img>
48        </screenshots>
49        <api_refs>
50            <android>android.support.v4.view.ViewPager</android>
51            <android>android.support.design.widget.TabLayout</android>
52            <android>android.support.v4.app.NavUtils</android>
53        </api_refs>
54        <description>
55            <![CDATA[
56This sample demonstrates how to create swipe views with tabs. Users can swipe
57between tabs, or click on a tab title to jump to the section. Some tabs are
58scrollable, meaning that users can scroll horizontally through the tab strip and
59select a tab.
60]]>
61        </description>
62        <intro>
63            <![CDATA[
64This sample use combination of [ViewPager][1] and [TabLayout][2] to create swipe
65views with tabs.
66
67In order to use ViewPager, you first need to implement a PagerAdapter to feed
68its content. In this sample, we use [FragmentPagerAdapter][3] and
69[FragmentStatePagerAdapter][4]. FragmentPagerAdapter is useful when you have a
70limited number of fixed pages. FragmentStatePagerAdapter can be used for
71ViewPager with a lot of pages as it can save and restore state of Fragments
72inside of it in a memory-efficient way.
73
74Using TabLayout with ViewPager is simple. Just call the method
75[setupWithViewPager(ViewPager)][5], and the TabLayout generates corresponding
76tabs for the ViewPager. The titles are populated from [getPageTitle(int)][6]
77method of your ViewPager adapter.
78
79[1]: https://developer.android.com/reference/android/support/v4/view/ViewPager.html
80[2]: https://developer.android.com/reference/android/support/design/widget/TabLayout.html
81[3]: https://developer.android.com/reference/android/support/v4/app/FragmentPagerAdapter.html
82[4]: https://developer.android.com/reference/android/support/v4/app/FragmentStatePagerAdapter.html
83[5]: https://developer.android.com/reference/android/support/design/widget/TabLayout.html#setupWithViewPager(android.support.v4.view.ViewPager)
84[6]: https://developer.android.com/reference/android/support/v4/view/PagerAdapter.html#getPageTitle(int)
85]]>
86        </intro>
87    </metadata>
88</sample>
89