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android / platform / tools / dokka-devsite-plugin / 9c09705e94665fe98274aed3547b89579188d4b3 / . / testData / fragment / docs / reference / kotlin / androidx / fragment / app / FragmentPagerAdapter.html
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<html devsite="true">
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<title>FragmentPagerAdapter</title>
{% setvar book_path %}/reference/kotlin/androidx/_book.yaml{% endsetvar %}
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<div itemscope="" itemtype="http://developers.google.com/ReferenceObject">
<meta itemprop="name" content="FragmentPagerAdapter">
<meta itemprop="path" content="androidx.fragment.app">
<meta itemprop="property" content="destroyItem(android.view.ViewGroup,int,java.lang.Object)">
<meta itemprop="property" content="finishUpdate(android.view.ViewGroup)">
<meta itemprop="property" content="getItem(int)">
<meta itemprop="property" content="getItemId(int)">
<meta itemprop="property" content="instantiateItem(android.view.ViewGroup,int)">
<meta itemprop="property" content="isViewFromObject(android.view.View,java.lang.Object)">
<meta itemprop="property" content="restoreState(android.os.Parcelable,java.lang.ClassLoader)">
<meta itemprop="property" content="saveState()">
<meta itemprop="property" content="setPrimaryItem(android.view.ViewGroup,int,java.lang.Object)">
<meta itemprop="property" content="startUpdate(android.view.ViewGroup)">
<meta itemprop="property" content="BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT()">
<meta itemprop="property" content="BEHAVIOR_SET_USER_VISIBLE_HINT()">
<meta itemprop="language" content="KOTLIN">
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<div>
<h1>FragmentPagerAdapter</h1>
</div>
<div id="metadata-info-block">
<div id="source-link"><a href="https://cs.android.com/search?q=file:androidx/fragment/app/FragmentPagerAdapter.java+class:androidx.fragment.app.FragmentPagerAdapter&amp;ss=androidx/platform/frameworks/support" class="external">View Source</a></div>
<div id="version-metadata">
<div id="added-in">Added in 1.1.0</div>
<div id="deprecated-in">Deprecated in 1.3.0</div>
</div>
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<p>
<pre>abstract class <a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html">FragmentPagerAdapter</a> : <a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html">PagerAdapter</a></pre>
</p>
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<table class="jd-inheritance-table">
<tbody>
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<td colspan="3"><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html">kotlin.Any</a></td>
</tr>
<tr>
<td class="jd-inheritance-space">&nbsp;&nbsp;&nbsp;↳</td>
<td colspan="2"><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html">androidx.viewpager.widget.PagerAdapter</a></td>
</tr>
<tr>
<td>&nbsp;</td>
<td class="jd-inheritance-space">&nbsp;&nbsp;&nbsp;↳</td>
<td colspan="1"><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html">androidx.fragment.app.FragmentPagerAdapter</a></td>
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</tbody>
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<hr>
<aside class="caution"><strong>This class is deprecated.</strong><br>
<p>Switch to androidx.viewpager2.widget.ViewPager2 and use androidx.viewpager2.adapter.FragmentStateAdapter instead.</p>
</aside>
<p>Implementation of <code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html">PagerAdapter</a></code> that represents each page as a <code><a href="/reference/kotlin/androidx/fragment/app/Fragment.html">Fragment</a></code> that is persistently kept in the fragment manager as long as the user can return to the page. </p>
<p>This version of the pager is best for use when there are a handful of typically more static fragments to be paged through, such as a set of tabs. The fragment of each page the user visits will be kept in memory, though its view hierarchy may be destroyed when not visible. This can result in using a significant amount of memory since fragment instances can hold on to an arbitrary amount of state. For larger sets of pages, consider <code><a href="/reference/kotlin/androidx/fragment/app/FragmentStatePagerAdapter.html">FragmentStatePagerAdapter</a></code>. </p>
<p>When using FragmentPagerAdapter the host ViewPager must have a valid ID set.</p>
<p>Subclasses only need to implement <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#getItem(int)">getItem</a></code> and <code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html#getCount()">getCount</a></code> to have a working adapter. </p>
Here is an example implementation of a pager containing fragments of lists:
<pre class="prettyprint lang-java">
public class FragmentPagerSupport extends FragmentActivity {
static final int NUM_ITEMS = 10;
MyAdapter mAdapter;
ViewPager mPager;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.fragment_pager);
mAdapter = new MyAdapter(getSupportFragmentManager());
mPager = (ViewPager)findViewById(R.id.pager);
mPager.setAdapter(mAdapter);
// Watch for button clicks.
Button button = (Button)findViewById(R.id.goto_first);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mPager.setCurrentItem(0);
}
});
button = (Button)findViewById(R.id.goto_last);
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
mPager.setCurrentItem(NUM_ITEMS-1);
}
});
}
public static class MyAdapter extends FragmentPagerAdapter {
public MyAdapter(FragmentManager fm) {
super(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT);
}
@Override
public int getCount() {
return NUM_ITEMS;
}
@Override
public Fragment getItem(int position) {
return ArrayListFragment.newInstance(position);
}
}
public static class ArrayListFragment extends ListFragment {
int mNum;
/**
* Create a new instance of CountingFragment, providing &quot;num&quot;
* as an argument.
*/
static ArrayListFragment newInstance(int num) {
ArrayListFragment f = new ArrayListFragment();
// Supply num input as an argument.
Bundle args = new Bundle();
args.putInt(&quot;num&quot;, num);
f.setArguments(args);
return f;
}
/**
* When creating, retrieve this instance's number from its arguments.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mNum = getArguments() != null ? getArguments().getInt(&quot;num&quot;) : 1;
}
/**
* The Fragment's UI is just a simple text view showing its
* instance number.
*/
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_pager_list, container, false);
View tv = v.findViewById(R.id.text);
((TextView)tv).setText(&quot;Fragment #&quot; + mNum);
return v;
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
setListAdapter(new ArrayAdapter&lt;String&gt;(getActivity(),
android.R.layout.simple_list_item_1, Cheeses.sCheeseStrings));
}
@Override
public void onListItemClick(ListView l, View v, int position, long id) {
Log.i(&quot;FragmentList&quot;, &quot;Item clicked: &quot; + id);
}
}
}
</pre>
The <code>R.layout.fragment_pager</code>resource of the top-level fragment is:
<pre class="prettyprint lang-xml">
&lt;LinearLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
android:orientation=&quot;vertical&quot; android:padding=&quot;4dip&quot;
android:gravity=&quot;center_horizontal&quot;
android:layout_width=&quot;match_parent&quot; android:layout_height=&quot;match_parent&quot;&gt;
&lt;androidx.viewpager.widget.ViewPager
android:id=&quot;@+id/pager&quot;
android:layout_width=&quot;match_parent&quot;
android:layout_height=&quot;0px&quot;
android:layout_weight=&quot;1&quot;&gt;
&lt;/androidx.viewpager.widget.ViewPager&gt;
&lt;LinearLayout android:orientation=&quot;horizontal&quot;
android:gravity=&quot;center&quot; android:measureWithLargestChild=&quot;true&quot;
android:layout_width=&quot;match_parent&quot; android:layout_height=&quot;wrap_content&quot;
android:layout_weight=&quot;0&quot;&gt;
&lt;Button android:id=&quot;@+id/goto_first&quot;
android:layout_width=&quot;wrap_content&quot; android:layout_height=&quot;wrap_content&quot;
android:text=&quot;@string/first&quot;&gt;
&lt;/Button&gt;
&lt;Button android:id=&quot;@+id/goto_last&quot;
android:layout_width=&quot;wrap_content&quot; android:layout_height=&quot;wrap_content&quot;
android:text=&quot;@string/last&quot;&gt;
&lt;/Button&gt;
&lt;/LinearLayout&gt;
&lt;/LinearLayout&gt;
</pre>
The <code>R.layout.fragment_pager_list</code>resource containing each individual fragment's layout is:
<pre class="prettyprint lang-xml">
&lt;LinearLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
android:orientation=&quot;vertical&quot;
android:layout_width=&quot;match_parent&quot;
android:layout_height=&quot;match_parent&quot;
android:background=&quot;@android:drawable/gallery_thumb&quot;&gt;
&lt;TextView android:id=&quot;@+id/text&quot;
android:layout_width=&quot;match_parent&quot; android:layout_height=&quot;wrap_content&quot;
android:gravity=&quot;center_vertical|center_horizontal&quot;
android:textAppearance=&quot;?android:attr/textAppearanceMedium&quot;
android:text=&quot;@string/hello_world&quot;/&gt;
&lt;!-- The frame layout is here since we will be showing either
the empty view or the list view. --&gt;
&lt;FrameLayout
android:layout_width=&quot;match_parent&quot;
android:layout_height=&quot;0dip&quot;
android:layout_weight=&quot;1&quot; &gt;
&lt;!-- Here is the list. Since we are using a ListActivity, we
have to call it &quot;@android:id/list&quot; so ListActivity will
find it --&gt;
&lt;ListView android:id=&quot;@android:id/list&quot;
android:layout_width=&quot;match_parent&quot;
android:layout_height=&quot;match_parent&quot;
android:drawSelectorOnTop=&quot;false&quot;/&gt;
&lt;!-- Here is the view to show if the list is empty --&gt;
&lt;TextView android:id=&quot;@android:id/empty&quot;
android:layout_width=&quot;match_parent&quot;
android:layout_height=&quot;match_parent&quot;
android:textAppearance=&quot;?android:attr/textAppearanceMedium&quot;
android:text=&quot;No items.&quot;/&gt;
&lt;/FrameLayout&gt;
&lt;/LinearLayout&gt;
</pre>
<h2>Summary</h2>
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<th colspan="100%"><h3>Constants</h3></th>
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<td><code>const <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT()">BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT</a> = 1</code></div>
<p>Indicates that only the current fragment will be in the <code><a href="/reference/kotlin/androidx/lifecycle/Lifecycle.State.RESUMED.html">RESUMED</a></code> state.</p>
</td>
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<td><code>const <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#BEHAVIOR_SET_USER_VISIBLE_HINT()">BEHAVIOR_SET_USER_VISIBLE_HINT</a> = 0</code></div>
<p><strong>This property is deprecated.</strong>
<p>This behavior relies on the deprecated <code><a href="/reference/kotlin/androidx/fragment/app/Fragment.html#setUserVisibleHint(boolean)">setUserVisibleHint</a></code> API.</p>
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<th colspan="100%"><h3>Public constructors</h3></th>
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<td>
<div><code><span><del><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#FragmentPagerAdapter(androidx.fragment.app.FragmentManager)">FragmentPagerAdapter</a></del></span>(fm:&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentManager.html">FragmentManager</a>)</code></div>
<p><strong>This function is deprecated.</strong>
<p>use <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#FragmentPagerAdapter(androidx.fragment.app.FragmentManager,int)">FragmentPagerAdapter</a></code> with <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT()">BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT</a></code></p>
</p>
</td>
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<tr>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#FragmentPagerAdapter(androidx.fragment.app.FragmentManager,int)">FragmentPagerAdapter</a>(fm:&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentManager.html">FragmentManager</a>,&nbsp;behavior:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>)</code></div>
<p>Constructor for <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html">FragmentPagerAdapter</a></code>.</p>
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<th colspan="100%"><h3>Public functions</h3></th>
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</thead>
<tbody class="list">
<tr>
<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#destroyItem(android.view.ViewGroup,int,java.lang.Object)">destroyItem</a>(container:&nbsp;<a href="https://developer.android.com/reference/android/view/ViewGroup.html">ViewGroup</a>,&nbsp;position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>,&nbsp;object:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html">Any</a>)</code></div>
</td>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#finishUpdate(android.view.ViewGroup)">finishUpdate</a>(container:&nbsp;<a href="https://developer.android.com/reference/android/view/ViewGroup.html">ViewGroup</a>)</code></div>
</td>
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<td><code>abstract <a href="/reference/kotlin/androidx/fragment/app/Fragment.html">Fragment</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#getItem(int)">getItem</a>(position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>)</code></div>
<p>Return the Fragment associated with a specified position.</p>
</td>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-long/index.html">Long</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#getItemId(int)">getItemId</a>(position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>)</code></div>
<p>Return a unique identifier for the item at the given position.</p>
</td>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html">Any</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#instantiateItem(android.view.ViewGroup,int)">instantiateItem</a>(container:&nbsp;<a href="https://developer.android.com/reference/android/view/ViewGroup.html">ViewGroup</a>,&nbsp;position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>)</code></div>
</td>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html">Boolean</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#isViewFromObject(android.view.View,java.lang.Object)">isViewFromObject</a>(view:&nbsp;<a href="https://developer.android.com/reference/android/view/View.html">View</a>,&nbsp;object:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html">Any</a>)</code></div>
</td>
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<tr>
<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#restoreState(android.os.Parcelable,java.lang.ClassLoader)">restoreState</a>(state:&nbsp;<a href="https://developer.android.com/reference/android/os/Parcelable.html">Parcelable</a>?,&nbsp;loader:&nbsp;<a href="https://developer.android.com/reference/java/lang/ClassLoader.html">ClassLoader</a>?)</code></div>
</td>
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<td><code><a href="https://developer.android.com/reference/android/os/Parcelable.html">Parcelable</a>?</code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#saveState()">saveState</a>()</code></div>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></code></td>
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<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#setPrimaryItem(android.view.ViewGroup,int,java.lang.Object)">setPrimaryItem</a>(container:&nbsp;<a href="https://developer.android.com/reference/android/view/ViewGroup.html">ViewGroup</a>,&nbsp;position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>,&nbsp;object:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html">Any</a>)</code></div>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#startUpdate(android.view.ViewGroup)">startUpdate</a>(container:&nbsp;<a href="https://developer.android.com/reference/android/view/ViewGroup.html">ViewGroup</a>)</code></div>
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<th colspan="100%"><h3>Inherited Constants</h3></th>
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<td><devsite-expandable><span class="expand-control">From <a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html">androidx.viewpager.widget.PagerAdapter</a></span>
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<td><code>const <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html#POSITION_NONE()">POSITION_NONE</a> = -2</code></div>
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<td><code>const <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html#POSITION_UNCHANGED()">POSITION_UNCHANGED</a> = -1</code></div>
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<th colspan="100%"><h3>Inherited functions</h3></th>
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<td><devsite-expandable><span class="expand-control">From <a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html">androidx.viewpager.widget.PagerAdapter</a></span>
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<td><code>abstract <a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html#getCount()">getCount</a>()</code></div>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a></code></td>
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<div><code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html#getItemPosition(java.lang.Object)">getItemPosition</a>(object:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html">Any</a>!)</code></div>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-char-sequence/index.html">CharSequence</a>!</code></td>
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<div><code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html#getPageTitle(int)">getPageTitle</a>(position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>)</code></div>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html">Float</a></code></td>
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<div><code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html#getPageWidth(int)">getPageWidth</a>(position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>)</code></div>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></code></td>
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<div><code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html#notifyDataSetChanged()">notifyDataSetChanged</a>()</code></div>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></code></td>
<td>
<div><code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html#registerDataSetObserver(android.database.DataSetObserver)">registerDataSetObserver</a>(observer:&nbsp;<a href="https://developer.android.com/reference/android/database/DataSetObserver.html">DataSetObserver</a>!)</code></div>
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<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></code></td>
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<div><code><a href="/reference/kotlin/androidx/viewpager/widget/PagerAdapter.html#unregisterDataSetObserver(android.database.DataSetObserver)">unregisterDataSetObserver</a>(observer:&nbsp;<a href="https://developer.android.com/reference/android/database/DataSetObserver.html">DataSetObserver</a>!)</code></div>
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<div class="list">
<h2>Constants</h2>
<div class="api-item"><a name="getBEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT()"></a><a name="setBEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT()"></a><a name="getBEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT--"></a><a name="setBEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT--"></a>
<div class="api-name-block">
<div>
<h3 id="BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT()">BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.1.0</div>
<div id="deprecated-in">Deprecated in 1.3.0</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">const&nbsp;val&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT()">BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT</a> = 1:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a></pre>
<p>Indicates that only the current fragment will be in the <code><a href="/reference/kotlin/androidx/lifecycle/Lifecycle.State.RESUMED.html">RESUMED</a></code> state. All other Fragments are capped at <code><a href="/reference/kotlin/androidx/lifecycle/Lifecycle.State.STARTED.html">STARTED</a></code>.</p>
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<colgroup>
<col width="40%">
<col>
</colgroup>
<thead>
<tr>
<th colspan="100%">See also</th>
</tr>
</thead>
<tbody class="list">
<tr>
<td><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#FragmentPagerAdapter(androidx.fragment.app.FragmentManager,int)">FragmentPagerAdapter</a></code></td>
<td></td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="api-item"><a name="getBEHAVIOR_SET_USER_VISIBLE_HINT()"></a><a name="setBEHAVIOR_SET_USER_VISIBLE_HINT()"></a><a name="getBEHAVIOR_SET_USER_VISIBLE_HINT--"></a><a name="setBEHAVIOR_SET_USER_VISIBLE_HINT--"></a>
<div class="api-name-block">
<div>
<h3 id="BEHAVIOR_SET_USER_VISIBLE_HINT()">BEHAVIOR_SET_USER_VISIBLE_HINT</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.1.0</div>
<div id="deprecated-in">Deprecated in 1.1.0</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">const&nbsp;val&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#BEHAVIOR_SET_USER_VISIBLE_HINT()">BEHAVIOR_SET_USER_VISIBLE_HINT</a> = 0:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a></pre>
<aside class="caution"><strong>This property is deprecated.</strong><br>
<p>This behavior relies on the deprecated <code><a href="/reference/kotlin/androidx/fragment/app/Fragment.html#setUserVisibleHint(boolean)">setUserVisibleHint</a></code> API. Use <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT()">BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT</a></code> to switch to its replacement, <code><a href="/reference/kotlin/androidx/fragment/app/FragmentTransaction.html#setMaxLifecycle(androidx.fragment.app.Fragment,androidx.lifecycle.Lifecycle.State)">setMaxLifecycle</a></code>.</p>
</aside>
<p>Indicates that <code><a href="/reference/kotlin/androidx/fragment/app/Fragment.html#setUserVisibleHint(boolean)">setUserVisibleHint</a></code> will be called when the current fragment changes.</p>
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<col width="40%">
<col>
</colgroup>
<thead>
<tr>
<th colspan="100%">See also</th>
</tr>
</thead>
<tbody class="list">
<tr>
<td><code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#FragmentPagerAdapter(androidx.fragment.app.FragmentManager,int)">FragmentPagerAdapter</a></code></td>
<td></td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div class="list">
<h2>Public constructors</h2>
<div class="api-item"><a name="FragmentPagerAdapter-androidx.fragment.app.FragmentManager-"></a><a name="fragmentpageradapter"></a>
<div class="api-name-block">
<div>
<h3 id="FragmentPagerAdapter(androidx.fragment.app.FragmentManager)">FragmentPagerAdapter</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.1.0</div>
<div id="deprecated-in">Deprecated in 1.1.0</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print"><span><del><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#FragmentPagerAdapter(androidx.fragment.app.FragmentManager)">FragmentPagerAdapter</a></del></span>(fm:&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentManager.html">FragmentManager</a>)</pre>
<aside class="caution"><strong>This function is deprecated.</strong><br>
<p>use <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#FragmentPagerAdapter(androidx.fragment.app.FragmentManager,int)">FragmentPagerAdapter</a></code> with <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT()">BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT</a></code></p>
</aside>
<p>Constructor for <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html">FragmentPagerAdapter</a></code> that sets the fragment manager for the adapter. This is the equivalent of calling <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#FragmentPagerAdapter(androidx.fragment.app.FragmentManager,int)">FragmentPagerAdapter</a></code> and passing in <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#BEHAVIOR_SET_USER_VISIBLE_HINT()">BEHAVIOR_SET_USER_VISIBLE_HINT</a></code>. </p>
<p>Fragments will have <code><a href="/reference/kotlin/androidx/fragment/app/Fragment.html#setUserVisibleHint(boolean)">setUserVisibleHint</a></code> called whenever the current Fragment changes.</p>
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<table class="responsive">
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<col width="40%">
<col>
</colgroup>
<thead>
<tr>
<th colspan="100%">Parameters</th>
</tr>
</thead>
<tbody class="list">
<tr>
<td><code>fm:&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentManager.html">FragmentManager</a></code></td>
<td>
<p>fragment manager that will interact with this adapter</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="api-item"><a name="FragmentPagerAdapter(androidx.fragment.app.FragmentManager, int)"></a><a name="FragmentPagerAdapter-androidx.fragment.app.FragmentManager-int-"></a><a name="fragmentpageradapter"></a>
<div class="api-name-block">
<div>
<h3 id="FragmentPagerAdapter(androidx.fragment.app.FragmentManager,int)">FragmentPagerAdapter</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.1.0</div>
<div id="deprecated-in">Deprecated in 1.3.0</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print"><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#FragmentPagerAdapter(androidx.fragment.app.FragmentManager,int)">FragmentPagerAdapter</a>(fm:&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentManager.html">FragmentManager</a>,&nbsp;behavior:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>)</pre>
<p>Constructor for <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html">FragmentPagerAdapter</a></code>. If <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT()">BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT</a></code> is passed in, then only the current Fragment is in the <code><a href="/reference/kotlin/androidx/lifecycle/Lifecycle.State.RESUMED.html">RESUMED</a></code> state. All other fragments are capped at <code><a href="/reference/kotlin/androidx/lifecycle/Lifecycle.State.STARTED.html">STARTED</a></code>. If <code><a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#BEHAVIOR_SET_USER_VISIBLE_HINT()">BEHAVIOR_SET_USER_VISIBLE_HINT</a></code> is passed, all fragments are in the <code><a href="/reference/kotlin/androidx/lifecycle/Lifecycle.State.RESUMED.html">RESUMED</a></code> state and there will be callbacks to <code><a href="/reference/kotlin/androidx/fragment/app/Fragment.html#setUserVisibleHint(boolean)">setUserVisibleHint</a></code>.</p>
<div class="devsite-table-wrapper">
<table class="responsive">
<colgroup>
<col width="40%">
<col>
</colgroup>
<thead>
<tr>
<th colspan="100%">Parameters</th>
</tr>
</thead>
<tbody class="list">
<tr>
<td><code>fm:&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentManager.html">FragmentManager</a></code></td>
<td>
<p>fragment manager that will interact with this adapter</p>
</td>
</tr>
<tr>
<td><code>behavior:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a></code></td>
<td>
<p>determines if only current fragments are in a resumed state</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div class="list">
<h2>Public functions</h2>
<div class="api-item"><a name="destroyItem(android.view.ViewGroup, int, java.lang.Object)"></a><a name="destroyItem-android.view.ViewGroup-int-java.lang.Object-"></a><a name="destroyitem"></a>
<div class="api-name-block">
<div>
<h3 id="destroyItem(android.view.ViewGroup,int,java.lang.Object)">destroyItem</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.7.0-alpha02</div>
<div id="deprecated-in">Deprecated in 1.7.0-alpha02</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">fun&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#destroyItem(android.view.ViewGroup,int,java.lang.Object)">destroyItem</a>(container:&nbsp;<a href="https://developer.android.com/reference/android/view/ViewGroup.html">ViewGroup</a>,&nbsp;position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>,&nbsp;object:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html">Any</a>):&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></pre>
</div>
<div class="api-item"><a name="finishUpdate-android.view.ViewGroup-"></a><a name="finishupdate"></a>
<div class="api-name-block">
<div>
<h3 id="finishUpdate(android.view.ViewGroup)">finishUpdate</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.7.0-alpha02</div>
<div id="deprecated-in">Deprecated in 1.7.0-alpha02</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">fun&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#finishUpdate(android.view.ViewGroup)">finishUpdate</a>(container:&nbsp;<a href="https://developer.android.com/reference/android/view/ViewGroup.html">ViewGroup</a>):&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></pre>
</div>
<div class="api-item"><a name="getItem-int-"></a><a name="getitem"></a>
<div class="api-name-block">
<div>
<h3 id="getItem(int)">getItem</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.1.0</div>
<div id="deprecated-in">Deprecated in 1.3.0</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">abstract&nbsp;fun&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#getItem(int)">getItem</a>(position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>):&nbsp;<a href="/reference/kotlin/androidx/fragment/app/Fragment.html">Fragment</a></pre>
<p>Return the Fragment associated with a specified position.</p>
</div>
<div class="api-item"><a name="getItemId-int-"></a><a name="getitemid"></a>
<div class="api-name-block">
<div>
<h3 id="getItemId(int)">getItemId</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.1.0</div>
<div id="deprecated-in">Deprecated in 1.3.0</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">fun&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#getItemId(int)">getItemId</a>(position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>):&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-long/index.html">Long</a></pre>
<p>Return a unique identifier for the item at the given position. </p>
<p>The default implementation returns the given position. Subclasses should override this method if the positions of items can change.</p>
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<table class="responsive">
<colgroup>
<col width="40%">
<col>
</colgroup>
<thead>
<tr>
<th colspan="100%">Parameters</th>
</tr>
</thead>
<tbody class="list">
<tr>
<td><code>position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a></code></td>
<td>
<p>Position within this adapter</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="devsite-table-wrapper">
<table class="responsive">
<colgroup>
<col width="40%">
<col>
</colgroup>
<thead>
<tr>
<th colspan="100%">Returns</th>
</tr>
</thead>
<tbody class="list">
<tr>
<td><code><a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-long/index.html">Long</a></code></td>
<td>
<p>Unique identifier for the item at position</p>
</td>
</tr>
</tbody>
</table>
</div>
</div>
<div class="api-item"><a name="instantiateItem(android.view.ViewGroup, int)"></a><a name="instantiateItem-android.view.ViewGroup-int-"></a><a name="instantiateitem"></a>
<div class="api-name-block">
<div>
<h3 id="instantiateItem(android.view.ViewGroup,int)">instantiateItem</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.7.0-alpha02</div>
<div id="deprecated-in">Deprecated in 1.7.0-alpha02</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">fun&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#instantiateItem(android.view.ViewGroup,int)">instantiateItem</a>(container:&nbsp;<a href="https://developer.android.com/reference/android/view/ViewGroup.html">ViewGroup</a>,&nbsp;position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>):&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html">Any</a></pre>
</div>
<div class="api-item"><a name="isViewFromObject(android.view.View, java.lang.Object)"></a><a name="isViewFromObject-android.view.View-java.lang.Object-"></a><a name="isviewfromobject"></a>
<div class="api-name-block">
<div>
<h3 id="isViewFromObject(android.view.View,java.lang.Object)">isViewFromObject</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.1.0</div>
<div id="deprecated-in">Deprecated in 1.3.0</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">fun&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#isViewFromObject(android.view.View,java.lang.Object)">isViewFromObject</a>(view:&nbsp;<a href="https://developer.android.com/reference/android/view/View.html">View</a>,&nbsp;object:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html">Any</a>):&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html">Boolean</a></pre>
</div>
<div class="api-item"><a name="restoreState(android.os.Parcelable, java.lang.ClassLoader)"></a><a name="restoreState-android.os.Parcelable-java.lang.ClassLoader-"></a><a name="restorestate"></a>
<div class="api-name-block">
<div>
<h3 id="restoreState(android.os.Parcelable,java.lang.ClassLoader)">restoreState</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.7.0-alpha02</div>
<div id="deprecated-in">Deprecated in 1.7.0-alpha02</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">fun&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#restoreState(android.os.Parcelable,java.lang.ClassLoader)">restoreState</a>(state:&nbsp;<a href="https://developer.android.com/reference/android/os/Parcelable.html">Parcelable</a>?,&nbsp;loader:&nbsp;<a href="https://developer.android.com/reference/java/lang/ClassLoader.html">ClassLoader</a>?):&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></pre>
</div>
<div class="api-item"><a name="saveState--"></a><a name="savestate"></a>
<div class="api-name-block">
<div>
<h3 id="saveState()">saveState</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.7.0-alpha02</div>
<div id="deprecated-in">Deprecated in 1.7.0-alpha02</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">fun&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#saveState()">saveState</a>():&nbsp;<a href="https://developer.android.com/reference/android/os/Parcelable.html">Parcelable</a>?</pre>
</div>
<div class="api-item"><a name="setPrimaryItem(android.view.ViewGroup, int, java.lang.Object)"></a><a name="setPrimaryItem-android.view.ViewGroup-int-java.lang.Object-"></a><a name="setprimaryitem"></a>
<div class="api-name-block">
<div>
<h3 id="setPrimaryItem(android.view.ViewGroup,int,java.lang.Object)">setPrimaryItem</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.7.0-alpha02</div>
<div id="deprecated-in">Deprecated in 1.7.0-alpha02</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">fun&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#setPrimaryItem(android.view.ViewGroup,int,java.lang.Object)">setPrimaryItem</a>(container:&nbsp;<a href="https://developer.android.com/reference/android/view/ViewGroup.html">ViewGroup</a>,&nbsp;position:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html">Int</a>,&nbsp;object:&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html">Any</a>):&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></pre>
</div>
<div class="api-item"><a name="startUpdate-android.view.ViewGroup-"></a><a name="startupdate"></a>
<div class="api-name-block">
<div>
<h3 id="startUpdate(android.view.ViewGroup)">startUpdate</h3>
</div>
<div id="metadata-info-block">
<div id="version-metadata">
<div id="added-in">Added in 1.7.0-alpha02</div>
<div id="deprecated-in">Deprecated in 1.7.0-alpha02</div>
</div>
</div>
</div>
<pre class="api-signature no-pretty-print">fun&nbsp;<a href="/reference/kotlin/androidx/fragment/app/FragmentPagerAdapter.html#startUpdate(android.view.ViewGroup)">startUpdate</a>(container:&nbsp;<a href="https://developer.android.com/reference/android/view/ViewGroup.html">ViewGroup</a>):&nbsp;<a href="https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html">Unit</a></pre>
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