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copied!<p>Ugh, you just need to use the FragmentPagerAdapter from the V13 support library</p> <pre><code>Android.Support.V13.App.FragmentPagerAdapter </code></pre> <p>Then all other Fragment related classes can be used from the "normal" libraries/namespaces, with the exception of ViewPager, but that's no big deal.</p> <hr> <p>Here's a sample for completeness (modified "Support4" example from <a href="https://github.com/xamarin/monodroid-samples/">https://github.com/xamarin/monodroid-samples/</a>):</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Text; using Android.App; using Android.Content; using Android.OS; using Android.Runtime; using Android.Util; using Android.Views; using Android.Widget; using Java.Lang; using Android.Support.V4.View; using Fragment = Android.App.Fragment; namespace Support4 { [Activity (Label = "@string/fragment_pager_support")] [IntentFilter (new[]{Intent.ActionMain}, Categories = new[]{ "mono.support4demo.sample" })] public class FragmentPagerSupport : Activity //public class FragmentPagerSupport : FragmentActivity { const int NUM_ITEMS = 4; protected MyAdapter _pagerAdapter; protected ViewPager _viewPager; protected override void OnCreate (Bundle bundle) { base.OnCreate (bundle); SetContentView(Resource.Layout.fragment_pager); List<Fragment> fragments = new List<Fragment>(); // *** MonoDroid 4.2.7 letter case bug *** make's first letter lower. //string typeName = typeof(Fragment1).FullName; string typeName = "support4." + typeof(Fragment1).Name; fragments.Add(Fragment.Instantiate(this, typeName)); fragments.Add(Fragment.Instantiate(this, typeName)); fragments.Add(Fragment.Instantiate(this, typeName)); fragments.Add(Fragment.Instantiate(this, typeName)); //adapter = new MyAdapter(SupportFragmentManager); _pagerAdapter = new MyAdapter(FragmentManager, fragments); _viewPager = FindViewById<ViewPager>(Resource.Id.view_pager); _viewPager.Adapter = _pagerAdapter; } public override bool OnTouchEvent(MotionEvent e) { return base.OnTouchEvent(e); } protected class MyAdapter : Android.Support.V13.App.FragmentPagerAdapter { private List<Fragment> _fragments; public override Java.Lang.Object InstantiateItem(View p0, int p1) { return base.InstantiateItem(p0, p1); } public MyAdapter(Android.App.FragmentManager fm) : base(fm) { } //public MyAdapter(Android.Support.V4.App.FragmentManager fm, List<Android.Support.V4.App.Fragment> fragments) // : base(fm) public MyAdapter(FragmentManager fm, List<Fragment> fragments) : base(fm) { _fragments = fragments; } public override int Count { get { return NUM_ITEMS; } } //public override Android.Support.V4.App.Fragment GetItem(int p0) public override Fragment GetItem(int p0) { return _fragments[p0]; } public override float GetPageWidth(int p0) { //return base.GetPageWidth(p0); //base.GetPageWidth(p0); return (float)(0.5f); } } } //public class Fragment1 : Android.Support.V4.App.Fragment public class Fragment1 : Fragment { int num; private static int _colorIndex = 0; private static Android.Graphics.Color[] _colors = new[] { Android.Graphics.Color.Aqua, Android.Graphics.Color.DarkViolet, Android.Graphics.Color.Coral, Android.Graphics.Color.Bisque}; public Fragment1() { } public Fragment1(int num) { var args = new Bundle(); args.PutInt("num", num); Arguments = args; } public override void OnCreate(Bundle p0) { base.OnCreate(p0); num = Arguments != null ? Arguments.GetInt("num") : 1; } public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View v = inflater.Inflate(Resource.Layout.aaaaa, container, false); TextView tv = v.FindViewById<TextView>(Resource.Id.text); tv.Text = "# " + _colorIndex; tv.SetBackgroundColor(_colors[_colorIndex++]); return v; } public override void OnActivityCreated(Bundle p0) { base.OnActivityCreated(p0); } } } </code></pre> <hr> <pre><code><?xml version="1.0" encoding="utf-8"?>   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:padding="4dip" android:layout_width="match_parent" android:layout_height="match_parent">  <android.support.v4.view.ViewPager android:id="@+id/view_pager" android:layout_width="700dip" android:layout_height="match_parent" android:layout_weight="1" android:background="#FFCCFFFF">  </android.support.v4.view.ViewPager> </LinearLayout> </code></pre> <hr> <pre><code><?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/screen_container" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:id="@+id/text" android:layout_width="match_parent" android:layout_height="match_parent" android:gravity="center_vertical|center_horizontal" android:textAppearance="?android:attr/textAppearanceMedium" android:text="@string/hello_world" android:background="#FF335555"/> </LinearLayout> </code></pre>

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