Android viewpager ne s'affiche pas?

Question

J'ai cette mise en page

<?xml version="1.0" encoding="utf-8"?> 
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent"> 
    <RelativeLayout 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"> 
     <ImageView 
      android:id="@+id/header_cover_image" 
      android:layout_width="match_parent" 
      android:layout_height="150dp" 
      android:scaleType="centerCrop" 
      android:background="@color/com_facebook_button_background_color_pressed" /> 
     <refractored.controls.CircleImageView 
      android:id="@+id/imageProfile" 
      android:layout_width="120dp" 
      android:layout_height="120dp" 
      android:layout_below="@+id/header_cover_image" 
      android:layout_centerHorizontal="true" 
      android:layout_marginTop="-60dp" 
      android:layout_gravity="center_horizontal" 
      android:elevation="5dp" 
      android:padding="20dp" 
      android:scaleType="centerCrop" /> 
     <RelativeLayout 
      android:id="@+id/profile_layout" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/header_cover_image" 
      android:background="#ebca0707" 
      android:elevation="4dp" 
      android:paddingBottom="24dp"> 
      <ImageView 
       android:id="@+id/add_friend" 
       android:layout_width="30dp" 
       android:layout_height="30dp" 
       android:layout_marginLeft="16dp" 
       android:layout_marginTop="16dp" 
       android:src="@drawable/played" /> 
      <ImageView 
       android:id="@+id/drop_down_option_menu" 
       android:layout_height="30dp" 
       android:layout_alignParentRight="true" 
       android:src="@drawable/wins" 
       android:layout_width="30dp" 
       android:layout_toLeftOf="@+id/drop_down_option_menu" 
       android:layout_marginRight="16dp" 
       android:layout_marginTop="16dp" /> 
      <TextView 
       android:id="@+id/user_name" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:layout_centerHorizontal="true" 
       android:layout_marginTop="76dp" 
       android:textColor="#fff" 
       android:textSize="24sp" 
       android:textStyle="bold" /> 
      <TextView 
       android:id="@+id/userStatus" 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:layout_below="@+id/user_name" 
       android:text="Status" 
       android:textColor="#fff" 
       android:textSize="14sp" 
       android:layout_marginLeft="16dp" 
       android:layout_marginTop="15dp" 
       android:layout_centerHorizontal="true" /> 
     </RelativeLayout> 

    <LinearLayout 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:orientation="vertical" 
     android:id="@+id/profilePager" 
     > 

     <android.support.design.widget.TabLayout 
      android:id="@+id/tab_layout" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:layout_below="@+id/profile_layout" 
      android:elevation="6dp" 
      android:background="?android:attr/colorPrimary"/> 

     <android.support.v4.view.ViewPager 
       android:id="@+id/pager" 
       android:layout_below="@+id/tab_layout" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" /> 
     </LinearLayout> 
    </RelativeLayout> 

</ScrollView> 

La dernière LinearLayout montre les onglets, mais quand je les changer, il n'y a pas de données viewpager que ce soit. J'ai essayé de créer une autre disposition pour la tablayout, mais il ne sera pas encore du travail .. Im appeler ceci d'un fragment comme suit:

public class ProfileFragment : Fragment 
    { 
     private static Context _context; 
     private static Xamarin.Facebook.Profile _profile; 
     private CircleImageView imgProfile; 
     private TextView userName; 
     private TabLayout tabLayout; 
     private ViewPager viewpager; 
     public override void OnCreate(Bundle savedInstanceState) 
     { 
      base.OnCreate(savedInstanceState); 

      // Create your fragment here 
     } 

     public static Fragment NewInstance(Activity context , Xamarin.Facebook.Profile profile) 
     { 
      _context = context; 
      _profile = profile; 
      Fragment fragment = new ProfileFragment(); 
      return fragment; 
     } 
     public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) 
     { 

      View view = inflater.Inflate(Resource.Layout.fragmentProfile, container, false); 
      imgProfile = view.FindViewById<CircleImageView>(Resource.Id.imageProfile); 
      tabLayout =view.FindViewById<TabLayout>(Resource.Id.tab_layout); 
      viewpager = view.FindViewById<ViewPager>(Resource.Id.pager); 
      userName = view.FindViewById<TextView>(Resource.Id.user_name); 
      userName.Text = _profile.Name; 
      Picasso.With(_context).Load(_profile.GetProfilePictureUri(180, 180)).Into(imgProfile); 

      FnInitTabLayout(); 

      return view; 
     } 

     void FnInitTabLayout() 
     { 
      tabLayout.SetTabTextColors(Android.Graphics.Color.Aqua, Android.Graphics.Color.AntiqueWhite); 
      //Fragment array 
      var fragments = new Fragment[] 
      { 
       new ActivityFragment(), 
       new SportsFragment(), 
       new AboutFragment() 
      }; 
      //Tab title array 
      var titles = CharSequence.ArrayFromStringArray(new[] { 
       "Feed", 
       "Sports", 
       "About", 
      }); 

      //viewpager holding fragment array and tab title text 
      viewpager.Adapter = new ProileTabsAdapter(FragmentManager, fragments, titles); 
      tabLayout.SetupWithViewPager(viewpager); 
     } 

    } 

Quand je l'ai mis dans une activité et sans la mise en page ci-dessus que l'onglet et la viewpager ils fonctionne parfaitement mais dans ce scénario pas. Quelqu'un peut-il penser à ce que je fais mal?

EDIT:

Voici l'adaptateur pager

public class ProileTabsAdapter : FragmentPagerAdapter 
    { 
     private readonly Fragment[] fragments; 

     private readonly ICharSequence[] titles; 

     public ProileTabsAdapter(FragmentManager fm, Fragment[] fragments, ICharSequence[] titles) : base(fm) 
     { 
      this.fragments = fragments; 
      this.titles = titles; 
     } 
     public override int Count 
     { 
      get 
      { 
       return fragments.Length; 
      } 
     } 

     public override Fragment GetItem(int position) 
     { 
      return fragments[position]; 
     } 

     public override ICharSequence GetPageTitleFormatted(int position) 
     { 
      return titles[position]; 
     } 
    } 

Answer 1

Utilisez android:fillViewport="true" dans votre ScrollView.
wrap_content du téléavertisseur ne fonctionnera pas à l'intérieur Scrollview.

Answer 2

ViewPager ne supporte pas width="wrap_content" ou height="wrap_content" attrs.

Solutions ici: I am unable to have ViewPager WRAP_CONTENT

Vous pouvez également utiliser cette bibliothèque: WCViewPager (W rap C ontenu ViewPager)