C# Android: Fehlerklasse kann nicht mehrere Basisklassen haben: 'Android.Support.V7.App.ActionBarActivity' und 'TabHostAct'

Question

Ich versuche, zwei Aktivitäten innerhalb einer Klasse zu erweitern. Ich weiß es nicht möglich ist, ich habe versucht, zwei verschiedene Klassen wie diese zu machen:

[Activity(Label = "DLS", Theme = "@style/MyTheme", ScreenOrientation = Android.Content.PM.ScreenOrientation.Portrait)] 
public class ActProduct : ActionBarActivity, TabHostAct 
{ 
     base.OnCreate(savedInstanceState); 

     // Create your application here 
     SetContentView(Resource.Layout.layProduct); 

     mToolbar = FindViewById<SupportToolbar>(Resource.Id.toolbar); 
     mDrawerLayout = FindViewById<DrawerLayout>(Resource.Id.drawer_layout); 
     mLeftDrawer = FindViewById<ListView>(Resource.Id.left_drawer); 

     mLeftDrawer.Tag = 0; 

     SetSupportActionBar(mToolbar); 

     mLeftDataSet = new List<string>(); 
     mLeftDataSet.Add("Login"); 
     mLeftDataSet.Add("Camera"); 
     mLeftDataSet.Add("Maps"); 
     mLeftDataSet.Add("Product"); 
     mLeftAdapter = new ArrayAdapter<string>(this, Android.Resource.Layout.SimpleListItem1, mLeftDataSet); 
     mLeftDrawer.Adapter = mLeftAdapter; 
     mLeftDrawer.ItemClick += MenuListView_ItemClick; 

     mDrawerToggle = new MyActionBarDrawerToggle(
      this,       //Host Activity 
      mDrawerLayout,     //DrawerLayout 
      Resource.String.openDrawer,  //Opened Message 
      Resource.String.closeDrawer  //Closed Message 
     ); 

     mDrawerLayout.SetDrawerListener(mDrawerToggle); 
     SupportActionBar.SetHomeButtonEnabled(true); 
     SupportActionBar.SetDisplayShowTitleEnabled(true); 
     mDrawerToggle.SyncState(); 
} 

public class TabHostAct : TabActivity 
{ 
    protected override void OnCreate(Bundle savedInstanceState) 
    { 
     base.OnCreate(savedInstanceState); 
     CreateTab(typeof(ActProProduk), "Prod", "Product", Resource.Drawable.ic_tab_product); 
     CreateTab(typeof(ActProCustomer), "Cust", "Customer", Resource.Drawable.ic_tab_customer); 
     CreateTab(typeof(ActProPromo), "Promo", "Promotion", Resource.Drawable.ic_tab_promo); 
    } 

    private void CreateTab(Type activityType, string tag, string label, int drawableId) 
    { 
     var intent = new Intent(this, activityType); 
     intent.AddFlags(ActivityFlags.NewTask); 

     var spec = TabHost.NewTabSpec(tag); 
     var drawableIcon = Resources.GetDrawable(drawableId); 
     spec.SetIndicator(label, drawableIcon); 
     spec.SetContent(intent); 

     TabHost.AddTab(spec); 
    } 
} 

Hier ist mein .axml Layout:

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:app="http://schemas.android.com/apk/res-auto" 
    android:orientation="vertical" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent"> 
    <android.support.v7.widget.Toolbar 
     android:id="@+id/toolbar" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:minHeight="?attr/actionBarSize" 
     android:background="?attr/colorPrimary" 
     app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" 
     app:popupTheme="@style/ThemeOverlay.AppCompat.Dark" /> 
    <android.support.v4.widget.DrawerLayout 
     android:id="@+id/drawer_layout" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent"> 
    <!-- The Main Content View --> 
     <FrameLayout 
      android:id="@+id/main" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" /> 
     <LinearLayout 
      android:orientation="vertical" 
      android:layout_width="wrap_content" 
      android:layout_height="wrap_content"> 
      <LinearLayout 
       android:orientation="horizontal" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_marginRight="25dp" 
       android:layout_marginLeft="25dp"> 
       <TabHost 
        android:id="@android:id/tabhost" 
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent"> 
        <LinearLayout 
         android:orientation="vertical" 
         android:layout_width="fill_parent" 
         android:layout_height="fill_parent" 
         android:padding="5dp"> 
         <TabWidget 
          android:id="@android:id/tabs" 
          android:layout_width="fill_parent" 
          android:layout_height="wrap_content" /> 
         <FrameLayout 
          android:id="@android:id/tabcontent" 
          android:layout_width="fill_parent" 
          android:layout_height="fill_parent" 
          android:padding="5dp" /> 
        </LinearLayout> 
       </TabHost> 
      </LinearLayout> 
     </LinearLayout> 
    <!-- The Left Navigation Drawer --> 
     <ListView 
      android:id="@+id/left_drawer" 
      android:layout_width="240dp" 
      android:layout_height="match_parent" 
      android:layout_gravity="start" 
      android:choiceMode="singleChoice" 
      android:divider="#818181" 
      android:dividerHeight="1dp" 
      android:background="#E3F2FD" /> 
    </android.support.v4.widget.DrawerLayout> 
</LinearLayout> 

gibt es eine Lösung für mein Problem? Vielen Dank im Voraus.

Answer 1

Verwenden Sie nicht TabActivity. Fügen Sie stattdessen ein TabHost in Ihrem Layout ein.