TabHost Невозможно добавить вкладку

Question

Я хочу использовать с TabHost. , но его cannt успешно добавить вкладку. когда оно приезжает tabHost.addTab(tab1); it fallses. с NullPointerException

XML

<TabHost 
     android:id="@+id/tabHost" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:layout_marginBottom="0dp" 
     android:layout_marginLeft="20dp" 
     android:layout_marginRight="20dp" 
     android:layout_weight="0.2"> 

     <LinearLayout 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:orientation="vertical"> 

      <TabWidget 
       android:id="@android:id/tabs" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content"></TabWidget> 

      <FrameLayout 
       android:id="@android:id/tabcontent" 
       android:layout_width="match_parent" 
       android:layout_height="fill_parent"></FrameLayout> 
     </LinearLayout> 
    </TabHost> 

JAVA

package abc.trempital.Activities; 

import android.os.Bundle; 
import android.support.v7.app.ActionBarActivity; 
import android.widget.TabHost; 
import android.content.Intent; 
import android.widget.TabHost.TabSpec; 
import abc.trempital.R; 

public class MainActivity extends ActionBarActivity { 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     TabHost tabHost = (TabHost) findViewById(R.id.tabHost); 

     TabSpec tab1 = tabHost.newTabSpec("First Tab"); 
     TabSpec tab2 = tabHost.newTabSpec("Second Tab"); 


     tab1.setIndicator("first"); 
     tab1.setContent(new Intent(this, SuggestsTabActivity.class)); 

     tab2.setIndicator("second"); 
     tab2.setContent(new Intent(this, WantedsTabActivity.class)); 


     tabHost.addTab(tab1); 
     tabHost.addTab(tab2); 
    } 
} 

ОШИБКА

06-02 13:00:22.657 15890-15890/? E/AndroidRuntime: FATAL EXCEPTION: main 
               Process: abc.button, PID: 15890 
               java.lang.RuntimeException: Unable to start activity ComponentInfo{abc.button/abc.trempital.Activities.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TabWidget.addView(android.view.View)' on a null object reference 
                at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416) 
                at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
                at android.app.ActivityThread.-wrap11(ActivityThread.java) 
                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
                at android.os.Handler.dispatchMessage(Handler.java:102) 
                at android.os.Looper.loop(Looper.java:148) 
                at android.app.ActivityThread.main(ActivityThread.java:5417) 
                at java.lang.reflect.Method.invoke(Native Method) 
                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 
               Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TabWidget.addView(android.view.View)' on a null object reference 
                at android.widget.TabHost.addTab(TabHost.java:218) 
                at abc.trempital.Activities.MainActivity.onCreate(MainActivity.java:30) 
                at android.app.Activity.performCreate(Activity.java:6237) 
                at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) 
                at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) 
                at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)  
                at android.app.ActivityThread.-wrap11(ActivityThread.java)  
                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)  
                at android.os.Handler.dispatchMessage(Handler.java:102)  
                at android.os.Looper.loop(Looper.java:148)  
                at android.app.ActivityThread.main(ActivityThread.java:5417)  
                at java.lang.reflect.Method.invoke(Native Method)  
                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)  
                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)  

Answer 1

Попробуйте this example с официальных сайтов Andorid.

Answer 2

TabHost очень старый, используйте TabLayout вместо https://developer.android.com/reference/android/support/design/widget/TabLayout.html