java.lang.IllegalStateException ..... at tabhost.add（tabspec）;

嗨guyzz我有TabActivity如下簡單的代碼java.lang.IllegalStateException ..... at tabhost.add（tabspec）;

public class TabhostActivity extends Activity{ 
    TabHost host; 

    public class TabhostActivity extends Activity{ 
    TabHost host; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 

     setContentView(R.layout.tablayout); 

     host = (TabHost) findViewById(R.id.mytabhost); 

     host.setup(); 
     Intent intent = new Intent(getApplicationContext(), RatingBarActivity.class); 
     TabHost.TabSpec spec = host.newTabSpec("positions").setIndicator("Positions",getResources().getDrawable(R.drawable.add)).setContent(intent); 

     host.addTab(spec); 
     host.setCurrentTab(0); 

    }

，並有一個簡單的標籤佈局

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" > 

    <TabHost 
     android:id="@+id/mytabhost" 
     android:layout_width="match_parent" 
     android:layout_height="match_parent" 
     android:padding="5dp"> 

     <LinearLayout 
      android:id="@+id/linearLayout1" 
      android:layout_width="match_parent" 
      android:layout_height="match_parent" 
      android:orientation="vertical" 
      android:padding="5dp"> 

      <FrameLayout 
       android:id="@android:id/tabcontent" 
       android:layout_width="match_parent" 
       android:layout_height="match_parent" 
       android:layout_weight="1" 
       android:background="#FF0000"> 

      </FrameLayout> 

      <HorizontalScrollView 
       android:id="@+id/horizontalScrollView1" 
       android:layout_width="fill_parent" 
       android:layout_height="wrap_content" > 

       <TabWidget 
        android:layout_marginLeft="5dp" 
        android:id="@android:id/tabs" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:tabStripEnabled="true" > 
       </TabWidget> 
      </HorizontalScrollView> 
     </LinearLayout> 
    </TabHost> 

</LinearLayout>

所以，請幫我在哪裏代碼越來越不對？我有例外，因爲

02-23 14：09：47.920：E/AndroidRuntime（1000）：java.lang.IllegalStateException：通過引起你忘了叫 '公共無效設置（LocalActivityManager的ActivityGroup）'？

來源

2012-02-23 NullPointerException

要擴展 Activity類

，儘量延長TabActivity類

或

如果你想使用Activity類，然後使用下面的

：

host = (TabHost) findViewById(R.id.tabhost); //here tabHost will be your Tabhost 
    LocalActivityManager mLocalActivityManager = new LocalActivityManager(mActivity, false); 
    mLocalActivityManager.dispatchCreate(state); // state will be bundle your activity state which you get in onCreate 
    tabHost.setup(mLocalActivityManager);

來源

2012-02-23 09:00:32 Vikram

感謝ü維克拉姆？它工作..我高壓浪費了2天在這個RnD ... – NullPointerException 2012-02-23 09:31:00

1更多的幫助，請我想膨脹佈局到每個選項卡..我hv完成這個視圖= LayoutInflater.from（上下文）.inflate（R.layout。 tab_indicator，null，false）; \t \t TextView tv =（TextView）view.findViewById（R.id.title）; \t \t tv.setText（text）; \t \t return view; – NullPointerException 2012-02-23 09:33:28

我的標籤是這樣的http://postimage.org/image/ts77xbmg3/1b52d397/ – NullPointerException 2012-02-23 09:41:43

java.lang.IllegalStateException ..... at tabhost.add（tabspec）;

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