Fragment中获取网络数据的问题


public class FragmentTabChanel extends Fragment{

private final String TAG = "FragmentTabChanel"; private String[] CONTENT; private ViewPager pager;
private TabPageIndicator indicator;
@Override
public void onActivityCreated(Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
new GetLiveShowTitlesTask().execute();
} @Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.tv_channel, container, false);

pager = (ViewPager) view.findViewById(R.id.pager);
indicator = (TabPageIndicator) view 
.findViewById(R.id.indicator);
indicator.setOnPageChangeListener(new OnPageChangeListener() { @Override
public void onPageScrollStateChanged(int arg0) { } @Override
public void onPageScrolled(int arg0, float arg1, int arg2) {

} @Override
public void onPageSelected(int position) {
switch (position) {
case 0:
Log.v(TAG, "onPageSelected::" + position);
((SlidingFragmentActivity) getActivity())
.getSlidingMenu()
.setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN);
break;
default:
Log.v(TAG, "onPageSelected::" + position);
((SlidingFragmentActivity) getActivity()).getSlidingMenu()
.setTouchModeAbove(SlidingMenu.TOUCHMODE_NONE);
break;
}

} });
return view;
}

class GoogleMusicAdapter extends FragmentPagerAdapter {
public GoogleMusicAdapter(FragmentManager fm) {
super(fm);
} @Override
public Fragment getItem(int position) {
return TestFragment.newInstance(CONTENT[position % CONTENT.length]);
} @Override
public CharSequence getPageTitle(int position) {
return CONTENT[position % CONTENT.length].toUpperCase();
} @Override
public int getCount() {
return CONTENT.length;
} }

/**
     * 获取直播电视台名称
     * 
     * @author Administrator
     */
    private class GetLiveShowTitlesTask extends AsyncTask<Void, Void, Void>
    {
        private String returnJsonStr;
        
       
        private List<LiveChannelTypeModel> mTypeModels;
        
        @Override
        protected void onPreExecute()
        {
            super.onPreExecute();
        }
        
        @Override
        protected Void doInBackground(Void... params)
        {
            
            NetGet netGet = new NetGet(constant.LIVE_CATEGORY);
            returnJsonStr = netGet.doGetNoPass();
            Log.d(TAG,"电视频道返回的json:"+returnJsonStr);
            mTypeModels = new ArrayList<LiveChannelTypeModel>();
             
            try
            {
                if (null != returnJsonStr)
                {
                    JSONArray jsonArray = new JSONArray(returnJsonStr);
                    if (null != jsonArray)
                    {
                        for (int i = 0; i < jsonArray.length(); i++)
                        {
                            LiveChannelTypeModel model = new LiveChannelTypeModel();
                            
                            JSONObject jsonObj = jsonArray.getJSONObject(i);
                            model.setM_id(jsonObj.getString("m_id"));
                            String m_title_name = LiveUtil.decodeURL(jsonObj.getString("m_title"));
                            model.setM_title(m_title_name);
                            
                            mTypeModels.add(model);
                        }
                    }
                }
            }
            catch (JSONException e)
            {
                e.printStackTrace();
            }
            
            return null;
        }
        
        @Override
        protected void onPostExecute(Void result)
        {
            super.onPostExecute(result);
            
            if (null != mTypeModels && !mTypeModels.isEmpty())
            {
//                Intent intent = new Intent();
//                intent.putExtra("mTypeModels", (Serializable)mTypeModels);
                
//                intent.setClass(LiveLookback_refresh_activity.this, LiveLookback_main.class);
//                startActivity(intent);
            
             for(int i = 0; i < mTypeModels.size(); i++){
             CONTENT[i] = mTypeModels.get(i).getM_title();
             }
            
             Log.d(TAG,"频道tab名字"+CONTENT);
            
             FragmentPagerAdapter adapter = new GoogleMusicAdapter(getActivity()
         .getSupportFragmentManager());
        
         pager.setAdapter(adapter);
        
//         pager.setCurrentItem(0);
         ((SlidingFragmentActivity) getActivity()).getSlidingMenu()
         .setTouchModeAbove(SlidingMenu.TOUCHMODE_FULLSCREEN); 
        
         indicator.setViewPager(pager);
                
//                LiveLookback_refresh_activity.this.finish();
            }
            else
            {
//                loading_ll.setVisibility(View.GONE);
//                nodatas_ll.setVisibility(View.VISIBLE);
            }
        }
    }

}
报错信息如下：
04-12 23:20:56.953: E/AndroidRuntime(31892): java.lang.IllegalStateException: ViewPager has not been bound.
04-12 23:20:56.953: E/AndroidRuntime(31892):  at com.viewpagerindicator.TabPageIndicator.setCurrentItem(TabPageIndicator.java:243)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at com.viewpagerindicator.TabPageIndicator.onMeasure(TabPageIndicator.java:117)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.View.measure(View.java:12755)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1369)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:660)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:553)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.View.measure(View.java:12755)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.View.measure(View.java:12755)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1369)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1017)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:555)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.View.measure(View.java:12755)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.View.measure(View.java:12755)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.LinearLayout.measureVertical(LinearLayout.java:812)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.LinearLayout.onMeasure(LinearLayout.java:553)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.View.measure(View.java:12755)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at com.slidingmenu.lib.CustomViewAbove.onMeasure(CustomViewAbove.java:456)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.View.measure(View.java:12755)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:594)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:376)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.View.measure(View.java:12755)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4698)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.widget.FrameLayout.onMeasure(FrameLayout.java:293)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2099)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.View.measure(View.java:12755)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1064)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.view.ViewRootImpl.handleMessage(ViewRootImpl.java:2445)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.os.Handler.dispatchMessage(Handler.java:99)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.os.Looper.loop(Looper.java:137)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at android.app.ActivityThread.main(ActivityThread.java:4510)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at java.lang.reflect.Method.invokeNative(Native Method)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at java.lang.reflect.Method.invoke(Method.java:511)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:947)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:714)
04-12 23:20:56.953: E/AndroidRuntime(31892):  at dalvik.system.NativeStart.main(Native Method)json的数据已经拿到了，说我viewpage has not been bound。其实我就是想通过网络获得频道名称，有没有好的解决办法呢