java.lang.IllegalStateException: Content view not yet created - android-listfragment

Question

The "mMatchAdapter" is initialize at onCreate, but it is null in "setCursor", why?
This ListFragment is a tab of a tabHost, I use it to display list. I want change adapter in setCursor to display other list, but occur an error at line mMatchAdapter.changeCursor(c);
because mMatchAdapter is null, why? when getListView above this line, will
public class RecentsListFragment extends ListFragment implements onSetRecentsContactsCursor {
public final static String TAG = "RecentsListFragment";
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
// TODO Auto-generated method stub
Log.d(TAG, "---------> onViewCreated ");
mListView = getListView();
Log.d(TAG, "onViewCreated------mListView = " + mListView);
mViewCreated = true;
setListShown(false);
super.onViewCreated(view, savedInstanceState);
}
#Override
public void onDestroyView() {
// TODO Auto-generated method stub
Log.d(TAG, "---------> onDestroyView ");
mViewCreated = false;
super.onDestroyView();
}
#Override
public void onListItemClick(ListView l, View v, int pos, long id) {
// TODO Auto-generated method stub
Cursor cursor;
ListAdapter adapter = getListAdapter();
if (adapter == mLogsAdapter){
cursor = (Cursor)mLogsAdapter.getItem(pos);
}else if (adapter == mMatchAdapter){
cursor = (Cursor)mMatchAdapter.getItem(pos);
}
super.onListItemClick(l, v, pos, id);
}
#Override
public void onAttach(Activity activity) {
// TODO Auto-generated method stub
Log.d(TAG, "------>onAttach");
mActivity = activity;
super.onAttach(activity);
}
#Override
public void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
Log.d(TAG, "---------> onCreate ");
mNumberQuery = NumberLocalQuery.getInstance(mActivity.getApplicationContext());
mQueryHandler = new CursorQueryHandler(mActivity.getContentResolver());
mPhotoLoader = new ContactPhotoLoader(mActivity);
mLogsAdapter = new BBKRecentCallsAdapter(mActivity, mPhotoLoader, mNumberQuery);
mMatchAdapter = new BBKDialerMatchListAdapter(mActivity, mPhotoLoader, mNumberQuery);
super.onCreate(savedInstanceState);
}
#Override
public void onStart() {
// TODO Auto-generated method stub
mCallsChanged = true;
Log.d(TAG, "---------> onStart ");
setListAdapter(mLogsAdapter);
mLogsAdapter.clearCache();
startQuery();
super.onStart();
}
#Override
public void onStop() {
// TODO Auto-generated method stub
mCallsChanged = false;
Log.d(TAG, "---------> onStop ");
if (null != mQueryHandler){
mQueryHandler.cancelOperation(CUROSR_QUERY_TOKEN_CALLS);
}
super.onStop();
}
#Override
public void onResume() {
// TODO Auto-generated method stub
Log.d(TAG, "---------> onResume ");
boolean is24Hour = DateFormat.is24HourFormat(mActivity);
if (null != mLogsAdapter){
mLogsAdapter.set24Hour(is24Hour);
}
if (null != mMatchAdapter){
mMatchAdapter.set24Hour(is24Hour);
}
mIsMatching = false;
super.onResume();
}
private void startQuery() {
Log.d(TAG, "---------> startQuery ");
if(mCallsChanged) {
Log.d(TAG, "start query call_log database");
mCallsChanged = false;
mQueryHandler.cancelOperation(CUROSR_QUERY_TOKEN_CALLS);
mQueryHandler.startQuery(CUROSR_QUERY_TOKEN_CALLS, null,
Calls.CONTENT_URI, RecentCallsListActivity.CALL_LOG_PROJECTION, null,
null, Calls.DEFAULT_SORT_ORDER);
}else if(mLogsAdapter != null && (mLogsAdapter.getCursor() != null)) {
mLogsAdapter.notifyDataSetChanged();
}
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
// TODO Auto-generated method stub
Log.d(TAG, "---------> onActivityCreated ");
super.onActivityCreated(savedInstanceState);
}
#Override
public void onDestroy() {
// TODO Auto-generated method stub
Log.d(TAG, "---------> onDestroy ");
if (null != mLogsAdapter){
mLogsAdapter.clearCache();
mLogsAdapter.changeCursor(null);
}
if (null != mMatchAdapter){
mMatchAdapter.changeCursor(null);
}
super.onDestroy();
}
#Override
public void onDetach() {
// TODO Auto-generated method stub
Log.d(TAG, "---------> onDetach ");
super.onDetach();
}
#Override
public void setCursor(Cursor c) {
// TODO Auto-generated method stub
Log.d(TAG, "====setCursor======mViewCreated====" + mViewCreated);
Log.d(TAG, "--------->mListView = " + mListView);
if (null != c && c.getCount() > 0){
setListAdapter(mMatchAdapter);
}
mMatchAdapter.changeCursor(c);
}
}