[Android-Eclipse] simplecursoradapter e gridview

[Giupin]

Salve a tutti, vorrei richiamare un'activity che visualizzi dei dati ricavati da un database sqlite su una gridview ma ottengo questo errore all'initLoader:

	AsyncTaskLoader$LoadTask.onPostExecute(Object) line: 63	
	AsyncTaskLoader$LoadTask(ModernAsyncTask).finish(Object) line: 461	
	ModernAsyncTask.access$500(ModernAsyncTask, Object) line: 47	
	ModernAsyncTask$InternalHandler.handleMessage(Message) line: 474	
	ModernAsyncTask$InternalHandler(Handler).dispatchMessage(Message) line: 99	
	Looper.loop() line: 123	
	ActivityThread.main(String[]) line: 4627	
	Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]	
	Method.invoke(Object, Object...) line: 521	
	ZygoteInit$MethodAndArgsCaller.run() line: 868	
	ZygoteInit.main(String[]) line: 626	
	NativeStart.main(String[]) line: not available [native method]

questo è il codice

import android.database.Cursor;
import android.os.Bundle;
import android.widget.GridView;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v4.widget.SimpleCursorAdapter;
import android.support.v4.app.FragmentActivity;
import android.net.Uri;
import it.giupint.data.*;

public class ShowResults extends FragmentActivity implements LoaderManager.LoaderCallbacks<Cursor>{
	private DbCantiAdapter dbCanti;
	private Cursor cursor;
	private SimpleCursorAdapter adapter;
	//private Context thisContext = getApplicationContext();
	
	@Override
	public Loader<Cursor> onCreateLoader(int arg0, Bundle arg1) {
		String[] projection = {DbCantiAdapter.KEY_IDCANTO, DbCantiAdapter.KEY_TITOLO };    
		CursorLoader cursorLoader = new CursorLoader(this, Uri.EMPTY, projection, null, null, null);    
		return cursorLoader;
	}

	@Override
	public void onLoadFinished(Loader<Cursor> arg0, Cursor arg1) {
		adapter.swapCursor(cursor);		
	}

	@Override
	public void onLoaderReset(Loader<Cursor> arg0) {
		adapter.swapCursor(null);		
	}
	
	/** Called when the activity is first created. */    
	@Override
	public void onCreate(Bundle savedInstanceState) {        
		super.onCreate(savedInstanceState);        
		setContentView(R.layout.show_results);                          
			
		dbCanti = new DbCantiAdapter(this.getBaseContext());        
		dbCanti.open();
		
		dbCanti.addCanti(1, "Shemà", 1, "Bianco", "Ordinario", "Risposta", "--");
		
		Bundle bundle = this.getIntent().getExtras();
		cursor = dbCanti.fetchCantiByFilters(bundle.getBoolean("Parola"), bundle.getBoolean("Eucarestia"));        
		                   
		//String contactID = cursor.getString(cursor.getColumnIndex(DbCantiAdapter.KEY_IDCANTO));    
				
		GridView grvCanti = (GridView)findViewById(R.id.gridViewCanti);
		String[] cols = new String[] {DbCantiAdapter.KEY_TITOLO, DbCantiAdapter.KEY_PERIODO, DbCantiAdapter.KEY_TIPOALT};    
		int[] views = new int[] {android.R.id.text1, android.R.id.text2, android.R.id.text2 };     
		  
		adapter = new SimpleCursorAdapter(this, R.layout.show_results, null, cols, views, 0);
		grvCanti.setAdapter(adapter);
		cursor.close();
		
		getSupportLoaderManager().initLoader(0, null, this);
		dbCanti.close();   
	}
	
}

[Giupin]

dimenticavo che nello stack mi dice IllegalStateException