public void onClickAddTitle(View view) {
		
		//---add a book---

		ContentValues values = new ContentValues();
		values.put("title", ((EditText)
				findViewById(R.id.txtTitle)).getText().toString());
		values.put("isbn", ((EditText)
				findViewById(R.id.txtISBN)).getText().toString());
		Uri uri = getContentResolver().insert(
				Uri.parse(
						"content://hr.math.provider.contprov/books"),
						values);
	}

	public void onClickRetrieveTitles(View view) {
		//---retrieve the titles---
		Uri allTitles = Uri.parse(
				"content://hr.math.provider.contprov/books");
		
		Cursor c; 
		if (android.os.Build.VERSION.SDK_INT <11) {
			//---before Honeycomb---
			c = managedQuery(allTitles, null, null, null,
					"title desc");
		} else {
			//---Honeycomb and later---
			CursorLoader cursorLoader = new CursorLoader(
					this, 
					allTitles, null, null, null,
					"title desc");
			c = cursorLoader.loadInBackground();        	
		}
		
		if (c.moveToFirst()) {
			do{
				Toast.makeText(this, 
						c.getString(c.getColumnIndex(
								BooksProvider._ID)) + ", " +
								c.getString(c.getColumnIndex(
										BooksProvider.TITLE)) + ", " +
										c.getString(c.getColumnIndex(
												BooksProvider.ISBN)),
												Toast.LENGTH_SHORT).show();
			} while (c.moveToNext());
		}
	}