[Android] เก็บข้อมูลใน sqlite แบบ array 2 มิติ ทำอย่างไงครับ

// Select All Data
public String[][] SelectAllData() {
	// TODO Auto-generated method stub
	
	 try {
		String arrData[][] = null;	
		 SQLiteDatabase db;
		 db = this.getReadableDatabase(); // Read Data
			
		 String strSQL = "SELECT  * FROM " + TABLE_MEMBER;
		 Cursor cursor = db.rawQuery(strSQL, null);
		 
		 	if(cursor != null)
		 	{
				if (cursor.moveToFirst()) {
					arrData = new String[cursor.getCount()][cursor.getColumnCount()];
					/***
					 *  [x][0] = MemberID
					 *  [x][1] = Name
					 *  [x][2] = Tel
					 */
					int i= 0;
					do {				
						arrData[i][0] = cursor.getString(0);
						arrData[i][1] = cursor.getString(1);
						arrData[i][2] = cursor.getString(2);
						i++;
					} while (cursor.moveToNext());						

				}
		 	}
		 	cursor.close();
			
			return arrData;
			
	 } catch (Exception e) {
	    return null;
	 }

}