title: Error, core data, reason: '*** -[_PFArray objectAtIndex:]: index (2) beyond bounds (2)'
body: <p>Hi i am almost new in programing.
  I am faced with an error that I couldn't solve anyway. Even after comparing with anther solutions.
  I have worked on it for about 3 days.</p>
  
  <p>So let me completely describe my problem:</p>
  
  <p>1.this is my implementation code:</p>
  
  <pre><code>#import "DocumentTableViewController.h"
  #import "AddDocumentTableView.h"
  #import "DB_document.h"
  
  @implementation DocumentTableViewController
  
  @synthesize managedObjectContext;
  @synthesize btnAddDocument;
  @synthesize fetchedObjects;
  
  - (id)initWithStyle:(UITableViewStyle)style
  {
      self = [super initWithStyle:style];
      if (self) {
          // Custom initialization
      }
      return self;
  }
  
  - (void)didReceiveMemoryWarning
  {
      // Releases the view if it doesn't have a superview.
      [super didReceiveMemoryWarning];
  
      // Release any cached data, images, etc that aren't in use.
  }
  
  #pragma mark - View lifecycle
  
  - (void)viewDidLoad
  {
      [super viewDidLoad];
      NSManagedObjectContext *context = managedObjectContext;
      NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
      NSEntityDescription *entity = [NSEntityDescription entityForName:@"DB_document" inManagedObjectContext:context];
      [fetchRequest setEntity:entity];
      NSError *error;
      fetchedObjects = [context executeFetchRequest:fetchRequest error:&amp;error];
      NSLog(@"%d",[fetchedObjects count]);
  }
  
  - (void)viewDidUnload
  {
      [self setBtnAddDocument:nil];
      [super viewDidUnload];
  }
  
  - (void)viewWillAppear:(BOOL)animated
  {
      [super viewWillAppear:animated];
  }
  
  - (void)viewDidAppear:(BOOL)animated
  {
      [super viewDidAppear:animated];
  }
  
  - (void)viewWillDisappear:(BOOL)animated
  {
      [super viewWillDisappear:animated];
  }
  
  - (void)viewDidDisappear:(BOOL)animated
  {
      [super viewDidDisappear:animated];
  }
  
  - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
  {
      // Return YES for supported orientations
      return (interfaceOrientation == UIInterfaceOrientationPortrait);
  }
  
  #pragma mark - Table view data source
  
  - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
  {
      return 2;
  }
  
  - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
  {
      int result = 0;
      if (section == 0) 
      {
          result = [fetchedObjects count] + 1;
      }
      else if (section == 1)
      {
          result = 1;
      }
      return result;
  }
  
  - (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
  {
      return 40;
  }
  
  - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
  {
      static NSString *CellIdentifier = @"Cell";
  
      UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
      if (cell == nil) {
          cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
      }
  
      DB_document *db_document = [fetchedObjects objectAtIndex:indexPath.row];
  
      if (indexPath.section == 0 &amp;&amp; indexPath.row == 0) 
      {
          UILabel *lblMoney = [[UILabel alloc] initWithFrame:CGRectMake(10, 0, 70, 40)];
          lblMoney.text = @"amount";
          lblMoney.textAlignment = UITextAlignmentCenter;
          lblMoney.textColor = [UIColor blackColor];
          lblMoney.backgroundColor = [UIColor clearColor];
          lblMoney.font = [UIFont systemFontOfSize:12];
          [cell addSubview:lblMoney];
  
          UILabel *lblDescription = [[UILabel alloc] initWithFrame:CGRectMake(85, 0, 150, 40)];
          lblDescription.text = @"description";
          lblDescription.textAlignment = UITextAlignmentCenter;
          lblDescription.textColor = [UIColor blackColor];
          lblDescription.backgroundColor = [UIColor clearColor];
          lblDescription.font = [UIFont systemFontOfSize:12];
          [cell addSubview:lblDescription];
  
          UILabel *lblDate = [[UILabel alloc] initWithFrame:CGRectMake(240, 0, 70, 40)];
          lblDate.text = @"date";
          lblDate.textAlignment = UITextAlignmentCenter;
          lblDate.textColor = [UIColor blackColor];
          lblDate.backgroundColor = [UIColor clearColor];
          lblDate.font = [UIFont systemFontOfSize:12];
          [cell addSubview:lblDate];
  
          UIButton *btnLine1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
          btnLine1.frame = CGRectMake(80, 0, 1, 40);
          [cell addSubview:btnLine1];
  
          UIButton *btnLine2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
          btnLine2.frame = CGRectMake(240, 0, 1, 40);
          [cell addSubview:btnLine2];
  
          return cell;
      }
      if (indexPath.section == 0 &amp;&amp; indexPath.row != 0)
      {
          UILabel *lblMoney = [[UILabel alloc] initWithFrame:CGRectMake(10, 0, 70, 40)];
          lblMoney.text = [NSString stringWithFormat:@"%d",db_document.docAmount];
          lblMoney.textAlignment = UITextAlignmentCenter;
          lblMoney.textColor = [UIColor blackColor];
          lblMoney.backgroundColor = [UIColor clearColor];
          lblMoney.font = [UIFont systemFontOfSize:12];
          [cell addSubview:lblMoney];
  
          UILabel *lblDescription = [[UILabel alloc] initWithFrame:CGRectMake(85, 0, 150, 40)];
          lblDescription.text = db_document.docDescription;
          lblDescription.numberOfLines = 2;
          lblDescription.textAlignment = UITextAlignmentCenter;
          lblDescription.textColor = [UIColor blackColor];
          lblDescription.backgroundColor = [UIColor clearColor];
          lblDescription.font = [UIFont systemFontOfSize:12];
          [cell addSubview:lblDescription];
  
          UILabel *lblDate = [[UILabel alloc] initWithFrame:CGRectMake(240, 0, 70, 40)];
          NSDateFormatter *dateFormater = [[NSDateFormatter alloc] init];
          [dateFormater setDateFormat:@"yyyy/mm/dd"];
          lblDate.text = [NSString stringWithFormat:@"%@",[dateFormater stringFromDate:(NSDate *)db_document.docDate]];
          lblDate.textAlignment = UITextAlignmentCenter;
          lblDate.textColor = [UIColor blackColor];
          lblDate.backgroundColor = [UIColor clearColor];
          lblDate.font = [UIFont systemFontOfSize:12];
          [cell addSubview:lblDate];
  
          UIButton *btnLine1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
          btnLine1.frame = CGRectMake(80, 0, 1, 40);
          [cell addSubview:btnLine1];
  
          UIButton *btnLine2 = [UIButton buttonWithType:UIButtonTypeRoundedRect];
          btnLine2.frame = CGRectMake(240, 0, 1, 40);
          [cell addSubview:btnLine2];
  
          return cell;
      }
      if (indexPath.section == 1)
      {
          UILabel *lblMoney = [[UILabel alloc] initWithFrame:CGRectMake(10, 0, 70, 40)];
          lblMoney.text = @"";
          lblMoney.textAlignment = UITextAlignmentCenter;
          lblMoney.textColor = [UIColor blackColor];
          lblMoney.backgroundColor = [UIColor clearColor];
          lblMoney.font = [UIFont systemFontOfSize:12];
          [cell addSubview:lblMoney];
  
          UILabel *lblTotalAmount = [[UILabel alloc] initWithFrame:CGRectMake(165, 0, 140, 40)];
          lblTotalAmount.text = @"amounts";
          lblTotalAmount.textAlignment = UITextAlignmentCenter;
          lblTotalAmount.textColor = [UIColor blackColor];
          lblTotalAmount.backgroundColor = [UIColor clearColor];
          lblTotalAmount.font = [UIFont systemFontOfSize:12];
          [cell addSubview:lblTotalAmount];
  
          UIButton *btnLine = [UIButton buttonWithType:UIButtonTypeRoundedRect];
          btnLine.frame = CGRectMake(160, 0, 1, 40);
          [cell addSubview:btnLine];
  
          return cell;
      }
      return cell;
  }
  
  - (IBAction)btnAddDocument_click:(id)sender
  {
      AddDocumentTableView *addDocumentTableView = [[AddDocumentTableView alloc] init];
      addDocumentTableView.managedObjectContext = managedObjectContext;
      [self.navigationController pushViewController:addDocumentTableView animated:YES];
  }
  </code></pre>
  
  <p>2.this is the error:</p>
  
  <p>2012-06-16 15:25:31.696 Account5[5534:fb03] 2
  2012-06-16 15:25:31.704 Account5[5534:fb03] <strong>* Terminating app due to uncaught exception 'NSRangeException', reason: '*</strong> -[_PFArray objectAtIndex:]: index (2) beyond bounds (2)'
  *** First throw call stack:</p>
  
  <p>3.Let me describe the program. I can save data to data base with core data but when i want to fetch the data program jumps out.I have to consider that I think NSManagedObjectContext fetched data  because fetchedObjects Array has 2 data because I inserted in.
  and I have to say that my RootViewController is DocumentTableViewController it means that exactly when I run the program it crashes. And if I want to run the app I must comment <code>DB_document *db_document = [fetchedObjects objectAtIndex:indexPath.row];</code></p>
  
  <p>and after that app runs and I can insert data in another page.
  I have to consider that when the app crashes it stops exactly on </p>
  
  <p><code>DB_document *db_document = [fetchedObjects objectAtIndex:indexPath.row];</code> </p>
  
  <p>with green highlighted line.
  thank you </p>