핵심 데이터 속성 업데이트를위한 삭제 방법 변경

Question

잠시 후 선택한 행에 대해 길게 누르기 작업을 수행 한 후 테이블보기에서 핵심 데이터 레코드를 삭제할 수 있습니다. 내 애플 리케이션 요구 사항에 따르면, 나는 영구적으로 레코드를 삭제하고 싶지 않아, 나는 레코드를 삭제 된 것으로 표시하고 싶다. 따라서 나는 ToDoStatus라는 속성을 생성했다. 나는 업데이트하고 내용을 'Marked as deleted 사용자가 선택한 행에서 길게 누르기 작업을 실행하면 이제 코드가 그대로 유지됩니다 (행이 영구적으로 삭제됨). 즉

[[fetchedResultsController objectAtIndexPath:indexPath] setValue:@"Gone" forKey:@"ToDoStatus"] 

: 당신은 친절하게 나에게 handleLongPress 방법 내부 속성의 내용 값을 변경하는 방법을 보여 주시기 바랍니다 : 당신은 현재 deleteObject:이

#import "RootViewController.h" 
#import "AddToDoViewController.h" 
#import "EditToDoViewController.h" 
#import "MenuViewController.h" 



@interface RootViewController() 
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath; 
@end 


@implementation RootViewController 

@synthesize fetchedResultsController, managedObjectContext,AddToDoButton,MenuToDoButton; 


#pragma mark - 
#pragma mark View lifecycle 

- (void)viewDidLoad { 

    [super viewDidLoad]; 
// [self setTitle:@"Today"]; 
    [[self navigationItem] setRightBarButtonItem:[self editButtonItem]]; 
    self.editButtonItem.tintColor = [UIColor redColor]; 

    UILabel *lblTitle = [[UILabel alloc] init]; 
    lblTitle.text = @"Today"; 
    lblTitle.backgroundColor = [UIColor clearColor]; 
    lblTitle.textColor = [UIColor blueColor]; 
    lblTitle.shadowColor = [UIColor whiteColor]; 
    lblTitle.shadowOffset = CGSizeMake(0, 1); 
    lblTitle.font = [UIFont fontWithName:@"Noteworthy" size:25.0]; 
    [lblTitle sizeToFit]; 

    self.navigationItem.titleView = lblTitle; 



    [self.editButtonItem setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: 
            [UIFont fontWithName:@"Noteworthy" size:20], NSFontAttributeName, 
            [UIColor blueColor], NSForegroundColorAttributeName, 
            nil] 
          forState:UIControlStateNormal]; 







    self.tableView.delegate = self; 
    self.tableView.dataSource = self; 


    NSError *error = nil; 
    if (![[self fetchedResultsController] performFetch:&error]) 
    { 
    NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
    abort(); 
    } 
} 
- (void) viewWillAppear:(BOOL)animated{ 
    NSError *error = nil; 
    if (![[self fetchedResultsController] performFetch:&error]) 
    { 
     NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
     abort(); 
    } 
    [self.tableView reloadData]; 
} 
- (void)configureCell:(UITableViewCell *)cell atIndexPath:(NSIndexPath *)indexPath 
{ 
    NSManagedObject *managedObject = [fetchedResultsController objectAtIndexPath:indexPath]; 





    [[cell textLabel] setText:[[managedObject valueForKey:@"estado"] description]]; 
    NSString *myString = [NSString stringWithFormat:@"%@",[[managedObject valueForKey:@"todoYear"] description]]; 
    UIButton *urgentButton = [[UIButton alloc]initWithFrame:CGRectMake(15, 25, 18, 18)]; 

    [urgentButton setImage:[UIImage imageNamed:@"urgent"]forState:UIControlStateNormal]; 
    [cell addSubview:urgentButton]; 

    UIButton *yellowButton = [[UIButton alloc]initWithFrame:CGRectMake(305, 5, 10, 40)]; 

    [yellowButton setImage:[UIImage imageNamed:@"Red"]forState:UIControlStateNormal]; 
    [cell addSubview:yellowButton]; 

    UIButton *doneButton = [[UIButton alloc]initWithFrame:CGRectMake(33, 27, 18, 18)]; 

    [doneButton setImage:[UIImage imageNamed:@"alldone"]forState:UIControlStateNormal]; 
    [cell addSubview:doneButton]; 

    UIButton *doneButton2 = [[UIButton alloc]initWithFrame:CGRectMake(53, 27, 18, 18)]; 

    [doneButton2 setImage:[UIImage imageNamed:@"alldone"]forState:UIControlStateNormal]; 
    [cell addSubview:doneButton2]; 



    UIButton *doneButton3 = [[UIButton alloc]initWithFrame:CGRectMake(71, 27, 18, 18)]; 

    [doneButton3 setImage:[UIImage imageNamed:@"urgent"]forState:UIControlStateNormal]; 
    [cell addSubview:doneButton3]; 


    [[cell detailTextLabel] setText:@" "]; 
    [cell setSelectionStyle:UITableViewCellSelectionStyleNone]; 
    cell.textLabel.textColor = [UIColor blueColor]; 
    cell.textLabel.font = [UIFont fontWithName:@"Noteworthy" size:22.0f]; 
    cell.detailTextLabel.font = [UIFont fontWithName:@"Noteworthy" size:15.0f]; 

} 

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { 


    EditToDoViewController *detailViewController = [[EditToDoViewController alloc] initWithNibName:@"EditToDoViewController" bundle:nil]; 
    NSManagedObject *selectedObject = [[self fetchedResultsController] objectAtIndexPath:indexPath]; 
    detailViewController.selectedObject = selectedObject; 
    //[self.navigationController pushViewController:detailViewController animated:YES]; 

    [self presentViewController:detailViewController animated:YES completion:nil]; 
} 




#pragma mark - 
#pragma mark Table view data source 
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
    return [[fetchedResultsController sections] count]; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    id <NSFetchedResultsSectionInfo> sectionInfo = [[fetchedResultsController sections] objectAtIndex:section]; 
    return [sectionInfo numberOfObjects]; 
} 



- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    static NSString *CellIdentifier = @"Cell"; 

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
    if (cell == nil) 
    { 
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle 
            reuseIdentifier:@"Cell"] autorelease]; 
    } 

    //long press 

    UILongPressGestureRecognizer *lpgr = [[UILongPressGestureRecognizer alloc] 
              initWithTarget:self action:@selector(handleLongPress:)]; 
    lpgr.minimumPressDuration = 1.00; 
    //seconds 
    [cell addGestureRecognizer:lpgr]; 




    [self configureCell:cell atIndexPath:indexPath]; 

    return cell; 
} 


-(void)handleLongPress:(UILongPressGestureRecognizer *)gestureRecognizer 
{ 
    CGPoint p = [gestureRecognizer locationInView:self.tableView]; 

    NSIndexPath *indexPath = [self.tableView indexPathForRowAtPoint:p]; 
    if (indexPath == nil) 
     NSLog(@"long press on table view but not on a row"); 
    else 
    { 

     if (gestureRecognizer.state == UIGestureRecognizerStateEnded) { 
      NSLog(@"UIGestureRecognizerStateEnded"); 
      //Do Whatever You want on End of Gesture 
     } 
     else if (gestureRecognizer.state == UIGestureRecognizerStateBegan){ 
      UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"Announcement" message: @"You have long-pressed the row...!" delegate: nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
      [alert show]; 
      [alert release]; 
      NSLog(@"UIGestureRecognizerStateBegan."); 


      NSManagedObjectContext *context = [fetchedResultsController managedObjectContext]; 
      [context deleteObject:[fetchedResultsController objectAtIndexPath:indexPath]]; 
      NSLog(@"long press on table view at row %d", indexPath.row); 

      // Update ToDoStatus 
      NSError *error1 = nil; 
      if (![[self fetchedResultsController] performFetch:&error1]) 
      { 
       NSLog(@"Unresolved error %@, %@", error1, [error1 userInfo]); 
       abort(); 
      } 
      NSError *error = nil; 
      if (![context save:&error]) 
      { 
       NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
       abort(); 
      } 
      [self.tableView reloadData]; 
      //Do Whatever You want on Began of Gesture 
     } 

    } 
} 
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    if (editingStyle == UITableViewCellEditingStyleDelete) 
    { 
    NSManagedObjectContext *context = [fetchedResultsController managedObjectContext]; 
    [context deleteObject:[fetchedResultsController objectAtIndexPath:indexPath]]; 

    NSError *error = nil; 
    if (![context save:&error]) 
    { 
     NSLog(@"Unresolved error %@, %@", error, [error userInfo]); 
     abort(); 
    } 
     NSError *error1 = nil; 
     if (![[self fetchedResultsController] performFetch:&error1]) 
     { 
      NSLog(@"Unresolved error %@, %@", error1, [error userInfo]); 
      abort(); 
     } 
     UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"To-Do Deleted" message: @"You have marked To-Do as deleted...!" delegate: nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; 
     [alert show]; 
     [alert release]; 
     [self.tableView reloadData]; 
    } 
} 

- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath 
{ 
    return YES; 
} 

- (void)tableView:(UITableView *)tableView 
moveRowAtIndexPath:(NSIndexPath *)sourceIndexPath 
     toIndexPath:(NSIndexPath *)destinationIndexPath; 
{ 
    NSMutableArray *things = [[fetchedResultsController fetchedObjects] mutableCopy]; 

    // Grab the item we're moving. 
    NSManagedObject *thing = [[self fetchedResultsController] objectAtIndexPath:sourceIndexPath]; 

    // Remove the object we're moving from the array. 
    [things removeObject:thing]; 
    // Now re-insert it at the destination. 
    [things insertObject:thing atIndex:[destinationIndexPath row]]; 

    // All of the objects are now in their correct order. Update each 
    // object's displayOrder field by iterating through the array. 
    int i = 0; 
    for (NSManagedObject *mo in things) 
    { 
    [mo setValue:[NSNumber numberWithInt:i++] forKey:@"displayOrder"]; 
    } 

    [things release], things = nil; 

    [managedObjectContext save:nil]; 
} 






#pragma mark - 
#pragma mark Fetched results controller 
- (IBAction)AddToDoAction:(id)sender { 

    AddToDoViewController *viewController = [[AddToDoViewController alloc] init]; 
    [self presentViewController:viewController animated:YES completion:nil]; 

} 
#pragma mark Fetched results controller 
- (IBAction)MenuToDoAction:(id)sender { 

    MenuViewController *viewController = [[MenuViewController alloc] init]; 
    [self presentViewController:viewController animated:YES completion:nil]; 

} 

- (NSFetchedResultsController *)fetchedResultsController 
{ 
    if (fetchedResultsController) return fetchedResultsController; 

    NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; 
    NSEntityDescription *entity = 
       [NSEntityDescription entityForName:@"FavoriteThing" 
          inManagedObjectContext:managedObjectContext]; 

    [fetchRequest setEntity:entity]; 

    NSSortDescriptor *sortDescriptor = 
       [[NSSortDescriptor alloc] initWithKey:@"displayOrder" 
              ascending:YES]; 

    NSArray *sortDescriptors = [[NSArray alloc] 
           initWithObjects:sortDescriptor, nil]; 



    NSNumber *yearBuscado = @2013; 
    NSNumber *mesBuscado = @12; 
    NSNumber *diaBuscado = @13; 
    NSString *tipourgente = @"Urgent"; 
    NSString *tipocolor = @"Yellow"; 
    NSPredicate *yearPredicate = [NSPredicate predicateWithFormat:@"todoYear == %@", yearBuscado]; 
    NSPredicate *monthPredicate = [NSPredicate predicateWithFormat:@"todoMonth == %@", mesBuscado]; 
    NSPredicate *dayPredicate = [NSPredicate predicateWithFormat:@"todoDay == %@", diaBuscado]; 
    NSPredicate *urgentPredicate = [NSPredicate predicateWithFormat:@"urgent == %@", tipourgente]; 
    NSPredicate *colorPredicate = [NSPredicate predicateWithFormat:@"color == %@", tipocolor]; 

    [fetchRequest setSortDescriptors:sortDescriptors]; 






    NSPredicate *busqueda = [NSCompoundPredicate andPredicateWithSubpredicates:@[yearPredicate, monthPredicate,dayPredicate,urgentPredicate]]; 

    [fetchRequest setPredicate:busqueda]; 
    NSFetchedResultsController *aFetchedResultsController = 
       [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest 
                managedObjectContext:managedObjectContext 
                sectionNameKeyPath:nil cacheName:nil]; 
    aFetchedResultsController.delegate = self; 
    [self setFetchedResultsController:aFetchedResultsController]; 


    [aFetchedResultsController release]; 
    [fetchRequest release]; 
    [sortDescriptor release]; 
    [sortDescriptors release]; 


    return fetchedResultsController; 
}  

- (void)dealloc { 
    [fetchedResultsController release]; 
    [managedObjectContext release]; 


    [super dealloc]; 
} 


@end 

Answer 1

를 대체 모든.