UISearchControllerを使用するUISplitViewControllerは、検索中にdetailViewにオブジェクトを渡しません。

Question

マスター詳細アプリケーションを作成しましたが、私はtableview用にUISearchControllerを実装しました。

検索が空白の場合でもTableViewとdetailViewsは正しく動作しますが、検索時に正しくフィルタリングされたオブジェクトが表示されますが、detailViewに渡すことはできません。

ご協力いただければ幸いです。前もって感謝します。

#pragma mark - 
#pragma mark Table view data source 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { 
    return [[self.fetchedResultsController sections] count]; 
} 


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { 

     id <NSFetchedResultsSectionInfo> sectionInfo = [[self.fetchedResultsController sections] objectAtIndex:section]; 
     return [sectionInfo numberOfObjects]; 
} 

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section 
{ 
    // Display the First Letter of the person's last name as section headings. 
    //return [[[fetchedResultsController sections] objectAtIndex:section] name]; 
    id <NSFetchedResultsSectionInfo> sectionInfo = [[self.fetchedResultsController sections] objectAtIndex:section]; 

    return [NSString stringWithFormat:@"%@", [sectionInfo name]]; 
} 

- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index { 

    if (index == 0) { 
     // search item 
     [tableView scrollRectToVisible:[[tableView tableHeaderView] bounds] animated:NO]; 
     return -1; 
    } 
    return index-1; 
} 

- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView 
{ 
    // Return the array of section index titles 
    NSArray *searchArray = [NSArray arrayWithObject:UITableViewIndexSearch]; 
    return [searchArray arrayByAddingObjectsFromArray:self.fetchedResultsController.sectionIndexTitles]; 
} 

- (void)viewDidLoad { 
    [super viewDidLoad]; 
    // Do any additional setup after loading the view, typically from a nib. 
    //self.navigationItem.leftBarButtonItem = self.editButtonItem; 

    //UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(insertNewObject:)]; 
    //self.navigationItem.rightBarButtonItem = addButton; 
    self.detailViewController = (DetailViewController *)[[self.splitViewController.viewControllers lastObject] topViewController]; 

    self.navigationItem.backBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Printers" style:UIBarButtonItemStylePlain target:nil action:nil]; 

    //instantiate a search results controller for presenting the search/filter results (will be presented on top of the parent table view) 
    UITableViewController *searchResultsController = [[UITableViewController alloc] initWithStyle:UITableViewStylePlain]; 

    searchResultsController.tableView.dataSource = self; 

    searchResultsController.tableView.delegate = self; 

    //instantiate a UISearchController - passing in the search results controller table 
    self.searchController = [[UISearchController alloc] initWithSearchResultsController:searchResultsController]; 

    //this view controller can be covered by theUISearchController's view (i.e. search/filter table) 
    self.definesPresentationContext = YES; 


    //define the frame for the UISearchController's search bar and tint 
    self.searchController.searchBar.frame = CGRectMake(self.searchController.searchBar.frame.origin.x, self.searchController.searchBar.frame.origin.y, self.searchController.searchBar.frame.size.width, 44.0); 

    self.searchController.searchBar.tintColor = [UIColor whiteColor]; 

    //add the UISearchController's search bar to the header of this table 
    self.tableView.tableHeaderView = self.searchController.searchBar; 


    //this ViewController will be responsible for implementing UISearchResultsDialog protocol method(s) - so handling what happens when user types into the search bar 
    self.searchController.searchResultsUpdater = self; 


    //this ViewController will be responsisble for implementing UISearchBarDelegate protocol methods(s) 
    self.searchController.searchBar.delegate = self; 
} 

    #pragma mark - UISearchResultsUpdating 

    -(void)updateSearchResultsForSearchController:(UISearchController *)searchController { 

     //get search text from user input 

     [NSFetchedResultsController deleteCacheWithName:@"Master"]; 

     // Init a fetch request 
     NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init]; 
     NSEntityDescription *entity = [NSEntityDescription entityForName:@"Event" inManagedObjectContext:self.managedObjectContext]; 
     [fetchRequest setEntity:entity]; 

     // Apply an ascending sort for the color items 
     NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"printer" ascending:YES selector:@selector(caseInsensitiveCompare:)]; 
     NSArray *descriptors = [NSArray arrayWithObject:sortDescriptor]; 
     [fetchRequest setSortDescriptors:descriptors]; 

     // Recover query 
     query = self.searchController.searchBar.text; 
     if (query && query.length) fetchRequest.predicate = [NSPredicate predicateWithFormat:@"(printer contains[cd] %@)",query]; 


     // Init the fetched results controller 
     NSError *error; 

     self.fetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:self.managedObjectContext sectionNameKeyPath:@"fLetter" cacheName:@"Master"]; 

     self.fetchedResultsController.delegate = self; 

     if (![[self fetchedResultsController] performFetch:&error]) NSLog(@"Error: %@", [error localizedDescription]); 


     //now that the tableSections and tableSectionsAndItems properties are updated, reload the UISearchController's tableview 
     [((UITableViewController *)self.searchController.searchResultsController).tableView reloadData]; 
    } 

     - (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender 
{ 
    if ([[segue identifier] isEqualToString:@"showDetail"]) 
    { 
     NSLog(@"showDetail segue was called..."); 

     if ([self.searchController.searchBar.text isEqualToString:@""]) 
     { 
      NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow]; 
      Event *object = [[self fetchedResultsController] objectAtIndexPath:indexPath]; 
      DetailViewController *controller = (DetailViewController *)[[segue destinationViewController] topViewController]; 
      [controller setDetailItem:object]; 
      controller.navigationItem.leftBarButtonItem = self.splitViewController.displayModeButtonItem; 
      controller.navigationItem.leftItemsSupplementBackButton = YES; 
      NSLog(@"Search Predicate was blank, and the code came here..."); 

     } 
     else 
     { 

      NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow]; 
      Event *object = [self.fetchedResultsController.fetchedObjects filteredArrayUsingPredicate:self.searchPredicate][indexPath.row]; 
      DetailViewController *controller = (DetailViewController *)[[segue destinationViewController] topViewController]; 
      [controller setDetailItem:object]; 
      controller.navigationItem.leftBarButtonItem = self.splitViewController.displayModeButtonItem; 
      controller.navigationItem.leftItemsSupplementBackButton = YES; 

     NSLog(@"Searching: section %ld row %ld", (long)indexPath.section, (long)indexPath.row); 
     NSLog(@"searchPredicate %@", self.searchPredicate);   } 
     [self.searchController.searchBar setText:@""]; 
    } 
} 

Answer 1

NSIndexPath *indexPath = [self.fetchedResultsController.fetchedObjects filteredArrayUsingPredicate:self.searchPredicate][indexPath.row]; 

私はこの問題は、この行であるかなり確信しています。上記の行で私が言及した最も適切なindexPathを取得しているところは？あなたが探しとのtableViewから選択された場合

、のtableViewは常に選択された行を返すので

NSIndexPath *indexPath = [self.searchDisplayController.searchResultsTableView indexPathForSelectedRow]; 

代わりの

NSIndexPath *indexPath = [self.fetchedResultsController.fetchedObjects filteredArrayUsingPredicate:self.searchPredicate][indexPath.row];