UISearchBarDelegate on UITableView with Sections Issue - objective-c

Question

I'm having issues with implementing the UISearchBarDelegate on my UITableView with sections issue where every time I try to search for something inside the UITableView, either it doesn't display the desired result or it crashes the app with an error saying:
Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayI objectAtIndex:]: index 1 beyond bounds [0 .. 0]'
Here's inside my header file:
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController <UITableViewDataSource, UITableViewDelegate, UISearchDisplayDelegate, UISearchBarDelegate>
{
UITableView *mainTableView;
NSMutableArray *contentsList;
NSMutableArray *searchResults;
NSString *savedSearchTerm;
NSMutableArray *ivSectionKeys;
NSMutableDictionary *ivSectionContents;
}
#property (nonatomic, retain) IBOutlet UITableView *mainTableView;
#property (nonatomic, retain) NSMutableArray *contentsList;
#property (nonatomic, retain) NSMutableArray *searchResults;
#property (nonatomic, copy) NSString *savedSearchTerm;
#property (nonatomic, retain) NSMutableArray *sectionKeys;
#property (nonatomic, retain) NSMutableDictionary *sectionContents;
- (void)handleSearchForTerm:(NSString *)searchTerm;
#end
while this is inside my implementation file:
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
#synthesize mainTableView;
#synthesize contentsList;
#synthesize searchResults;
#synthesize savedSearchTerm;
#synthesize sectionKeys = ivSectionKeys;
#synthesize sectionContents = ivSectionContents;
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
NSMutableArray *keys = [[NSMutableArray alloc] init];
NSMutableDictionary *contents = [[NSMutableDictionary alloc] init];
NSString *colorKey = #"Colors";
NSString *clothingKey = #"Clothing";
NSString *miscKey = #"Misc";
[contents setObject:[NSArray arrayWithObjects:#"Red", #"Blue", nil] forKey:colorKey];
[contents setObject:[NSArray arrayWithObjects:#"Pants", #"Shirt", #"Socks", nil] forKey:clothingKey];
[contents setObject:[NSArray arrayWithObjects:#"Wankle Rotary Engine", nil] forKey:miscKey];
[keys addObject:clothingKey];
[keys addObject:miscKey];
[keys addObject:colorKey];
self.sectionKeys = keys;
self.sectionContents = contents;
// Restore search term
if (self.savedSearchTerm)
{
self.searchDisplayController.searchBar.text = self.savedSearchTerm;
}
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Save the state of the search UI so that it can be restored if the view is re-created.
self.savedSearchTerm = self.searchDisplayController.searchBar.text;
self.searchResults = nil;
}
- (void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[self.mainTableView reloadData];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (void)handleSearchForTerm:(NSString *)searchTerm
{
self.savedSearchTerm = searchTerm;
if (self.searchResults == nil)
{
NSMutableArray *array = [[NSMutableArray alloc] init];
self.searchResults = array;
array = nil;
}
[self.searchResults removeAllObjects];
if ([self.savedSearchTerm length] != 0)
{
for (NSString *currentString in self.sectionContents)
{
if ([currentString rangeOfString:searchTerm options:NSCaseInsensitiveSearch].location != NSNotFound)
{
[self.searchResults addObject:currentString];
}
}
}
}
#pragma mark -
#pragma mark UITableViewDataSource Methods
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
NSInteger sections = [self.sectionKeys count];
return sections;
}
- (NSString *)tableView:(UITableView *)tableView
titleForHeaderInSection:(NSInteger)section
{
NSString *key = [self.sectionKeys objectAtIndex:section];
return key;
}
- (NSInteger)tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section
{
NSString *key = [self.sectionKeys objectAtIndex:section];
NSArray *contents = [self.sectionContents objectForKey:key];
NSInteger rows;
if (tableView == [[self searchDisplayController] searchResultsTableView])
rows = [self.searchResults count];
else
rows = [contents count];
NSLog(#"rows is: %d", rows);
return rows;
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *key = [self.sectionKeys objectAtIndex:indexPath.section];
NSArray *contents = [self.sectionContents objectForKey:key];
NSString *contentForThisRow = [contents objectAtIndex:indexPath.row];
if (tableView == [self.searchDisplayController searchResultsTableView])
contentForThisRow = [self.searchResults objectAtIndex:indexPath.row];
else
contentForThisRow = [contents objectAtIndex:indexPath.row];
static NSString *CellIdentifier = #"CellIdentifier";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
cell.textLabel.text = contentForThisRow;
return cell;
}
#pragma mark -
#pragma mark UITableViewDelegate Methods
- (void)tableView:(UITableView *)tableView
didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
#pragma mark -
#pragma mark UISearchDisplayController Delegate Methods
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller
shouldReloadTableForSearchString:(NSString *)searchString
{
[self handleSearchForTerm:searchString];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
- (void)searchDisplayControllerWillEndSearch:(UISearchDisplayController *)controller
{
self.savedSearchTerm = nil;
[self.mainTableView reloadData];
}
#end
I think my issue is inside my for-loop but I'm not really sure.

Answer 1

You need to update all of your table view data source and delegate methods to handle both tables (you only do this in some):
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
NSInteger sections = [self.sectionKeys count];
return sections;
}
should be:
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
if (tableView == self.tableView) {
NSInteger sections = [self.sectionKeys count];
return sections;
} else { // assume it's the search table
// replace this with the actual result
return numberOfSectionsForSearchTable;
}
}