uisearchbar doesn't work - uitableview

Question

I created a subClass of UITextView with a searchBar, here is the code:
#import "SezioniTableController.h"
#interface SezioniTableController ()
#end
#implementation SezioniTableController
#synthesize searchBar,searchDisplayController;
#synthesize arraySezioni,arrayFiltrato;
#synthesize objTesto;
- (id)initWithStyle:(UITableViewStyle)style andArray:(NSMutableArray *)array{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
self.searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, self.view.frame.size.width, 44)];
self.searchBar.delegate = self;
self.searchDisplayController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];
self.searchDisplayController.delegate = self;
self.searchDisplayController.searchResultsDataSource = self;
self.arraySezioni = array;
self.arrayFiltrato = array;
}
return self;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void) loadView {}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return self.arrayFiltrato.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"MyIdentifier"];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewStylePlain reuseIdentifier:#"MyIdentifier"];
}
self.objTesto = [arrayFiltrato objectAtIndex:indexPath.row];
cell.textLabel.text = self.objTesto.titoloTesto;
return cell;
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
// Navigation logic may go here. Create and push another view controller.
/*
<#DetailViewController#> *detailViewController = [[<#DetailViewController#> alloc] initWithNibName:#"<#Nib name#>" bundle:nil];
// ...
// Pass the selected object to the new view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
*/
NSDictionary *dict = [NSDictionary dictionaryWithObject:[self.arrayFiltrato objectAtIndex:indexPath.row] forKey:#"Testo"];
[[NSNotificationCenter defaultCenter] postNotificationName:#"PassaggioTesto" object:self userInfo:dict];
NSLog(#"Click");
[tableView deselectRowAtIndexPath:indexPath animated:YES];
}
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{
return self.searchBar; //in .h, IBOutlet UISearchBar* search;
}
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return 44;
}
- (BOOL) searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString{
[self filterContentForSearchText:searchString scope: [[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];
NSLog(#"aa");
//[[NSNotificationCenter defaultCenter] postNotificationName:#"ReloadTable" object:self];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
- (BOOL) searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption{
[self filterContentForSearchText:[self.searchDisplayController.searchBar text] scope:[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:searchOption]];
NSLog(#"ab");
//[[NSNotificationCenter defaultCenter] postNotificationName:#"ReloadTable" object:self];
// Return YES to cause the search result table view to be reloaded.
return YES;
}
- (void) filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope{
NSLog(#"a count:%d",self.arraySezioni.count);
[self.arrayFiltrato removeAllObjects]; // First clear the filtered array.
for (objTesto in self.arraySezioni){
NSComparisonResult result = [objTesto.titoloTesto compare:searchText options:NSCaseInsensitiveSearch range:NSMakeRange(0, [searchText length])];
if (result == NSOrderedSame){
NSLog(#"Titolo: %#",objTesto.titoloTesto);
[self.arrayFiltrato addObject:self.objTesto];
}else{
NSLog(#"Non trovato");
}
}
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)saearchBar {
[self.arrayFiltrato removeAllObjects];
[self.arrayFiltrato addObjectsFromArray: self.arraySezioni];
}
#end
On my uiviewcontroller I create a table using the uitableview created with this code:
self.arrayTesti = [self.dataLoad leggiArgomentiDellaSezione:tag];
self.table = [[SezioniTableController alloc] initWithStyle:UITableViewStylePlain andArray:self.arrayTesti];
self.tableArgumentView.delegate = self.table;
self.tableArgumentView.dataSource = self.table;
[self.tableArgumentView reloadData];
The viewcontroller is for an iPad application, the table works perfectly but if I try to search something it doesn't work!
Can you help me?

Answer 1

If you assign
self.arraySezioni = array;
self.arrayFiltrato = array;
then both self.arraySezioni and self.arrayFiltrato are pointers to the same array. Which means that if you empty one array with
[self.arrayFiltrato removeAllObjects];
then the other array self.arraySezioni (and the original array) are also empty.
So at least self.arrayFiltrato should be a copy of the original array:
self.arrayFiltrato = [array copy];