Search Bar in navigation bar when clicked on icon - ios

Question

I have put a table view in a view controller containing a list of items.
[In that i had put one search icon in navigation bar shown in first image.When i click on that icon a search bar opens and a cancel button will be shown.Cancel button is working.][1]
Now i want to do search in search box.Please anyone can help me to get the code for that.
In viewDidLoad:
UIBarButtonItem *searchButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:#selector(toggleSearch:)];
self.navigationController.navigationBar.topItem.rightBarButtonItem = searchButton;
toggleSearch:
- (IBAction)toggleSearch:(id)sender
{
_searchBar = [[UISearchBar alloc] initWithFrame:CGRectZero];
_searchBar.delegate=self;
[_searchBar sizeToFit];
searchController= [[UISearchController alloc]initWithSearchResultsController:self];
searchController.searchResultsUpdater = self;
searchController.searchResultsUpdater = self;
searchController.delegate = self;
self.navigationItem.titleView = searchController.searchBar;
searchController.hidesNavigationBarDuringPresentation = NO;
}

Answer 1

You need to implement searchbar delegate methods.
First you can assign your main array to temporary array and after that you can add this code.
- (BOOL)searchBarShouldBeginEditing:(UISearchBar *)searchBar{
[_searchBar setShowsCancelButton:YES animated:YES];
return YES;
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
NSPredicate *result=[NSPredicate predicateWithFormat:#"SELF CONTAINS[cd] %#",searchText];
NSArray * array = [arrTemp filteredArrayUsingPredicate:result];
arrMain=[array mutableCopy];
[tblview reloadData];
}
-(void)searchBarCancelButtonClicked:(UISearchBar *)searchBar
{
[_searchBar setShowsCancelButton:NO animated:YES];
}
-(void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
NSPredicate *result=[NSPredicate predicateWithFormat:#"SELF CONTAINS[cd] %#",searchBar.text];
NSArray * array = [arrTemp filteredArrayUsingPredicate:result];
arrMain=[array mutableCopy];
[tblview reloadData];
[searchBar resignFirstResponder];
[_searchBar setShowsCancelButton:NO animated:YES];
}