iOS/iPhone Search Bar (UISearchBar) and Table View (UITableView)

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
    if([searchText length] == 0)
    {
        [displayObject removeAllObjects];
        [displayObject addObjectsFromArray:allObject];
    }
    else
    {
        [displayObject removeAllObjects];
        for(NSString * string in allObject)
        {
            NSRange r = [string rangeOfString:searchText options:NSCaseInsensitiveSearch];
            if(r.location != NSNotFound)
            {
                [displayObject addObject:string];
            }
        }
    }
    
    [tableViewObj reloadData];
}

//
//  ViewController.h
//  searchBarApp
//
//  Created by Weerachai on 11/18/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController <UITableViewDataSource,UITableViewDelegate,UISearchBarDelegate>
{
    IBOutlet UISearchBar *searchBarObj;
    IBOutlet UITableView *tableViewObj;
}

@end

//
//  ViewController.m
//  searchBarApp
//
//  Created by Weerachai on 11/18/55 BE.
//  Copyright (c) 2555 Weerachai. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()
{
    NSMutableArray *allObject;
    NSMutableArray *displayObject;
}

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    
    allObject = [[NSMutableArray alloc] init];
    [allObject addObject:@"1. One"];
    [allObject addObject:@"2. Two"];
    [allObject addObject:@"3. Three"];
    [allObject addObject:@"4. Four"];
    [allObject addObject:@"5. Five"];
    [allObject addObject:@"6. Six"];
    [allObject addObject:@"7. Seven"];
    [allObject addObject:@"8. Eight"];
    [allObject addObject:@"9. Nine"];
    [allObject addObject:@"10. Ten"];
    
    displayObject =[[NSMutableArray alloc] initWithArray:allObject];
}


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return displayObject.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    
    static NSString *CellIdentifier = @"Cell";
    
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        // Use the default cell style.
        cell = [[[UITableViewCell alloc] initWithStyle : UITableViewCellStyleSubtitle
                                       reuseIdentifier : CellIdentifier] autorelease];
    }
    
    
    NSString *cellValue = [displayObject objectAtIndex:indexPath.row];
    cell.textLabel.text = cellValue;
    
    return cell;
}

-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
    if([searchText length] == 0)
    {
        [displayObject removeAllObjects];
        [displayObject addObjectsFromArray:allObject];
    }
    else
    {
        [displayObject removeAllObjects];
        for(NSString * string in allObject)
        {
            NSRange r = [string rangeOfString:searchText options:NSCaseInsensitiveSearch];
            if(r.location != NSNotFound)
            {
                [displayObject addObject:string];
            }
        }
    }
    
    [tableViewObj reloadData];
}

-(void) searchBarSearchButtonClicked:(UISearchBar *)searchBar{
	
    [searchBar setShowsCancelButton:NO animated:YES];
    [searchBar resignFirstResponder];
    tableViewObj.allowsSelection = YES;
    tableViewObj.scrollEnabled = YES;
    
}

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {
    [searchBar setShowsCancelButton:YES animated:YES];
   // tableViewObj.allowsSelection = NO;
    tableViewObj.scrollEnabled = NO;
}

- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
    searchBar.text=@"";
    
    [searchBar setShowsCancelButton:NO animated:YES];
    [searchBar resignFirstResponder];
    tableViewObj.allowsSelection = YES;
    tableViewObj.scrollEnabled = YES;
}

- (void)viewDidAppear:(BOOL)animated {
    //[searchBarObj becomeFirstResponder];
    //[super viewDidAppear:animated];
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)dealloc {
    [searchBarObj release];
    [tableViewObj release];
    [super dealloc];
}
@end