Tableview

#import <UIKit/UIKit.h>
#import "Model.h"

@interface ViewController : UITableViewController 
{
	NSMutableArray *searchArray;
	UISearchBar *search;
	Model *model;
}
- (UIColor *) getColor: (NSString *) hexColor;
@end

@implementation ViewController

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
	return 1;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
	return [searchArray count];
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
	NSInteger row = [indexPath row];
	
	// Create a cell if one is not already available
	UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:@"any-cell"];
	if (cell == nil) 
	    cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:@"any-cell"] autorelease];
	
	// Set up the cell by coloring its text
	NSArray *crayon = [[searchArray objectAtIndex:row] componentsSeparatedByString:@"#"];
	cell.text = [crayon objectAtIndex:0];
	cell.textColor = [self getColor:[crayon objectAtIndex:1]];
	return cell;
}

// Deselect the current table row selection
- (void) deselect {	
	[self.tableView deselectRowAtIndexPath:[self.tableView indexPathForSelectedRow] animated:YES];
}

// Respond to user selection tap by coloring the navigation bar
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)newIndexPath
{
	// Retrieve named color
	int row = [newIndexPath row];
	NSArray *crayon = [[searchArray objectAtIndex:row] componentsSeparatedByString:@"#"];
	
	// Update the nav bar color
	UIColor *newColor = [self getColor:[crayon objectAtIndex:1]];
	self.navigationController.navigationBar.tintColor = newColor;
	search.tintColor = newColor;
	
	// Deselect
	[self performSelector:@selector(deselect) withObject:NULL afterDelay:0.5];
}

// When the search text changes, update the array
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
	[model buildSearchArrayFrom: searchText];
	searchArray = [model searchArray];
	[self.tableView reloadData];
	if ([searchText length] == 0) [searchBar resignFirstResponder];
}

// When the search button (i.e. "Done") is clicked, hide the keyboard
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
	[searchBar resignFirstResponder];
}

// Prepare the Table View
- (void)loadView {
	[super loadView];

	model = [Model new];
	[model buildSearchArrayFrom:@""];
	searchArray = [model searchArray];
	[self.tableView reloadData];
	
	search = [[UISearchBar alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 280.0f, 44.0f)];
	search.delegate = self;
	search.placeholder = @"color match text";
	search.autocorrectionType = UITextAutocorrectionTypeNo;
	search.autocapitalizationType = UITextAutocapitalizationTypeNone;
	self.navigationItem.titleView = search;
	[search release];

	// "Search" is the wrong key usage here. Replacing it with "Done"
	UITextField *searchField = [[search subviews] lastObject];
	[searchField setReturnKeyType: UIReturnKeyDone];
}

// Clean up
-(void) dealloc {
	[model release];
	[super dealloc];
}

// Convert a 6-character hex color to a UIColor object
- (UIColor *) getColor: (NSString *) hexColor
{
	unsigned int red, green, blue;
	NSRange range;
	range.length = 2;
	
	range.location = 0; 
	[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&red];
	range.location = 2; 
	[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&green];
	range.location = 4; 
	[[NSScanner scannerWithString:[hexColor substringWithRange:range]] scanHexInt:&blue];	
	
	return [UIColor colorWithRed:(float)(red/255.0f) 
			   green:(float)(green/255.0f) 
			   blue:(float)(blue/255.0f) alpha:1.0f];
}
@end

@interface AppDelegate : NSObject  
@end

@implementation AppDelegate
- (void)applicationDidFinishLaunching:(UIApplication *)application {	
	UIWindow *window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
	UINavigationController *nav = 
		[[UINavigationController alloc] initWithRootViewController:[[ViewController alloc] init]];
	[window addSubview: nav.view];
	[window makeKeyAndVisible];
}

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

int main(int argc, char *argv[])
{
	NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
	int retVal = UIApplicationMain(argc, argv, nil, @"AppDelegate");
	[pool release];
	return retVal;
}

#import <Foundation/Foundation.h>

@interface Model : NSObject
{
	NSMutableArray *colorArray;
	NSMutableArray *searchArray;
}
@property (readonly, nonatomic, retain) NSMutableArray *searchArray;
- (void) buildSearchArrayFrom: (NSString *) matchString;
@end

#import "Model.h"

@implementation Model
@synthesize searchArray;

// create an array by applying the search string
- (void) buildSearchArrayFrom: (NSString *) matchString
{
	NSString *upString = [[matchString uppercaseString] autorelease];
	if (searchArray) [searchArray release];
	
	searchArray = [[NSMutableArray alloc] init];
	for (NSString *word in colorArray)
	{
		if ([matchString length] == 0)
		{
			[searchArray addObject:word];
			continue;
		}
		
		NSRange range = [[[[word componentsSeparatedByString:@" #"] 
			                 objectAtIndex:0] uppercaseString] rangeOfString:upString];
		if (range.location != NSNotFound) [searchArray addObject:word];
	}
}

-(id) init {
	[super init];
	// Retrieve the text and colors from file
	NSString *pathname = [[NSBundle mainBundle]  pathForResource:@"crayons" 
               								        ofType:@"txt" 
									  inDirectory:@"/"];
	NSString *wordstring = [NSString stringWithContentsOfFile:pathname];
    	colorArray = [[wordstring componentsSeparatedByString:@"\n"] retain];
	[self buildSearchArrayFrom:@""];
	return self;
}

// Clean up
-(void) dealloc  {
	[colorArray release];
	[searchArray release];
	[super dealloc];
}
@end