Search In Table View

#import <UIKit/UIKit.h>

#define COOKBOOK_PURPLE_COLOR    [UIColor colorWithRed:0.20392f green:0.19607f blue:0.61176f alpha:1.0f]

#define CRAYON_NAME(CRAYON)           [[CRAYON componentsSeparatedByString:@"#"] objectAtIndex:0]

#define CRAYON_COLOR(CRAYON) [self getColor:[[CRAYON componentsSeparatedByString:@"#"] lastObject]]

#define DEFAULTKEYS [self.crayonColors.allKeys sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)]

#define FILTEREDKEYS [self.filteredArray sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)]

@interface TableListViewController : UITableViewController

{

         NSMutableDictionary *crayonColors;

         NSArray *filteredArray;

         UISearchBar *searchBar;

         UISearchDisplayController *searchDC;

}

@property (retain) NSMutableDictionary *crayonColors;

@property (retain) NSArray *filteredArray;

@property (retain) UISearchBar *searchBar;

@property (retain) UISearchDisplayController *searchDC;

@end

@implementation TableListViewController

@synthesize crayonColors;

@synthesize filteredArray;

@synthesize searchBar;

@synthesize searchDC;

- (NSInteger)numberOfSectionsInTableView:(UITableView *)aTableView

{

         return 1;

}

- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar

{

         [self.searchBar setText:@""];

}

- (NSInteger)tableView:(UITableView *)aTableView numberOfRowsInSection:(NSInteger)section

{

         // Normal table

         if (aTableView == self.tableView) return self.crayonColors.allKeys.count;

        

         // Search table

         NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF contains[cd] %@", self.searchBar.text];

         self.filteredArray = [self.crayonColors.allKeys filteredArrayUsingPredicate:predicate];

         return self.filteredArray.count;

}

// 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];

}

- (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

{

         // Dequeue or create a cell

         UITableViewCellStyle style =  UITableViewCellStyleDefault;

         UITableViewCell *cell = [aTableView dequeueReusableCellWithIdentifier:@"BaseCell"];

         if (!cell) cell = [[[UITableViewCell alloc] initWithStyle:style reuseIdentifier:@"BaseCell"] autorelease];

        

         // Retrieve the crayon and its color

         NSArray *keyCollection = (aTableView == self.tableView) ? DEFAULTKEYS : FILTEREDKEYS;

         NSString *crayon = [keyCollection objectAtIndex:indexPath.row];

         cell.textLabel.text = crayon;

         if (![crayon hasPrefix:@"White"])

            cell.textLabel.textColor = [self.crayonColors objectForKey:crayon];

         else

            cell.textLabel.textColor = [UIColor blackColor];

         return cell;

}

// Respond to user selections by updating tint colors

- (void)tableView:(UITableView *)aTableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath

{

         NSArray *keyCollection = (aTableView == self.tableView) ? DEFAULTKEYS : FILTEREDKEYS;

         NSString *crayon = [keyCollection objectAtIndex:indexPath.row];

         self.navigationController.navigationBar.tintColor = [self.crayonColors objectForKey:crayon];

         self.searchBar.tintColor = [self.crayonColors objectForKey:crayon];

}

- (void) viewDidLoad

{

         // Prepare the crayon color dictionary

         NSString *pathname = [[NSBundle mainBundle]  pathForResource:@"crayons" ofType:@"txt" inDirectory:@"/"];

         NSArray *rawCrayons = [[NSString stringWithContentsOfFile:pathname encoding:NSUTF8StringEncoding error:nil] componentsSeparatedByString:@"\n"];

         self.crayonColors = [NSMutableDictionary dictionary];

         for (NSString *string in rawCrayons)

            [self.crayonColors setObject:CRAYON_COLOR(string) forKey:CRAYON_NAME(string)];

        

         // Create a search bar

         self.searchBar = [[[UISearchBar alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 320.0f, 44.0f)] autorelease];

         self.searchBar.tintColor = COOKBOOK_PURPLE_COLOR;

         self.searchBar.autocorrectionType = UITextAutocorrectionTypeNo;

         self.searchBar.autocapitalizationType = UITextAutocapitalizationTypeNone;

         self.searchBar.keyboardType = UIKeyboardTypeAlphabet;

         self.tableView.tableHeaderView = self.searchBar;

        

         // Create the search display controller

         self.searchDC = [[[UISearchDisplayController alloc] initWithSearchBar:self.searchBar contentsController:self] autorelease];

         self.searchDC.searchResultsDataSource = self;

         self.searchDC.searchResultsDelegate = self;

}

@end

@interface TestBedAppDelegate : NSObject <UIApplicationDelegate>

@end

@implementation TestBedAppDelegate

- (void)applicationDidFinishLaunching:(UIApplication *)application

{       

        

         TableListViewController *tlvc = [[TableListViewController alloc] init];

         UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:tlvc];

         nav.navigationBar.tintColor = COOKBOOK_PURPLE_COLOR;

        

         UIWindow *window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

         [window addSubview:nav.view];

         [window makeKeyAndVisible];

}

@end

int main(int argc, char *argv[])

{

         NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

         int retVal = UIApplicationMain(argc, argv, nil, @"TestBedAppDelegate");

         [pool release];

         return retVal;

}