Hi,

I'm fairly new at iOS programming, but I managed to make a (in my opinion quite nice) app for the app store. The main function for my next update will be a search option for the app. I followed a tutorial I found on the internet and adapted it to fit my app. I got back quite some errors, most of which I managed to fix. But now I'm completely stuck and don't know what to do next. I know it's a lot to ask, but if anyone could take a look at the code underneath, it would be greatly appreciated.

Thanks!

//
//  RootViewController.m
//  GGZ info
//
//  Created by Thijs Beckers on 29-12-10.
//  Copyright 2010 __MyCompanyName__. All rights reserved.
//

#import "RootViewController.h"
// Always import the next level view controller header(s)
#import "CourseCodes.h"

@implementation RootViewController

@synthesize dataForCurrentLevel, tableViewData;

#pragma mark -
#pragma mark View lifecycle




// OVERRIDE METHOD
- (void)viewDidLoad {
    [super viewDidLoad];

    // Go get the data for the app...

    // Create a custom string that points to the right location in the app bundle

    NSString *pathToPlist = [[NSBundle mainBundle] pathForResource:@"SCSCurriculum" ofType:@"plist"];

    // Now, place the result into the dictionary property
    // Note that we must retain it to keep it around
    dataForCurrentLevel = [[NSDictionary dictionaryWithContentsOfFile:pathToPlist] retain];

    // Place the top level keys (the program codes) in an array for the table view
    // Note that we must retain it to keep it around
    // NSDictionary has a really useful instance method - allKeys
    // The allKeys method returns an array with all of the keys found in (this level of) a dictionary
    tableViewData = [[[dataForCurrentLevel allKeys] sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)] retain];   


    //Initialize the copy array.
    copyListOfItems = [[NSMutableArray alloc] init];

    // Set the nav bar title
    self.title = @"GGZ info";

    //Add the search bar
    self.tableView.tableHeaderView = searchBar;
    searchBar.autocorrectionType = UITextAutocorrectionTypeNo;

    searching = NO;
    letUserSelectRow = YES;
}

/*
- (void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
}
*/
/*
- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
}
*/
/*
- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
}
*/
/*
- (void)viewDidDisappear:(BOOL)animated {
    [super viewDidDisappear:animated];
}
*/

//RootViewController.m
- (void) searchBarTextDidBeginEditing:(UISearchBar *)theSearchBar {

    searching = YES;
    letUserSelectRow = NO;
    self.tableView.scrollEnabled = NO;

    //Add the done button.
    self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc]
                                               initWithBarButtonSystemItem:UIBarButtonSystemItemDone
                                               target:self action:@selector(doneSearching_Clicked:)] autorelease];
}

- (NSIndexPath *)tableView :(UITableView *)theTableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    if(letUserSelectRow)
        return indexPath;
    else
        return nil;
}

//RootViewController.m
- (void)searchBar:(UISearchBar *)theSearchBar textDidChange:(NSString *)searchText {

    //Remove all objects first.
    [copyListOfItems removeAllObjects];

    if([searchText length] > 0) {

        searching = YES;
        letUserSelectRow = YES;
        self.tableView.scrollEnabled = YES;
        [self searchTableView];
    }
    else {

        searching = NO;
        letUserSelectRow = NO;
        self.tableView.scrollEnabled = NO;
    }

    [self.tableView reloadData];
}

//RootViewController.m
- (void) searchBarSearchButtonClicked:(UISearchBar *)theSearchBar {

    [self searchTableView];
}

- (void) searchTableView {

    NSString *searchText = searchBar.text;
    NSMutableArray *searchArray = [[NSMutableArray alloc] init];

    for (NSDictionary *dictionary in listOfItems)
    {
        NSArray *array = [dictionary objectForKey:@"Countries"];
        [searchArray addObjectsFromArray:array];
    }

    for (NSString *sTemp in searchArray)
    {
        NSRange titleResultsRange = [sTemp rangeOfString:searchText options:NSCaseInsensitiveSearch];

        if (titleResultsRange.length > 0)
            [copyListOfItems addObject:sTemp];
    }

    [searchArray release];
    searchArray = nil;
}

//RootViewController.m
- (void) doneSearching_Clicked:(id)sender {

    searchBar.text = @"";
    [searchBar resignFirstResponder];

    letUserSelectRow = YES;
    searching = NO;
    self.navigationItem.rightBarButtonItem = nil;
    self.tableView.scrollEnabled = YES;

    [self.tableView reloadData];
}

//RootViewController.m
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {

    if (searching)
        return 1;
    else
        return [listOfItems count];
}

// Customize the number of rows in the table view.
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {

    if (searching)
        return [copyListOfItems count];
    else {

        //Number of rows it should expect should be based on the section
        NSDictionary *dictionary = [listOfItems objectAtIndex:section];
        NSArray *array = [dictionary objectForKey:@"Countries"];
        return [array count];
    }
}

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {

    if(searching)
        return @"";

    if(section == 0)
        return @"Countries to visit";
    else
        return @"Countries visited";
}

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithFrame:CGRectZero reuseIdentifier:CellIdentifier] autorelease];
    }

    // Set up the cell...

    if(searching)
        cell.text = [copyListOfItems objectAtIndex:indexPath.row];
    else {

        //First get the dictionary object
        NSDictionary *dictionary = [listOfItems objectAtIndex:indexPath.section];
        NSArray *array = [dictionary objectForKey:@"Countries"];
        NSString *cellValue = [array objectAtIndex:indexPath.row];
        cell.text = cellValue;
    }

    return cell;
}

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

    //Get the selected country

    NSString *selectedCountry = nil;

    if(searching)
        selectedCountry = [copyListOfItems objectAtIndex:indexPath.row];
    else {

        NSDictionary *dictionary = [listOfItems objectAtIndex:indexPath.section];
        NSArray *array = [dictionary objectForKey:@"Countries"];
        selectedCountry = [array objectAtIndex:indexPath.row];
    }

    //Initialize the detail view controller and display it.
    DetailViewController *dvController = [[DetailViewController alloc] initWithNibName:@"DetailView" bundle:[NSBundle mainBundle]];
    dvController.selectedCountry = selectedCountry;
    [self.navigationController pushViewController:dvController animated:YES];
    [dvController release];
    dvController = nil;
}

//RootViewController.m
- (void) searchBarTextDidBeginEditing:(UISearchBar *)theSearchBar {

    //Add the overlay view.
    if(ovController == nil)
        ovController = [[OverlayViewController alloc] initWithNibName:@"OverlayView" bundle:[NSBundle mainBundle]];

    CGFloat yaxis = self.navigationController.navigationBar.frame.size.height;
    CGFloat width = self.view.frame.size.width;
    CGFloat height = self.view.frame.size.height;

    //Parameters x = origion on x-axis, y = origon on y-axis.
    CGRect frame = CGRectMake(0, yaxis, width, height);
    ovController.view.frame = frame;
    ovController.view.backgroundColor = [UIColor grayColor];
    ovController.view.alpha = 0.5;

    ovController.rvController = self;

    [self.tableView insertSubview:ovController.view aboveSubview:self.parentViewController.view];

    searching = YES;
    letUserSelectRow = NO;
    self.tableView.scrollEnabled = NO;

    //Add the done button.
    self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc]
                                               initWithBarButtonSystemItem:UIBarButtonSystemItemDone
                                               target:self action:@selector(doneSearching_Clicked:)] autorelease];
}


 // Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    // Return YES for supported orientations.
    return YES;
}

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Relinquish ownership any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
    // Relinquish ownership of anything that can be recreated in viewDidLoad or on demand.
    // For example: self.myOutlet = nil;
}


- (void)dealloc {
    [dataForCurrentLevel release];
    [tableViewData release];

    [super dealloc];
}

#pragma mark -
#pragma mark Table view methods

// DATA SOURCE METHOD
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}

// DATA SOURCE METHOD
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    // How many rows should be displayed?
    return [tableViewData count];
}

// DELEGATE METHOD
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    // Cell reuse block
    static NSString *CellIdentifier = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
    }

    // Configure the cell's contents - we want the program code, and a disclosure indicator
    cell.textLabel.text = [tableViewData objectAtIndex:indexPath.row];
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;

    return cell;
}

//RootViewController.m
- (void)searchBar:(UISearchBar *)theSearchBar textDidChange:(NSString *)searchText {

    //Remove all objects first.
    [copyListOfItems removeAllObjects];

    if([searchText length] > 0) {

        [ovController.view removeFromSuperview];
        searching = YES;
        letUserSelectRow = YES;
        self.tableView.scrollEnabled = YES;
        [self searchTableView];
    }
    else {

        [self.tableView insertSubview:ovController.view aboveSubview:self.parentViewController.view];

        searching = NO;
        letUserSelectRow = NO;
        self.tableView.scrollEnabled = NO;
    }

    [self.tableView reloadData];
}

//RootViewController.m
- (void) doneSearching_Clicked:(id)sender {

    searchBar.text = @"";
    [searchBar resignFirstResponder];

    letUserSelectRow = YES;
    searching = NO;
    self.navigationItem.rightBarButtonItem = nil;
    self.tableView.scrollEnabled = YES;

    [ovController.view removeFromSuperview];
    [ovController release];
    ovController = nil;

    [self.tableView reloadData];
}

// DELEGATE METHOD
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

    // In any navigation-based application, you follow the same pattern: 
    // 1. Create an instance of the next-level view controller 
    // 2. Configure that instance, with settings and data if necessary
    // 3. Push it on to the navigation stack 

    // In this situation, the next level view controller is another table view
    // Therefore, we really don't need a nib file (do you see a CourseCodes.xib? no, there isn't one)
    // So, a UITableViewController offers an initializer that programmatically creates a view

    // 1. Create the next level view controller
    // ========================================
    CourseCodes *nextVC = [[CourseCodes alloc] initWithStyle:UITableViewStylePlain];

    // 2. Configure it...
    // ==================

    // It needs data from the dictionary - the "value" for the current "key" (that was tapped)
    NSDictionary *nextLevelDictionary = [dataForCurrentLevel objectForKey:[tableViewData objectAtIndex:indexPath.row]];
    nextVC.dataForCurrentLevel = nextLevelDictionary;


    // Set the view title
    nextVC.title = [tableViewData objectAtIndex:indexPath.row];

    // 3. Push it on to the navigation stack
    // =====================================
    [self.navigationController pushViewController:nextVC animated:YES];

    // Memory manage it
    [nextVC release];

}

/*
// Override to support conditional editing of the table view.
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the specified item to be editable.
    return YES;
}
*/

/*
// Override to support editing the table view.
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {

    if (editingStyle == UITableViewCellEditingStyleDelete) {
        // Delete the row from the data source.
        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationFade];
    }   
    else if (editingStyle == UITableViewCellEditingStyleInsert) {
        // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view.
    }   
}
*/

/*
// Override to support rearranging the table view.
- (void)tableView:(UITableView *)tableView moveRowAtIndexPath:(NSIndexPath *)fromIndexPath toIndexPath:(NSIndexPath *)toIndexPath {
}
*/

/*
// Override to support conditional rearranging of the table view.
- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
    // Return NO if you do not want the item to be re-orderable.
    return YES;
}
*/

@end