adding search to NSMutable Array with DetailView - uitableview

Question

i have project that I'm working on and i need to add search to my uitableview. i have been looking at lots of codes but mostly they are not what i am looking for and i can't modify them . can someone please help me with adding search to my tableview. also i want to push the detailview from searcharray. thank you in advance.
here is the .h uitableview
#import <UIKit/UIKit.h>
#interface Reds : UITableViewController {
NSMutableArray *dummyArray;
}
- (void) setupData;
#end
here is .m uitableview
#import "Reds.h"
#import "RedsDetail.h"
#interface Reds ()
#end
#implementation Reds
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self setupData];
}
- (void) setupData {
dummyArray = [[NSMutableArray alloc] init];
[dummyArray addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:#"dummy 1", #"name" , #"image1.JPG", #"image" , #"dummy 1 description textview", #"description", nil]];
[dummyArray addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:#"dummy 2", #"name" , #"image1.JPG", #"image" , #"dummy 2 description textview", #"description", nil]];
[dummyArray addObject:[[NSMutableDictionary alloc] initWithObjectsAndKeys:#"dummy 3", #"name" , #"image1.JPG", #"image" , #"dummy 3 description textview", #"description", nil]];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [dummyArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
cell.textLabel.text = [[dummyArray objectAtIndex:indexPath.row] objectForKey:#"name"];
return cell;
}
#pragma mark - Table view delegate
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([[segue identifier] isEqualToString:#"DummyDetail"]){
RedsDetail *dummyDetail = [segue destinationViewController];
NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
dummyDetail.dummyImageString = [[NSString alloc] initWithString:[[dummyArray objectAtIndex:indexPath.row] objectForKey:#"image"]];
dummyDetail.dummyTextString = [[NSString alloc] initWithString:[[dummyArray objectAtIndex:indexPath.row] objectForKey:#"description"]];
dummyDetail.title = [[NSString alloc] initWithString:[[dummyArray objectAtIndex:indexPath.row] objectForKey:#"name"]];
}
}
#end
here is the .h detailview
#import <UIKit/UIKit.h>
#interface RedsDetail : UIViewController {
IBOutlet UIImageView *dummyImage;
IBOutlet UITextView *dummyText;
NSString *dummyImageString;
NSString *dummyTextString;
}
#property (nonatomic, retain) NSString *dummyImageString;
#property (nonatomic, retain) NSString *dummyTextString;
#end
and finally the .m detailview
#import "RedsDetail.h"
#interface RedsDetail ()
#end
#implementation RedsDetail
#synthesize dummyImageString, dummyTextString;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
dummyImage.image = [UIImage imageNamed:dummyImageString];
dummyText.text = dummyTextString;
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#end
i know it might be a easy answer for most of you guys out there but i can't figure it out and i need help. i truly appreciate the time you guys spending in helping me. also i am using xcode 4.5 ios 6 storyboard if that makes a difference in your answers.
adrian

Answer 1

For the search, create a searchArray and a searchText, also you need a textfield that invokes the didChange method.
Use this to link the textfield to the didChange method:
[self.searchTextField addTarget:self action:#selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged];
Then in the didChange update the searchText and call the updateSearchArray.
-(void)textFieldDidChange:(UITextField*)textField
{
searchTextString = textField.text;
[self updateSearchArray];
}
In the updateSearchArray you compare go through the original array (dummyArray) and if the name is included in the search then add it to the searchArray.
-(void)updateSearchArray
{
if (searchTextString.length != 0) {
searchArray = [NSMutableArray array];
for ( NSDictionary* item in dummyArray ) {
if ([[[item objectForKey:#"name"] lowercaseString] rangeOfString:[searchTextString lowercaseString]].location != NSNotFound) {
[searchArray addObject:item];
}
}
} else {
searchArray = dummyArray;
}
[self.tableView reloadData];
}
Use the searchArray in the tableview methods where you now use the dummyArray.
Updated tableview methods
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return [searchArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
cell.textLabel.text = [[searchArray objectAtIndex:indexPath.row] objectForKey:#"name"];
return cell;
}
Also, you need to call a reloadData after adding all the data to the array. And added the updateSearchArray method
- (void)viewDidLoad
{
[super viewDidLoad];
[self setupData];
[self updateSearchArray];
[self.tableView reloadData];
}
To make it easier to implement this I have made a sample project. You can download it here: http://www.rolandkeesom.com/SearchExample.zip