SearchBar and Mysql - ios

Question

New to iOS...i am trying to do a search with a downloaded NSMutableArray table using searchbar or do need to get search from mysql table...its driving me nuts here is code below...any help would be appreciated
#import "VendorViewController.h"
#import "VendLocation.h"
#import "VendorDetailController.h"
#interface VendorViewController ()
{
VendorModel *_VendorModel; NSMutableArray *_feedItems; VendLocation *_selectedLocation; UIRefreshControl *refreshControl;
}
#property (nonatomic, weak) IBOutlet UISearchBar *searchBar;
#end
#implementation VendorViewController
//#synthesize item;
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = #"Vendors";
self.searchBar.hidden = YES;
self.searchBar.delegate = self;
self.searchBar.barTintColor = [UIColor clearColor];
//self.searchBar.barTintColor = [UIColor orangeColor];
_feedItems = [[NSMutableArray alloc] init];
_VendorModel = [[VendorModel alloc] init];
_VendorModel.delegate = self;
[_VendorModel downloadItems];
#pragma mark Bar Button
UIBarButtonItem *searchItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemSearch target:self action:#selector(searchButton:)];
NSArray *actionButtonItems = #[searchItem];
self.navigationItem.rightBarButtonItems = actionButtonItems;
#pragma mark Table Refresh
UIView *refreshView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, self.view.bounds.size.width, self.view.bounds.size.height)];
[self.tableView insertSubview:refreshView atIndex:0]; //the tableView is a IBOutlet
refreshControl = [[UIRefreshControl alloc] init];
refreshControl.backgroundColor = [UIColor grayColor];
refreshControl.tintColor = [UIColor whiteColor];
[refreshControl addTarget:self action:#selector(reloadDatas) forControlEvents:UIControlEventValueChanged];
NSMutableAttributedString *refreshString = [[NSMutableAttributedString alloc] initWithString:#"Refreshing"];
//add date to refresh
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:#"MMM d, h:mm a"];
NSString *lastUpdated = [NSString stringWithFormat:#"Last updated on %#", [formatter stringFromDate:[NSDate date]]];
refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:lastUpdated];
[refreshString addAttributes:#{NSForegroundColorAttributeName : [UIColor whiteColor]} range:NSMakeRange(0, refreshString.length)];
[refreshView addSubview:refreshControl];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
**#pragma mark - Search
- (void)searchButton:(id)sender{
[self.searchBar becomeFirstResponder];
self.searchBar.hidden = NO;
//[self.listTableView resignFirstResponder];
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar{
self.searchBar.hidden = YES;
}
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
if(searchText.length == 0)
{
isFilltered = NO;
} else {
isFilltered = YES;
filteredString = [[NSMutableArray alloc]init];
for(NSString *vendorName in _feedItems)
{
NSRange vendorNameRange = [vendorName rangeOfString:searchText options:NSCaseInsensitiveSearch];
if(vendorNameRange.location != NSNotFound) {
[filteredString addObject:vendorName];
}
}
}
[self.listTableView reloadData];
}**
#pragma mark - Table
-(void)reloadDatas {
[refreshControl endRefreshing];
}
-(void)itemsDownloaded:(NSMutableArray *)items
{ // This delegate method will get called when the items are finished downloading
_feedItems = items;
[self.listTableView reloadData];
}
#pragma mark Table Delete Button
- (UITableViewCellEditingStyle)tableView:(UITableView *)tableView
editingStyleForRowAtIndexPath:(NSIndexPath *)indexPath{
return UITableViewCellEditingStyleDelete;
}
- (void) setEditing:(BOOL)editing
animated:(BOOL)animated{
[super setEditing:editing
animated:animated];
[self.listTableView setEditing:editing
animated:animated];
}
-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath{
if (editingStyle == UITableViewCellEditingStyleDelete) {
[_feedItems removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:#[indexPath]
withRowAnimation:UITableViewRowAnimationLeft];
[self.tableView reloadData];
/*
NSError *error = nil;
if (![tableView save:&error]) {
NSLog(#"Can't Delete! %# %#", error, [error localizedDescription]);
return;
} */
}
}
#pragma mark TableView Delegate Methods
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (isFilltered) {
return [filteredString count];
}
return _feedItems.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
VendLocation *item = _feedItems[indexPath.row];
static NSString *CellIdentifier = #"BasicCell";
UITableViewCell *myCell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
myCell.layer.cornerRadius = 5;
myCell.layer.masksToBounds = YES;
if (myCell == nil) {
myCell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; }
if (!isFilltered) {
myCell.textLabel.text = item.vendorName;
myCell.detailTextLabel.text = item.vendorNo;
//Retreive an image
UIImage *myImage = [UIImage imageNamed:#"DemoCellImage"];
[myCell.imageView setImage:myImage];
} else {
myCell.textLabel.text = [filteredString objectAtIndex:indexPath.row];
myCell.detailTextLabel.text = nil;
}
return myCell;
}
#pragma mark Tableheader
-(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {
return 55.0;
}
-(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section
{
NSString *newString = [NSString stringWithFormat:#"VENDOR \n%lu", (unsigned long) _feedItems.count];
NSString *newString1 = [NSString stringWithFormat:#"NASDAQ \n4,727.35"];
NSString *newString2 = [NSString stringWithFormat:#"DOW \n17,776.80"];
UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, tableView.frame.size.width, 0)];
tableView.tableHeaderView = view; //makes header move with tablecell
[view setBackgroundColor:[UIColor clearColor]];
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(12, 3, tableView.frame.size.width, 45)];
[label setFont:[UIFont systemFontOfSize:12]];
[label setTextColor:[UIColor whiteColor]];
label.numberOfLines = 0;
NSString *string = newString;
[label setText:string];
[view addSubview:label];
UIView* separatorLineView = [[UIView alloc] initWithFrame:CGRectMake(12, 45, 60, 1.5)];
separatorLineView.backgroundColor = [UIColor redColor];
[view addSubview:separatorLineView];
UILabel *label1 = [[UILabel alloc] initWithFrame:CGRectMake(85, 3, tableView.frame.size.width, 45)];
label1.numberOfLines = 0;
[label1 setFont:[UIFont systemFontOfSize:12]];
[label1 setTextColor:[UIColor whiteColor]];
NSString *string1 = newString1;
[label1 setText:string1];
[view addSubview:label1];
UIView* separatorLineView1 = [[UIView alloc] initWithFrame:CGRectMake(85, 45, 60, 1.5)];
separatorLineView1.backgroundColor = [UIColor redColor];
[view addSubview:separatorLineView1];
UILabel *label2 = [[UILabel alloc] initWithFrame:CGRectMake(158, 3, tableView.frame.size.width, 45)];
label2.numberOfLines = 0;
[label2 setFont:[UIFont systemFontOfSize:12]];
[label2 setTextColor:[UIColor whiteColor]];
NSString *string2 = newString2;
[label2 setText:string2];
[view addSubview:label2];
UIView* separatorLineView2 = [[UIView alloc] initWithFrame:CGRectMake(158, 45, 60, 1.5)];
separatorLineView2.backgroundColor = [UIColor redColor];
[view addSubview:separatorLineView2];
return view;
}
here is my header
#import <UIKit/UIKit.h>
#import "VendorModel.h"
#interface VendorViewController : UIViewController <UITableViewDataSource, UITableViewDelegate, UISearchBarDelegate, VendorModelProtocol>
{
// NSMutableArray *_feedItems;
NSMutableArray *filteredString;
BOOL isFilltered;
}
#property (weak, nonatomic) IBOutlet UITableView *listTableView;
#property (weak, nonatomic) IBOutlet UITableView *tableView;
#end
Changed Code to textDidChange
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
if(searchText.length == 0)
{
isFilltered = NO;
} else {
isFilltered = YES;
filteredString = [[NSMutableArray alloc]init];
for(VendLocation* vendor in _feedItems)
{
NSRange stringRange = [vendor.vendorName rangeOfString:searchText options:NSCaseInsensitiveSearch];
if(stringRange.location != NSNotFound) {
[filteredString addObject:vendor];
}
}
}
[self.tableView reloadData];
}
i changed filter too this code still no luck hit a key and crash
if(searchText.length == 0)
{
isFilltered = NO;
[filteredString removeAllObjects];
[filteredString addObjectsFromArray:_feedItems];
} else {
isFilltered = YES;
// filteredString = [[NSMutableArray alloc]init];
[filteredString removeAllObjects];
for(NSString* string in _feedItems)
{
NSRange stringRange = [string rangeOfString:searchText options:NSCaseInsensitiveSearch];
if(stringRange.location != NSNotFound) {
[filteredString addObject:string];
}
}
}
[self.tableView reloadData];

Answer 1

If you already have a downloaded NSMutableArray with data in it then your search can consist of merely searching through the array and filtering out entries that do not match. You do not have to go back to MySQL.