Working with UISearchBar Filterable TableView - ios

Question

I am pretty new in objective c so hopefully this all make sense.I have followed this video tutorial from YouTube.The program is not working .
You can download the project from this link.Guide me
to make this program functional.

Answer 1

use the following tutorial is the simple way to get the answer and and also u get the sample code in github, the link is http://www.appcoda.com/how-to-add-search-bar-uitableview/

Answer 2

in your view controller.h file
import
#interface RecipeBookViewController : UIViewController <UITableViewDelegate, UITableViewDataSource>
{
NSArray *recipes; //this is used for load the data to table
NSArray *searchResults; //this is used for search the particular name in uitableview
}
#property (nonatomic, strong) UITableView *tableView; //progrmatically allocationg the tableview
.m file
#synthesize tableView; //this is used accessing the name in more than one time
- (void)viewDidLoad
{
[super viewDidLoad];
// Initialize table data
searchResults=[NSArray alloc]init];
recipes = [NSArray arrayWithObjects:#"Egg Benedict", #"Mushroom Risotto", #"Full Breakfast", #"Hamburger", #"Green Tea", #"Thai Shrimp Cake", #"Angry Birds Cake", #"Ham and Cheese Panini", nil];
//create the tableview
tableView =[[UITableView alloc]initWithFrame:CGRectMake(0, 163, 320, 317)];
tableView.delegate=self;
tableView.dataSource=self;
[self. tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"cell"];
[self.view addSubview: tableView];
}
//this is for loading the table data
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (tableView == self.searchDisplayController.searchResultsTableView) {
return [searchResults count];
} else {
return [recipes count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
}
if (tableView == self.searchDisplayController.searchResultsTableView) {
cell.textLabel.text = [searchResults objectAtIndex:indexPath.row];
} else {
cell.textLabel.text = [recipes objectAtIndex:indexPath.row];
}
return cell;
}
//this is for search bar delegate method for filtering
- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
NSPredicate *resultPredicate = [NSPredicate
predicateWithFormat:#"SELF contains[cd] %#",
searchText];
searchResults = [recipes filteredArrayUsingPredicate:resultPredicate];
}
#pragma mark - UISearchDisplayController delegate methods
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller
shouldReloadTableForSearchString:(NSString *)searchString
{
[self filterContentForSearchText:searchString
scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
objectAtIndex: [self.searchDisplayController.searchBar
selectedScopeButtonIndex]]];
return YES;
}
finally add the one search bar display controller only in top on the view

Answer 3

- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar; // called when text starts editing
{
if (searching)
{
searching=YES;
letsUserSelectRow=YES;
}
else
{
searching=NO;
letsUserSelectRow=YES;
}
// self.tbl_searchtable.scrollEnabled=NO;
}
- (void)searchBarCancelButtonClicked:(UISearchBar *) searchBar
{
searching = NO;
letsUserSelectRow = YES;
searchBar.text = #"";
[searchBar resignFirstResponder];
[self.tbl_searchuser reloadData];
}
-(NSIndexPath *)tableView :(UITableView *)theTableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if(letsUserSelectRow)
return indexPath;
else
return nil;
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText; // called when text changes (including clear)
{
_tbl_searchuser.hidden=FALSE;
[copylistofitem removeAllObjects];
if([searchText length] > 0)
{
searching = YES;
letsUserSelectRow = YES;
self.tbl_searchuser.scrollEnabled = YES;
[self searchtableview];
}
else
{
searching = NO;
letsUserSelectRow= NO;
[_searchbar resignFirstResponder];
//self.tbl_searchtable.scrollEnabled = NO;
}
[copylistofitem retain];
[self.tbl_searchuser reloadData];
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar; // called when keyboard search button pressed
{
[self hide];
//[self searchtableview];
}
-(void)searchtableview
{
_tbl_searchuser.frame=CGRectMake(0, 65, 320, 140);
NSString *searchText = _searchbar.text;
NSLog(#"%#",array_allusers);
for(int l = 0; l < [array_allusers count]; l++)
{
NSString *tempstr = [[array_allusers objectAtIndex:l] objectForKey:#"username"];
NSRange rngstr = [tempstr rangeOfString:searchText options:(NSAnchoredSearch | NSCaseInsensitiveSearch)];
if(rngstr.length > 0)
{
[copylistofitem addObject:[array_allusers objectAtIndex:l]];
[copylistofitem retain];
}
}
NSLog(#"%#",copylistofitem);
NSSortDescriptor *sort = [NSSortDescriptor sortDescriptorWithKey:#"username" ascending:YES];
[copylistofitem sortUsingDescriptors:[NSArray arrayWithObject:sort]];
[_tbl_searchuser reloadData];
}
-(void)hide
{
[_searchbar resignFirstResponder];
_tbl_searchuser.frame=CGRectMake(0, 65, 320, 274);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (searching && [_searchbar.text length] > 0)
return [copylistofitem count];
else
return yourarray;
}
NSMutableArray *copylistofitem;
BOOL searching;
BOOL letsUserSelectRow;