UISearchBar displays no results while typing in text - ios

Question

When my user searches an item in my UISearchBar, results are displayed if the full word typed into the bar matches one of the results. E.g. if "Panda" is typed in, Panda pops up in the tableView results. However if "Pan" is typed in, no results are shown. How can I make my search results filter work as the user is typing? Panda should be displayed even if just "pan" is typed in.
My filter code currently looks like this:
.m
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
NSPredicate *resultPredicate = [NSPredicate
predicateWithFormat:#"SELF contains[cd] %#",
searchText];
searchResults = [self.neighbourData filteredArrayUsingPredicate:resultPredicate];
}
/*
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller
shouldReloadTableForSearchString:(NSString *)searchString
{
[self filterContentForSearchText:searchString
scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
objectAtIndex:[self.searchDisplayController.searchBar
selectedScopeButtonIndex]]];
return YES;
} */
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (tableView == self.searchDisplayController.searchResultsTableView) {
return [searchResults count];
} else {
return [self.neighbourData count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *NetworkTableIdentifier = #"sidebarCell";
self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
sidebarCell *cell = (sidebarCell *)[tableView dequeueReusableCellWithIdentifier:NetworkTableIdentifier];
if (cell == nil)
{
NSArray *nib = [[NSBundle mainBundle] loadNibNamed:#"sidebarCell" owner:self options:nil];
cell = [nib objectAtIndex:0];
}
if (tableView == self.searchDisplayController.searchResultsTableView) {
NSDictionary *userName = [searchResults objectAtIndex:indexPath.row];
[[cell username] setText:[userName objectForKey:#"first name"]];
NSDictionary *userlast = [searchResults objectAtIndex:indexPath.row];
[[cell lastName] setText:[userlast objectForKey:#"last name"]];
NSDictionary *userBio = [searchResults objectAtIndex:indexPath.row];
[[cell userDescription] setText:[userBio objectForKey:#"userbio"]];
NSString *profilePath = [[searchResults objectAtIndex:indexPath.row] objectForKey:#"photo_path"];
[cell.usermini sd_setImageWithURL:[NSURL URLWithString:profilePath]];
NSLog(#"This is profilePath %#",profilePath);
} else {
NSDictionary *userName = [self.neighbourData objectAtIndex:indexPath.row];
[[cell username] setText:[userName objectForKey:#"first name"]];
NSDictionary *userlast = [self.neighbourData objectAtIndex:indexPath.row];
[[cell lastName] setText:[userlast objectForKey:#"last name"]];
NSDictionary *userBio = [self.neighbourData objectAtIndex:indexPath.row];
[[cell userDescription] setText:[userBio objectForKey:#"userbio"]];
NSString *profilePath = [[self.neighbourData objectAtIndex:indexPath.row] objectForKey:#"photo_path"];
[cell.usermini sd_setImageWithURL:[NSURL URLWithString:profilePath]];
NSLog(#"This is profilePath %#",profilePath);
}
return cell;
}
- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 115;
}
neighbourData Log:
[12663:3559832] This is the neighbourdata (
{
address = "1144 fake street";
city = Las Vegas;
"first name" = Panda;
"last name" = Zoo;
"photo_path" = "none";
}

Answer 1

try this
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
NSPredicate * predicate =[NSPredicate predicateWithFormat:#"%K contains[cd] %#",#"first name", searchText];
searchResults = [self.neighbourData filteredArrayUsingPredicate:resultPredicate];
if searchResults.count == 0
{
NSPredicate * predicate =[NSPredicate predicateWithFormat:#"%K contains[cd] %#",#"last name",searchText];
searchResults = [self.neighbourData filteredArrayUsingPredicate:resultPredicate];
}
// add predicates for other keys also if you want
[tableView reloadData];
}
Suggestions:
Avoid spaces between words of keys ('first name' this is not recommended, 'firstName' recommended)
And save values in all lowercase ('Panda', 'Zoo' its better to save as 'panda','zoo' this will make search more simpler)

Answer 2

You need to reload your tableview after your data filtered and also remove exist object for searchResult array.
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
NSPredicate * predicate =[NSPredicate predicateWithFormat:#"first name = %#", searchText];
searchResults = [self.neighbourData filteredArrayUsingPredicate:resultPredicate];
[tableView reloadData];
}

Answer 3

Try out this predicate block:
NSPredicate* p = [NSPredicate predicateWithBlock:
^BOOL(id obj, NSDictionary *d) {
NSString* s = obj;
NSStringCompareOptions options = NSCaseInsensitiveSearch;
return ([s rangeOfString:sbc.searchBar.text
options:options].location != NSNotFound);
}];
self.filteredStates = [states filteredArrayUsingPredicate:p];
Meanwhile checkout this Link.
Hope it helps.

Answer 4

The method "filterContentForSearchText" should be in "textDidChange" method of UISearchBar. Where are you writing this method currently?
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
#interface ViewController : UIViewController <UITextFieldDelegate, UITableViewDelegate, UITableViewDataSource, UISearchDisplayDelegate, UISearchBarDelegate>
#property (weak, nonatomic) IBOutlet UITableView *tableView;
#property (strong, nonatomic) IBOutlet UISearchDisplayController *searchDisplayController;
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.neighbourData = #[#"Apple", #"App", #"Bell"];
NSUserDefaults * userDefaults = [NSUserDefaults standardUserDefaults];
[self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"filterCell"];
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
NSPredicate *resultPredicate = [NSPredicate
predicateWithFormat:#"SELF contains[cd] %#",
searchText];
self.searchResults = [self.neighbourData filteredArrayUsingPredicate:resultPredicate];
}
/*
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller
shouldReloadTableForSearchString:(NSString *)searchString
{
[self filterContentForSearchText:searchString
scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
objectAtIndex:[self.searchDisplayController.searchBar
selectedScopeButtonIndex]]];
return YES;
} */
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (tableView == self.searchDisplayController.searchResultsTableView) {
return [self.searchResults count];
} else {
return [self.neighbourData count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell * cell = [tableView dequeueReusableCellWithIdentifier:#"filterCell"];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:#"filterCell"];
}
if (tableView == self.searchDisplayController.searchResultsTableView) {
cell.textLabel. text = [self.searchResults objectAtIndex:indexPath.row];
} else {
cell.textLabel. text = [self.neighbourData objectAtIndex:indexPath.row];
}
return cell;
#end