Search results are not showing - ios

Question

I am new in iOS developing. In my project I have taken a tableView and a search bar. Now when I am searching one of the datas of my tableview, no search results are coming. Can anyone please solve my problem?
Any help will be appreciated. Thanks in advance.
This is my ViewController.h
#import <UIKit/UIKit.h>
#interface ViewController : UIViewController
#property(strong, nonatomic) NSMutableData *postData;
#property(nonatomic, strong)NSArray *arrDetail;
#property(nonatomic, strong)NSArray *searchResults;
#property (weak, nonatomic) IBOutlet UITableView *parserTable;
#property (strong, nonatomic) IBOutlet UIActivityIndicatorView *mySpinner;
#end
This is my ViewController.m
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
_mySpinner.hidden = NO;
[self fetchData];
// Do any additional setup after loading the view, typically from a nib.
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (BOOL)prefersStatusBarHidden {
return YES;
}
- (void) fetchData {
[_mySpinner startAnimating];
NSString *post = [NSString stringWithFormat:#"test=Message&this=isNotReal"];
_postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:#"%d", [_postData length]];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:#"http://svn.indusnettechnologies.com/HHC/webservice/users/countrylist?apiKey=hgfyhfyi87hgc67"]];
[request setHTTPMethod:#"POST"];
[request setValue:postLength forHTTPHeaderField:#"Content-Length"];
[request setHTTPBody:_postData];
NSURLResponse *requestResponse;
NSData *requestHandler = [NSURLConnection sendSynchronousRequest:request returningResponse:&requestResponse error:nil];
NSString *requestReply = [[NSString alloc] initWithBytes:[requestHandler bytes] length:[requestHandler length] encoding:NSASCIIStringEncoding];
NSLog(#"requestReply: %#", requestReply);
NSURLConnection *conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
if (conn) {
_postData = [NSMutableData data];
}
else{
//error
}
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response {
// A response has been received, this is where we initialize the instance var you created
// so that we can append data to it in the didReceiveData method
// Furthermore, this method is called each time there is a redirect so reinitializing it
// also serves to clear it
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
// Append the new data to the instance variable you declared
[_postData appendData:data];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
// The request is complete and data has been received
// You can parse the stuff in your instance variable now
// self.data parse
NSDictionary *dict= [NSJSONSerialization JSONObjectWithData:self.postData options:kNilOptions error:nil];
self.arrDetail = [dict valueForKey:#"Countries"];
[self.mySpinner stopAnimating];
self.mySpinner.hidden = YES;
[self.parserTable reloadData];
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
// The request has failed for some reason!
// Check the error var
}
#pragma mark Table View Delegates
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"tableCell"];
UILabel *lbl1 = (UILabel*)[cell.contentView viewWithTag:2];
lbl1.text = [[self.arrDetail objectAtIndex:indexPath.row]valueForKey:#"CountryCode"];
UILabel *lbl2 = (UILabel*)[cell.contentView viewWithTag:1];
lbl2.text = [[self.arrDetail objectAtIndex:indexPath.row]valueForKey:#"CountryName"];
UILabel *lbl3 = (UILabel*)[cell.contentView viewWithTag:3];
lbl3.text = [NSString stringWithFormat:#"%d.", indexPath.row];
return cell;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
//return [self.arrDetail count];
if (tableView == self.searchDisplayController.searchResultsTableView) {
return [_searchResults count];
} else {
return [_arrDetail count];
}
}
- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
NSPredicate *resultPredicate = [NSPredicate
predicateWithFormat:#"SELF contains[cd] %#",
searchText];
_searchResults = [_arrDetail 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;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#end

Answer 1

Change following method like I have done:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"tableCell"];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
NSMutableDictionary * tempDict;
if (tableView == self.searchDisplayController.searchResultsTableView)
{
tempDict = [_searchResults objectAtIndex:indexPath.row];
}
else
{
tempDict = [_arrDetail objectAtIndex:indexPath.row];
}
UILabel *lbl1 = (UILabel*)[cell.contentView viewWithTag:2];
lbl1.text = [tempDict valueForKey:#"CountryCode"];
UILabel *lbl2 = (UILabel*)[cell.contentView viewWithTag:1];
lbl2.text = [tempDict valueForKey:#"CountryName"];
UILabel *lbl3 = (UILabel*)[cell.contentView viewWithTag:3];
lbl3.text = [NSString stringWithFormat:#"%d.", indexPath.row];
return cell;
}
Problem is also in your predicate. change it
- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
//country_name and country_code are keys in your dictionary of country
NSPredicate *p1 = [NSPredicate predicateWithFormat:#"country_name contains[cd] %#", searchText];
NSPredicate *p2 = [NSPredicate predicateWithFormat:#"country_code contains[cd] %#", searchText];
NSPredicate *resultPredicate = [NSCompoundPredicate orPredicateWithSubpredicates: #[p1, p2]];
_searchResults = [_arrDetail filteredArrayUsingPredicate:resultPredicate];
}