SearchBar in UITableView - sorting array issue - objective-c

Question

I'm trying to integrate search bar with my remote table view but it didn't work properly. There were no errors. I think I did some mistakes but I don't know which part so I need your help.
This is my full code:
//
// MasterViewController.m
#import "MasterViewController.h"
#import "DetailViewController.h"
#import "SDWebImage/UIImageView+WebCache.h"
static NSString *const kConsumerKey = #"a1SNULSPtp4eLQTsTXKKSgXkYB5H4CMFXmleFvqE";
#interface MasterViewController ()<UISearchDisplayDelegate>
#property (nonatomic, assign) NSInteger currentPage;
#property (nonatomic, assign) NSInteger totalPages;
#property (nonatomic, assign) NSInteger totalItems;
#property (nonatomic, assign) NSInteger maxPages;
#property (nonatomic, strong) NSMutableArray *photos;
#property (nonatomic, strong) NSMutableArray *searchResults;
#property (strong, nonatomic) IBOutlet UISearchBar *searchBar;
#end
#implementation MasterViewController
- (void)awakeFromNib {
[super awakeFromNib];
}
- (void)viewDidLoad {
[super viewDidLoad];
self.photos = [NSMutableArray array];
self.searchResults = [NSMutableArray arrayWithCapacity:[self.photos count]];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
[self loadPhotos:self.currentPage];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Table View
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (self.currentPage == self.maxPages
|| self.currentPage == self.totalPages
|| self.currentPage == self.totalPages
|| self.totalItems == self.photos.count) {
return self.photos.count;
}else if(tableView == self.searchDisplayController.searchResultsTableView){
return [self.searchResults count];
}
return self.photos.count + 1;
}
- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath {
if (self.currentPage != self.maxPages && indexPath.row == [self.photos count] - 1 ) {
[self loadPhotos:++self.currentPage];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = nil;
if (indexPath.row == [self.photos count]) {
cell = [tableView dequeueReusableCellWithIdentifier:#"LoadingCell" forIndexPath:indexPath];
UIActivityIndicatorView *activityIndicator = (UIActivityIndicatorView *)[cell.contentView viewWithTag:100];
[activityIndicator startAnimating];
}else{
cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
if(tableView == self.searchDisplayController.searchResultsTableView) {
cell.textLabel.text = [self.searchResults objectAtIndex:indexPath.row];
}
NSDictionary *photoItem = self.photos[indexPath.row];
cell.textLabel.text = [photoItem objectForKey:#"name"];
if (![[photoItem objectForKey:#"description"] isEqual:[NSNull null]]) {
cell.detailTextLabel.text = [photoItem objectForKey:#"description"];
}
[cell.imageView sd_setImageWithURL:[NSURL URLWithString:[photoItem objectForKey:#"image_url"]]
placeholderImage:[UIImage imageNamed:#"placeholder.jpg"]
completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
if (error) {
NSLog(#"Error occured : %#", [error description]);
}
}];
}
return cell;
}
#pragma mark UISearchDisplay delegate
- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
[self.searchResults removeAllObjects];
NSPredicate *resultPredicate = [NSPredicate
predicateWithFormat:#"SELF contains[cd] %#",
searchText];
self.searchResults = [NSMutableArray arrayWithArray:[self.photos filteredArrayUsingPredicate:resultPredicate]];//[self.tableData filteredArrayUsingPredicate:resultPredicate];
}
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller
shouldReloadTableForSearchString:(NSString *)searchString
{
[self filterContentForSearchText:searchString
scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
objectAtIndex:[self.searchDisplayController.searchBar
selectedScopeButtonIndex]]];
return YES;
}
- (void)loadPhotos:(NSInteger)page {
NSString *apiURL = [NSString stringWithFormat:#"https://api.500px.com/v1/photos?feature=editors&page=%ld&consumer_key=%#",(long)page,kConsumerKey];
NSURLSession *session = [NSURLSession sharedSession];
[[session dataTaskWithURL:[NSURL URLWithString:apiURL]
completionHandler:^(NSData *data,
NSURLResponse *response,
NSError *error) {
if (!error) {
NSError *jsonError = nil;
NSMutableDictionary *jsonObject = (NSMutableDictionary *)[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&jsonError];
NSLog(#"%#",jsonObject);
[self.photos addObjectsFromArray:[jsonObject objectForKey:#"photos"]];
self.currentPage = [[jsonObject objectForKey:#"current_page"] integerValue];
self.totalPages = [[jsonObject objectForKey:#"total_pages"] integerValue];
self.totalItems = [[jsonObject objectForKey:#"total_items"] integerValue];
dispatch_async(dispatch_get_main_queue(), ^{
[self.tableView reloadData];
});
}
}] resume];
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
DetailViewController *vc = segue.destinationViewController;
NSIndexPath *indexPath = [self.tableView indexPathForCell:sender];
vc.StoreList = [_photos objectAtIndex:indexPath.row];
}
#end

Answer 1

NSDictionary *photoItem = self.photos[indexPath.row];
and later
NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:#"SELF contains[cd] %#", searchText];
self.searchResults = [NSMutableArray arrayWithArray:[self.photos filteredArrayUsingPredicate:resultPredicate]];
This looks like u try to sort with predicate not String but Dictionary.
Try :
NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:#"SELF.name contains[c] %#", searchText];
Also i'd recommend u to read this code style and here some tutorial how to implement search
Regarding ur second question
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell;
if (indexPath.row == [self.photos count]) {
cell = [tableView dequeueReusableCellWithIdentifier:#"LoadingCell" forIndexPath:indexPath];
UIActivityIndicatorView *activityIndicator = (UIActivityIndicatorView *)[cell.contentView viewWithTag:100];
[activityIndicator startAnimating];
} else{
cell = [tableView dequeueReusableCellWithIdentifier:#"Cell" forIndexPath:indexPath];
if(tableView == self.searchDisplayController.searchResultsTableView) {
cell.textLabel.text = [self.searchResults[indexPath.row] valueForKey:#"name"] } else {
NSDictionary *photoItem = self.photos[indexPath.row];
cell.textLabel.text = [photoItem objectForKey:#"name"];
if (![[photoItem objectForKey:#"description"] isEqual:[NSNull null]]) {
cell.detailTextLabel.text = [photoItem objectForKey:#"description"];
}
[cell.imageView sd_setImageWithURL:[NSURL URLWithString:[photoItem objectForKey:#"image_url"]]
placeholderImage:[UIImage imageNamed:#"placeholder.jpg"]
completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
if (error) {
NSLog(#"Error occured : %#", [error description]);
}
}];
}
}
return cell;
}