NSPredicate search through NSMutableArray - ios

Question

I have a view controller that retrieves address information from my web service, stores it in a mutable array and then displays each address in a table view. I have a search bar on the same view controller that i'd like to search through each of the addresses and display the results. I have this working with a test NSArray, however I'm not sure what I need to do to the filterContentForSearchText function to get it to search through an NSMutableArray. Any help appreciated.
Object Class
// Branches.h
#interface Branches : NSObject
#property (nonatomic, retain) NSString *BranchAddress;
#end
View Controller Class
// ViewController.h
#interface ViewController : UIViewController <UITableViewDataSource, UITableViewDelegate, UISearchDisplayDelegate>
#property (weak, nonatomic) IBOutlet UITableView *tableView;
#end
.
// ViewController.m
#import "AFHTTPRequestOperationManager.h"
#import "ViewController.h"
#import "Branches.h"
#interface ViewController () {
NSMutableArray *array;
}
#property (strong, nonatomic) NSArray *searchResults;
#end
#implementation ViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Initialize myArray
array = [[NSMutableArray alloc] init];
// Set POST parameters
NSDictionary *parameters = #{#"key" : #"value"};
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager POST:#"webservice_address" parameters:parameters success:^(AFHTTPRequestOperation *operation, id responseObject) {
// Check to see if responseObject contains data
if (responseObject != nil) {
// Loop through JSON
for (NSDictionary *dictionary in responseObject) {
// Initialize object
Branches *branches = [[Branches alloc] init];
branches.branchAddress = [dictionary objectForKey:#"Object"];
// Add object to myArray
[array addObject:branches];
[self.tableView reloadData];
}
}
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Error: %#", error);
}];
}
#pragma Table View Methods
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (tableView == self.searchDisplayController.searchResultsTableView) {
return [self.searchResults count];
} else {
return [array count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellID = #"cellID";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellID];
}
if (tableView == self.searchDisplayController.searchResultsTableView) {
cell.textLabel.text = [self.searchResults objectAtIndex:indexPath.row];
} else {
cell.textLabel.text = [[array objectAtIndex:indexPath.row] BranchAddress];
}
return cell;
}
#pragma Search Methods
- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
NSArray *masterArray = array;
NSArray *searchResults = [masterArray filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(Branches *evaluatedObject, NSDictionary *bindings) {
//NSLog(#"%#", evaluatedObject.BranchAddress);
return ([evaluatedObject.BranchAddress rangeOfString: searchText options:NSCaseInsensitiveSearch].location != NSNotFound);
}]];
NSLog(#" %i", searchResults.count);
//[searchResults removeAllObjects];
//[searchResults addObjectsFromArray:searchResults];
//reload after this
NSLog(#"%#", [searchResults objectAtIndex:0]);
}
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
[self filterContentForSearchText:searchString
scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
objectAtIndex:[self.searchDisplayController.searchBar
selectedScopeButtonIndex]]];
return YES;
}
#end

Answer 1

u can try this
- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
NSArray *masterArray = self.array;
NSArray *resultsArray = [masterArray filteredArrayUsingPredicate:[NSPredicate predicateWithBlock:^BOOL(Branches *evaluatedObject, NSDictionary *bindings) {
return ([evaluatedObject.BranchAddress rangeOfString: searchText options:NSCaseInsensitiveSearch].location != NSNotFound);
}]];
//edited
[self.searchResults removeAllObjects]; //self.searchResults should be mutable array
[self.searchResults addObjectsFromArray:resultsArray];//put the new values to searchResults
//after this self.searchResults contains objects of filtered Branches u can get the values for example
NSLog(#"%#", [[self.searchResults objectAtIndex:0] BranchAddress]);//self.searchResults contains objects of Branches not the string itself
//reload after this
}