Textfields as search bar getting crash - ios

Question

I am using this code for textfiled as search bar.Here is my code. but i am getting crash for range on textfield.if i start entering then its crashing.Even not able to handle case sensitive text also
#import "ViewController.h"
#import "AFNetworking.h"
#import <QuartzCore/QuartzCore.h>
#interface ViewController ()
{
NSMutableArray *countryArray;
NSMutableArray *searchArray;
NSString *searchTextString;
BOOL isFilter;
}
#end
#implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
_countryView.hidden = true;
self->countryArray = [[NSMutableArray alloc] init];
[self makeRestuarantsRequests];
_tableView.layer.borderColor = [UIColor lightGrayColor].CGColor;
_tableView.layer.borderWidth = 1;
_tableView.layer.cornerRadius=5;
[self.searchTextField addTarget:self action:#selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged];
}
-(void)viewDidDisappear:(BOOL)animated {
[super viewDidDisappear:animated];
[[NSNotificationCenter defaultCenter]removeObserver:self
name:UITextFieldTextDidChangeNotification object:nil];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - AFNetworking
-(void)makeRestuarantsRequests{
NSURL *url = [NSURL URLWithString:#"example url"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
AFJSONRequestOperation *operation = [AFJSONRequestOperation JSONRequestOperationWithRequest:request
success:^(NSURLRequest *request, NSHTTPURLResponse *response, id responseObject) {
self->countryArray = [responseObject objectForKey:#"data"];
[self.tableView reloadData];
}
failure:^(NSURLRequest *request, NSHTTPURLResponse *response, NSError *error, id responseObject) {
NSLog(#"Request Failed with Error: %#, %#", error, error.userInfo);
}];
[operation start];
}
#pragma mark - Tableview Delegate and Datasource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if(isFilter)
{
return [searchArray count];
}
else
return [countryArray count];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
NSDictionary *tempDictionary= [self->countryArray objectAtIndex:indexPath.row];
if(isFilter)
{
cell.textLabel.text=[searchArray objectAtIndex:indexPath.row];
}
else
{
cell.textLabel.text = [tempDictionary objectForKey:#"name"];
}
// cell.textLabel.text = [tempDictionary objectForKey:#"name"];
return cell;
}
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
[_SelectCountryButton setTitle:cell.textLabel.text forState:UIControlStateNormal];
_countryView.hidden = true;
}
-(void)textFieldDidChange:(UITextField *)textField
{
searchTextString=textField.text;
[self updateSearchArray:searchTextString];
}
-(void)updateSearchArray:(NSString *)searchText
{
if(searchText.length==0)
{
isFilter=NO;
}
else{
isFilter=YES;
searchArray=[[NSMutableArray alloc]init];
for(NSString *string in countryArray){
NSRange stringRange=[string rangeOfString:searchText options:NSCaseInsensitiveSearch];
if(stringRange.location !=NSNotFound){
[searchArray addObject:string];
}
}
[self.tableView reloadData];}
}
-(BOOL)textFieldShouldReturn:(UITextField *)textField
{
[textField resignFirstResponder];
return YES;
}
#pragma mark UITextFieldDelegates
- (IBAction)SelectCountry:(id)sender {
_countryView.hidden = false;
}
#end
Getting crash error :
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSDictionaryI rangeOfString:options:]: unrecognized selector sent to instance 0x10128b4f0
error code :
-(void)updateSearchArray:(NSString *)searchText
{
if(searchText.length==0)
{
isFilter=NO;
}
else{
isFilter=YES;
searchArray=[[NSMutableArray alloc]init];
for(NSString *string in countryArray){
NSRange stringRange=[string rangeOfString:searchText options:NSCaseInsensitiveSearch];
if(stringRange.location !=NSNotFound){
[searchArray addObject:string];
}
}
[self.tableView reloadData];}
}
Please help me out.How can i solve this issues.
Thanks in advance !
UPDATE :
{"response":true,"message":"country.","data":[{"id":1,"name":"Afghanistan"},{"id":2,"name":"Albania"},{"id":3,"name":"Algeria"},{"id":4,"name":"American Samoa"},{"id":5,"name":"Andorra"},{"id":6,"name":"Angola"}]}

Answer 1

well i have good approach with predicate
well according to you jsonResponse
// so forEach loop should like this
for(NSDictionary *Dic in CountryArray){
NSString*str=[NSString stringWithFormat:#"%#",[dic objectForKey:#"name"]];
}
// well i am not using for each loop instead of that i have nsmutablearray name as _searchArraySingle is same like your countryArray with predicate
// if you are using textfield in place of default Searchbar so use this then use NSPredicate
- (void)viewDidLoad {
[super viewDidLoad];
[[NSNotificationCenter defaultCenter]
addObserver:self
selector:#selector(textFieldTextDidChangeOneCI:)
name:UITextFieldTextDidChangeNotification
object:searchTxt];
SearchBar.delegate = (id)self;
}
-(void)textFieldTextDidChangeOneCI:(NSNotification *)notification {
UITextField *textfield=[notification object];
[self predicatChangeText:textfield.text];
// NSLog(#"%#",textfield.text);
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField {
[textField resignFirstResponder];
return NO;
}
-(void)predicatChangeText:(NSString*)text{
// myJSON.array
NSPredicate *predicateString = [NSPredicate predicateWithFormat:#"%K contains[cd] %#", #"name", text];
_filteredArray = [NSMutableArray arrayWithArray:[_searchArraySingle filteredArrayUsingPredicate:predicateString]];
NSLog(#"_filteredArray=%lu",(unsigned long)[_filteredArray count]);
[self.tableView reloadData];
}
- (IBAction)cancleSearch:(id)sender {
searchTxt.text=#"";
if (_filteredArray) {
_filteredArray=nil;
}
[self.searchTxt resignFirstResponder];
_filteredArray = myJSON.array;
[self.tableView reloadData];
}
Might this will help you out !!!! GoodLuck