Use Search Bar using dynamically generated array - ios

Question

I want to use SearchBar where the elements are generated dynamically with the help of service. Like, if I will pass "i" as parameter, service will fetch all the elements which includes "i" as initial characters. I cannot retrieve the logic as how to implement that in code.
Below is the service am using to get data. But I don't know how to implement Search bar using it.
NSURL * url=[NSURL URLWithString:#"http://dealnxt.com/api/search?searchkey=i"];
NSData * data=[NSData dataWithContentsOfURL:url];
NSError * error;
NSArray *array = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:&error];
NSLog(#"Array is:%#",array);
Below i the code I tried :
.h file
#import <UIKit/UIKit.h>
#interface SearchViewController : UIViewController<UISearchDisplayDelegate,UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate,UISearchResultsUpdating,UISearchControllerDelegate,UITextFieldDelegate>
{
NSMutableArray *contentList;
NSMutableArray *filteredContentList;
BOOL isSearching;
}
#property (strong, nonatomic) IBOutlet UIView *SearchView;
#property (strong, nonatomic) IBOutlet UISearchBar *SearchBar;
#property (strong, nonatomic) IBOutlet UISearchDisplayController *Search;
#property (strong, nonatomic) IBOutlet UITableView *Content;
#end
.m file
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (isSearching) {
return [filteredContentList count];
}
else {
return [contentList count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
if (isSearching) {
cell.textLabel.text = [filteredContentList objectAtIndex:indexPath.row];
}
else {
cell.textLabel.text = [[contentList objectAtIndex:indexPath.row] valueForKey:#"shortdescription"];
}
return cell;
}
- (void)searchTableList {
NSString *searchString = _SearchBar.text;
NSString *UrlString =[NSString stringWithFormat:#"http://dealnxt.com/api/search?searchkey=%#",searchString];
NSMutableURLRequest *Request = [[NSMutableURLRequest alloc] init];
[Request setURL:[NSURL URLWithString:UrlString]];
[Request setHTTPMethod:#"GET"];
NSData *ReturnData = [NSURLConnection sendSynchronousRequest:Request returningResponse:nil error:nil];
NSString *str=[[NSString alloc]initWithData:ReturnData encoding:NSUTF8StringEncoding];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:nil];
contentList=[jsonDict objectForKey:#"ProductDescriptionModel"];
[filteredContentList addObject:[[contentList firstObject] valueForKey:#"shortdescription"]];
}
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {
isSearching = YES;
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
NSLog(#"Text change - %d",isSearching);
//Remove all objects first.
[filteredContentList removeAllObjects];
if([searchText length] != 0) {
isSearching = YES;
[self searchTableList];
}
else {
isSearching = NO;
}
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
NSLog(#"Cancel clicked");
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
NSLog(#"Search Clicked");
[self searchTableList];
}

Answer 1

Here is the solution :
.h file
#import
#interface SearchViewController : UIViewController<UISearchDisplayDelegate,UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate,UISearchResultsUpdating,UISearchControllerDelegate,UITextFieldDelegate>
{
NSMutableArray *contentList;
NSMutableArray *filteredContentList;
BOOL isSearching;
}
#property (strong, nonatomic) IBOutlet UIView *SearchView;
#property (strong, nonatomic) IBOutlet UISearchBar *SearchBar;
#property (strong, nonatomic) IBOutlet UISearchDisplayController *Search;
#property (strong, nonatomic) IBOutlet UITableView *Content;
#end
.m file
#import "SearchViewController.h"
#import "UIColor+HexString.h"
#interface SearchViewController ()
#end
#implementation SearchViewController
- (void)viewDidLoad {
[super viewDidLoad];
_SearchView.backgroundColor=[UIColor colorWithHexString:#"#5130F7"];
_SearchBar.barTintColor=[UIColor colorWithHexString:#"#5130F7"];
_SearchBar.layer.borderWidth = 1;
_SearchBar.layer.borderColor = [UIColor colorWithHexString:#"#5130F7"].CGColor;
_Content.delegate=self;
_Content.dataSource=self;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (isSearching) {
return [filteredContentList count];
}
else {
return [contentList count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
if (isSearching) {
cell.textLabel.text = [filteredContentList objectAtIndex:indexPath.row];
}
else {
cell.textLabel.text = [[contentList objectAtIndex:indexPath.row] valueForKey:#"shortdescription"];
}
return cell;
}
- (void)searchTableList {
NSString *searchString = _SearchBar.text;
NSString *UrlString =[NSString stringWithFormat:#"http://abc.in/key?key=%#",searchString];
NSMutableURLRequest *Request = [[NSMutableURLRequest alloc] init];
[Request setURL:[NSURL URLWithString:UrlString]];
[Request setHTTPMethod:#"GET"];
NSData *ReturnData = [NSURLConnection sendSynchronousRequest:Request returningResponse:nil error:nil];
NSString *str=[[NSString alloc]initWithData:ReturnData encoding:NSUTF8StringEncoding];
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:[str dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:nil];
contentList=[jsonDict objectForKey:#"ProductDescriptionModel"];
filteredContentList =[contentList valueForKey:#"shortdescription"];
NSLog(#"filter:%#",filteredContentList);
[_Content reloadData];
}
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar {
isSearching = YES;
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText {
NSLog(#"Text change - %d",isSearching);
//[filteredContentList removeAllObjects];
if([searchText length] != 0) {
isSearching = YES;
[self searchTableList];
}
else {
isSearching = NO;
}
}
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar {
NSLog(#"Cancel clicked");
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar {
NSLog(#"Search Clicked");
[self searchTableList];
}
#end

Answer 2

Easy way to search anything from dynamic array
your controller.m
{
NSMutableArray *contacts;
NSMutableArray *combinearray;
NSString *searchTextString;
NSMutableArray *searchArray;
BOOL isFilter;
}
- (void)viewDidLoad {
[super viewDidLoad];
txtSearchBar.backgroundColor=Clear;
txtSearchBar.layer.cornerRadius=2;
txtSearchBar.clipsToBounds=YES;
txtSearchBar.delegate =self;
txtSearchBar.layer.borderColor=Black.CGColor;
txtSearchBar.layer.borderWidth=2.0f;
[txtSearchBar addTarget:self action:#selector(textFieldDidChange:) forControlEvents:UIControlEventEditingChanged];
txtSearchBar.layer.sublayerTransform = CATransform3DMakeTranslation(20, 0, 0);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
if(isFilter)
{
return [searchArray count];
}
else
return arrCardsName.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
if(isFilter)
{
yourDictionary = [searchArray objectAtIndex:indexPath.row];
}
else
{
yourDictionary = [yourArray objectAtIndex:indexPath.row];
}
return cell;
}
-(void)textFieldDidChange:(UITextField*)textField
{
searchTextString = textField.text;
[self updateSearchArray:searchTextString];
}
-(void)updateSearchArray:(NSString *)searchText
{
if (searchText.length > 0)
{
isFilter=YES;
searchArray = [NSMutableArray array];
searchText = [NSString stringWithFormat:#"%#",searchText];
for ( NSDictionary* item in yourArray )
{
//NSLog(#"contacts ----->%#",[item objectForKey:#"city"]);
if ([[[item objectForKey:#"city"] lowercaseString] rangeOfString:[searchText lowercaseString]].location != NSNotFound)//object for key #"do whatever you want to search"
{
[searchArray addObject:item];
}
}
}
if (!searchText || searchText.length == 0)
{
isFilter=NO;
searchArray = [yourArray mutableCopy];
}
else
{
if ([searchArray count] == 0)
{
NSLog(#"No data From Search");
}
}
// NSLog(#"search array ====>%#",searchArray);
[tbleView reloadData];
}