Get objectAtIndex from NSMutableDictionary - ios

Question

In my app, I'm working with UISearchBar where user will search from an NSMutableArray by searching with user name. Here is my method for searching user from NSMutableArray
- (void)searchTableList
{
NSString *searchString = searchBar.text;
NSMutableArray *searchArray = [[NSMutableArray alloc] init];
for (NSDictionary *dictionary in contentList)
{
NSArray *array = [dictionary objectForKey:#"username"];
[searchArray addObject:array];
}
for (NSString *sTemp in searchArray)
{
NSRange titleResultsRange = [sTemp rangeOfString:searchString options:NSCaseInsensitiveSearch];
if (titleResultsRange.length > 0)
[filteredContentList addObject:sTemp];
}
}
And Here is how I'm configuring UITableView for showing search results
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"SearchListTableViewCell";
NSMutableDictionary *dict=[contentList objectAtIndex:indexPath.row];
SearchListTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if(cell == nil)
{
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"SearchListTableViewCell" owner:nil options:nil];
cell = (SearchListTableViewCell*)[topLevelObjects objectAtIndex:0];
cell.backgroundColor=[UIColor colorWithRed:239.0/255 green:239.0/255 blue:239.0/255 alpha:1];
[cell setSelectionStyle:UITableViewCellSelectionStyleNone];
}
// Configure the cell...
if (isSearching)
{
cell.friendName.text = [filteredContentList objectAtIndex:indexPath.row];
NSMutableArray *searchImageArray=[[NSMutableArray alloc]init];
for (NSDictionary *dictionary in contentList)
{
NSArray *imageArray=[dictionary objectForKey:#"thumbnail_path_150_150"];
NSLog(#"image arrayt is %#",imageArray);
[searchImageArray addObject:imageArray];
}
for (NSString *imageS in searchImageArray) {
NSRange title=[imageS rangeOfString:cell.friendName.text options:NSCaseInsensitiveSearch];
if (title.length>0) {
[filteredImage addObject:imageS];
}
}
NSString *url=[NSString stringWithFormat:#"%#/get_image?avatar=%#",BaseURL,[filteredImage objectAtIndex:indexPath.row]];
url=[url stringByReplacingOccurrencesOfString:#"\\" withString:#"/"];
UIImage* myImage = [UIImage imageWithData:
[NSData dataWithContentsOfURL:
[NSURL URLWithString:url]]];
[cell.friendProfileImage setImage:myImage];
NSLog(#"filtered Image data %lu",(unsigned long)filteredImage.count);
NSLog(#"filtered content list data %lu",(unsigned long)filteredContentList.count);
}
else
{
cell.friendName.text =[dict objectForKey:#"username"];
NSString *url=[NSString stringWithFormat:#"%#/get_image?avatar=%#",BaseURL,[dict objectForKey:#"thumbnail_path_150_150"]];
url=[url stringByReplacingOccurrencesOfString:#"\\" withString:#"/"];
UIImage* myImage = [UIImage imageWithData:
[NSData dataWithContentsOfURL:
[NSURL URLWithString:url]]];
[cell.friendProfileImage setImage:myImage];
}
return cell;
}
Now I want to fetch the rest data of searched user name from NSMutableDictionary. Here is my dictionary.
(
{
jid = "hey#196.0.0.1";
"thumbnail_path_150_150" = "E\\path\\to\\getImage\\files\\heythumbnail";
username = hey;
},
{
jid = "tweety#196.0.0.1";
"thumbnail_path_150_150" = "E:\\path\\to\\getImage\\files\\tweetythumbnail";
username = tweety;
}
)
Here I want to get the image of searched user. If user searches hey, It must show "thumbnail_path_150_150"
="E\\path\\to\\getImage\\files\\heythumbnail"; this image on tableViewCell. I tried my code for setting image But it replaces image when two users have same name. Like if one user is Ray and another is Blueray , then it changes the image of both. I know i wrote too much. But I'm really confused at this point. Please anyone help solving this issue.

Answer 1

Apply a NSPredicate to filter your array and then use this array to populate the tableView
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"username contains[c] %#",_search_bar.text];
NSArray *filteredArray = [yourMainArray filteredArrayUsingPredicate:predicate];
NSLog(#"here is the filteredCandyArray%#",filteredCandyArray);
//set it to the array you use to fill the table
_dataSourceArray = _filteredCandyArray;
//go!
[_yourTable reloadData];
String comparisons are by default case and diacritic sensitive. You can modify an operator using the key characters c and d within square braces to specify case and diacritic insensitivity respectively, for example firstName BEGINSWITH[cd] $FIRST_NAME.
BEGINSWITH: The left-hand expression begins with the right-hand expression.
CONTAINS: The left-hand expression contains the right-hand expression.
ENDSWITH: The left-hand expression ends with the right-hand expression.
LIKE: The left hand expression equals the right-hand expression: ? and * are allowed as wildcard characters, where ? matches 1 character and * matches 0 or more characters.
MATCHES: The left hand expression equals the right hand expression .
or further details please visit http://nshipster.com/nspredicate/

Answer 2

Simplest way to do this is by using predicates and with a little modifications your code can go somewhat like this
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"username == %#", #"ray"];
NSArray *searchedArray = [rootArray filteredArrayUsingPredicate:predicate];
The above code will only return values where username is ray and not Ray or RAY etc

Answer 3

I recommend you to use Search Bar and Search Display Controller rather than Search Bar.
Also have a look at the following code, it covers everything you want.
#import "ViewController.h"
#interface ViewController ()
#end
#implementation ViewController
#pragma mark
#pragma mark - View Lifecycle
-(void)viewDidLoad
{
[super viewDidLoad];
NSDictionary *dic1 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:#"1", #"India", #"IN", #"+91", nil] forKeys:[NSArray arrayWithObjects:#"CountryId", #"CountryName", #"CountryCode", #"ISDCode", nil]];
NSDictionary *dic2 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:#"2", #"Australia", #"AU", #"+61", nil] forKeys:[NSArray arrayWithObjects:#"CountryId", #"CountryName", #"CountryCode", #"ISDCode", nil]];
NSDictionary *dic3 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:#"3", #"New Zealand", #"NZ", #"+64", nil] forKeys:[NSArray arrayWithObjects:#"CountryId", #"CountryName", #"CountryCode", #"ISDCode", nil]];
NSDictionary *dic4 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:#"4", #"South Africa", #"SA", #"+27", nil] forKeys:[NSArray arrayWithObjects:#"CountryId", #"CountryName", #"CountryCode", #"ISDCode", nil]];
NSDictionary *dic5 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:#"5", #"England", #"EN", #"+44", nil] forKeys:[NSArray arrayWithObjects:#"CountryId", #"CountryName", #"CountryCode", #"ISDCode", nil]];
NSDictionary *dic6 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:#"6", #"Israel", #"IS", #"+972", nil] forKeys:[NSArray arrayWithObjects:#"CountryId", #"CountryName", #"CountryCode", #"ISDCode", nil]];
NSDictionary *dic7 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:#"7", #"Afghanistan", #"AF", #"+93", nil] forKeys:[NSArray arrayWithObjects:#"CountryId", #"CountryName", #"CountryCode", #"ISDCode", nil]];
NSDictionary *dic8 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:#"8", #"Ireland", #"IR", #"+353", nil] forKeys:[NSArray arrayWithObjects:#"CountryId", #"CountryName", #"CountryCode", #"ISDCode", nil]];
NSDictionary *dic9 = [NSDictionary dictionaryWithObjects:[NSArray arrayWithObjects:#"9", #"China", #"CN", #"+86", nil] forKeys:[NSArray arrayWithObjects:#"CountryId", #"CountryName", #"CountryCode", #"ISDCode", nil]];
arrTotalCountries = [NSArray arrayWithObjects:dic1, dic2, dic3, dic4, dic5, dic6, dic7, dic8, dic9, nil];
}
#pragma mark
#pragma mark - UITableView delegate, datasource methods
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if(tableView == self.searchDisplayController.searchResultsTableView){
return [arrFilteredCountries count];
}
else{
return [arrTotalCountries count];
}
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *CellIdentifier = [NSString stringWithFormat:#"CellIdentifier%ld%ld",(long)indexPath.section,(long)indexPath.row];
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier];
}
NSDictionary *dicCountry;
if (tableView == self.searchDisplayController.searchResultsTableView) {
dicCountry = [arrFilteredCountries objectAtIndex:indexPath.row];
} else {
dicCountry = [arrTotalCountries objectAtIndex:indexPath.row];
}
NSString *strShow = [NSString stringWithFormat:#"%# (%#)",[dicCountry objectForKey:#"CountryName"],[dicCountry objectForKey:#"ISDCode"]];
cell.textLabel.text = strShow;
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
NSDictionary *dicCountry;
if (tableView == self.searchDisplayController.searchResultsTableView) {
dicCountry = [arrFilteredCountries objectAtIndex:indexPath.row];
} else {
dicCountry = [arrTotalCountries objectAtIndex:indexPath.row];
}
NSString *countryName = [dicCountry objectForKey:#"CountryName"];
NSString *CountryISDCode = [dicCountry objectForKey:#"ISDCode"];
[self showAlertWithTitle:countryName message:CountryISDCode];
}
#pragma mark
#pragma mark - Other method Implementation
-(void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
{
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"(SELF.CountryName BEGINSWITH[cd] %#) OR (SELF.ISDCode CONTAINS[cd] %#)", searchText, searchText];
arrFilteredCountries = [arrTotalCountries filteredArrayUsingPredicate:predicate];
}
-(void)showAlertWithTitle:(NSString *)title message:(NSString *)message
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title message:message delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil];
[alert show];
}
#pragma mark
#pragma mark - UISearchbar controller delegate
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
[self filterContentForSearchText:searchString
scope:[[self.searchDisplayController.searchBar scopeButtonTitles]
objectAtIndex:[self.searchDisplayController.searchBar
selectedScopeButtonIndex]]];
return YES;
}
#pragma mark
#pragma mark - Memory management
-(void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
}
#end
Also add a comment in case, anyone stuck at some point. I have implemented this and it works nicely. It's a short and best way to add search function to your Table view.