UISearch bar always displays : no result - xcode

Question

In my application, I display data from sqlite database in uitableviewsuccessfully and insert UISearchbar and display controller to display search results in an another table, the problem is that when I type a string to search, it always return : no result even if this string exists in that table!!
I think I have something wrong in method
(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText but I don't know exactly what is the problem and how to deal with it !! Here is my code :
MasterViewControllerViewController.m :
#import "MasterViewControllerViewController.h"
#import"MasterViewControllerAppDelegate.h"
#import"SingleStudent.h"
- (void)viewDidLoad {
MasterViewControllerAppDelegate* appDelegate =(MasterViewControllerAppDelegate*)[[UIApplication sharedApplication]delegate];
maListe = [[NSMutableArray alloc] init];
tampon = [[NSMutableArray alloc] init];
[maListe addObjectsFromArray:appDelegate.aryDatabase];
[tampon addObjectsFromArray:maListe];
[super viewDidLoad];
}
- (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];
}
MasterViewControllerAppDelegate* appDelegate =(MasterViewControllerAppDelegate*)[[UIApplication sharedApplication]delegate];
SingleStudent* sStudent =[appDelegate.aryDatabase objectAtIndex:indexPath.row];
cell.textLabel.text = [sStudent strName];
// Configure the cell.
return cell;
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
tampon2 = [[NSMutableArray alloc] init];
[tampon2 addObjectsFromArray:tampon];
[maListe removeAllObjects];
if([searchText isEqualToString:#""])
{
[maListe removeAllObjects];
[maListe addObjectsFromArray:tampon]; // Restitution des données originales
return;
}
for (NSDictionary *dict in tampon2 ){
NSString *name = [NSString stringWithFormat:#"%#", dict];
NSRange range = [name rangeOfString:searchText options:NSCaseInsensitiveSearch];
if (range.location != NSNotFound)
{
if(range.location== 0) // premiere lettre
[maListe addObject:name];}
}}
MasterViewControllerAppDelegate.m
#import "MasterViewControllerAppDelegate.h"
#import "MasterViewControllerViewController.h"
#import "SingleStudent.h"
-(void)updateNames {
databaseName = #"students7.sqlite";
NSArray* documentsPath= NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString* documentsDir =[documentsPath objectAtIndex:0];
databasePath = [documentsDir stringByAppendingPathComponent:databaseName];}
-(void)checkAndCreateDatabase {
BOOL success;
NSFileManager* fileManager = [NSFileManager defaultManager];
success = [fileManager fileExistsAtPath:databasePath];
if (success) {
return;
}
NSString* databasePathFromApp = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:databaseName];
[fileManager copyItemAtPath:databasePathFromApp toPath:databasePath error:nil];
}
-(void)readWordsFromDatabase{
db = [FMDatabase databaseWithPath:databasePath];
aryDatabase = [[NSMutableArray alloc] init];
[db setLogsErrors:TRUE];
[db setTraceExecution:TRUE];
if (![db open]) {
NSLog(#"failed to open database");
return;
}
else {
NSLog(#"Opened database successfully");
}
FMResultSet* rs = [db executeQuery:#"SELECT * FROM student"];
while ([rs next]) {
int aID = [rs intForColumn:#"id"];
int aPK = [rs intForColumn:#"pk"];
NSString* aName = [rs stringForColumn:#"name"];
SingleStudent* sStudent = [[SingleStudent alloc] initWithData:aPK :aID :aName];
[aryDatabase addObject:sStudent];
[sStudent release];
}
[db close];
}
singleStudent.m
-(id)initWithData:(int)pK :(int)aId :(NSString*)name`
{
self.intPK = pK;
self.intId = aId;
self.strName = name;
return self;}
How can I solve this problem ?

Answer 1

I changed my code to this and it works fine here the changes if someone need it one day:
- (void)viewDidLoad {
maListe = [[NSMutableArray alloc] init];
tampon = [[NSMutableArray alloc] init];
int i;
for (i=0 ; i <= 4; i++) {
MasterViewControllerAppDelegate* appDelegate=(MasterViewControllerAppDelegate*)[[UIApplication sharedApplication]delegate];
SingleStudent* sStudent=[appDelegate.aryDatabase objectAtIndex:i];
[maListe addObject:[sStudent strName]];
}
[tampon addObjectsFromArray:maListe];
[super viewDidLoad];
}
- (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];
}
//MasterViewControllerAppDelegate* appDelegate =(MasterViewControllerAppDelegate*)[[UIApplication sharedApplication]delegate];
//SingleStudent* sStudent =[appDelegate.aryDatabase objectAtIndex:indexPath.row];
//NSString *cellValue = [sStudent strName];
NSString *cellValue = [maListe objectAtIndex:indexPath.row];
cell.textLabel.text = cellValue;
// Configure the cell.
/*NSString *cellValue = [maListe objectAtIndex:indexPath.row];
cell.textLabel.text = cellValue;*/
return cell;}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
tampon2 = [[NSMutableArray alloc] init];
[tampon2 addObjectsFromArray:tampon];
[maListe removeAllObjects];
if([searchText isEqualToString:#""])
{
[maListe removeAllObjects];
[maListe addObjectsFromArray:tampon]; // Restitution des données originales
return;
}
for(NSString *name in tampon2)
{
NSRange r = [name rangeOfString:searchText];
if(r.location != NSNotFound)
{
if(r.location== 0) // premiere lettre
[maListe addObject:name];
}
}
}