UISearchBar misses elements in the non-visible part of the tableView - ios

Question

I have a TableView with many rows, most are not visible at the time of loading viewController. The rows of UITableView are extracted from a SQLite database. How can I make do that the SearchBar search between all rows and not just the visible ones?
In header file:
#interface ExhibitorsViewController : UIViewController <UITableViewDataSource, UITableViewDelegate, UISearchBarDelegate>{
BOOL isSearchOn;
BOOL canSelectRow;
NSMutableArray * listOfExpositors;
NSMutableArray * searchResult;
}
//....
#end
In implementation file
-(NSInteger)tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section
{
if(isSearchOn){
return [searchResult count];
//In this array there are the elements after use of searchBar
}else{
int number=[self.mutableArray count];
//In this array there are all elements of database, extracts in viewDidLoad()
return number;
}
}
- (UITableViewCell *)tableView:(UITableView *)aTableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier] ;
}
if(isSearchOn){
NSString * cellValue = [searchResult objectAtIndex:indexPath.row];
cell.textLabel.text = cellValue;
}else{
//loading data from the database
Database *currow =[self.mutableArray objectAtIndex:indexPath.row];
cell.textLabel.text = currow.name;
[listOfExpositors addObject:cell.textLabel.text];
//here only loads the list of names visible and not the entire table
//How do I put all the elements in this array?
NSLog(#" %#", listOfExpositors);
isSearchOn = NO;
canSelectRow = YES;
}
}
-(void) doneSearching{
isSearchOn = NO;
canSelectRow = YES;
self.tableView.scrollEnabled = YES;
[self.searchBar resignFirstResponder];
[self.tableView reloadData];
}
-(void) searchBarTextDidBeginEditing:(UISearchBar *)searchBar{
isSearchOn = YES;
if(self.searchBar.text.length>0){
canSelectRow=YES;
self.tableView.scrollEnabled = YES;
}else{
canSelectRow= NO;
self.tableView.scrollEnabled = NO;
}
}
-(void) searchExpositorsTableView{
[searchResult removeAllObjects];
for (NSString *str in listOfExpositors){
NSRange titleResultsRange = [str rangeOfString:self.searchBar.text options:
NSCaseInsensitiveSearch];;
if (titleResultsRange.length >0) {
[searchResult addObject:str];
}
}
NSLog(#"%#", searchResult);
}
-(void) searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText{
if([searchText length]>0){
canSelectRow = YES;
self.tableView.scrollEnabled = YES;
[self searchExpositorsTableView];
}else{
canSelectRow = NO;
self.tableView.scrollEnabled = NO;
}
[self.tableView reloadData];
}
-(void) searchBarSearchButtonClicked:(UISearchBar *)searchBar{
[self searchExpositorsTableView];
[self.searchBar resignFirstResponder];
}
-(NSIndexPath *)tableView:(UITableView *)tableView willSelectRowAtIndexPath:(NSIndexPath *)indexPath{
if(canSelectRow){
return indexPath;
}else{
return nil;
}
NSLog(#"%d", indexPath.row);
}

Answer 1

It was wrong to use the array created in cellForRowAtIndexPath because it was limited only to the visible elements. I then used the NSMutableArray created in viewDidLoad () that does contain all the elements of the database. I changed the following methods:
- (UITableViewCell *)tableView:(UITableView *)aTableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
//....
if(isSearchOn){
NSString * cellValue = [searchResult objectAtIndex:indexPath.row];
cell.textLabel.text = cellValue;
}else{
Database *currow =[self.mutableArray objectAtIndex:indexPath.row];
cell.textLabel.text = currow.name;
//Should be removed this array and used to another, self.mutableArray
//[listOfExpositors addObject:cell.textLabel.text];
// NSLog(#" %#", listOfExpositors);
isSearchOn = NO;
canSelectRow = YES;
}
}
Method for research
-(void) searchExpositorsTableView{
[searchResult removeAllObjects];
for (Database *currow in self.mutableArray){
/*In self.mutableArray there are all elements because is created in
viewDidLoad*/
NSLog(#"list of expositors %#", self.mutableArray);
NSRange titleResultsRange = [currow.name rangeOfString:self.searchBar.text options: NSCaseInsensitiveSearch];
if (titleResultsRange.length >0) {
[searchResult addObject:currow.name];
}
}
NSLog(#"%#", searchResult);
}