Retain UITableView cell state when UISearchBar is used - ios

Question

I am using UISearchBar to search names in UITableView cells. How to retain the cell state when charachters are entered in UISearchBar?
I allocated the checkbox in cellForRowAtIndexPath and suppose I made the selection as shown in the screenshot below.
Now if I start searching with letter 'S', checkBox state is 'unchecked' as can be seen below.
How do I retain the checkBox state even if the cells are "filtered" while searching. I am aware that
cellForRowAtIndexPath is invoked every time when we enter text in UISearchBar.
Below is my cellForRowAtIndexPath method.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//static NSString *cellId = #"CheckBoxedCell";
NSString *cellId = [NSString stringWithFormat:#"S%1dR%1d",indexPath.section,indexPath.row];
CheckBoxedCellClass *cell = (CheckBoxedCellClass *)[self.tableViewContact dequeueReusableCellWithIdentifier:cellId];
if(!cell)
{
NSArray *nib;
if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
{
nib = [[NSBundle mainBundle] loadNibNamed:#"CheckBoxedCellClass" owner:self options:nil];
}
else if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
nib = [[NSBundle mainBundle] loadNibNamed:#"CheckBoxedCellClass_iPad" owner:self options:nil];
}
for (id object in nib)
{
if([object isKindOfClass:[CheckBoxedCellClass class]])
{
cell = (CheckBoxedCellClass *)object;
break;
}
}
cell = [nib objectAtIndex:0];
}
//handling check box
NSInteger rowNumber = 0;
for(NSInteger i = 0; i < indexPath.section ; i++)
{
rowNumber += [self tableView:self.tableViewContact numberOfRowsInSection:i];
}
rowNumber += indexPath.row;
SaveCheckBoxedView *saveContact;
if(isFiltered == YES)
{
saveContact = [filterdArray objectAtIndex:indexPath.row];
cell.nameLabel.text = saveContact.nameString;
cell.companyLabel.text = saveContact.companyString;
}
else
{
saveContact = [mutableArray objectAtIndex:indexPath.row];
cell.nameLabel.text = [[objectsForCharacters objectForKey:[arrayOfCharacters objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];
cell.companyLabel.text = [NSString stringWithFormat:#"%#", [companyArray objectAtIndex:rowNumber]];
}
cell.invIdLabel.text = [NSString stringWithFormat:#"%#", saveContact.invitId];
UIButton *checkBox;
if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
{
checkBox = [[UIButton alloc]initWithFrame:CGRectMake(7, 8, 30, 30)];
}
else
{
checkBox = [[UIButton alloc]initWithFrame:CGRectMake(15, 13, 30, 30)];
}
[checkBox setImage:[UIImage imageNamed:#"checkBox.png"] forState:UIControlStateNormal];
[checkBox addTarget:self action:#selector(checkBoxClicked:event:) forControlEvents:UIControlEventTouchUpInside];
// handle check box view reset when scrolled
if(isFiltered == YES)
{
NSLog(#"filtered");
checkBox.tag = indexPath.row;
BOOL buttonPressed = [[boolDict objectForKey:[NSString stringWithFormat:#"%d", indexPath.row]] boolValue];
NSLog(#"Row number = %d", indexPath.row);
[checkBox setSelected:buttonPressed];
if(buttonPressed)
{
[checkBox setImage:[UIImage imageNamed:#"checkBoxMarked.png"] forState:UIControlStateNormal];
}
else
{
[checkBox setImage:[UIImage imageNamed:#"checkBox.png"] forState:UIControlStateNormal];
}
}
else
{
BOOL buttonPressed = [[boolDict objectForKey:[NSString stringWithFormat:#"%d", rowNumber]] boolValue];
NSLog(#"Row number = %d", rowNumber);
[checkBox setSelected:buttonPressed];
if(buttonPressed)
{
[checkBox setImage:[UIImage imageNamed:#"checkBoxMarked.png"] forState:UIControlStateNormal];
}
else
{
[checkBox setImage:[UIImage imageNamed:#"checkBox.png"] forState:UIControlStateNormal];
}
checkBox.tag = rowNumber;
}
[cell.contentView addSubview:checkBox];
return cell;
}
-(void)checkBoxClicked:(id)sender event:(id)event
{
NSSet *touches = [event allTouches];
UITouch *touch = [touches anyObject];
CGPoint currentTouchPosition = [touch locationInView:self.tableViewContact];
NSIndexPath *indexPath = [self.tableViewContact indexPathForRowAtPoint: currentTouchPosition];
NSLog(#"value of indexPath.section %d ,indexPath.row %d",indexPath.section,indexPath.row);
UIButton *tappedButton = (UIButton*)sender;
NSLog(#"Tag number = %d", [sender tag]);
if([tappedButton.currentImage isEqual:[UIImage imageNamed:#"checkBox.png"]])
{
[sender setImage:[UIImage imageNamed: #"checkBoxMarked.png"] forState:UIControlStateNormal];
NSUserDefaults *buttonDefault = [NSUserDefaults standardUserDefaults];
[buttonDefault setBool:YES forKey:#"CHECKMARKEDKEY"];
[self.boolDict setObject:[NSNumber numberWithBool:YES] forKey:[NSString stringWithFormat:#"%d", [sender tag]]];
if(isFiltered == YES)
{
NSString *addId = [filteredArrayOfIds objectAtIndex:indexPath.row];
NSLog(#"filterd id = %#", addId); //get filtered array here
[arrayOfIds addObject:addId];
}
else
{
NSString *finalIntId = [mutableArrayOfIds objectAtIndex:tappedButton.tag];
NSLog(#"Tagged checked button id = %#", finalIntId);
[arrayOfIds addObject:finalIntId];
}
}
else
{
[sender setImage:[UIImage imageNamed:#"checkBox.png"]forState:UIControlStateNormal];
NSLog(#"UnChecked");
[self.boolDict setObject:[NSNumber numberWithBool:NO] forKey:[NSString stringWithFormat:#"%d", [sender tag]]];
if(isFiltered == YES)
{
[arrayOfIds removeObjectIdenticalTo:[filteredArrayOfIds objectAtIndex:tappedButton.tag]];
}
else
{
[arrayOfIds removeObjectIdenticalTo:[mutableArrayOfIds objectAtIndex:tappedButton.tag]];
}
}
}
And UISearhBar method is as follows
- (void)searchBarCancelButtonClicked:(UISearchBar *)searchBar
{
searchBar.text=#"";
[searchBar setShowsCancelButton:NO animated:YES];
[searchBar resignFirstResponder];
[self.tableViewContact reloadData];
[self.tableViewContact scrollToRowAtIndexPath:[NSIndexPath indexPathForRow:0 inSection:0] atScrollPosition:UITableViewScrollPositionTop animated:YES];
}
- (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText
{
if(searchText.length == 0)
{
isFiltered = NO;
}
else
{
isFiltered = YES;
filterdArray = [[NSMutableArray alloc] init];
filteredArrayOfIds = [[NSMutableArray alloc] init];
for (SaveCheckBoxedView *contact in mutableArray)
{
NSRange nameRange = [contact.nameString rangeOfString:searchText options:NSCaseInsensitiveSearch];
if(nameRange.location != NSNotFound)
{
[filterdArray addObject:contact];
[filteredArrayOfIds addObject:contact.invitId];
}
}
}
[self.tableViewContact reloadData];
}
- (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar
{
[searchBar setShowsCancelButton:NO animated:YES];
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
[self.mySearchBar resignFirstResponder];
[mySearchBar setShowsCancelButton:NO animated:YES];
}
- (void) searchDisplayController:(UISearchDisplayController *)controller didLoadSearchResultsTableView:(UITableView *)tableView
{
[tableViewContact registerClass:[CheckBoxedCellClass class] forCellReuseIdentifier:#"SaveContactCellID"];
}
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
[filterdArray removeAllObjects];
if(searchString.length > 0)
{
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF contains [search] %#", self.mySearchBar.text];
for (NSString *key in arrayOfCharacters)
{
NSArray *matches = [objectsForCharacters[key] filteredArrayUsingPredicate:predicate];
[filterdArray addObjectsFromArray:matches];
}
}
return YES;
}
- (void)searchDisplayControllerWillBeginSearch:(UISearchDisplayController *)controller
{
[self.tableViewContact reloadSectionIndexTitles];
}

Answer 1

Solved my own issue with the following code
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
//static NSString *cellId = #"CheckBoxedCell";
NSString *cellId = [NSString stringWithFormat:#"S%1dR%1d",indexPath.section,indexPath.row];
CheckBoxedCellClass *cell = (CheckBoxedCellClass *)[self.tableViewContact dequeueReusableCellWithIdentifier:cellId];
if(!cell)
{
NSArray *nib;
if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
{
nib = [[NSBundle mainBundle] loadNibNamed:#"CheckBoxedCellClass" owner:self options:nil];
}
else if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
{
nib = [[NSBundle mainBundle] loadNibNamed:#"CheckBoxedCellClass_iPad" owner:self options:nil];
}
for (id object in nib)
{
if([object isKindOfClass:[CheckBoxedCellClass class]])
{
cell = (CheckBoxedCellClass *)object;
break;
}
}
cell = [nib objectAtIndex:0];
}
//set fonts
if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
{
[cell.companyLabel setFont:[UIFont italicSystemFontOfSize:10.0]];
}
else
{
[cell.companyLabel setFont:[UIFont italicSystemFontOfSize:14.0]];
}
//handling check box
NSInteger rowNumber = 0;
for(NSInteger i = 0; i < indexPath.section ; i++)
{
rowNumber += [self tableView:self.tableViewContact numberOfRowsInSection:i];
}
rowNumber += indexPath.row;
SaveCheckBoxedView *saveContact;
if(isFiltered == YES)
{
saveContact = [filterdArray objectAtIndex:indexPath.row];
cell.nameLabel.text = saveContact.nameString;
cell.companyLabel.text = saveContact.companyString;
}
else
{
saveContact = [mutableArray objectAtIndex:indexPath.row];
cell.nameLabel.text = [[objectsForCharacters objectForKey:[arrayOfCharacters objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];
cell.companyLabel.text = [NSString stringWithFormat:#"%#", [companyArray objectAtIndex:rowNumber]];
}
cell.invIdLabel.text = [NSString stringWithFormat:#"%#", saveContact.invitId];
UIButton *checkBox;
if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
{
checkBox = [[UIButton alloc]initWithFrame:CGRectMake(7, 8, 30, 30)];
}
else
{
checkBox = [[UIButton alloc]initWithFrame:CGRectMake(15, 13, 30, 30)];
}
[checkBox setImage:[UIImage imageNamed:#"checkBox.png"] forState:UIControlStateNormal];
[checkBox addTarget:self action:#selector(checkBoxClicked:event:) forControlEvents:UIControlEventTouchUpInside];
// handle check box view reset when scrolled
if(isFiltered == YES)
{
NSLog(#"filtered");
BOOL buttonPress = [[boolDictForSearch objectForKey:[filteredArrayOfIds objectAtIndex:indexPath.row]] boolValue];
NSLog(#"button press = %d", buttonPress);
[checkBox setSelected:buttonPress];
if(buttonPress)
{
[checkBox setImage:[UIImage imageNamed:#"checkBoxMarked.png"] forState:UIControlStateNormal];
}
else
{
[checkBox setImage:[UIImage imageNamed:#"checkBox.png"] forState:UIControlStateNormal];
}
checkBox.tag = indexPath.row;
}
else
{
BOOL buttonPressed = [[boolDict objectForKey:[NSString stringWithFormat:#"%d", rowNumber]] boolValue];
NSLog(#"button pressED = %d", buttonPressed);
NSLog(#"Row number = %d", rowNumber);
[checkBox setSelected:buttonPressed];
if(buttonPressed)
{
[checkBox setImage:[UIImage imageNamed:#"checkBoxMarked.png"] forState:UIControlStateNormal];
}
else
{
[checkBox setImage:[UIImage imageNamed:#"checkBox.png"] forState:UIControlStateNormal];
}
checkBox.tag = rowNumber;
}
[cell.contentView addSubview:checkBox];
return cell;
}
-(void)checkBoxClicked:(id)sender event:(id)event
{
NSSet *touches = [event allTouches];
UITouch *touch = [touches anyObject];
CGPoint currentTouchPosition = [touch locationInView:self.tableViewContact];
NSIndexPath *indexPath = [self.tableViewContact indexPathForRowAtPoint: currentTouchPosition];
NSLog(#"value of indexPath.section %d ,indexPath.row %d",indexPath.section,indexPath.row);
UIButton *tappedButton = (UIButton*)sender;
NSLog(#"Tag number = %d", [sender tag]);
if([tappedButton.currentImage isEqual:[UIImage imageNamed:#"checkBox.png"]])
{
[sender setImage:[UIImage imageNamed: #"checkBoxMarked.png"] forState:UIControlStateNormal];
NSUserDefaults *buttonDefault = [NSUserDefaults standardUserDefaults];
[buttonDefault setBool:YES forKey:#"CHECKMARKEDKEY"];
[self.boolDict setObject:[NSNumber numberWithBool:YES] forKey:[NSString stringWithFormat:#"%d", [sender tag]]];
//[self.boolDictForSearch setObject:[NSNumber numberWithBool:YES] forKey:[NSString stringWithFormat:#"%#", saveContact.nameString]];
if(isFiltered == YES)
{
NSString *addId = [filteredArrayOfIds objectAtIndex:indexPath.row];
[self.boolDictForSearch setObject:[NSNumber numberWithBool:YES] forKey:addId];
NSLog(#"filterd id = %#", addId); //get filtered array here
[arrayOfIds addObject:addId];
}
else
{
NSString *finalIntId = [mutableArrayOfIds objectAtIndex:tappedButton.tag];
[self.boolDictForSearch setObject:[NSNumber numberWithBool:YES] forKey:finalIntId];
NSLog(#"Tagged checked button id = %#", finalIntId);
[arrayOfIds addObject:finalIntId];
}
}
else
{
[sender setImage:[UIImage imageNamed:#"checkBox.png"]forState:UIControlStateNormal];
NSLog(#"UnChecked");
[self.boolDict setObject:[NSNumber numberWithBool:NO] forKey:[NSString stringWithFormat:#"%d", [sender tag]]];
//[self.boolDictForSearch setObject:[NSNumber numberWithBool:NO] forKey:[NSString stringWithFormat:#"%#", saveContact.nameString]];
if(isFiltered == YES)
{
[arrayOfIds removeObjectIdenticalTo:[filteredArrayOfIds objectAtIndex:tappedButton.tag]];
[self.boolDictForSearch setObject:[NSNumber numberWithBool:NO] forKey:[filteredArrayOfIds objectAtIndex:tappedButton.tag]];
}
else
{
[arrayOfIds removeObjectIdenticalTo:[mutableArrayOfIds objectAtIndex:tappedButton.tag]];
[self.boolDictForSearch setObject:[NSNumber numberWithBool:NO] forKey:[mutableArrayOfIds objectAtIndex:tappedButton.tag]];
}
}
}