Filter NSMutableDictionary data in UITableView - ios

Question

I need to filter data in UITableview by text entered in UISearchbar. I followed this example but there data in NSMutableArray and I can't alter it under my requirements. My data is NSMutableDictionary. I'm stuck on this for long time.
My data:
NSArray *documentPaths = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);
NSString *path = [[documentPaths lastObject] stringByAppendingPathComponent:#"data.plist"];
NSDictionary *dict = [NSDictionary dictionaryWithContentsOfFile:path];
NSMutableDictionary *resultDic = [[NSMutableDictionary alloc] init];
NSMutableArray *resultArray = [[NSMutableArray alloc] init];
NSDictionary *myDict = [NSDictionary dictionaryWithContentsOfFile:path];
sectionKeys = [NSMutableArray new];
sectionsTitle = [NSMutableArray new];
NSArray *tableArray = [myDict objectForKey:#"Black"];
[resultArray addObject:#"Black"];
[resultDic setValue:tableArray forKey:#"Black"];
[sectionsTitle addObject:[NSString stringWithFormat:#"%#", [tableData valueForKey:#"Black"]]];
[sectionCord addObject:[NSString stringWithFormat:#"%#", [tableData valueForKey:#"Coordinates"]]];
[sectionKeys addObject:#"Section1"];
self.tableData = resultDic;
self.sectionsTitle = resultArray;
[myTable reloadData];
My table:
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return sectionKeys.count;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
return [sectionKeys objectAtIndex:section];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
int rowCount;
if(self.isFiltered)
rowCount = [[filteredTableData objectForKey:[sectionsTitle objectAtIndex:section]] count];
else
rowCount = [[tableData objectForKey:[sectionsTitle objectAtIndex:section]] count];
return rowCount;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier];
if(isFiltered){
NSDictionary *dict = [[filteredTableData objectForKey:[sectionsTitle objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];
cell.textLabel.text = [NSString stringWithFormat:#"%#", [dict objectForKey:#"Name"]];
cell.detailTextLabel.text = [NSString stringWithFormat:#"%#", [dict objectForKey:#"Address"]];
}
else{
NSDictionary *dict = [[tableData objectForKey:[sectionsTitle objectAtIndex:indexPath.section]] objectAtIndex:indexPath.row];
cell.textLabel.text = [NSString stringWithFormat:#"%#", [dict objectForKey:#"Name"]];
cell.detailTextLabel.text = [NSString stringWithFormat:#"%#", [dict objectForKey:#"Address"]];
}
return cell;
}
My search:
#pragma mark - SearchBar Delegate -
-(void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)text{
if(text.length == 0)
{
isFiltered = FALSE;
NSLog(#"false");
}
else
{
isFiltered = true;
NSLog(#"true");
filteredTableData = [[NSMutableDictionary alloc] init];
for (MyAnnotation* ann in tableData)
{
NSRange nameRange = [ann.title rangeOfString:text options:NSCaseInsensitiveSearch];
NSRange descriptionRange = [ann.description rangeOfString:text options:NSCaseInsensitiveSearch];
if(nameRange.location != NSNotFound || descriptionRange.location != NSNotFound)
{
[filteredTableData addObject:ann];
//error
}
}
}
[myTable reloadData];
}

Answer 1

First of all, you need to create a state/flag for the controller/data source, in order for it to know weather you are in search/filter mode.
Then, if you are in search mode, point the data source methods to the filteredArray.
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
int numberOfSections = 0;
if (_searchMode)
{
numberOfSections = self.filteredDataDict.allKeys.count;
}
else
{
numberOfSections = self.tableData.allKeys.count;
}
return numberOfSections;
}
Hope it's understood.