How do I retrieve information from cell in table view? - ios

Question

I want to be able to set a label's text to be what is selected from the table view.
#interface STAdvancedBACViewController ()
#property (nonatomic, copy) NSDictionary *brand;
#property (nonatomic, copy) NSArray *keys;
#property (nonatomic, copy) NSMutableArray *filteredNames;
#property (nonatomic, strong) UISearchDisplayController *searchController;
#property (nonatomic, copy) NSDictionary *beerValues;
#property (nonatomic, copy) NSArray *beerKeys;
#end
#implementation STAdvancedBACViewController {
}
#synthesize brand, keys, filteredNames, searchController, beerValues, beerKeys;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
UITableView *tableView = (id)[self.view viewWithTag:1];
[tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"Cell"];
NSString *path = [[NSBundle mainBundle] pathForResource:#"A" ofType:#"plist"];
brand = [NSDictionary dictionaryWithContentsOfFile:path];
keys = [[brand allKeys]sortedArrayUsingSelector:#selector(compare:)];
filteredNames = [[NSMutableArray alloc]init];
searchController = [[UISearchDisplayController alloc]init];
searchController.searchResultsDataSource = self;
NSString *path2 = [[NSBundle mainBundle] pathForResource:#"BEER2" ofType:#"plist"];
beerValues = [NSDictionary dictionaryWithContentsOfFile:path2];
beerKeys = [[beerValues allKeys] sortedArrayUsingSelector:#selector(compare:)];
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
if (tableView.tag == 1) {
return [keys count];
}
else{
return 1;
}
}
- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
if (tableView.tag == 1) {
NSString *key = keys[indexPath.section];
NSArray *keyValues = brand[key];
cell.textLabel.text = keyValues[indexPath.row];
}
else{
cell.textLabel.text = filteredNames[indexPath.row];
}
return cell;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
if (tableView.tag == 1) {
NSString *key = keys[section];
NSArray *keyValues = brand[key];
return [keyValues count];
}
else {
return [filteredNames count];
}
}
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView {
if (tableView.tag ==1) {
return keys;
}
else {
return nil;
}
}
- (NSString *) tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
if (tableView.tag ==1) {
return keys[section];
}
else {
return nil;
}
}
#pragma mark
- (void)searchDisplayController:(UISearchDisplayController *)controller didLoadSearchResultsTableView:(UITableView *)tableView {
[tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:#"Cell"];
}
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
[filteredNames removeAllObjects];
if (searchString.length > 0) {
NSPredicate *predicate = [NSPredicate predicateWithFormat:#"SELF contains [search] %#", self.searchBar.text];
for (NSString *key in keys) {
NSArray *matches = [brand[key]filteredArrayUsingPredicate:predicate];
[filteredNames addObjectsFromArray:matches];
}
}
return YES;
}
- (void)tableView:(UITableView *)tableView didDeselectRowAtIndexPath:(NSIndexPath *)indexPath {
_testLabel.text = keys[indexPath.row];
}
#end
For some reason this does not return the value in the cell but returns a letter from the Plist file. The plist file was organized such that there were 26 objects that were arrays for each letter of the alphabet and then those were arrays containing the beer names. Basically I want to retrieve the beer name selected by the user.

Answer 1

Though your question is a bit unclear, but I guess you want a label to be the name of the brand that the user selected. In your cellForRowAtIndexPath you are doing this:
if (tableView.tag == 1) {
NSString *key = keys[indexPath.section];
NSArray *keyValues = brand[key];
cell.textLabel.text = keyValues[indexPath.row];
}
else{
cell.textLabel.text = filteredNames[indexPath.row];
}
But in your didDeselectRowAtIndexPath you are just doing this:
_testLabel.text = keys[indexPath.row];
Shouldn't you be doing this in didDeselectRowAtIndexPath:
//Plan your logic accordingly. Its just a rough
if (tableView.tag == 1) {
NSString *key = keys[indexPath.section];
NSArray *keyValues = brand[key];
_testLabel.text = keyValues[indexPath.row];
}
else{
_testLabel.text = filteredNames[indexPath.row];
}
Hope this helps.. :)