Why my tableView always work with empty cell? - iphone

Question

I made a simple code for tableView to display some player data; however, I got the empty table all the time.
This is a table with data fetched from the site.
I want to show the table with player number(as section) and player name(as row).
But after I run the program, it comes out the empty cells and seems no fetching attempt.
Can anyone tell me what's wrong with my code? Thanks a lot.
#import "playerName.h"
#interface playerName ()
#end
#implementation playerName
#synthesize players = _players;
#synthesize sectionInRtf = _sectionInRtf;
- (NSMutableDictionary *)getPlayerFormRtf
{
if (!_players) {
NSURL *url = [NSURL URLWithString:#"file_on_site"];
_players = [NSMutableDictionary dictionaryWithContentsOfURL:url];
}
return _players;
}
- (NSArray *)getSections
{
if (!_sectionInRtf) {
_sectionInRtf = [self.players allKeys];
}
return _sectionInRtf;
}
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
self.title = #"Players";
self.navigationItem.rightBarButtonItem = self.editButtonItem;
}
- (void)viewDidUnload
{
[super viewDidUnload];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
#pragma mark - UITableViewDataSource
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
return self.sectionInRtf.count;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
NSArray *namesInSection = [self.players objectForKey:[self.sectionInRtf objectAtIndex:section]];
return namesInSection.count;
}
//Additional Method
- (NSString *)name:(NSIndexPath *)indexPath
{
NSArray *nameInSection2 = [self.players objectForKey:[self.sectionInRtf objectAtIndex:indexPath.section]];
return [nameInSection2 objectAtIndex:indexPath.row];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"players";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
cell.textLabel.text = [self name:indexPath];
return cell;
}
#pragma mark - Table view delegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
}
#end

Answer 1

This looks like you are trying to override the accessor methods but you are not using the correct naming. I make this assumption since you never actually call getPlayerFormRtf.
The code should work (though not well) with two simple modifications.
- (NSMutableDictionary *)players
{
if (!_players) {
NSURL *url = [NSURL URLWithString:#"file_on_site"];
_players = [NSMutableDictionary dictionaryWithContentsOfURL:url];
}
return _players;
}
- (NSArray *)sectionInRtf
{
if (!_sectionInRtf) {
_sectionInRtf = [self.players allKeys];
}
return _sectionInRtf;
}
PLEASE note that this is an extremely bad idea, referring to the synchronous loading of a url, since your placeholder url string seems to imply a network access url. This risks blocking the main thread long enough for the application to be killed.