cellForRowAtIndexPath doesn't work - ios

Question

On my xcode project I have a view with a tableview. I also have a "special" string that contains the objects to populate the array that populates the tableview.
Example:
NSString *myValues=[[NSString alloc]init];
myValues = #"aaa$bbb$ccc?111$222$333?";
as you can see the characters $ and ? separate the objects.
When I call the view I populate the array by the string but the tableview doesn't work. Here some code:
File.H:
#import <UIKit/UIKit.h>
#interface EquipaggioVC : UIViewController <UITableViewDelegate, UITableViewDataSource>{
UITableView *tableViewEquipaggio;
UITableViewCell *nibLoadedCell;
NSMutableArray *arrayEquipaggio;
NSString *stringaDati;
}
#property (nonatomic, retain) IBOutlet UITableView *tableViewEquipaggio;
#property (nonatomic, retain) IBOutlet UITableViewCell *nibLoadedCell;
#property (nonatomic, retain) NSMutableArray *arrayEquipaggio;
#property (nonatomic, retain) NSString *stringaDati;
#end
File.M:
#import "EquipaggioVC.h"
#import "AppDelegate.h"
#import "ClassEquipaggio.h"
#interface EquipaggioVC ()
#end
#implementation EquipaggioVC
#synthesize tableViewEquipaggio;
#synthesize nibLoadedCell;
#synthesize arrayEquipaggio;
#synthesize stringaDati;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
}
return self;
}
-(NSString *)uuid
{
//to create an ID
CFUUIDRef uuidRef = CFUUIDCreate(NULL);
CFStringRef uuidStringRef = CFUUIDCreateString(NULL, uuidRef);
CFRelease(uuidRef);
return [(NSString *)uuidStringRef autorelease];
}
-(void)loadTestData:(NSString*)stringaDatiArray{
//populate the array by the string.
if(stringaDatiArray!=nil){
NSArray *elenco=[stringaDatiArray componentsSeparatedByString:#"?"];
for (int i=0; i<([elenco count]-1) ; i++) {
NSString *dettagliEquipaggio=[[NSString alloc]init];
dettagliEquipaggio=[elenco objectAtIndex:i];
NSArray *dettagli=[dettagliEquipaggio componentsSeparatedByString:#"$"];
ClassEquipaggio *aEquipaggio=[[ClassEquipaggio alloc]init];
aEquipaggio.idMembro=[dettagli objectAtIndex:0];
aEquipaggio.sessoMembro=[dettagli objectAtIndex:1];
aEquipaggio.dataNascitaMembro=[dettagli objectAtIndex:2];
[arrayEquipaggio addObject:aEquipaggio];
[aEquipaggio release];
}
}
}
- (UITableViewCell *)tableView:(UITableView *)tableEquipaggioView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier = #"Cell";
static NSString *sLoadNibNamed;
UITableViewCell *cell;
ClassEquipaggio *aEquipaggio=[arrayEquipaggio objectAtIndex:indexPath.row];
cell = [tableEquipaggioView dequeueReusableCellWithIdentifier:CellIdentifier];
sLoadNibNamed=#"EquipaggioCell";
if (cell == nil) {
[[NSBundle mainBundle] loadNibNamed:sLoadNibNamed owner:self options:NULL];
cell = [self typeNibLoadCell:aEquipaggio.idMembro];
}
// Configure the cell
UILabel *tipoSessoLabel = (UILabel*) [cell viewWithTag:1];
tipoSessoLabel.text = aEquipaggio.sessoMembro;
UILabel *dataNascitaLabel=(UILabel*)[cell viewWithTag:2];
dataNascitaLabel.text=aEquipaggio.dataNascitaMembro;
return cell;
}
-(NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section{
return [arrayEquipaggio count];
}
-(UITableViewCell *)typeNibLoadCell:(NSString *)named{
return nibLoadedCell;
}
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
// Return NO if you do not want the specified item to be editable.
return NO;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (void)viewDidLoad
{
[super viewDidLoad];
arrayEquipaggio=[[NSMutableArray alloc]init];
stringaDati=[[NSString alloc]init];
tableViewEquipaggio=[[UITableView alloc]init];
}
-(void)viewDidAppear:(BOOL)animated{
AppDelegate *appDelegate=(AppDelegate*)[[UIApplication sharedApplication]delegate];
UIBarButtonItem * btnIndietroa = [[[UIBarButtonItem alloc] initWithTitle:#"Indietro"
style:UIBarButtonItemStyleBordered
target:self
action:#selector(editNavButtonPressed)]autorelease];
[self.navigationItem setLeftBarButtonItem:btnIndietroa];
stringaDati = [[NSUserDefaults standardUserDefaults] objectForKey:#"stringaDati"];
if(stringaDati!=nil){
[arrayEquipaggio removeAllObjects];
[self loadTestData:stringaDati];
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
-(void)dealloc{
[super dealloc];
}
#end
On nib file the tableview has the connection with the delegate and datasource, as the IBoutlet is connected with it.
Thanks for your support.
EDIT: [arrayEquipaggio count] return 0.

Answer 1

By the looks of your question your problem is that the method cellForRowAtIndexPath is not being called and as you said the [arrayEquipaggio count] return 0.
Since you are using that array at the method numberOfRowsInSection with a return value of 0 is normal that your table is not calling the method cellForRowAtIndexPath. Since you are telling to your table that there are no rows.
If you want your table to be populated then check that your array return a value greater than 0.
In a nutshell It has no data to populate your table, that why it doesnt work.
Check that in your viewDidAppear:(BOOL)animated that your are pulling anything to stringaDati.
NSLog(#"info: %#",stringaDati);