Question

I’m starting with the SDK and I am trying to set an app using a tableview to display the info.

I created a window base application and Im using a tab bar with a tableview that has a navigation bar to go back and forward in it, and it works fine “apparently”, but I am having The problem that Whenever you tap the first row of each (1,2,3…) section it calls the first row of the first section on and on, and I have done a lot of research: tutorials, books, forums, but cant seem to find a way to make it work. I found a lot of good information although that helped me a lot, but wouldn’t fix my problem. I have been fitting with it for days and days.

So having tried all the resources that I was able to find I cry to you for help.

Here is the code I attempt to use, I think it would be of some help to some of you ether.

// Im using This in the
MyTableViewController.h {

#import <UIKit/UIKit.h>
#import "firstCustomCell.h"

@interface MyTableViewController : UITableViewController <UITableViewDelegate,UITableViewDataSource> {

IBOutlet UITableView *theTableView;
NSMutableArray *firstArray;
NSMutableArray *secondArray;
NSMutableArray *thirdArray;
NSMutableArray *listOfItems; 
  }

   @property (nonatomic, retain) NSMutableArray *firstArray;
   @property (nonatomic, retain) NSMutableArray *secondArray;
   @property (nonatomic, retain) NSMutableArray *thirdArray;
   @property (nonatomic, retain) NSMutableArray *listOfItems;

   @end

   }

// Then in the implementation Im using This: tableViewController.m

#import "MyTableViewController.h"
#import "One.h"
#import "Two.h"
#import "Three.h"
#import "Four.h"
#import "Five.h"
#import "Six.h"
#import "Seven.h"
#import "Eight.h"
#import "Nine.h"
#import "Ten.h"
#import "Eleven.h"
#import "Twelve.h"

@implementation MyTableViewController

@synthesize firstArray;
@synthesize secondArray;
@synthesize thirdArray;
@synthesize listOfItems;

#pragma mark -
#pragma mark View lifecycle


- (void)viewDidLoad {
[super viewDidLoad];

listOfItems = [[NSMutableArray alloc]init];

firstArray = [[NSMutableArray alloc]init];
[firstArray addObject:@"Week One"];
[firstArray addObject:@"Week Two"];
[firstArray addObject:@"Week Three"];


NSDictionary *firstDic = [NSDictionary dictionaryWithObject:firstArray forKey:@"CompoNente"];

secondArray = [[NSMutableArray alloc]init];
[secondArray addObject:@"Week Four"];
[secondArray addObject:@"Week Five"];
[secondArray addObject:@"Week Six"];
[secondArray addObject:@"Week Seven"];


NSDictionary *secondDic = [NSDictionary dictionaryWithObject:secondArray forKey:@"CompoNente"];

thirdArray = [[NSMutableArray alloc]init];
[thirdArray addObject:@"Week Eight"];
[thirdArray addObject:@"Week Nine"];
[thirdArray addObject:@"Week Ten"];
[thirdArray addObject:@"Week Eleven"];
[thirdArray addObject:@"Week Twelve"];

NSDictionary *thirdDic = [NSDictionary dictionaryWithObject:thirdArray forKey:@"CompoNente"];


[listOfItems addObject:firstDic];
[listOfItems addObject:secondDic];
[listOfItems addObject:thirdDic];


self.title = NSLocalizedString(@"TableView", @"My favorite TableView");




#pragma mark -
#pragma mark Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
// Return the number of sections.
return [listOfItems count];
}



- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section  {
// Return the number of rows in the section.

NSDictionary *dictionary = [listOfItems objectAtIndex:section];
NSArray *array = [dictionary objectForKey:@"CompoNente"];
return [array count];

// Customize the appearance of table view cells.

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *CellIdentifier = @"ScustomCell";

firstCustomCell *cell = (firstCustomCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];

if (cell == nil) {

NSLog(@"Cell created");

NSArray *nibObjects = [[NSBundle mainBundle] loadNibNamed:@"firstCustomCell" owner:nil options:nil];

for(id currentObject in nibObjects) {

if ([currentObject isKindOfClass:[firstCustomCell class]]) {
 cell = (firstCustomCell *)currentObject;
}

}
  }

 switch (indexPath.row) {
  case 0:
   (indexPath.section == 0, indexPath.row == 0);
   [[cell currentNameLabel] setText:@"Week One"];
   [[cell imageView] setImage:[UIImage imageNamed:@"1.png"]];
   break;
  case 1:
   (indexPath.section == 0, indexPath.row == 1);
   [[cell currentNameLabel] setText:@"Week Two"];
   [[cell imageView] setImage:[UIImage imageNamed:@"2.png"]];
   break;
  case 2: 
   (indexPath.section == 0, indexPath.row %12 == 2);
   [[cell currentNameLabel] setText:@"Week Three"];
   [[cell imageView] setImage:[UIImage imageNamed:@"3.png"]];
   break;
  case 3:
   (indexPath.section == 1, indexPath.row %12 == 0);
   [[cell currentNameLabel] setText:@"Week Four"];
   [[cell imageView] setImage:[UIImage imageNamed:@"4.png"]];
   break;
  case 4:
   (indexPath.section == 1, indexPath.row %12 == 1);
   [[cell currentNameLabel] setText:@"Week Five"];
   [[cell imageView] setImage:[UIImage imageNamed:@"5.png"]];
   break;
  case 5:
   (indexPath.section == 1, indexPath.row %12 == 2);
   [[cell currentNameLabel] setText:@"Week Six"];
   [[cell imageView] setImage:[UIImage imageNamed:@"6.png"]];
   break;
  case 6:
   (indexPath.section == 1, indexPath.row %12 == 3);
   [[cell currentNameLabel] setText:@"Week Seven"];
   [[cell imageView] setImage:[UIImage imageNamed:@"7.png"]];
   break;
  case 7:
   (indexPath.section == 2, indexPath.row %12 == 0);
   [[cell currentNameLabel] setText:@"Week Eight"];
   [[cell imageView] setImage:[UIImage imageNamed:@"8.png"]];
   break;
  case 8:
   (indexPath.section == 2, indexPath.row %12 == 1);
   [[cell currentNameLabel] setText:@"Week Nine"];
   [[cell imageView] setImage:[UIImage imageNamed:@"9.png"]];
   break;
  case 9:
   (indexPath.section == 2, indexPath.row %12 == 2);
   [[cell currentNameLabel] setText:@"Week Ten"];
   [[cell imageView] setImage:[UIImage imageNamed:@"10.png"]];
   break;
  case 10:
   (indexPath.section == 2, indexPath.row %12 == 3);
   [[cell currentNameLabel] setText:@"Week Eleven"];
   [[cell imageView] setImage:[UIImage imageNamed:@"11.png"]];
   break;
  case 11:
   (indexPath.section == 2, indexPath.row %12 == 4);
   [[cell currentNameLabel] setText:@"Week Twelve"];
   [[cell imageView] setImage:[UIImage imageNamed:@"12.png"]];
   break;

 }

// Configure the cell…

NSDictionary *dictionary = [listOfItems objectAtIndex:indexPath.section];
NSArray *array = [dictionary objectForKey:@"CompoNente"];
NSString *cellValue = [array objectAtIndex:indexPath.row];

cell.text = cellValue; //also receive a warning that setText is deprecated.


return cell;

}   

//Then the delegate

#pragma mark -
#pragma mark Table view delegate

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {

 [tableView deselectRowAtIndexPath:indexPath animated:YES];

 if ([[firstArray objectAtIndex:indexPath.row] isEqual: @"Week One"]) {

  One *one = [[One alloc]initWithNibName:@"One" bundle:nil];
  [self.navigationController pushViewController:one animated:YES];
  [one release];

 }

 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Two"]) {

  Two *two = [[Two alloc]initWithNibName:@"Two" bundle:nil];
  [self.navigationController pushViewController:two animated:YES];
  [two release]; 
 }

 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Three"]) {

   Three *three = [[Three alloc]initWithNibName:@"Three" bundle:nil];
  [self.navigationController pushViewController:three animated:YES];
  [three release]; 
 }

 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Four"]) {

  Four *four = [[Four alloc]initWithNibName:@"Four" bundle:nil];
  [self.navigationController pushViewController:four animated:YES];
  [four release]; 
 }

 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Five"]) {

  Five *five = [[Five alloc]initWithNibName:@"Five" bundle:nil];
  [self.navigationController pushViewController:five animated:YES];
  [five release]; 
 }

 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Six"]) {

  Six *six = [[Six alloc]initWithNibName:@"Six" bundle:nil];
  [self.navigationController pushViewController:six animated:YES];
  [six release]; 
 }

 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Seven"]) {

  Seven *seven = [[Seven alloc]initWithNibName:@"Seven" bundle:nil];
  [self.navigationController pushViewController:seven animated:YES];
  [seven release]; 
 }

 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Eight"]) {

  Eight *eight = [[Eight alloc]initWithNibName:@"Eight" bundle:nil];
  [self.navigationController pushViewController:eight animated:YES];
  [eight release]; 
 }

 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Nine"]) {

  Nine *nine = [[Nine alloc]initWithNibName:@"Nine" bundle:nil];
  [self.navigationController pushViewController:nine animated:YES];
  [nine release]; 
 }


 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Ten"]) {

  Ten *ten = [[Ten alloc]initWithNibName:@"Ten" bundle:nil];
  [self.navigationController pushViewController:ten animated:YES];
  [ten release]; 
 }

 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Eleven"]) {

  Eleven *eleven = [[Eleven alloc]initWithNibName:@"Eleven" bundle:nil];
  [self.navigationController pushViewController:eleven animated:YES];
  [eleven release]; 
 }
 else if ([[firstArray objectAtIndex:indexPath.row] isEqual:@"Week Twelve"]) {

  Twelve *twelve = [[Twelve alloc]initWithNibName:@"Twelve" bundle:nil];
  [self.navigationController pushViewController:twelve animated:YES];
  [twelve release]; 
 }
}

//adding the headers for sections

-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {

if (section == 0)
 return @"FIRST SECTION";

 else if (section == 1)
  return @"SECOND SECTION";

 else if (section == 2)
  return @"THIRD SECTION";

} // also receive a warning "Control reaches end of non-void function"

//Release or clean memory And finishing TableView

#pragma mark -
#pragma mark Memory management

- (void)didReceiveMemoryWarning {
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];

    // Relinquish ownership any cached data, images, etc that aren't in use.
}

- (void)viewDidUnload {
    // Relinquish ownership of anything that can be recreated in viewDidLoad or on demand.
    // For example: self.myOutlet = nil;
}


- (void)dealloc {
 [listOfItems release];
 [thirdArray release];
 [secondArray release];
 [firstArray release];
    [super dealloc];
}


@end

Answer 1

Yeah I always have this problem – I’m not sure what it is but I think its something to do with the fact that == 0 is also == NO or == false, but I’m not sure.

What usually works for me is treating it like an integer, so:

if([indexPath section] < 1){
  // section 0
}
else if([indexPath section] > 0 && [indexPath section] < 2){
  // section 1
}
else{
  // etc...
}

or you could convert it to an NSString

NSString *section = [NSString stringWithFormat:@"%i",[indexPath section]];

and then do a string comparison:

if([section isEqualToString:@"0"]){
  // first section
}
else if([section isEqualToString:@"1"]){
  // next section
}
else {
  // etc...
}