I am using static UITableView to show profile of a customer.
It has SelectCountryCell to select country which, when clicked, opens new UITableView with country list.
When I select country from Country TableView, It should display in previous TableView's SelectCountryCell.
How do I do this?
You should bind the static cells to outlets in your UITableViewController and put the profile syncing methods to the - viewWillAppear method.
When the user changes the country in the Country list the profile updates. After that when the user moves back to the UITableViewController instance with static content the profile data will be automatically updated.
You can define a delegate in your CityTableView and then define a method in this delegate.
You should realize this method in your CountryTableView.
Then you may get what you want.
I only offer you a thought. You should find the detail by yourself.
MasterViewController.h
#import "DetailViewController.h"
#interface MasterViewController : UITableViewController <DetailProtocol> // Note this.
#property (strong, nonatomic) DetailViewController *detailViewController;
#property (strong, nonatomic, readwrite) NSString *selectedCountry;
#end
MasterViewController.m
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
if (!self.detailViewController) {
self.detailViewController = [[DetailViewController alloc] initWithNibName:#"DetailViewController" bundle:nil];
}
self.detailViewController.delegate = self; // THIS IS IMPORTANT...
[self.navigationController pushViewController:self.detailViewController animated:YES];
}
// Note this -- It's a delegate method implementation
- (void)setCountry:(NSString *)country
{
self.selectedCountry = country;
}
DetailViewController.h
#protocol DetailProtocol <NSObject>
-(void)setCountry:(NSString *)country;
#end
#interface DetailViewController : UIViewController
#property (strong, nonatomic) IBOutlet UITableView *tableView;
#property (unsafe_unretained) id <DetailProtocol> delegate; // Note this
#end
DetailViewController.m
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[self.tableView deselectRowAtIndexPath:indexPath animated:YES];
[self.delegate setCountry:[countries objectAtIndex:indexPath.row]]; // Note this
[self.navigationController popViewControllerAnimated:YES];
}
Related
I have a custom UITableViewCell xib that has two buttons on it. An edit button, designed to pass the info for that cell into a new view controller is the one I am currently having issues with. I create a property for the TableViewController in my custom cell, and hook up the button to this code:
-(IBAction) editItem {
self.itemsList = [[TheItemsList alloc] init];
[self.itemsList editItem];
NSLog(#"EDIT");
}
Inside TheItemsList I have this code:
-(void)editItem {
NSLog(#"EDITAGAIN");
EditItem *detailViewController = [[EditItem alloc] initWithNibName:#"EditItem" bundle:nil];
detailViewController.selectedCountry = self.selectedCountry;
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
detailViewController.therow = indexPath.row;
//Pass the selected object to the new view controller.
// Push the view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
}
The console prints my NSLog for each method, but the view does not push. This code was previously used in the didSelectForIndexPath part of the table view, so I know that the view controller it is pushing is fine, I just can't figure out what is going on here.
UPDATE:
I have it SOMEWHAT working, emphasis on the somewhat.
ItemCell.h
#import <UIKit/UIKit.h>
#import "TheItemsList.h"
#class TheItemsList;
#class ItemCell;
#protocol ItemCellDelegate <NSObject>
#required
-(void)editTheItem:(ItemCell *)theCell;
#end
#interface ItemCell : UITableViewCell
#property (assign) id <ItemCellDelegate> delegate;
#property (nonatomic, retain) IBOutlet UILabel *itemName;
#property (nonatomic, retain) IBOutlet UILabel *itemPrice;
#property (nonatomic, retain) IBOutlet UILabel *itemAisle;
#property (nonatomic, retain) IBOutlet UIImageView *thumbnail;
#property (nonatomic, retain) TheItemsList *itemsList;
#end
.m
#import "ItemCell.h"
#import "EditItem.h"
#implementation ItemCell
#synthesize itemName = _itemName;
#synthesize itemAisle = _itemAisle;
#synthesize itemPrice = _itemPrice;
#synthesize thumbnail = _thumbnail;
#synthesize itemsList, delegate;
- (void)awakeFromNib {
[super awakeFromNib];
// Initialization code
}
-(IBAction) editItem {
[self.delegate editTheItem:self];
}
#end
Now, in the TableView
.h
#import <UIKit/UIKit.h>
#import "ItemCell.h"
#class ItemCell;
#protocol ItemCellDelegate;
#interface TheItemsList : UITableViewController <ItemCellDelegate>
.m
-(void)editTheItem:(ItemCell *)theCell {
NSLog(#"EDITAGAIN");
EditItem *detailViewController = [[EditItem alloc] initWithNibName:#"EditItem" bundle:nil];
detailViewController.selectedCountry = self.selectedCountry;
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
detailViewController.therow = indexPath.row;
//Pass the selected object to the new view controller.
// Push the view controller.
[self.navigationController pushViewController:detailViewController animated:YES];
}
What I'm running into is two problems.
1, the first item in the tableview doesn't do anything when the button is pressed.
2, the other rows will run code, but it only does it for the first row's data.
You should use the delegate pattern inside your UITableViewCell to delegate the button press back to the UIViewController which contains the UITableView using the cell.
In cellForRowAt:IndexPath you then retrieve the cell and set its delegate like cell.delegate = self. In the view controller you implement the delegate and handle the action.
In the cell you setup a delegate variable (var delegate: MyCellDelegate?) and inside the editItem function you make a call to the delegate like self.delegate?.editItem()
Your issue is basically because of this line
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
On clicking the button on the cell, it does not select the row necessarily. The button takes the touch. A way to solve this would be to find the NSIndexPath of the cell in which the button is present and then do your operations with it. A way to do is to use the cell reference that is being supplied from the editAction delegate
-(void)editTheItem:(ItemCell *)theCell
Replace [self.tableView indexPathForSelectedRow] with [self.tableView indexPathForCell:theCell]
main storyboard imageI have one Table View Controller named "Contacttableviewcontroller" and one View Controller as"Detailviewcontroller". I have 2 text fields in my View Controller to give contact name and number. I have a button to save. When I click on that button, it should display it in Table View Controller. Concept I am using is passing information from destination to source using delegates. Here goes my code which is not working properly.
Detailviewcontroller.h
#protocol detailviewcontrollerdelegate<NSObject>
- (void)additem:(NSString *)Name MOBILE:(NSString *)Mobile;
#end
#interface DetaiViewController : UIViewController
#property (weak, nonatomic) IBOutlet UITextField *nametextfield;
#property (weak, nonatomic) IBOutlet UITextField *mobiletextfield;
- (IBAction)Save:(id)sender;
#property(nonatomic,weak)id<detailviewcontrollerdelegate>delegate;
Detailviewcontroller.m
- (IBAction)Save:(id)sender {
[self.delegate additem:self.nametextfield.text MOBILE:self.mobiletextfield.text];
}
Contacttableviewcontroller.h
#interface ContactTableViewController : UITableViewController<detailviewcontrollerdelegate>
#property(strong,nonatomic)NSString *contactname;
#property(strong,nonatomic)NSString *contactno;
-(void)reloadtabledata;
#property(strong,nonatomic)NSArray *contactnamearray;
#property(strong,nonatomic)NSArray *contactnoarray;
#end
Contacttableviewcontroller.m
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return 4;
}
- (void)additem:(NSString *)Name MOBILE:(NSString *)Mobile
{
self.contactname=Name;
self.contactno=Mobile;
self.contactnamearray=#[self.contactname];
self.contactnoarray=#[self.contactno];
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"cellreuse" forIndexPath:indexPath];
cell.textLabel.text=[_contactnamearray objectAtIndex:indexPath.row];
cell.detailTextLabel.text=[_contactnoarray objectAtIndex:indexPath.row];
return cell;
}
-(void)reloadtabledata
{
[self.tableView reloadData];
}
Firstly, you need to check, if you have attached your action method, -Save: to your button or not. You can attach it through the storyboard or programatically. To do it through storyboard, give your button a name like saveButton(not compulsory) and then attach it by ctrl dragging as usual.
Make sure, you attach all the IBOutlets through storyboard properly.
P.S: I have updated the variable's name with proper naming convention. You should also follow the camel case convention while naming your variables.
here is the DetailViewController.h code-
#import <UIKit/UIKit.h>
#protocol DetailViewControllerDelegate;
#interface DetailViewController : UIViewController
#property (weak, nonatomic) IBOutlet UITextField *nameTextField;
#property (weak, nonatomic) IBOutlet UITextField *mobileTextField;
#property(strong, nonatomic) IBOutlet UIButton *savebutton;
- (IBAction)Save:(id)sender;
#property(nonatomic,weak)id<DetailViewControllerDelegate>delegate;
#end
#protocol DetailViewControllerDelegate<NSObject>
- (void)additem:(NSString *)Name MOBILE:(NSString *)Mobile;
#end
And DetailViewController.m-
#import "DetailViewController.h"
#interface DetailViewController ()
#end
#implementation DetailViewController
- (void)viewDidLoad {
[super viewDidLoad];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
- (IBAction)Save:(id)sender {
[self.delegate additem:self.nameTextField.text MOBILE:self.mobileTextField.text];
[self.navigationController popToRootViewControllerAnimated:YES];
}
#end
Now, if you put a break point inside your action method, you will see, it is getting called.
You can see an extra line of code-
[self.navigationController popToRootViewControllerAnimated:YES];
-this is making sure that when you press the save button, it not only sends the data, but also returns to you TableView Controller to show your results.
Now, you need to make sure that your DetailViewController knows who is going to implement its delegate. So, in your ContactTableViewController, wherever, you are initialising your DetailViewController, you have to assign its delegate to self.
So, after a little tweaks, the ContactTableViewController.h class looks like-
#import <UIKit/UIKit.h>
#import "DetailViewController.h"
#interface ContactTableViewController : UITableViewController<DetailViewControllerDelegate>
#property(strong,nonatomic)NSString *contactName;
#property(strong,nonatomic)NSString *contactNo;
-(void)reloadtabledata;
#property(strong,nonatomic)NSMutableArray *contactNameArray; //need to be mutable array, so that the data can keep appending
#property(strong,nonatomic)NSMutableArray *contactMobileNoArray; //same as above
#end
Now, there are some small modifications in the file but, the comments should clarify the purpose.
So, the ContactTableViewController.m file looks like
#import "ContactTableViewController.h"
#interface ContactTableViewController ()
#end
#implementation ContactTableViewController
- (void)viewDidLoad {
[super viewDidLoad];
//Make sure you initialize the array before tryig to add any element
self.contactNameArray =[[NSMutableArray alloc]init];
self.contactMobileNoArray=[[NSMutableArray alloc]init];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
}
#pragma mark-
#pragma mark- TableView Datasource methods
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return [self.contactNameArray count]; //you need to set the row count as the same as the array elements
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"cellreuse" forIndexPath:indexPath];
cell.textLabel.text=[self.contactNameArray objectAtIndex:indexPath.row];
cell.detailTextLabel.text=[self.contactMobileNoArray objectAtIndex:indexPath.row];
return cell;
}
-(void)reloadtabledata
{
[self.tableView reloadData];
}
#pragma mark- Segue method
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{
[segue.destinationViewController setTitle:#"Add Details"];
DetailViewController *vc = [segue destinationViewController];
vc.delegate=self; // By this, you just told your TableViewController that it is responsible for the implementation of the DetailViewController's delegate
}
#pragma mark- DetailViewController's Delegate method
- (void)additem:(NSString *)Name MOBILE:(NSString *)Mobile
{
self.contactName=Name;
self.contactNo=Mobile;
[self.contactNameArray addObject:self.contactName]; //added the new entry
[self.contactMobileNoArray addObject:self.contactNo]; //added the new entry
[self.tableView reloadData]; //reload the table right after you updated the arrays
}
#end
This should help you with all your queries. If there is a change in the ContactTableViewController.m file, I added one or more comments. I tried to run the app and this is working properly.
Hey Just add this line in your view did load method of Contacttableviewcontroller.
DetailViewController *detailVc=[DetailViewController alloc]init];
detailVc.delegate =self;
Try this one
detailviewcontrollerdelegate
#import <Foundation/Foundation.h>
#protocol detailviewcontrollerdelegate<NSObject>
- (void)additem:(NSString *)Name MOBILE:(NSString *)Mobile;
#end
Detailviewcontroller.h
#import <UIKit/UIKit.h>
#import "detailviewcontrollerdelegate.h"
#interface DetaiViewController : UIViewController{
id< detailviewcontrollerdelegate > delegate;
}
#property (nonatomic, assign) id< detailviewcontrollerdelegate > delegate;
#property (weak, nonatomic) IBOutlet UITextField *nametextfield;
#property (weak, nonatomic) IBOutlet UITextField *mobiletextfield;
- (IBAction)Save:(id)sender;
and other as u have done make it same
**Detailviewcontroller.m**
- (IBAction)Save:(id)sender {
[self.delegate additem:self.nametextfield.text MOBILE:self.mobiletextfield.text];
}
I am having a bit of trouble getting a button pressed on a ViewController to load a specific lot of information in an array for displaying on a UITableViewController.
I know you can do it with detecting the segue but I have tried this without - I had success. I read somewhere else how I can use tags on the button to identify it and I tried to use this but it only displays one set of data no matter what button I have pressed. I've tried swapping a lot of things around to try and get it to work but to no avail. I have a ViewController with the buttons on it, a TableViewController to display the arrays and a CellViewController to display the better description of the tableview info.
My code is pretty 'all over the shop' at the moment. I haven't included the Cell View controllers as I don't think they have that much relevance with what I want to do at this stage.The buttonviewcontroller is just a normal UIViewController and both buttons are linked as 'Button1'class in the storyboard. They have been given tags 0 and 1 which I believe is in under the 'view' subheading in the storyboard. Please alert me if this is wrong and I am missing something really obvious but that was the only place I could find 'tag'.
Honestly I don't know exactly what I'm doing in xcode as I'm not very familiar with it but seem to understanding parts of it. However, I'm not sure exactly what I'm doing wrong at the moment.
Code:
ButtonViewController.M (this is where the buttons are)
#import <UIKit/UIKit.h>
#import "tableViewController.h"
#import "TableCell.h"
#interface ButtonViewController : UIViewController
-(IBAction) button_Clicked:(id)sender;
#property (strong, nonatomic) IBOutlet UIButton *Button1;
#end
ButtonViewController.m
#import "ButtonViewController.h"
#import "tableViewController.h"
#import "TableCell.h"
#interface ButtonViewController ()
#end
#implementation ButtonViewController
-(IBAction) button_Clicked:(id)sender
{
//something here that is going wrong
tableViewController *tableVC = [[tableViewController alloc]initWithNibName:#"tableViewController" bundle:nil];
if(_Button1.tag==0)
{
tableVC.buttonSelected = 0;
}
else if(_Button1.tag==1)
{
tableVC.buttonSelected = 1;
}
[self.navigationController pushViewController:tableVC animated:YES];
[tableVC.tableView reloadData];
#end
tableViewController.h
#import <UIKit/UIKit.h>
#interface tableViewController : UITableViewController
#property (nonatomic, assign) int buttonSelected;
#property (nonatomic, strong) NSArray *Title;
//#property (nonatomic, strong) NSMutableArray *Title;
#property (nonatomic, strong) NSArray *Description;
//#property (nonatomic, strong) NSMutableArray *Description;
//Not sure if Mutable or normal array
#end
tableViewController.m
#import "tableViewController.h"
#import "TableCell.h"
#import "DetailViewController.h"
#import "ButtonViewController.h"
#interface tableViewController ()
#end
#implementation tableViewController
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
if(_buttonSelected == 0)
{
_Title = #[#"Hamstring Muscle Tear",#"Lower Back Pain"];
_Description = #[#"Blahahaha", #"blahahaha2",#"blalalala3"];
[self.tableView reloadData];
}
else if (_buttonSelected == 1)
{
_Title = #[#"1",#"2",#"3"];
_Description = #[#"dededdededde", #"deddedede2",#"blalalala3"];
[self.tableView reloadData];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return _Title.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"TableCell";
TableCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
int row = [indexPath row];
cell.TitleLabel.text = _Title[row];
cell.DescriptionLabel.text = _Description[row];
return cell;
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([[segue identifier] isEqualToString:#"ShowDetails"]) {
DetailViewController *detailviewcontroller = [segue destinationViewController];
NSIndexPath *myIndexPath = [self.tableView indexPathForSelectedRow];
int row = [myIndexPath row];
detailviewcontroller.DetailModal = #[_Title[row],_Description[row]];
}
}
#end
There are two ways to doing same.
Implement delegate method and call it on event.
You can fire NSPostNotification event from one controller to another controller.
Change the data, then post an NSNotification that it changed.
The table view data source observes the notification and calls [tableView reloadData]
You can find details how to do this in apple's sample code.
Not sure if the above is even my question as I am basically new to using objective-c and iOS and not sure if that's the right wording but anyway...
Basically I have completed this tutorial https://www.youtube.com/watch?v=ITUI7fukRO8 for using a tableView with an array of data.
The substance of the program consists of a navcontroller, tableviewController and a viewController for the extra detail of the table data.
Currently I have a button (from another viewcontroller) that is linking to my tableView.
How would I go about setting up and IF statement in regards to the button pressed (-as I need to link other buttons from other controllers) so that if a specific button is pressed, the array that is displayed in the tableView is different.
I'm currently thinking of doing a bunch of if, then, else statements and just manually changing the detail of the arrays.
Is this the way to go??
Or should I just set up another table view for each of my buttons.
I have a set of .h and .m for the tableCell, tableCellController, and the ViewController.
That probably didn't make a whole lot of sense but if you somewhat understand help would be appreciated.
Cheers
Edit: As you can see my code is pretty 'all over the shop' at the moment. I haven't included the Cell View controllers as I don't think they have that much relevance with what I want to do at this stage.The buttonviewcontroller is just a normal UIViewController and both buttons are linked as 'Button1'class in the storyboard. They have been given tags 0 and 1 which I believe is in under the 'view' subheading in the storyboard. Please alert me if this is wrong and I am missing something really obvious but that was the only place I could find 'tag'. ARRRG Objective-c is frustrating when you don't the language at all./
Updated Code as 21/03.
ButtonViewController.M (this is where the buttons are)
#import <UIKit/UIKit.h>
#import "tableViewController.h"
#import "TableCell.h"
#interface ButtonViewController : UIViewController
-(IBAction) button_Clicked:(id)sender;
#property (strong, nonatomic) IBOutlet UIButton *Button1;
#end
ButtonViewController.m
#import "ButtonViewController.h"
#import "tableViewController.h"
#import "TableCell.h"
#interface ButtonViewController ()
#end
#implementation ButtonViewController
-(IBAction) button_Clicked:(id)sender
{
//something here that is going wrong
tableViewController *tableVC = [[tableViewController alloc]initWithNibName:#"tableViewController" bundle:nil];
if(_Button1.tag==0)
{
tableVC.buttonSelected = 0;
}
else if(_Button1.tag==1)
{
tableVC.buttonSelected = 1;
}
[self.navigationController pushViewController:tableVC animated:YES];
[tableVC.tableView reloadData];
#end
tableViewController.h
#import <UIKit/UIKit.h>
#interface tableViewController : UITableViewController
#property (nonatomic, assign) int buttonSelected;
#property (nonatomic, strong) NSArray *Title;
//#property (nonatomic, strong) NSMutableArray *Title;
#property (nonatomic, strong) NSArray *Description;
//#property (nonatomic, strong) NSMutableArray *Description;
//Not sure if Mutable or normal array
#end
tableViewController.m
#import "tableViewController.h"
#import "TableCell.h"
#import "DetailViewController.h"
#import "ButtonViewController.h"
#interface tableViewController ()
#end
#implementation tableViewController
- (id)initWithStyle:(UITableViewStyle)style
{
self = [super initWithStyle:style];
if (self) {
// Custom initialization
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
if(_buttonSelected == 0)
{
_Title = #[#"Hamstring Muscle Tear",#"Lower Back Pain"];
_Description = #[#"Blahahaha", #"blahahaha2",#"blalalala3"];
[self.tableView reloadData];
}
else if (_buttonSelected == 1)
{
_Title = #[#"1",#"2",#"3"];
_Description = #[#"dededdededde", #"deddedede2",#"blalalala3"];
[self.tableView reloadData];
}
#pragma mark - Table view data source
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
// Return the number of sections.
return 1;
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
// Return the number of rows in the section.
return _Title.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath: (NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"TableCell";
TableCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier forIndexPath:indexPath];
// Configure the cell...
int row = [indexPath row];
cell.TitleLabel.text = _Title[row];
cell.DescriptionLabel.text = _Description[row];
return cell;
}
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([[segue identifier] isEqualToString:#"ShowDetails"]) {
DetailViewController *detailviewcontroller = [segue destinationViewController];
NSIndexPath *myIndexPath = [self.tableView indexPathForSelectedRow];
int row = [myIndexPath row];
detailviewcontroller.DetailModal = #[_Title[row],_Description[row]];
}
}
#end
Do a CTRL - drag in Storyboard to create a IBAction for the button.
In the IBAction method, get the data you want for your data arrays (Images, Title, Description ref the tutorial you linked). Then call:
[tableview reloadData]
This will repopulate the tableview.
In my second controller when user select a row and after clicked on the back button
I would like to update a UILabel with the text choice.
I have added a UILabel on the first controller and connected to h. file but I don't know how go on
I would like to replicate the GENERAL/AUTO-LOCK function in iPhone/iPad Settings.
You should use delegates for this.
SecondViewController.h:
#protocol SecondViewControllerDelegate;
#interface
...
#property (nonatomic, assign) id <SecondViewControllerDelegate> delegate;
...
#end
#protocol SecondViewControllerDelegate <NSObject>
- (void)secondViewController:(SecondViewController *)vc didTapRowWithText:(NSString *)text;
#end
SecondViewController.m:
#implementation
...
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
[self.delegate secondViewController:self didTapRowWithText:cell.yourLabel.text];
}
...
#end
whoever created and pushed SecondViewController (and maybe/hopefully also 1st one):
// put this after secondViewController initialization
secondViewController.delegate = self;
- (void)secondViewController:(SecondViewController *)vc didTapRowWithText:(NSString *)text
{
firstViewController.yourLabel.text = text;
}