Add object to an NSArray from UITableViewCell - ios

Question

I have created a customed UITableViewCell that contains a PFObject property and a button. I want the button to add this object on a NSMutableArray and pass this Array to another UIViewController. The problem is that I can't implement the prepareForSegue method into custom UITableViewCell so when I display the array in restoCardConfirmationVC I always get an empty array.
This is my code :
#import "boxTableViewCell.h"
#import "RestoCardConfirmationViewController.h"
#import "RestauCardViewController.h"
#implementation boxTableViewCell {
NSMutableArray *_pickerPlace;
RestauCardViewController *_restoCardVC;
RestoCardConfirmationViewController *_restoCardConfirmationVC;
}
- (void)awakeFromNib {
// Initialization code
}
- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
[super setSelected:selected animated:animated];
// Configure the view for the selected state
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return _pickerPlace.count;
}
- (NSString*)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
{
return [_pickerPlace objectAtIndex:row];
}
- (IBAction)select:(id)sender {
NSLog(#"the select box is : %#",_box);
[_restoCardConfirmationVC.boxesCommande addObject:_box];
self.select.enabled = NO;
}
#end
RestaCardConfirmation.h
#import <UIKit/UIKit.h>
#import <Parse/Parse.h>
#interface RestoCardConfirmationViewController : UIViewController
#property(nonatomic) PFObject *commande;
#property(nonatomic) NSMutableArray *boxesCommande;
- (IBAction)confirmer:(id)sender;
#end

Answer 1

You should initialise the array before using it. Like this
- (void)awakeFromNib {
// Initialization code
_restoCardConfirmationVC = [[RestoCardConfirmationViewController alloc] init];
_restoCardConfirmationVC.boxesCommande = [NSMutableArray array];
}
Although this is a bad approach. You should initialise the array in the RestoCardConfirmationViewController initialisation.

Answer 2

You have not initialised the Array in which you are adding object. Allocate it either in awakeFromNib or in ViewDidLoad and then add an object in it.
Moreover, I don't find a good reason to alloc view controller in awakeFromNib of TableViewCell. You should allocate the VC only when Button is Tapped.
Hence the code should be like:
- (IBAction)select:(id)sender {
_restoCardConfirmationVC = [[RestoCardConfirmationViewController alloc] init];
[_restoCardConfirmationVC view]; //This will call the ViewDidLoad in Advance
[_restoCardConfirmationVC.boxesCommande addObject:_box];
self.select.enabled = NO;
}
And in ViewDidLoad of RestoCardConfirmationViewController:
- (void)viewDidLoad {
[super viewDidLoad];
_boxesCommande = [NSMutableArray array];
//Other initialisation code
}