Passing value between view controllers using prepareForSegue: Objective-C - ios

Question

I know this was already asked on here and I have used code from it but I still can't pass value of double grandTotal (from InitialStoreViewController) to double isSomethingEnabled (in ViewController). Here are my view controller files:
InitialStoreViewController.h
#import <UIKit/UIKit.h>
#import "InitialStoreViewController.h"
#import "ViewController.h"
#interface InitialStoreViewController : UITableViewController<UITextFieldDelegate>
{
// TargetViewCon TargetViewController *targetView;
IBOutlet UILabel *peasLabel;
IBOutlet UILabel *eggsLabel;
IBOutlet UILabel *milkLabel;
IBOutlet UILabel *beansLabel;
// requested amounts of each product
int peasAmountInt;
int eggsAmountInt;
int milkAmountInt;
int beansAmountInt;
double peasTotal;
double eggsTotal;
double milkTotal;
double beansTotal;
double grandTotal;
}
- (IBAction)peasStepper:(UIStepper *)sender;
- (IBAction)eggsStepper:(UIStepper *)sender;
- (IBAction)milkStepper:(UIStepper *)sender;
- (IBAction)beansStepper:(UIStepper *)sender;
- (IBAction)calcTotal:(UIBarButtonItem *)sender;
#property double price;
#property double priceToPass;
//this method is
//- (void) stepperAction: (UIStepper*)stepper toLabel: (UILabel*)label;
#end
InitialStoreViewController.m
#import "InitialStoreViewController.h"
#import "ViewController.h"
#import "Product.h"
#implementation InitialStoreViewController
- (void)viewDidLoad
{
//sunday:
[super viewDidLoad];
}
- (IBAction)peasStepper:(UIStepper *)sender
{
peasAmountInt = (int) sender.value;
NSLog(#"Peas Amount: %i", peasAmountInt);
peasLabel.text = [NSString stringWithFormat:#"%i", peasAmountInt];
//Initiating object of class Product
Product *peas = [[Product alloc]init];
peas.amountInt = peasAmountInt;
peasTotal = [peas multiplyAmount: peas.amountInt byPrice:0.95];
NSLog(#"Total amount for peas: %f", peasTotal);
grandTotal = peasTotal + eggsTotal + milkTotal + beansTotal;
NSLog(#"TOTAL Amount: %f", grandTotal);
}
- (IBAction)eggsStepper:(UIStepper *)sender
{
eggsAmountInt = (int) sender.value;
NSLog(#"Eggs Amount: %i", eggsAmountInt);
eggsLabel.text = [NSString stringWithFormat:#"%i", eggsAmountInt];
//Initiating object of class Product
Product *eggs = [[Product alloc]init];
eggs.amountInt = eggsAmountInt;
eggsTotal = [eggs multiplyAmount: eggs.amountInt byPrice:2.10];
NSLog(#"Total amount for eggs: %f", eggsTotal);
grandTotal = peasTotal + eggsTotal + milkTotal + beansTotal;
NSLog(#"TOTAL Amount: %f", grandTotal);
}
- (IBAction)milkStepper:(UIStepper *)sender
{
milkAmountInt = (int) sender.value;
NSLog(#"Milk Amount: %i", milkAmountInt);
milkLabel.text = [NSString stringWithFormat:#"%i", milkAmountInt];
//Initiating object of class Product
Product *milk = [[Product alloc]init];
milk.amountInt = milkAmountInt;
milkTotal = [milk multiplyAmount: milk.amountInt byPrice:1.30];
NSLog(#"Total amount for milk: %f", milkTotal);
grandTotal = peasTotal + eggsTotal + milkTotal + beansTotal;
NSLog(#"TOTAL Amount: %f", grandTotal);
}
- (IBAction)beansStepper:(UIStepper *)sender
{
beansAmountInt = (int) sender.value;
NSLog(#"Beans Amount: %i", beansAmountInt);
beansLabel.text = [NSString stringWithFormat:#"%i", beansAmountInt];
//Initiating object of class Product
Product *beans = [[Product alloc]init];
beans.amountInt = beansAmountInt;
beansTotal = [beans multiplyAmount: beans.amountInt byPrice:1.30];
NSLog(#"Total amount for beans: %f", beansTotal);
grandTotal = peasTotal + eggsTotal + milkTotal + beansTotal;
NSLog(#"TOTAL Amount: %f", grandTotal);
}
- (IBAction)calcTotal:(UIBarButtonItem *)sender
{
grandTotal = peasTotal + eggsTotal + milkTotal + beansTotal;
NSLog(#"TOTAL Amount: %f", grandTotal);
}
//sunday
-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if([segue.identifier isEqualToString:#"showDetailSegue"]){
UINavigationController *navController = (UINavigationController *)segue.destinationViewController;
ViewController *controller = (ViewController *)navController.topViewController;
// controller.isSomethingEnabled = YES;
controller.isSomethingEnabled = &(grandTotal);
}
}
#end
ViewController.h
#import <UIKit/UIKit.h>
#import "InitialStoreViewController.h"
#interface ViewController : UIViewController <UIPickerViewDataSource,
UIPickerViewDelegate>
{
NSArray *news;
NSMutableData *data;
double isSomethingEnabled;
}
#property(nonatomic) double *totalLabelDouble;
#property(nonatomic) double *isSomethingEnabled;
#property (nonatomic, strong) NSArray *currencyArray;
#property (weak, nonatomic) IBOutlet UILabel *totalLabel;
#property (weak, nonatomic) IBOutlet UIPickerView *picker;
#end
ViewController.m
#import "ViewController.h"
#import "Product.h"
#import "InitialStoreViewController.h"
#interface ViewController ()
#end
#implementation ViewController
//double totalLabelDouble = double isSomethingEnabled;
#synthesize currencyArray, totalLabel, picker;
- (void)viewDidLoad
{
[super viewDidLoad];
//checking if value of grandTotal was passed to this view controller:
NSLog(#"HHHHHHHHHHHHHHHHHHHHHHHHHHHH :%f", isSomethingEnabled);
[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
NSURL *url = [NSURL URLWithString:#"http://www.apilayer.net/api/live?access_key=0b8125d8ca8e2801643e360440409165"];
NSURLRequest *request = [NSURLRequest requestWithURL:url];
[[NSURLConnection alloc] initWithRequest:request delegate:self];
// Do any additional setup after loading the view, typically from a nib.
//connection:willCacheResponse
//connection:didReceiveResponse
//connection:didReceiveData
//connectionDidFinishLoading
//connection:didFailWithError
}
- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
data = [[NSMutableData alloc] init];
}
- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)theData
{
[data appendData:theData];
}
- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;
news= [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
//[mainTableView reloadData];
NSLog(#"RAW DATA Marcin %#", data);
//NEW Stuff:
// Now create a NSDictionary from the JSON data
// NSDictionary *jsonDictionary = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
// Create a new array to hold the locations
// NSMutableArray *locations = [[NSMutableArray alloc] init];
// Get an array of dictionaries with the key "locations"
// NSArray *array = [jsonDictionary objectForKey:#"USDGBP"];
// for (id USDGBP in array)
//NSLog(#"VALUEEEEEE %#", array);
// NSLog (#"%#", [[arrayController selectedObjects] valueForKey:#"USDGBP"]);
NSString *json_string = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
NSLog(#"Data AS STRING %#", json_string);
NSDictionary *jsonDict = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
double usdgbpValue = [jsonDict[#"quotes"][#"USDGBP"] doubleValue];
//NSArray *xxx = [jsonDict[#"quotes"][#"USDGBP"] array];
//NSLog(#"VALUEEEEEE %#", xxx);
NSDictionary *jsonDict2 = [NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
//double usdgbpValue2 = [jsonDict[#"quotes"][#"USDGBP"] doubleValue];
NSArray *CurrencyArray = [jsonDict2 objectForKey:#"quotes"];
NSLog(#"VALUE %#", CurrencyArray);
//below causing crash
//currencyArray = [[NSArray alloc]initWithArray:CurrencyArray];
//currencyArray = CurrencyArray;
//double usdgbpValue3 = [NSArray[#"USDGBP"]currencyArray];
NSLog(#"USDGBP :%f", usdgbpValue);
}
- (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error
{
//here to display message that internet connection is needed
}
//Creating product classes
//static Product *peas = nil;
//peas = [[Product alloc]init];
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - UIPickerView Datasource & Delegate Methods
// returns the number of 'columns' to display.
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 1;
}
// returns the # of rows in each component..
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
return [currencyArray count];
}
- (nullable NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
__TVOS_PROHIBITED
{
return currencyArray[row];
}
/// NEW CODE
//NSLog(#"USDGBP :%f", isSomethingEnabled);
//UILabel totalLabel.text = [NSString stringWithFormat: #"%d",
//isSomethingEnabled];
#end
When I run the code I get value for grandTotal but below code shows 0.000 for isSomethingEnabled:
NSLog(#"HHHHHHHHHHHHHHHHHHHHHHHHHHHH :%f", isSomethingEnabled);