Why does data give me null? - ios

Question

I'm trying to pass a NSDictionaryfrom a TableViewControllerto a ViewController. In my TableViewController.m. I have this code to navigate to the ViewController:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSDictionary *objectDict = [dataArray objectAtIndex:indexPath.row];
NSLog(#"Info: %#", objectDict);
// Pass object to new page
//UIViewController * vc = [[UIViewController alloc] init];
//[self presentViewController:vc animated:YES completion:nil];
SeeInfoVC *controller = [[SeeInfoVC alloc] init];
controller.data = objectDict;
NSString * storyboardName = #"Main";
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:storyboardName bundle: nil];
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"SeeInfoVC"];
[self presentViewController:vc animated:YES completion:nil];
In my ViewController.h I have:
#interface SeeCardVC : UIViewController
{
NSDictionary *data;
}
#property (nonatomic, retain)NSDictionary *data;
#end
And then I'm trying to log data in ViewController.m:
#implementation SeeCardVC
#synthesize data;
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
NSLog(#"Info: %#", data);
}
But it only gives me null :(
What am I doing wrong?

Answer 1

Let's see what your code is doing here:
// Create new controller, assign objectDict to data property
SeeInfoVC *controller = [[SeeInfoVC alloc] init];
controller.data = objectDict;
//Get Storyboard name
NSString * storyboardName = #"Main";
//Get Storyboard (BTW, you can do this with self.storyboard)
UIStoryboard *storyboard = [UIStoryboard storyboardWithName:storyboardName bundle: nil];
//Instantiate NEW controller
UIViewController * vc = [storyboard instantiateViewControllerWithIdentifier:#"SeeInfoVC"];
//Present NEW controller
[self presentViewController:vc animated:YES completion:nil];
You created a controller and assigned data to it, and then didn't use it anymore, instead you created a new one from the storyboard, you didn't add the data and presented it.
Basically, you created two, set data to one and presented the other one.
See the problem?