Passing a NSString from View to another - iphone

Question

I am trying to pass a NSString to another view.
In my first view (is a map view) my code is:
FirstView.m file:
import "FlipsideViewController.h"
-(IBAction) displayDetails:(id) sender{
MyLocation *ann = [_mapView.selectedAnnotations objectAtIndex:([_mapView.selectedAnnotations count]-1)];
FlipsideViewController *flipsideViewController;
flipsideViewController= [[FlipsideViewController alloc]init];
flipsideViewController.details =ann.name;
NSLog(#"ann.name:%#", ann.name);
NSLog(#"details:%#", flipsideViewController.details);
FlipsideViewController *controller = [[FlipsideViewController alloc] initWithNibName:#"details" bundle:nil];
controller.delegate = self;
controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:controller animated:YES];
[controller release];
}
and the NSlog print the correct string. But when I try to pass that string to my SecondViewController string called details:
In my FlipsideViewController.h is defined:
NSString *details;
#property (nonatomic, strong) NSString *details;
While in the FlipsideViewController.m
#synthesize details; //and whenever I put the log, it prints the null value
value: NSLog(#"**************detalli %#",detalli);
Where is my fault?

Answer 1

in the secondViewController add a property, a retained property of type NSString
For adding properties please read the following
http://cocoacast.com/?q=node/103
Please edit this section
FlipsideViewController *flipsideViewController;
flipsideViewController= [[FlipsideViewController alloc]init];
flipsideViewController.details =ann.name;
NSLog(#"ann.name:%#", ann.name);
NSLog(#"details:%#", flipsideViewController.details);
FlipsideViewController *controller = [[FlipsideViewController alloc] initWithNibName:#"details" bundle:nil];
controller.delegate = self;
controller.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:controller animated:YES];
[controller release];
to
FlipsideViewController *flipsideViewController;
flipsideViewController= [[FlipsideViewController alloc]init];
flipsideViewController.details =ann.name;
NSLog(#"ann.name:%#", ann.name);
NSLog(#"details:%#", flipsideViewController.details);
flipsideViewController.delegate = self;
flipsideViewController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;
[self presentModalViewController:flipsideViewController animated:YES];
[flipsideViewController release];

Answer 2

try this step:-
1)Firstly You make the property in anotherViewController.h
#property (nonatomic, strong ) NSString *fetchStr;
2) Synthesis the NSString in anotherViewController.m
#synthesize fetchStr;
3)use in firstViewController
anotherViewController *avc = [[anotherViewController alloc]init];
avc.fetchStr = ann.name;
and print(NSLog) the fetchStr in anotherViewController

Answer 3

made annotation
#property(nonatomic,retain) MyLocation *annotation;
and then pass it to another view controller.
it will work.