Question

i have this code vistaPrincipal.h

#import <UIKit/UIKit.h>

@interface vistaPrincipal : UIViewController

@property (retain, nonatomic) 
IBOutlet UIButton *botonHeros;


- (IBAction)botonHeros:(id)sender;

@end

---

vistaPrincipal.m


#import "vistaStrength.h"
#import "vistaPrincipal.h"



- (void)viewDidLoad

    {


     [super viewDidLoad];

    }

- (void)viewDidUnload
{

    [self setBotonHeros:nil];

    [super viewDidUnload];

}

- (IBAction)botonHeros:(id)sender {

    vistaStrength *vistaStr =[[vistaStrength alloc] initWithNibName:@"vistaStrength" bundle:nil];

    vistaStr.modalTransitionStyle=UIModalTransitionStyleCrossDissolve;
    [self presentModalViewController:vistaStr animated:YES];

    [vistaStr release];


    }

---

vistaStrength.h


#import <UIKit/UIKit.h>

@interface vistaStrength : UIViewController


@property (retain, nonatomic) IBOutlet UIScrollView *scrollStrength;

@property (retain, nonatomic) IBOutlet UIButton *logoStrength;

@property (retain, nonatomic) IBOutlet UIButton *logoAgility;

@property (retain, nonatomic) IBOutlet UIButton *logoIntelligence;



- (IBAction)botonRegresar:(id)sender;
@end

---

vistaStrength.m

#import "vistaStrength.h"
#import "vistaPrincipal.h"


- (void)viewDidLoad{

    [super viewDidLoad];

    [scrollStrength setScrollEnabled:YES];
    [scrollStrength setContentSize:CGSizeMake(320,600)];

    }


- (void)viewDidUnload{
    [self setScrollStrength:nil];
    [self setLogoStrength:nil];
    [self setLogoAgility:nil];
    [self setLogoInteligence:nil];

    [super viewDidUnload];

    }

- (void)dealloc{
    [scrollStrength release];
    [logoStrength release];
    [logoAgility release];
    [logoInteligence release];


    [super dealloc];

    }

- (IBAction)botonRegresar:(id)sender{

    vistaPrincipal *primeraVista =[[vistaPrincipal alloc] initWithNibName:@"vistaPrincipal" bundle:nil];

    primeraVista.modalTransitionStyle=UIModalTransitionStyleCrossDissolve;
    [self presentModalViewController:primeraVista animated:YES];


    [primeraVista release];
    }

---

in the transition of these views I’m losing memory
What I can do?

Answer 1

Looks like you’re not going back to vista principal, but allocating a fresh new intance of it?
So the first instance of vistaPrincipal is still there, and rather than dismissing vistaStrentgh, you create a new instance on top of that. You now have 2 vistaprincipal in memory.
If you go to vista strentgh again, you’ll have 2 of each, then 3 – it’ll gros infinitely.

In vista principal, rather than create a new vista principal, try calling [self.parentViewController dismissModalViewController]. If running on ios 5, make that [self.presentingViewController dismissModalViewController].