iPhone 内存泄漏

Question

有这段代码 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];
    }

---

我在这些视图的转换中 我失去了记忆 我能做什么？

Answer 1

看来您不会返回 Vista 主体，而是分配一个全新的实例？
因此，vistaPrincipal 的第一个实例仍然存在，您无需忽略 vistaStrentgh，而是在此基础上创建一个新实例。您现在内存中有 2 个 vistaprincipal。
如果你再次进入 vista strentgh，你将分别拥有 2 个，然后是 3 个 - 它将无限增长。

在 vista 主体中，不要创建新的 vista 主体，而是尝试调用 [self.parentViewController DismissModalViewController]。如果在 ios 5 上运行，请设置 [self.presentingViewController DismissModalViewController]。