应用程序试图在目标上推送 nil 视图控制器 <UINavigationController

Question

在我的Iphone应用程序我有这个pb: Application tried to push a nil view controller on target <UINavigationController:我有一个包含tableview的视图控制器我希望如果一行被选中另一个视图控制器会被显示。下面是我的代码:

在RecherchePartenaireViewController.m

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (indexPath.row==3){
        NSLog(@"RecherchePartenaireDistanceViewController...");
        recherchePartenaireDistanceViewController = [[RecherchePartenaireDistanceViewController alloc]  init];
      self.recherchePartenaireDistanceViewController=recherchePartenaireDistanceViewController.recherchePartenaireViewController;
        [self.navigationController pushViewController:recherchePartenaireDistanceViewController animated:YES];
        [recherchePartenaireDistanceViewController release];
    }
}

In RecherchePartenaireDistanceViewController.h:

@class RecherchePartenaireViewController;
@interface RecherchePartenaireDistanceViewController : UIViewController {
    RecherchePartenaireViewController *recherchePartenaireViewController;
}
@property (nonatomic, retain) IBOutlet RecherchePartenaireViewController *recherchePartenaireViewController;
@end

和RecherchePartenaireDistanceViewController.m

#import "RecherchePartenaireDistanceViewController.h"
#import "RecherchePartenaireViewController.h"
@implementation RecherchePartenaireDistanceViewController

@synthesize recherchePartenaireViewController;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}
- (void)dealloc
{
    [super dealloc];
    [recherchePartenaireViewController release];
}
- (void)didReceiveMemoryWarning
{
    // Releases the view if it doesn't have a superview.
    [super didReceiveMemoryWarning];
    // Release any cached data, images, etc that aren't in use.
}
#pragma mark - View lifecycle
- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view from its nib.
}
- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
    // e.g. self.myOutlet = nil;
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    // Return YES for supported orientations
    return (interfaceOrientation == UIInterfaceOrientationPortrait);
}
@end

问题在哪里?我真的看不出来。请heeelp…

Answer 1

试着用这个:

- (void)dealloc
{
    [recherchePartenaireViewController release];
    [super dealloc];
}

代替

- (void)dealloc
{
    [super dealloc];
    [recherchePartenaireViewController release];
}

Answer 2

我想我知道你在做什么，但我不明白你想达到什么目的!你有一个包含另一个视图控制器的视图控制器吗?

。RecherchePartenaireDistanceViewController含有RecherchePartenaireViewController

我假设它是一个IBOutlet，您正在使用xib文件填充它。

我唯一能想到的是在xib文件中创建RecherchePartenaireDistanceViewController时出了问题。

如果你这样做，你会在控制台中看到什么:

NSLog(@"controller : %@", recherchePartenaireDistanceViewController);

在添加到导航控制器之前?

p>

句话的目的是什么?

self.recherchePartenaireDistanceViewController=recherchePartenaireDistanceViewController.recherchePartenaireViewController;

Answer 3

如果RecherchePartenaireDistanceViewController带有xib接口，则在初始化时使用以下语句，

recherchePartenaireDistanceViewController = [[RecherchePartenaireDistanceViewController alloc]  initWithNibName:@"RecherchePartenaireDistanceViewController" bundle:nil];

然后把它推送到导航控制器