Question

if(!_personViewController)
    {
        _personViewController=[[PersonViewController alloc]initWithNibName:@"PersonViewController" bundle:nil];
    }

    _personViewController.user=_user;
    [self.navigationController pushViewController:_personViewController animated:YES];
    [PersonViewController release];

这是我的代码。我只是想在选择行时跳到 View Consulter 页面上, 但看起来很糟糕。

Answer 1

只需检查您是否在 - (BOOL) 应用程序中写入导航控制器 : (UIApplication *) 应用程序是否在 options: (NSdictionary *) 启动Options 中完成了导航控制器, 并且它是 AppDelegate. m 文件。

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
    {

        self.window = [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]] autorelease];
        self.viewController = [[[ViewController alloc] initWithNibName:@"ViewController_iPhone" bundle:nil] autorelease];
       UINavigationController *navControl = [[UINavigationController alloc] initWithRootViewController:self.viewController];

        [self.window addSubview:[navControl view]];

        [self.window makeKeyAndVisible];
        return YES;
    }

Answer 2

试试这个...

//_personViewController.user=_user;

或

_personViewController.user=[_user retain];

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