ios pushViewController 不工作
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pushViewController not working
提问by Jos
I have an application which has a view called store. In this view there is a button which loads the DetailView. Problem is that this detailview doesn't load/show. This is the code I use:
我有一个应用程序，它有一个名为 store 的视图。在此视图中，有一个加载 DetailView 的按钮。问题是这个 detailview 没有加载/显示。这是我使用的代码：
-(void)knop:(id)sender{
categoryView = [[CategoryView alloc] init];
//show detail view using buttonDetail...
[self.navigationController pushViewController:categoryView animated:YES];
[categoryView release];
NSLog(@"Button is working");
}
The log "Button is working" logs, so the pushViewController line is also triggered.
日志“Button is working”日志，所以 pushViewController 行也被触发。
categoryView is made in my .h file:
categoryView 是在我的 .h 文件中制作的：
CategoryView IBOutlet *categoryView;
}
@property (nonatomic, retain) IBOutlet CategoryView *categoryView;
In the store.xib there is a UIViewController with an outlet linked to the categoryView outlet.
在 store.xib 中，有一个 UIViewController 和一个连接到 categoryView 插座的插座。
Somewhere else in my app this is working, and I can't seem to find out why this one isn't
在我的应用程序的其他地方这是有效的，我似乎无法找出为什么这个不
Any help would be appreciated! THNX
任何帮助，将不胜感激！THNX
采纳答案by Jos
I have found it. Since I was using a tabbar based app, I needed to change the store tab to Navigation Controller. When I changed it, it worked! Thanks for all your support!!!
我已经找到了。由于我使用的是基于标签栏的应用程序，因此我需要将商店标签更改为导航控制器。当我改变它时，它起作用了！感谢您的支持！！！
回答by Patrick
Did you assign the UINavigationController in your AppDelegate?
您是否在 AppDelegate 中分配了 UINavigationController？
@interface
@界面
@property (nonatomic, retain) IBOutlet RootViewController *rootViewController;
@property (nonatomic, retain) IBOutlet UINavigationController *navigationController;
@implementation didFinishLaunchingWithOptions
@implementation didFinishLaunchingWithOptions
rootViewController = [[RootViewController alloc] initWithNibName:@"RootView" bundle:nil];
navigationController = [[UINavigationController alloc] initWithRootViewController:rootViewController];
[window addSubview:navigationController.view];
[self.window makeKeyAndVisible];
pushViewController works fine then through the whole App.
pushViewController 工作正常，然后通过整个应用程序。
回答by bshirley
It sounds like
这听起来像
NSLog(@"nav controller = %@", self.navigationController);
will show that navigationController is nil.
将显示 navigationController 为零。
I suggest creating a new project of navigation type and see how this should be setup.
我建议创建一个导航类型的新项目，看看应该如何设置。
回答by Thomas Nadin
If your view is nib based, you need to use:
如果您的视图基于笔尖，则需要使用：
categoryView = [[CategoryView alloc] initWithNibName:nibName bundle:nibBundle];
Hope this helps.
希望这可以帮助。
