Iphone 将对象发送到UITableView控制器

希望有人能帮我，这让我很困惑

我的应用程序在选项卡栏中有两个视图控制器

//Create two view controllers
UIViewController *vc1 = [[RecordingViewController alloc] init];
UIViewController *vc2 = [[SavedViewController alloc] init];//this is a tableViewController

//Make an array with the two view controllers
NSArray *viewControllers = [NSArray arrayWithObjects:vc1, vc2, nil];

//Release the two view controllers since they are now retained by the array
[vc1 release];
[vc2 release];

//Attach the ViewControllers to the tabBar
[tabBarController setViewControllers:viewControllers];

然后我有另一个对象（

fileHandler

），它想将名为

capture

的对象发送到

vc2

，以添加到

NSMutableArray

，因此我从该类发送

[vc2 addToCapturesArray:capture];

当然，这不起作用，我只是从编译器中得到“vc2未声明”消息。如何让我的

fileHandler

类知道vc2实例？提前感谢你的帮助

---

谢谢你的帮助。它现在都可以编译了，但是vc2中的方法没有被调用 出于某种原因。代码现在看起来像这样

    @interface Rolling_VideoAppDelegate : NSObject <UIApplicationDelegate> {
UIWindow *window;

//Tab bar
UITabBarController *tabBarController;

//Create an ivar so that the app delegate can hold a reference
SavedViewController *_vc2;

    Captures *capture = [[Captures alloc]initWithVideoPath:savePath];
NSLog(@"Instance of capture called:\n VideoPath: %@ \n Geo: %@, \n UserNotes: %@", [capture videoPath], [capture location], [capture userNotes]);

// Get a reference to the app delegate, and then access the vc2 property
Rolling_VideoAppDelegate *appDelegate = (Rolling_VideoAppDelegate*)[UIApplication sharedApplication].delegate;

[appDelegate.vc2 addToCapturesArray:capture];

}

文件处理程序如下所示

    @interface Rolling_VideoAppDelegate : NSObject <UIApplicationDelegate> {
UIWindow *window;

//Tab bar
UITabBarController *tabBarController;

//Create an ivar so that the app delegate can hold a reference
SavedViewController *_vc2;

    Captures *capture = [[Captures alloc]initWithVideoPath:savePath];
NSLog(@"Instance of capture called:\n VideoPath: %@ \n Geo: %@, \n UserNotes: %@", [capture videoPath], [capture location], [capture userNotes]);

// Get a reference to the app delegate, and then access the vc2 property
Rolling_VideoAppDelegate *appDelegate = (Rolling_VideoAppDelegate*)[UIApplication sharedApplication].delegate;

[appDelegate.vc2 addToCapturesArray:capture];

再次感谢你的帮助

---

Rich

假设您的vc1/vc2在AppDelegate中，那么您想要的是像这样扩展AppDelegate

@interface AppDelegate
{
    // Create an ivar so that the app delegate can hold a reference
    VC2Class *_vc2;
}

// Create a property so that you can access if from the outside
@property(nonatomic, retain) VC2Class *vc2;

@end

@implementation AppDelegate

// Map the property to the ivar
@synthesize vc2 = _vc2;

// When you are freeing the app delegate make sure to nil 
// the property to release it
-(void) dealloc
{
    self.vc2 = nil;
    [super dealloc];
}

创建vc2时，除了代码的其余部分外，还要执行以下操作：

// Since this is a retain property it will do the retain you need 
// when assigning to self.vc2
self.vc2 = vc2;

现在，在文件namanger中，执行以下操作：

// Get a reference to the app delegate, and then access the vc2 property
AppDelegate *appDelegate = (AppDelegate*)[UIApplication sharedApplication].delegate;
VC2Class *vc2 = appDelegate.vc2;

然后你可以像平常一样打电话给它。确保在文件的顶部包含导入“VC2Class.h”

---

@end

是否有任何原因导致fileHandler类不能成为第二个视图控制器中的实例变量？正如您所知，

启动blockquote环境；按四个空格缩进将启动代码环境。打字错误：

VC2Class*vc2=appDelegate.vc2：-）通过一些小游戏解决问题。非常感谢各位。