Send object to UITableView controller
希望有人能帮我，这让我很为难
我的应用程序在选项卡栏中有两个视图控制器…
1 2 3 4 5 6 7 8 9 10 11 12 13 | //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(
1 | [vc2 addToCapturesArray:capture]; |
当然，这不起作用，我只是从编译器得到"VC2未声明"的消息。我如何让我的
谢谢你的帮助。它现在全部编译，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…
1 2 3 4 5 6 7 8 | @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; |
}@属性(非原子，保留)IBoutlet UIWindow*窗口；//创建一个属性以便我们可以从外部访问VC2@属性(非原子，保留)savedView控制器*vc2；
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | #import"Rolling_VideoAppDelegate.h" //Import view controllers #import"RecordingViewController.h" #import"SavedViewController.h" @implementation Rolling_VideoAppDelegate @synthesize window; @synthesize vc2 = _vc2; #pragma mark - #pragma mark Application lifecycle - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { //Create an instance of tabBarView controller tabBarController = [[UITabBarController alloc]init]; //Create two view controllers UIViewController *vc1 = [[RecordingViewController alloc] init]; UIViewController *vc2 = [[SavedViewController alloc] init]; self.vc2 = _vc2; //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]; //Place the tabBar on the window [window addSubview:[tabBarController view]]; [self.window makeKeyAndVisible]; return YES; |
}
文件处理程序如下…
1 2 3 4 5 6 7 8 9 10 | Captures *capture = [[Captures alloc]initWithVideoPath:savePath]; NSLog(@"Instance of capture called: VideoPath: %@ Geo: %@, 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。
丰富的
假设您的VC1/VC2在AppDelegate中，那么您希望扩展类似这样的应用程序委托
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | @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]; } |
在创建VC2时，除了其他代码外，还要执行以下操作：
1 2 3 | // Since this is a retain property it will do the retain you need // when assigning to self.vc2 self.vc2 = vc2; |
现在，在你的文件namanger中，执行以下操作：
1 2 3 | // Get a reference to the app delegate, and then access the vc2 property AppDelegate *appDelegate = (AppDelegate*)[UIApplication sharedApplication].delegate; VC2Class *vc2 = appDelegate.vc2; |
然后你可以正常的打电话来。确保在文件名顶部包含
@结束