当我调用其他视图控制器时，我收到以下警告。
WindowMultivewAppDelegate 可能不会响应 -switchView 来查看
这是我在 Firstviewcontroller.m 中的代码
- (IBAction)swapViews:(id)sender{
WindowMultiViewAppDelegate *delegate = (WindowMultiViewAppDelegate *)[[UIApplication sharedApplication] delegate];
SecondViewController *secondView = [[SecondViewController alloc] initWithNibName:@"SecondViewController" bundle:nil];
[delegate switchView:self toView:secondView.view];
}
这是我在 Firstviewcontroller.h 中的代码
#import <UIKit/UIKit.h>
@interface FirstViewController : UIViewController {
}
- (IBAction)swapViews:(id)sender;
@end
在 appdelegate.m
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions: (NSDictionary *)launchOptions {
initWithNibName:@"FirstViewController" bundle:nil];
[self.window addSubview:navigationController.view];
locationManager = [[CLLocationManager alloc] init];
locationManager.distanceFilter = kCLDistanceFilterNone; // whenever we move
locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters; // 100 m
if ([CLLocationManager locationServicesEnabled]) {
[locationManager startUpdatingLocation];
}
[self.window makeKeyAndVisible];
return YES;
}
在 appdelegate.h
@interface WindowMultiViewAppDelegate : NSObject <UIApplicationDelegate, CLLocationManagerDelegate , MKMapViewDelegate> {
UIWindow *window;
UINavigationController *navigationController;
CLLocationManager *locationManager;
}
@property (nonatomic, retain) IBOutlet UIWindow *window;
@property (nonatomic, retain) IBOutlet CLLocationManager *locationManager;
@property (nonatomic, retain) IBOutlet UINavigationController *navigationController;
@end
我在 mainWindow.xib 中放置了一个 UInavgationcontroller，它通向我命名为 FirstViewController 的 rootviewcontroller
当按下下一个按钮时，应用程序在 secondviewcontroller 中停止，该按钮内部具有该操作
- (IBAction)swapNext:(id)sender
{
WindowMultiViewAppDelegate *delegate = (WindowMultiViewAppDelegate *)[[UIApplication sharedApplication] delegate];
MediaViewController *mediaView = [[MediaViewController alloc] initWithNibName:@"MediaViewController" bundle:nil];
[delegate switchView:self toView:mediaView.view];
}
我究竟做错了什么？？
谁能告诉我如何将更多子视图连接到 UINavigationController 我希望其中一个子视图成为视频播放器 - 离线 - 而另一个是找到用户位置的地图
我是初学者....谢谢大家当我知道我会帮助别人:)）