Me enseño a mí mismo Objective-C y iOS programación con "IOS Programming: The Big Nerd Ranch guide (2nd Edition) y me encontré con un problema donde el tutorial quiere que cree conexiones a un objeto delegado de la aplicación, pero este objeto no aparece en la lista de objetos en el constructor Interfaz para mí. Estoy bastante seguro de que es un error tipográfico o una versión diferente, ya que el libro está ligeramente por detrás de mi versión de Xcode (4.2). he incluido el código. Estoy bastante seguro de que el objeto MOCAppDelegate es lo que debería aparecer en IB, pero aún no estoy lo suficientemente familiar como para saber qué cambios de código necesito para que eso ocurra. Pregunta específica: ¿Cómo ajusto el código? a continuación para que obtenga un objeto en la lista de Objetos en IB para que pueda realizar las conexiones como se indica en el gráfico del tutorial?Xcode Interface Builder No muestra App Delegate Object
Nota: Me investigó y encontró esto: Having trouble hooking up instance variables to AppDelegate pero esta solución no funciona para mí (o que no aplicó correctamente)
del encabezado del archivo
#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
@interface MOCAppDelegate : UIResponder <UIApplicationDelegate, CLLocationManagerDelegate>
{
CLLocationManager *locationManager;
IBOutlet MKMapView *worldView;
IBOutlet UIActivityIndicatorView *activityIndicator;
IBOutlet UITextField *locationTitleField;
}
@property (strong, nonatomic) IBOutlet UIWindow *window;
@end
Implementación del archivo
#import "MOCAppDelegate.h"
@implementation MOCAppDelegate
@synthesize window = _window;
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
//Create location manager object
locationManager = [[CLLocationManager alloc] init];
[locationManager setDelegate:self];
//We want all results from the location manager
[locationManager setDistanceFilter:kCLDistanceFilterNone];
//And we want it to be as accurate as possible
//regardless of how much time/power it takes
[locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
//Tell our location manager to start looking for it location immediately
[locationManager startUpdatingLocation];
//We also want to know our heading
if (locationManager.headingAvailable == true) {
[locationManager startUpdatingHeading];
}
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.window.backgroundColor = [UIColor darkGrayColor];
[self.window makeKeyAndVisible];
return YES;
}
- (void)locationManager:(CLLocationManager *)manager
didUpdateToLocation:(CLLocation *)newLocation
fromLocation:(CLLocation *)oldLocation
{
NSLog(@"%@", newLocation);
}
- (void)locationManager:(CLLocationManager *)manager
didUpdateHeading:(CLHeading *)newHeading
{
NSLog(@"%@", newHeading);
}
- (void)locationManager:(CLLocationManager *)manager
didFailWithError:(NSError *)error
{
NSLog(@"Could not find location: %@", error);
}
- (void)dealloc
{
if([locationManager delegate] == self)
[locationManager setDelegate:nil];
}
- (void)applicationWillResignActive:(UIApplication *)application
{
/*
Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
*/
}
- (void)applicationDidEnterBackground:(UIApplication *)application
{
/*
Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
*/
}
- (void)applicationWillEnterForeground:(UIApplication *)application
{
/*
Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
*/
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
/*
Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
*/
}
- (void)applicationWillTerminate:(UIApplication *)application
{
/*
Called when the application is about to terminate.
Save data if appropriate.
See also applicationDidEnterBackground:.
*/
}
@end
¡Gracias! Este paso fundamental fue omitido en la mayoría de las guías. – pretzels1337
También estoy agradecido. Hay algunos documentos que necesitan ser actualizados. ¡Felicitaciones a Stack Overflow por mostrar preguntas similares mientras escribes las tuyas! – McUsr