xcode - Incomplete Implementation and Method Definition ".." not found

Question

I'm a beginner in Xcode and I have a problem. When I started my App in the iOS Simulator the App started an then failed. It tell me that I've an Incomplete Implementation. It says Method Definiton for "page" not found.

AppDelegate.h

#import <UIKit/UIKit.h>
 #import <MapKit/MapKit.h>




@class ViewController;

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@property (strong, nonatomic) ViewController *viewController;

@property(nonatomic, retain) MKMapView *mapView;

-(IBAction)page:(id)sender;

@end

ViewController.h

#import <UIKit/UIKit.h>
#import "MapKit/MapKit.h"



  @interface ViewController : UIViewController {



 IBOutlet MKMapView *mapView;
     IBOutlet UISegmentedControl *maptype;

}


- (IBAction)locate:(id)sender;
- (IBAction)page:(id)sender;

@end

---

AppDelegate.m

#import "AppDelegate.h"

#import "ViewController.h"

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary     *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
// Override point for customization after application launch.
self.viewController = [[ViewController alloc] initWithNibName:@"ViewController"      bundle:nil];
self.window.rootViewController = self.viewController;
[self.window makeKeyAndVisible];
return YES;
}

Can someone help ? Thanks a lot !

Answer 1

检查您是否错过了在ViewController.m file.

-(IBAction)page:(id)sender  
{   
// your code here  
}