objective-c - 方法 'ApplicationDidBecomeActive'的重复声明

Question

//  Created by Robert Van Gilder on 30/05/2014.
//  Copyright (c) 2014 Robert Van Gilder. All rights reserved.
//

#import "AppDelegate.h"
#import <FacebookSDK/FacebookSDK.h>
#import <Parse/Parse.h>

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [PFFacebookUtils initializeFacebook];

    {[Parse setApplicationId:@"ycWShHVTsY7Xawt0dupTN1YMWFeyMLlhG7K9R0rZ"
                   clientKey:@"8AmzExUoqvmppa5k3eaS37RBNB6c1StmlysvvjBr"];}

    {[PFAnalytics trackAppOpenedWithLaunchOptions:launchOptions];}

    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];

    UIViewController* initialViewController = [storyboard instantiateViewControllerWithIdentifier:@"MainViewController"];

    self.window.rootViewController  = initialViewController;

    [self.window makeKeyAndVisible];

    return YES;


}



    - (BOOL)application:(UIApplication *)application
openURL:(NSURL *)url
sourceApplication:(NSString *)sourceApplication
annotation:(id)annotation {
    return [FBAppCall handleOpenURL:url
                  sourceApplication:sourceApplication
                        withSession:[PFFacebookUtils session]];
}

    - (void)applicationDidBecomeActive:(UIApplication *)application {
        [FBAppCall handleDidBecomeActiveWithSession:[PFFacebookUtils session]];
    }


- (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

我在标题中得到错误 - (void)applicationDidBecomeActive:(UIApplication *)application.我不明白为什么会这样。我正在使用Parse SDK和Facebook登录名，并且正在按照Parse的说明进行操作，但是，当我在下面添加此代码部分时，编译器将无法正确理解它并产生各种错误。

- (BOOL)application:(UIApplication *)application 
            openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication
         annotation:(id)annotation {
    return [FBAppCall handleOpenURL:url
                  sourceApplication:sourceApplication
                        withSession:[PFFacebookUtils session]];
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    [FBAppCall handleDidBecomeActiveWithSession:[PFFacebookUtils session]];
}

Answer 1

您有一个重复的-applicationDidBecomeActive声明。第一个错误地缩进到-application:openURL:sourceApplication:annotation:下方。第二个介于-applicationWillEnterForeground:和-applicationWillTerminate:之间。