我已根据Facebook指南在我的iOS应用程序中实施了Facebook SDK，并在我的AppDelegate中设置了：
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现在，我已经在我的应用程序中实现了切换，并且当应用程序从头开始时，- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions{
// more code
return [[FBSDKApplicationDelegate sharedInstance] application:application didFinishLaunchingWithOptions:launchOptions];
}
将永远不会被调用，因为FBSDKApplicationDelegate sharedInstance返回false。
所以我的问题：如果我没有返回- (BOOL) application:(UIApplication *)application willContinueUserActivityWithType:(NSString *)userActivityType的结果并且我返回自定义结果，是否有任何副作用？例如：
[FBSDKApplicationDelegate sharedInstance]application:didFinishLaunchingWithOptions答案 0 :(得分：3)
[FBSDKApplicationDelegate application: didFinishLaunchingWithOptions:]
应该调用方法只是为了正确使用Facebook SDK
[UIApplicationDelegate application:didFinishLaunchingWithOptions:]方法
适用于您应用的AppDelegate。
如果网址用于Facebook SDK，则此方法返回YES，否则返回NO。
要发布Facebook登录或Facebook对话（或任何需要切换到原生Facebook应用或Safari的操作）的结果，您需要将
AppDelegate与FBSDKApplicationDelegate联系起来。在你的AppDelegate.m中添加：
// AppDelegate.m
#import <FBSDKCoreKit/FBSDKCoreKit.h>
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
[[FBSDKApplicationDelegate sharedInstance] application:application
didFinishLaunchingWithOptions:launchOptions];
return YES;
}
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
return [[FBSDKApplicationDelegate sharedInstance] application:application
openURL:url
sourceApplication:sourceApplication
annotation:annotation
];
}