ios - 如何处理有很多返回值的 UIApplication handleOpenURL？

Question

我在使用 AppDelegate 中的函数时遇到问题

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation

很多库必须在这个函数中放置一些返回码来进行配置。像这样:

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
//facebook
 //attempt to extract a token from the url
    return [FBAppCall handleOpenURL:url
                  sourceApplication:sourceApplication
                    fallbackHandler:^(FBAppCall *call) {
                        NSLog(@"In fallback handler");
                    }];

//library
BOOL urlHasBeenHandledByDispatcher = [[GRKConnectorsDispatcher sharedInstance] dispatchURLToConnectingServiceConnector:url];
if ( urlHasBeenHandledByDispatcher  ) return YES;
return NO;

//facebookSession
return [FBSession.activeSession handleOpenURL:url];
}

在这种情况下如何配置才能使所有库正常工作？

Answer 1

您应该只更改代码并返回一次值。试试下面的代码:

- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
//facebook
 //attempt to extract a token from the url
    BOOL result = NO;
    result |= [FBAppCall handleOpenURL:url
                  sourceApplication:sourceApplication
                    fallbackHandler:^(FBAppCall *call) {
                        NSLog(@"In fallback handler");
                    }];

//library
result |= [[GRKConnectorsDispatcher sharedInstance] dispatchURLToConnectingServiceConnector:url];
//facebookSession
result |= [FBSession.activeSession handleOpenURL:url];
return result;
}

如果至少有一个库返回YES，此方法将返回YES，否则返回NO。