ios Handoff在launchOptions中缺少NSUserActivity？

Question

我在我们的应用程序中实现了Handoff,当应用程序在前台或后台运行时,它适用于Web到应用程序切换,反之亦然.

但是,如果应用程序没有运行,那么如果用户从web启动应用程序到应用程序切换,则在launchOptions字典中,我得到了UIApplicationLaunchOptionsUserActivityDictionaryKey,但缺少对活动的引用.

看截图:

正如你所看到的,我只获得了ID NSUserActivity.这是iOS 9中的错误吗？

有没有办法通过使用id来获取对活动的引用？

编辑,这是代码,虽然我不认为这是相关的

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    if (launchOptions && [[launchOptions allKeys] containsObject:UIApplicationLaunchOptionsUserActivityDictionaryKey]) {
        __block NSUserActivity *activity;

        NSDictionary *userActivityDictionary = [launchOptions objectForKey:UIApplicationLaunchOptionsUserActivityDictionaryKey];
        if (userActivityDictionary) {
            [userActivityDictionary enumerateKeysAndObjectsUsingBlock:^(id  _Nonnull key, id  _Nonnull obj, BOOL * _Nonnull stop) {
                if ([obj isKindOfClass:[NSUserActivity class]]) {
                    activity = obj;
                }
            }];
        }

        //app was started by URL (deep linking), check parameters
        if (activity) {
            NSURL *url = activity.webpageURL;
            //resume from URL
        }
    }

    return YES;
}

Answer 1

好,

我已经向Apple提交了一份有关此问题的TSI,似乎这不是一个错误,而是设计.

您可以在application:continueUserActivity:restorationHandler委托中恢复您的活动,在我的情况下没有调用.

好吧,我的错误是你需要在application:didFinishLaunchingWithOptions:方法中返回YES ,否则如果你返回NO,application:continueUserActivity:restorationHandler则不会被调用.

我们已经在我们的应用程序中实现了FB,所以我们返回[[FBSDKApplicationDelegate sharedInstance] application:application didFinishLaunchingWithOptions:launchOptions]哪个将返回NO.

我已将application:didFinishLaunchingWithOptions:函数中的代码更改为此

if (launchOptions && [[launchOptions allKeys] containsObject:UIApplicationLaunchOptionsUserActivityDictionaryKey]) {
        return YES;
    }
else {
        return [[FBSDKApplicationDelegate sharedInstance] application:application didFinishLaunchingWithOptions:launchOptions];
}

这样application:continueUserActivity:restorationHandler就可以成功调用委托,并且可以成功恢复活动.