NSUserActivity切换不适用于自定义数据 [英] NSUserActivity handoff not working for custom data

问题描述

我正在尝试在iPhone和iPad之间使用NSUserActivity测试iOS 8.1切换功能.为此，我既尝试实现自己的解决方案，又尝试使用Apple的 PhotoHandoff 项目.但是，它不起作用.

I'm trying to test out the iOS 8.1 handoff feature with NSUserActivity between my iPhone and my iPad. For this, I tried both implementing my own solution, and to use Apple's PhotoHandoff project. However, it's not working.

如果我提供了webpageURL，则切换工作正常，但是当我尝试使用userData或addUserInfoEntriesFromDictionary时，任何方法都无效，并且我一生无法弄清楚该抓捕的是什么数据工作.

If I provide a webpageURL, the handover works fine, but when I try to use userData or addUserInfoEntriesFromDictionary nothing works, and I can't for the life of me figure out what the catch is to make the data work.

示例代码:

NSUserActivity *activity = [[NSUserActivity alloc] initWithActivityType:@"com.company.MyTestApp.activity"];
activity.title = @"My Activity";
activity.userInfo = @ {};
//    activity.webpageURL = [NSURL URLWithString:@"http://google.com"];

self.userActivity = activity;

[self.userActivity becomeCurrent];
[self.userActivity addUserInfoEntriesFromDictionary:@ { @"nanananan": @[ @"totoro", @"monsters" ] }];

(我也无法使其与具有相应活动类型的Mac应用一起使用)

(I'm also unable to make it work with a Mac app with a corresponding activity type)

推荐答案

我希望您已经找到了解决方案，但是如果有人也偶然发现了这个问题，这是一个解决方案. (实际上与先前的答案没有太大不同)

I hope you found the solution already, but in case somebody stumbles upon this problem too, here is a solution. (Actually not very different from the previous answer)

在没有userInfo的情况下创建用户活动，它将被忽略:

Create user activity without userInfo, it will be ignored:

NSUserActivity *activity = [[NSUserActivity alloc] initWithActivityType:@"..."];
activity.title = @"Test activity";
activity.delegate = self;
activity.needsSave = YES;

self.userActivity = activity;
[self.userActivity becomeCurrent];

强制委托对needSave事件做出反应:

Implement the delegate to react to needSave events:

- (void)userActivityWillSave:(NSUserActivity *)userActivity {
    userActivity.userInfo = @{ @"KEY" : @"VALUE" };
}

当needsSave设置为YES时，将调用此方法并更新userActivity.

When needsSave is set to YES this method will be called and userActivity will be updated.

希望这会有所帮助.

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