远程配置A/B测试无法在iOS上提供结果 [英] Remote Config A/B Test does not provide results on iOS

问题描述

2天前，我在iOS应用上使用以下代码在Firebase Remote Config上创建并启动了A/B测试:

I have created and started an A/B Test on Firebase Remote Config 2 days ago on my iOS app with this code:

[FIRApp configure];
[FIRRemoteConfig.remoteConfig fetchWithCompletionHandler:^(FIRRemoteConfigFetchStatus status, NSError * _Nullable error) {
        // Do nothing
    }];
[FIRRemoteConfig.remoteConfig activateFetched];

我已经确认测试正在进行，因为在某些设备上我可以看到测试正在进行.

I have confirmed that the test is live because on some devices I can see the test going on.

问题在于，两天后，Firebase控制台一直说0个用户参加了该实验.另一方面，我使用相同的代码在Android上进行了另一项测试，几个小时后我就可以看到活动.

The problem is that, after two days, the Firebase Console keeps saying that 0 users have participated on the experiment. On the other hand, I've done a another test on Android with the same code and I can see activity after few hours.

有什么我想念的吗?

编辑-Pod版本:

Using Firebase (4.5.0)
Using FirebaseABTesting (1.0.0)
Using FirebaseAnalytics (4.0.4)
Using FirebaseCore (4.0.10)
Using FirebaseInstanceID (2.0.5)
Using FirebasePerformance (1.0.6)
Using FirebaseRemoteConfig (2.1.0)

推荐答案

最后，我重现了该问题并找到了解决方法.

Finally I reproduced the issue and found a workaround.

关键是要从application:didFinishLaunchingWithOptions:方法中分离activateFetched.

The key is detaching activateFetched from the application:didFinishLaunchingWithOptions: method.

因此，这是解决方法(已在Firebase 4.7.0中进行了测试):

So, this is the workaround (tested with Firebase 4.7.0):

[FIRApp configure];
[FIRRemoteConfig.remoteConfig fetchWithExpirationDuration:60*60 completionHandler:^(FIRRemoteConfigFetchStatus status, NSError * _Nullable error) {
    // Do nothing
}];

dispatch_async(dispatch_get_main_queue(), ^{
    [FIRRemoteConfig.remoteConfig activateFetched];
});

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