如何从 iOS swift 中的 Firebase 远程配置获取整数值？

Question

所以我在我的 iOS 中设置了 Firebase 远程配置默认值，如下所示：

let remoteConfig = RemoteConfig.remoteConfig()

// set remote config default value
let defaultRemoteConfig : [String:NSObject] = [
  "number_of_recommended_events_to_show_per_page" : 15 as NSObject
]

remoteConfig.setDefaults(defaultRemoteConfig)

 // Activate and refetch remote config data. 
 // I use 'Load Value for next time' loading strategy
 remoteConfig.activate()
 remoteConfig.fetch()

然后我想像这样从远程获取值

 // get the value from remote config
let numberOfDocumentsPerQuery = remoteConfig.configValue(forKey: "number_of_recommended_events_to_show_per_page").numberValue as! Int

我需要整数格式的值，但是当我像这样将它转换为 Int 时它崩溃了

这是我在控制台中设置值的方法

为什么是零？如何解决这个问题？

Answer 1

try this!

let numberOfDocumentsPerQuery = remoteConfig.configValue(forKey: "number_of_recommended_events_to_show_per_page").numberValue?.intValue ?? 0

Answer 2

确保在获取远程值之前已在此块中获取数据。

func fetchCloudValues() {
  // WARNING: Don't actually do this in production!
  let fetchDuration: TimeInterval = 0

  RemoteConfig.remoteConfig().fetch(withExpirationDuration: fetchDuration) { [weak self] status, error in

    if let error = error {
      print ("Uh-oh. Got an error fetching remote values \(error)")
      return
    }

    RemoteConfig.remoteConfig().activateFetched()
    print ("Retrieved values from the cloud!")
    let numberOfEvents = RemoteConfig.remoteConfig()
                                            .configValue(forKey: "number_of_recommended_events_to_show_per_page")
                                            .intValue ?? 0
    print("Our app's number of events is \(numberOfEvents)")

  }
}

如何从 iOS swift 中的 Firebase 远程配置获取整数值？

how to get integer value from Firebase Remote Config in iOS swift?

ios

firebase

swift

firebase-remote-config