'observe' 的模糊使用 - myQuery.observe(GFEventType)答案

【问题标题】：Ambiguous use of 'observe' - myQuery.observe(GFEventType)'observe' 的模糊使用 - myQuery.observe(GFEventType)
【发布时间】：2020-02-18 15:05:12
【问题描述】：

我正在尝试通过 GeoFire 查找用户，由于某种原因，此语法不适用于我....

  func findUsers () {
    guard let userLat = userDefault.value(forKey: "current_location_latitude") as? String, let userLong = userDefault.value(forKey: "current_location_longitude") as? String else {return}

    let location: CLLocation = CLLocation(latitude: CLLocationDegrees(Double(userLat)!), longitude: CLLocationDegrees(Double(userLong)!))

    myQuery = geoFire.query(at: location, withRadius: distance)

 --->  ** myQuery.observe(GFEventType.keyEntered) { (key, location) ** in
        print(key)
    }


}

给我一个“模糊使用'观察者'”的错误

【问题讨论】：

标签： jquery ios swift observers geofire

【解决方案1】：

这对我有用：

func findUsers () {
    guard let userLat = userDefault.value(forKey: "current_location_latitude") as? String, let userLong = userDefault.value(forKey: "current_location_longitude") as? String else {return}

    let location: CLLocation = CLLocation(latitude: CLLocationDegrees(Double(userLat)!), longitude: CLLocationDegrees(Double(userLong)!))

    myQuery = geoFire.query(at: location, withRadius: distance)

    myQuery.observe(.keyEntered, with: { (key, location) in
        print(key)
    })
}

【讨论】：