Question

我尝试了下面的代码来获取由附近特定位置过滤的位置数据。但我不知道如何获取文件。

FirebaseApp.configure()
        let db = Firestore.firestore()
        let geoFirestoreRef = db.collection("spot")
        let geoFirestore = GeoFirestore(collectionRef: geoFirestoreRef)
        
        // Query using CLLocation
        let center = CLLocation(latitude: 35.681236, longitude: 139.767125)
        // Query locations at [37.7832889, -122.4056973] with a radius of 100km
        var circleQuery = geoFirestore.query(withCenter: center, radius: 100.0)

        let _ = circleQuery.observe(.documentEntered, with: { (key, location) in
            geoFirestoreRef.document(key!).getDocument  { (document, error) in
                           if let document = document, document.exists {
                               print(document)
                           } else {
                               print("Document does not exist.")
                           }
                       }
            print("The document with documentID '\(key)' entered the search area and is at location '\(location)'")
        })

circleQuery

此变量只返回GFSCircleQuery对象。我不知道如何获取按查询过滤的实际文档。

Answer 1

在Firebase中进行查询时，可以调用.getDocuments或类似名称。 Firebase在线提供了非常详细的文档，您可能应该从中开始。 https://firebase.google.com/docs

如何使用geofirestore获取查询Firestore并快速获取文档

1 个答案: