firestore query android code example

Example 1: how to query in firestore

db.collection("cities").where("capital", "==", true)
    .get()
    .then(function(querySnapshot) {
        querySnapshot.forEach(function(doc) {
            // doc.data() is never undefined for query doc snapshots
            console.log(doc.id, " => ", doc.data());
        });
    })
    .catch(function(error) {
        console.log("Error getting documents: ", error);
    });

Example 2: firestore geopoint query example in android

QueryLocation queryLocation = QueryLocation.fromDegrees(latitude, longitude);
Distance searchDistance = new Distance(1.0, DistanceUnit.KILOMETERS);
geoFire.query()
    .whereEqualTo("title", "The Title")
    .whereNearTo(queryLocation, distance)
    .orderBy("timestamp", Query.Direction.DESCENDING)
    .limit(10)
    .build()
    .get()
    .addOnCompleteListener(task -> {
      if (task.isSuccessful()) {
        Log.i("DB", "Got Documents.");
      } else {
        Log.w("DB", "Error getting documents.", task.getException());
      }
    });