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);
});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());
}
});Copyright © 2021 Codeinu
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