com.google.firebase.firestore.EventListener Java Examples
The following examples show how to use
com.google.firebase.firestore.EventListener.
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Example #1
| Source File: DocSnippets.java From snippets-android with Apache License 2.0 | 7 votes |
|
public void listenToDocument() {
// [START listen_document]
final DocumentReference docRef = db.collection("cities").document("SF");
docRef.addSnapshotListener(new EventListener<DocumentSnapshot>() {
@Override
public void onEvent(@Nullable DocumentSnapshot snapshot,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "Listen failed.", e);
return;
}
if (snapshot != null && snapshot.exists()) {
Log.d(TAG, "Current data: " + snapshot.getData());
} else {
Log.d(TAG, "Current data: null");
}
}
});
// [END listen_document]
}
Example #2
| Source File: DocSnippets.java From snippets-android with Apache License 2.0 | 6 votes |
|
public void offlineListen(FirebaseFirestore db) {
// [START offline_listen]
db.collection("cities").whereEqualTo("state", "CA")
.addSnapshotListener(MetadataChanges.INCLUDE, new EventListener<QuerySnapshot>() {
@Override
public void onEvent(@Nullable QuerySnapshot querySnapshot,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "Listen error", e);
return;
}
for (DocumentChange change : querySnapshot.getDocumentChanges()) {
if (change.getType() == Type.ADDED) {
Log.d(TAG, "New city:" + change.getDocument().getData());
}
String source = querySnapshot.getMetadata().isFromCache() ?
"local cache" : "server";
Log.d(TAG, "Data fetched from " + source);
}
}
});
// [END offline_listen]
}
Example #3
| Source File: DocSnippets.java From snippets-android with Apache License 2.0 | 6 votes |
|
public void handleListenErrors() {
// [START handle_listen_errors]
db.collection("cities")
.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(@Nullable QuerySnapshot snapshots,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "listen:error", e);
return;
}
for (DocumentChange dc : snapshots.getDocumentChanges()) {
if (dc.getType() == Type.ADDED) {
Log.d(TAG, "New city: " + dc.getDocument().getData());
}
}
}
});
// [END handle_listen_errors]
}
Example #4
| Source File: DocSnippets.java From snippets-android with Apache License 2.0 | 6 votes |
|
public void detachListener() {
// [START detach_listener]
Query query = db.collection("cities");
ListenerRegistration registration = query.addSnapshotListener(
new EventListener<QuerySnapshot>() {
// [START_EXCLUDE]
@Override
public void onEvent(@Nullable QuerySnapshot snapshots,
@Nullable FirebaseFirestoreException e) {
// ...
}
// [END_EXCLUDE]
});
// ...
// Stop listening to changes
registration.remove();
// [END detach_listener]
}
Example #5
| Source File: DocSnippets.java From snippets-android with Apache License 2.0 | 6 votes |
|
public void listenToMultiple() {
// [START listen_multiple]
db.collection("cities")
.whereEqualTo("state", "CA")
.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(@Nullable QuerySnapshot value,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "Listen failed.", e);
return;
}
List<String> cities = new ArrayList<>();
for (QueryDocumentSnapshot doc : value) {
if (doc.get("name") != null) {
cities.add(doc.getString("name"));
}
}
Log.d(TAG, "Current cites in CA: " + cities);
}
});
// [END listen_multiple]
}
Example #6
| Source File: DocSnippets.java From snippets-android with Apache License 2.0 | 6 votes |
|
public void listenToDocumentLocal() {
// [START listen_document_local]
final DocumentReference docRef = db.collection("cities").document("SF");
docRef.addSnapshotListener(new EventListener<DocumentSnapshot>() {
@Override
public void onEvent(@Nullable DocumentSnapshot snapshot,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "Listen failed.", e);
return;
}
String source = snapshot != null && snapshot.getMetadata().hasPendingWrites()
? "Local" : "Server";
if (snapshot != null && snapshot.exists()) {
Log.d(TAG, source + " data: " + snapshot.getData());
} else {
Log.d(TAG, source + " data: null");
}
}
});
// [END listen_document_local]
}
Example #7
| Source File: DocSnippets.java From snippets-android with Apache License 2.0 | 6 votes |
|
public void listenForUsers() {
// [START listen_for_users]
// Listen for users born before 1900.
//
// You will get a first snapshot with the initial results and a new
// snapshot each time there is a change in the results.
db.collection("users")
.whereLessThan("born", 1900)
.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(@Nullable QuerySnapshot snapshots,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "Listen failed.", e);
return;
}
Log.d(TAG, "Current users born before 1900: " + snapshots);
}
});
// [END listen_for_users]
}
Example #8
| Source File: SpecTestCase.java From firebase-android-sdk with Apache License 2.0 | 5 votes |
|
private void doRemoveSnapshotsInSyncListener() throws Exception {
if (snapshotsInSyncListeners.size() == 0) {
throw Assert.fail("There must be a listener to unlisten to");
} else {
EventListener<Void> listenerToRemove = snapshotsInSyncListeners.remove(0);
eventManager.removeSnapshotsInSyncListener(listenerToRemove);
}
}
Example #9
| Source File: DocSnippets.java From snippets-android with Apache License 2.0 | 5 votes |
|
public void listenState() {
// [START listen_state]
db.collection("cities")
.whereEqualTo("state", "CA")
.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(@Nullable QuerySnapshot snapshots,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "listen:error", e);
return;
}
for (DocumentChange dc : snapshots.getDocumentChanges()) {
if (dc.getType() == Type.ADDED) {
Log.d(TAG, "New city: " + dc.getDocument().getData());
}
}
if (!snapshots.getMetadata().isFromCache()) {
Log.d(TAG, "Got initial state.");
}
}
});
// [END listen_state]
}
Example #10
| Source File: DocSnippets.java From snippets-android with Apache License 2.0 | 5 votes |
|
public void listenToDiffs() {
// [START listen_diffs]
db.collection("cities")
.whereEqualTo("state", "CA")
.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(@Nullable QuerySnapshot snapshots,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "listen:error", e);
return;
}
for (DocumentChange dc : snapshots.getDocumentChanges()) {
switch (dc.getType()) {
case ADDED:
Log.d(TAG, "New city: " + dc.getDocument().getData());
break;
case MODIFIED:
Log.d(TAG, "Modified city: " + dc.getDocument().getData());
break;
case REMOVED:
Log.d(TAG, "Removed city: " + dc.getDocument().getData());
break;
}
}
}
});
// [END listen_diffs]
}
Example #11
| Source File: DocSnippets.java From snippets-android with Apache License 2.0 | 5 votes |
|
public void listenWithMetadata() {
// [START listen_with_metadata]
// Listen for metadata changes to the document.
DocumentReference docRef = db.collection("cities").document("SF");
docRef.addSnapshotListener(MetadataChanges.INCLUDE, new EventListener<DocumentSnapshot>() {
@Override
public void onEvent(@Nullable DocumentSnapshot snapshot,
@Nullable FirebaseFirestoreException e) {
// ...
}
});
// [END listen_with_metadata]
}
Example #12
| Source File: DriverMapPresenter.java From ridesharing-android with MIT License | 5 votes |
|
private void subscribeNewOrderUpdates() {
if (newOrderListenerRegistration != null) {
newOrderListenerRegistration.remove();
}
newOrderListenerRegistration = db.collection("orders")
.whereIn("status", Arrays.asList(Order.NEW, Order.CANCELLED))
.addSnapshotListener(new EventListener<QuerySnapshot>() {
@SuppressWarnings("ConstantConditions")
@Override
public void onEvent(@Nullable QuerySnapshot value,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "Listen failed.", e);
return;
}
if (value != null) {
List<Order> orders = new ArrayList<>();
OrderParser parser = new OrderParser();
for (QueryDocumentSnapshot doc : value) {
if (Order.CANCELLED.equals(doc.getString("status"))) {
if (mState.newOrders.containsKey(doc.getId())) {
mState.newOrders.remove(doc.getId()).marker.remove();
}
continue;
}
Order order = parser.parse(doc);
orders.add(order);
}
updateNewOrders(orders);
}
}
});
}
Example #13
| Source File: EventAccumulator.java From firebase-android-sdk with Apache License 2.0 | 5 votes |
|
public EventListener<T> listener() {
return (value, error) -> {
synchronized (EventAccumulator.this) {
hardAssert(error == null, "Unexpected error: %s", error);
Log.i("EventAccumulator", "Received new event: " + value);
events.add(value);
checkFulfilled();
}
};
}
Example #14
| Source File: FirestoreClient.java From firebase-android-sdk with Apache License 2.0 | 5 votes |
|
public void removeSnapshotsInSyncListener(EventListener<Void> listener) {
// Checks for shutdown but does not raise error, allowing remove after shutdown to be a no-op.
if (isTerminated()) {
return;
}
asyncQueue.enqueueAndForget(() -> eventManager.removeSnapshotsInSyncListener(listener));
}
Example #15
| Source File: FirestoreClient.java From firebase-android-sdk with Apache License 2.0 | 5 votes |
|
/** Starts listening to a query. */
public QueryListener listen(
Query query, ListenOptions options, EventListener<ViewSnapshot> listener) {
this.verifyNotTerminated();
QueryListener queryListener = new QueryListener(query, options, listener);
asyncQueue.enqueueAndForget(() -> eventManager.addQueryListener(queryListener));
return queryListener;
}
Example #16
| Source File: SpecTestCase.java From firebase-android-sdk with Apache License 2.0 | 4 votes |
|
private void doAddSnapshotsInSyncListener() {
EventListener<Void> eventListener =
(Void v, FirebaseFirestoreException error) -> snapshotsInSyncEvents += 1;
snapshotsInSyncListeners.add(eventListener);
eventManager.addSnapshotsInSyncListener(eventListener);
}
Example #17
| Source File: MessageHistory.java From Hify with MIT License | 4 votes |
|
public void getTextMessage(){
refreshLayout.setRefreshing(true);
getView().findViewById(R.id.default_item).setVisibility(View.GONE);
mFirestore.collection("Users")
.document(mAuth.getCurrentUser().getUid())
.collection("Notifications")
.orderBy("timestamp", Query.Direction.DESCENDING)
.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(QuerySnapshot queryDocumentSnapshots, FirebaseFirestoreException e) {
if(e!=null){
refreshLayout.setRefreshing(false);
Toasty.error(getView().getContext(), "Some technical error occurred", Toasty.LENGTH_SHORT, true).show();
Log.w("error","listen",e);
return;
}
if(!queryDocumentSnapshots.isEmpty()){
for(DocumentChange doc:queryDocumentSnapshots.getDocumentChanges()) {
if (doc.getType() == DocumentChange.Type.ADDED) {
Message message = doc.getDocument().toObject(Message.class).withId(doc.getDocument().getId());
messages.add(message);
messageTextAdapter.notifyDataSetChanged();
refreshLayout.setRefreshing(false);
}
}
if(messages.isEmpty()){
refreshLayout.setRefreshing(false);
getView().findViewById(R.id.default_item).setVisibility(View.VISIBLE);
}
}else {
refreshLayout.setRefreshing(false);
getView().findViewById(R.id.default_item).setVisibility(View.VISIBLE);
}
}
});
}
Example #18
| Source File: RiderMapPresenter.java From ridesharing-android with MIT License | 4 votes |
|
private void subscribeDriverUpdates() {
if (driversListenerRegistration != null) {
driversListenerRegistration.remove();
}
driversListenerRegistration = db.collection("users")
.whereEqualTo("role", User.USER_ROLE_DRIVER)
.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(@Nullable QuerySnapshot value,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "Listen failed.", e);
return;
}
if (value != null) {
UserParser parser = new UserParser();
for (QueryDocumentSnapshot doc : value) {
User driver = mState.drivers.get(doc.getId());
if (driver == null) {
final User newDriver = parser.parse(doc);
if (newDriver != null && !TextUtils.isEmpty(newDriver.deviceId)) {
newDriver.deviceUpdatesHandler = new MyDeviceUpdatesHandler() {
@Override
public void onLocationUpdateReceived(@NonNull Location location) {
newDriver.location = location;
if (newDriver.marker == null) {
newDriver.marker = mView.addMarker(newDriver);
} else {
newDriver.marker.setRotation(newDriver.location.getBearing());
newDriver.marker.setPosition(
new LatLng(newDriver.location.getLatitude(), newDriver.location.getLongitude())
);
}
}
};
hyperTrackViews.subscribeToDeviceUpdates(newDriver.deviceId, newDriver.deviceUpdatesHandler);
mState.drivers.put(newDriver.id, newDriver);
}
}
}
}
}
});
}
Example #19
| Source File: QueryListener.java From firebase-android-sdk with Apache License 2.0 | 4 votes |
|
public QueryListener(
Query query, EventManager.ListenOptions options, EventListener<ViewSnapshot> listener) {
this.query = query;
this.listener = listener;
this.options = options;
}
Example #20
| Source File: SolutionRateLimiting.java From snippets-android with Apache License 2.0 | 4 votes |
|
public void startUpdates() {
String deviceId = "my-device-id";
final DocumentReference reference = db.collection("readings").document(deviceId);
// Listen to the document, including metadata changes so we get notified
// when writes have propagated to the server.
mRegistration = reference.addSnapshotListener(MetadataChanges.INCLUDE, new EventListener<DocumentSnapshot>() {
@Override
public void onEvent(@Nullable DocumentSnapshot documentSnapshot,
@Nullable FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "onEvent:error", e);
}
if (documentSnapshot != null && !documentSnapshot.getMetadata().hasPendingWrites()) {
Log.d(TAG, "Got server snapshot.");
mReadyForUpdate = true;
}
}
});
// On a regular interval, attempt to update the document. Only perform the update
// if we have gotten a snapshot from the server since the last update, which means
// we are ready to update again.
mHandler.postDelayed(new Runnable() {
@Override
public void run() {
if (mReadyForUpdate) {
Log.d(TAG, "Updating sensor data");
// Update the document
Map<String, Object> updates = new HashMap<>();
updates.put("temperature", getCurrentTemperature());
updates.put("timestamp", FieldValue.serverTimestamp());
reference.set(updates, SetOptions.merge());
// Mark 'ready for update' as false until we get the next snapshot from the server
mReadyForUpdate = false;
} else {
Log.d(TAG, "Not ready for update");
}
// Schedule the next update
mHandler.postDelayed(this, UPDATE_INTERVAL_MS);
}
}, UPDATE_INTERVAL_MS);
}
Example #21
| Source File: AsyncEventListener.java From firebase-android-sdk with Apache License 2.0 | 4 votes |
|
public AsyncEventListener(Executor executor, EventListener<T> eventListener) {
this.executor = executor;
this.eventListener = eventListener;
}
Example #22
| Source File: FirestoreClient.java From firebase-android-sdk with Apache License 2.0 | 4 votes |
|
public void addSnapshotsInSyncListener(EventListener<Void> listener) {
verifyNotTerminated();
asyncQueue.enqueueAndForget(() -> eventManager.addSnapshotsInSyncListener(listener));
}
Example #23
| Source File: EventManager.java From firebase-android-sdk with Apache License 2.0 | 4 votes |
|
/** Call all global snapshot listeners that have been set. */
private void raiseSnapshotsInSyncEvent() {
for (EventListener<Void> listener : snapshotsInSyncListeners) {
listener.onEvent(null, null);
}
}
Example #24
| Source File: EventManager.java From firebase-android-sdk with Apache License 2.0 | 4 votes |
|
public void removeSnapshotsInSyncListener(EventListener<Void> listener) {
snapshotsInSyncListeners.remove(listener);
}
Example #25
| Source File: EventManager.java From firebase-android-sdk with Apache License 2.0 | 4 votes |
|
public void addSnapshotsInSyncListener(EventListener<Void> listener) {
snapshotsInSyncListeners.add(listener);
listener.onEvent(null, null);
}
Example #26
| Source File: AnswersActivity.java From Hify with MIT License | 4 votes |
|
private void getAnswers() {
answers.clear();
refreshLayout.setRefreshing(true);
findViewById(R.id.default_item).setVisibility(View.GONE);
mFirestore.collection("Answers")
.orderBy("timestamp", Query.Direction.DESCENDING)
.whereEqualTo("question_id",doc_id)
.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(@Nullable QuerySnapshot queryDocumentSnapshots, @Nullable FirebaseFirestoreException e) {
if(e!=null){
refreshLayout.setRefreshing(false);
Log.e(TAG,e.getLocalizedMessage());
return;
}
if(queryDocumentSnapshots.isEmpty()){
refreshLayout.setRefreshing(false);
findViewById(R.id.default_item).setVisibility(View.VISIBLE);
}else{
for(DocumentChange doc:queryDocumentSnapshots.getDocumentChanges()) {
if (doc.getType() == DocumentChange.Type.ADDED) {
refreshLayout.setRefreshing(false);
Answers answer = doc.getDocument().toObject(Answers.class).withId(doc.getDocument().getId());
if (doc.getDocument().getString("is_answer").toLowerCase().equals("yes")) {
answers.add(0, answer);
} else {
answers.add(answer);
}
adapter.notifyDataSetChanged();
}
}
}
}
});
}
Example #27
| Source File: AllQuestions.java From Hify with MIT License | 4 votes |
|
public void filterResult(String subject){
if(subject.equals("All")){
getQuestions();
}else{
refreshLayout.setRefreshing(true);
getView().findViewById(R.id.default_item).setVisibility(View.GONE);
Query firstQuery = mFirestore.collection("Questions")
.whereEqualTo("subject",subject)
.orderBy("timestamp", Query.Direction.DESCENDING);
firstQuery.addSnapshotListener(getActivity(), new EventListener<QuerySnapshot>() {
@Override
public void onEvent(QuerySnapshot documentSnapshots, FirebaseFirestoreException e) {
try {
if (!documentSnapshots.isEmpty()) {
for (DocumentChange doc : documentSnapshots.getDocumentChanges()) {
if (doc.getType() == DocumentChange.Type.ADDED) {
if (!doc.getDocument().getString("id").equals(mCurrentUser.getUid())) {
AllQuestionsModel question = doc.getDocument().toObject(AllQuestionsModel.class).withId(doc.getDocument().getId());
allQuestionsModelList.add(question);
adapter.notifyDataSetChanged();
refreshLayout.setRefreshing(false);
}
}
}
if(allQuestionsModelList.isEmpty()){
getView().findViewById(R.id.default_item).setVisibility(View.VISIBLE);
refreshLayout.setRefreshing(false);
}
} else {
getView().findViewById(R.id.default_item).setVisibility(View.VISIBLE);
refreshLayout.setRefreshing(false);
}
}catch (NullPointerException eee){
Toasty.error(context, "Some technical error occurred", Toasty.LENGTH_SHORT,true).show();
adapter.notifyDataSetChanged();
if(allQuestionsModelList.isEmpty()){
getView().findViewById(R.id.default_item).setVisibility(View.VISIBLE);
refreshLayout.setRefreshing(false);
}
} catch (Exception ee){
ee.printStackTrace();
Toasty.error(context, "Some technical error occurred", Toasty.LENGTH_SHORT, true).show();
if(allQuestionsModelList.isEmpty()){
refreshLayout.setRefreshing(false);
getView().findViewById(R.id.default_item).setVisibility(View.VISIBLE);
}
}
}
});
}
}
Example #28
| Source File: AllQuestions.java From Hify with MIT License | 4 votes |
|
private void getQuestions() {
getView().findViewById(R.id.default_item).setVisibility(View.GONE);
refreshLayout.setRefreshing(true);
Query firstQuery = mFirestore.collection("Questions")
.orderBy("timestamp", Query.Direction.DESCENDING);
firstQuery.addSnapshotListener(new EventListener<QuerySnapshot>() {
@Override
public void onEvent(QuerySnapshot documentSnapshots, FirebaseFirestoreException e) {
if (!documentSnapshots.isEmpty()) {
for (DocumentChange doc : documentSnapshots.getDocumentChanges()) {
if (doc.getType() == DocumentChange.Type.ADDED) {
if (!doc.getDocument().getString("id").equals(mCurrentUser.getUid())) {
AllQuestionsModel question = doc.getDocument().toObject(AllQuestionsModel.class).withId(doc.getDocument().getId());
allQuestionsModelList.add(question);
adapter.notifyDataSetChanged();
refreshLayout.setRefreshing(false);
}
}
}
if(allQuestionsModelList.isEmpty()){
getView().findViewById(R.id.default_item).setVisibility(View.VISIBLE);
refreshLayout.setRefreshing(false);
}
} else {
getView().findViewById(R.id.default_item).setVisibility(View.VISIBLE);
refreshLayout.setRefreshing(false);
}
}
});
}
