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Firebase List Adapter Constructor error

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I created a function to display a chat message, I followed a tutorial, and I also looked at the documentation for the Firebase list adapter, but no matter what I do, I get this error: Error:(98, 19) error: constructor FirebaseListAdapter in class FirebaseListAdapter<T> cannot be applied to given types; required: FirebaseListOptions<ChatMessage> found: Chat,Class<ChatMessage>,int,DatabaseReference reason: actual and formal argument lists differ in length where T is a type-variable: T extends Object declared in class FirebaseListAdapter Here is my code: private void displayChatMessage() {

How to dismiss a progress bar even if there is no view to populate in the FirebaseListAdapter?

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问题 I use the FirebaseUI FirebaseListAdapter. It takes some time to load the data and I want to show a spinning circle. I can dismiss the progress bar in by setting the view visibility to invisible in the populateView, but it doesn\'t work if there is no view to populate. How to handle this? 回答1: Update : the FirebaseUI adapters nowadays have an onDataChanged() method that you can override to detect when they're done loading a set of data. See the source code on github. From there: This method

Why I cant use the populateViewHolder override method?

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I'm try to retrieve datafrom database in my fragment onViewCreated method I have used FirebaseRecylerAdapter like below @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); FirebaseRecyclerAdapter<AllUsers, AllUsersViewHolder> firebaseRecyclerAdapter; } public static class AllUsersViewHolder extends RecyclerView.ViewHolder { View view; public AllUsersViewHolder(View itemView) { super(itemView); view = itemView; } } when I use firebaseRecyclerAdapter = new FirebaseRecyclerAdapter it wont give me the

Efficiency of searching using whereArrayContains

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问题 I am curious as to the efficiency of searching for documents in a collection using this code. As the number of documents in the collection grows and the number of items in the array grows will this search become very inefficient? Is there a better way of doing this or is there a schema change I can make to the database to better optimize this? Is there somewhere I can find the time complexity of these functions for the firestore documentation maybe? Query query = db.collection(\"groups\")

How to set addSnapshotListener and remove in populateViewHolder in RecyclerView Item?

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问题 I have implemented RecyclerView with FirebaseUI-Android library . My RecyclerView realtime data change well once i use that FirebaseRecyclerAdapter In Collection that data document have field type as Boolean , Integer, Reference. I want use that Reference to get data in populateViewHolder with addSnapshotListener . Help me! Here is my code: FirebaseRecyclerAdapter<Conv, ConvViewHolder> firebaseConvAdapter = new FirebaseRecyclerAdapter<Conv, ConvViewHolder>( Conv.class, R.layout.users_single

I can't find populateViewHolder Method in FirebaseRecyclerAdapter class

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问题 I want to use FirebaseRecyclerAdapter in my project and I used this code segment in a previous Project FirebaseRecyclerAdapter<ChatMessage, ChatMessageViewHolder> adapter = new FirebaseRecyclerAdapter<ChatMessage, ChatMessageViewHolder>(ChatMessage.class, android.R.layout.two_line_list_item, ChatMessageViewHolder.class, ref) { public void populateViewHolder(ChatMessageViewHolder chatMessageViewHolder, ChatMessage chatMessage, int position) { chatMessageViewHolder.nameText.setText(chatMessage

how to implement a SetOnItemClickListener FirebaseRecyclerViewAdapter

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问题 how to implement a SetOnItemClickListener event in a Firebase RecyclerView Adapter? I use the example of documentation, chat app: private FirebaseRecyclerViewAdapter mAdapter; RecyclerView recycler = (RecyclerView) findViewById(R.id.messages_recycler); recycler.setHasFixedSize(true); recycler.setLayoutManager(new LinearLayoutManager(this)); mAdapter = new FirebaseRecyclerViewAdapter<ChatMessage, ChatMessageViewHolder>(ChatMessage.class, android.R.layout.two_line_list_item,

How to hide an item from Recycler View on a particular condition?

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问题 I am using Firebase Recycler Adapter (Firebase UI Library) to populate Recycler View. I want to hide an item(row) on a condition. I have a LinearLayout containing a recycler view. I set linear layout visibility to Gone in populateViewHolder() method of recycler view adapter. @Override protected void populateViewHolder(UsersViewHolder viewHolder, User user, int position) { if (user.getUserEmail().equals(Utils.decodeEmail(userEmail))) { viewHolder.llMain.setVisibility(View.GONE); return; }

Coupling FirebaseRecyclerViewAdapter to a Boolean/String Map.Entry

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问题 I\'m using the FirebaseRecyclerViewAdapter from the com.firebaseui:firebase-ui:0.2.0 library in many locations of my app. My question is how to apply it in situations where the query argument returns a number of \'index\' entry values (Map.Entry). As indicated in the Firebase documentation (https://www.firebase.com/docs/android/guide/structuring-data.html), I\'m using indexes to keep the data structure flat. This leads to a situation in which I need to bind these indexes to my ViewHolder.

Why I cant use the populateViewHolder override method?

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问题 I\'m try to retrieve datafrom database in my fragment onViewCreated method I have used FirebaseRecylerAdapter like below @Override public void onViewCreated(View view, @Nullable Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); FirebaseRecyclerAdapter<AllUsers, AllUsersViewHolder> firebaseRecyclerAdapter; } public static class AllUsersViewHolder extends RecyclerView.ViewHolder { View view; public AllUsersViewHolder(View itemView) { super(itemView); view = itemView; }