Develop Reference

How to integrate dialogflow in android apps

I want to integrate my chatbot(created by dialogflow) to my apps and I have create the xml files but I didn't find a way how to match between them.
I have already database using room library persistance .And, I'm coding with Java.
How can I itegrate my agent into my apps?And how to add a recylerViewAdapter for my chatmessages.
Thank you
msg_list.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/leftText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:layout_alignParentStart="true"
android:text="Hello this is me!!"
android:padding="8dp"
android:textColor="#212121"
android:background="#drawable/left_background"
android:elevation="2dp"
android:layout_alignParentLeft="true" />
<TextView
android:id="#+id/rightText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:layout_alignParentEnd="true"
android:text="Hi!! How are you!!"
android:background="#drawable/right_background"
android:textColor="#fff"
android:padding="8dp"
android:elevation="2dp"
android:layout_alignParentRight="true" />
</RelativeLayout>
Chatbot.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Chatbot">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="10dp"
android:paddingBottom="50dp"
android:clipToPadding="false"
android:background="#f4f6f7"
tools:listitem="#layout/msglist"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="10dp"
android:layout_marginEnd="5dp"
android:layout_marginBottom="10dp"
android:elevation="2dp"
android:layout_toStartOf="#+id/addBtn"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_marginRight="5dp"
android:layout_toLeftOf="#+id/addBtn">
<EditText
android:id="#+id/message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginEnd="20dp"
android:background="#fff"
android:hint="Type a Message"
android:minHeight="50dp"
android:textSize="18sp" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/addBtn"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentEnd="true"
android:background="#drawable/back_fab"
android:layout_marginBottom="10dp"
android:layout_marginEnd="5dp"
android:elevation="4dp"
android:layout_centerInParent="true"
android:layout_alignParentRight="true"
android:layout_marginRight="5dp">
<ImageView
android:id="#+id/fab_img"
android:layout_width="25dp"
android:layout_height="25dp"
android:layout_centerInParent="true"
android:src="#drawable/ic_send_white_24dp"
android:tint="#fff"/>
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
ChatbotActivity
public class Chatbot extends AppCompatActivity implements AIListener {
RecyclerView recyclerView;
EditText message;
RelativeLayout addBtn;
ChatbotAdapter adapter;
Boolean flagFab = true;
private AIService aiService;
private AIServiceContext customAIServiceContext;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chatbot);
recyclerView = (RecyclerView)findViewById(R.id.recyclerView);
message = (EditText)findViewById(R.id.message);
addBtn = (RelativeLayout)findViewById(R.id.addBtn);
recyclerView.setHasFixedSize(true);
final LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
linearLayoutManager.setStackFromEnd(true);
recyclerView.setLayoutManager(linearLayoutManager);
addBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String msg = message.getText().toString().trim();
if (!message.equals("")) {
ChatMessage chatMessage = new ChatMessage(msg, "user");
}
message.setText("");
}
});
adapter = new ChatbotAdapter();
recyclerView.setAdapter(adapter);
final AIConfiguration config = new AIConfiguration("Acces",
AIConfiguration.SupportedLanguages.French,
AIConfiguration.RecognitionEngine.System);
aiService = AIService.getService(this, config);
customAIServiceContext = AIServiceContextBuilder.buildFromSessionId("ID");
aiService.setListener(this);
final AIDataService aiDataService = new AIDataService(config);
final AIRequest aiRequest = new AIRequest();
addBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String msg = message.getText().toString().trim();
if (!msg.equals("")) {
aiRequest.setQuery(msg);
new AsyncTask<AIRequest,Void, AIResponse>(){
#Override
protected AIResponse doInBackground(AIRequest... aiRequests) {
final AIRequest request = aiRequests[0];
try {
final AIResponse response =
aiDataService.request(aiRequest);
return response;
} catch (AIServiceException e) {
}
return null;
}
#Override
protected void onPostExecute(AIResponse response) {
if (response != null) {
Result result = response.getResult();
String reply = result.getFulfillment().getSpeech();
}
}
}.execute(aiRequest);
}
else {
aiService.startListening();
}
message.setText("");
}
});
}
#Override
public void onResult(AIResponse response) {
}
#Override
public void onError(AIError error) {
}
#Override
public void onAudioLevel(float level) {
}
#Override
public void onListeningStarted() {
}
#Override
public void onListeningCanceled() {
}
#Override
public void onListeningFinished() {
}
}
Chatmessage
public class ChatMessage {
private String msgText;
private String msgUser;
public ChatMessage(String msgText, String msgUser){
this.msgText = msgText;
this.msgUser = msgUser;
}
public ChatMessage(){
}
//+getter & setter
}
ChatbotAdapter
//I don't know how to code this class
public class ChatbotAdapter extends RecyclerView.Adapter<ChatbotAdapter.ChatHolder>
{
#NonNull
#Override
public ChatHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View itemView = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.msglist, viewGroup, false);
return new ChatHolder(itemView);
}
#Override
public void onBindViewHolder(#NonNull ChatHolder chatHolder, int i) {
}
#Override
public int getItemCount() {
return 0;
}
public class ChatHolder extends RecyclerView.ViewHolder {
TextView leftText, rightText;
public ChatHolder(View itemView) {
super(itemView);
leftText = (TextView) itemView.findViewById(R.id.leftText);
rightText = (TextView) itemView.findViewById(R.id.rightText);
}
}
}

Your question is not that clear. Please add some more details like what is you want, what you have implemented and what issue is coming.
You may also try my implementation. I am not using Recycler view in my implementation, but you could follow the following article I wrote for integrating Dialogflow with Android. Try an follow the V2 version as V1 will phase out by October this year.
Also, Do not use fragment for Chatbot as it somehow does not work. Try and make a simple chatbot using my implementation and then you can work towards your own implementation.
Hope it works.

RecyclerView does not show list of objects

I tried the solutions on the other similar posts that I found here but they did not help me. I hope someone can help.
I get data from Unsplash's API and the ArrayList contains 10 items once I get a response, that's why I think It has to be something with the way the view is inflated.
This is code:
public class MainActivity extends AppCompatActivity {
private static final String TAG = "unsplash";
private final String CLIENT_ID = "...myclientID...";
// testing keyword used on the API to search for pictures
private final String KEYWORD = "stackOverflow";
private final String urlBase = "https://api.unsplash.com/";
private Retrofit retrofit;
private RecyclerView recyclerView;
private RecyclerViewAdapter recyclerViewAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
retrofit = new Retrofit.Builder()
.baseUrl(urlBase)
.addConverterFactory(GsonConverterFactory.create())
.build();
recyclerView = findViewById(R.id.recyclerview);
recyclerView.setHasFixedSize(true);
GridLayoutManager layoutManager = new GridLayoutManager(this, 2);
recyclerView.setLayoutManager(layoutManager);
recyclerViewAdapter = new RecyclerViewAdapter();
recyclerView.setAdapter(recyclerViewAdapter);
getData();
}
private void getData() {
PictureService service = retrofit.create(PictureService.class);
Call<PictureResponse> pictureResponseCall = service.getPictureList(KEYWORD, CLIENT_ID);
pictureResponseCall.enqueue(new Callback<PictureResponse>() {
#Override
public void onResponse(Call<PictureResponse> call, Response<PictureResponse> response) {
if (response.isSuccessful()){
PictureResponse pictureResponse = response.body();
ArrayList<UnsplashPic> pictureList = pictureResponse.getResults();
recyclerViewAdapter.addPictures(pictureList);
}else{
Log.e (TAG, " onResponse " + response.errorBody());
}
}
#Override
public void onFailure(Call<PictureResponse> call, Throwable t) {
Log.e (TAG, " onFailure " + t.getMessage());
}
});
}
}
My adapter class:
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
private ArrayList<UnsplashPic> pictureList;
public RecyclerViewAdapter (){
pictureList = new ArrayList<>();
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext())
.inflate(R.layout.item_view_holder, viewGroup, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull ViewHolder viewHolder, int i) {
UnsplashPic pic = pictureList.get(i);
viewHolder.artistName.setText(pic.user.getUsername());
viewHolder.unsplash.setText("Unsplash");
}
#Override
public int getItemCount() {
return pictureList.size();
}
public void addPictures(ArrayList<UnsplashPic> pictureList) {
pictureList.addAll(pictureList);
notifyDataSetChanged();
}
public class ViewHolder extends RecyclerView.ViewHolder {
private ImageView imageView;
private TextView artistName;
private TextView unsplash;
public ViewHolder (View itemView){
super(itemView);
imageView = itemView.findViewById(R.id.imageview);
artistName = itemView.findViewById(R.id.artist_name);
unsplash = itemView.findViewById(R.id.unsplash_name);
}
}
}
item_view_holder.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/imageview"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_gravity="center"
android:background="#ababab"
android:contentDescription="unsplash picture" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:layout_gravity="center">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Photo by "/>
<TextView
android:id="#+id/artist_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="on "/>
<TextView
android:id="#+id/unsplash_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:clickable="true"
android:focusable="true" />
</LinearLayout>
activity_main.xml
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:hint="Search for pictures"/>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Search"/>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/recyclerview">
</android.support.v7.widget.RecyclerView>
</LinearLayout>

Here:
public void addPictures(ArrayList<UnsplashPic> pictureList) {
pictureList.addAll(pictureList);
notifyDataSetChanged();
}
you are actually adding the content of the pictureList you send as parameter of the function to that same list, your list from adapter is not updated.
You should do like this instead:
public void addPictures(ArrayList<UnsplashPic> pictureList) {
this.pictureList.addAll(pictureList);
notifyDataSetChanged();
}

Unable to populate RecyclerView adapter with Firebase data

I'm trying to fetch the data from my Firebase database but from some reason it doesn't work, so I'll try to provide as much info as posible ..
This is the database snapshot:
This is a POJO class:
public class Result2 implements Serializable {
private int score;
private String userName;
public Result2(int score, String userName) {
this.score = score;
this.userName = userName;
}
public int getScore() {
return score;
}
public String getUserName() {
return userName;
}
}
This is my activitys layout called activity_results.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:weightSum="2"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="50dp">
<TextView
android:textColor="#000"
android:textSize="16sp"
android:gravity="center"
android:text="USERNAME"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />
<TextView
android:textColor="#000"
android:textSize="16sp"
android:text="SCORE"
android:gravity="center"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="match_parent" />
</LinearLayout>
<View
android:background="#000"
android:layout_width="match_parent"
android:layout_height="1dp"
/>
<android.support.v7.widget.RecyclerView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingTop="10dp"
android:clipToPadding="false"
android:scrollbars="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
As you can see, I want to have 2 TextViews that will act like tabs and a RecyclerView underneath that will show the data
Here is my Adapters ViewHolder layout called score_view_holder.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="50dp"
android:orientation="horizontal"
android:weightSum="2">
<TextView
android:id="#+id/username"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
<TextView
android:id="#+id/score"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:textSize="14sp" />
</LinearLayout>
<View
android:background="#4545"
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginEnd="10dp"
android:layout_marginStart="10dp"/>
So it will contain two horizontal TextViews and a View as a line below..
Here is my Adapter:
public class ScoreAdapter extends RecyclerView.Adapter<ScoreAdapter.ScoreViewHolder> {
private List<Result2> results = new ArrayList<>();
public void setResults(List<Result2> results) {
this.results.clear();
this.results.addAll(results);
notifyDataSetChanged();
}
#Override
public ScoreAdapter.ScoreViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.score_view_holder, parent, false);
return new ScoreAdapter.ScoreViewHolder(view);
}
#Override
public void onBindViewHolder(ScoreAdapter.ScoreViewHolder holder, int position) {
Result2 result = getResult(position);
if (result != null) {
holder.setUsername(result.getUserName() != null ? result.getUserName() : "-");
holder.setScore(String.valueOf(result.getScore()));
}
}
private Result2 getResult(int position) {
return !results.isEmpty() ? results.get(position) : null;
}
#Override
public int getItemCount() {
return results.size();
}
public class ScoreViewHolder extends RecyclerView.ViewHolder {
private TextView username;
private TextView score;
public ScoreViewHolder(View itemView) {
super(itemView);
username = itemView.findViewById(R.id.username);
score = itemView.findViewById(R.id.score);
}
public void setUsername(String username) {
this.username.setText(username);
}
public void setScore(String score) {
this.score.setText(score);
}
}
}
It should get List of Result2 objects and just set text in those two TextViews (username and score)
And finally my Activity where all the magic doesn't happen :)
public class Results extends AppCompatActivity {
private DatabaseReference mDatabase;
private ScoreAdapter scoreAdapter;
private RecyclerView recyclerView;
private List<Result2> results = new ArrayList<>();
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_results);
recyclerView = findViewById(R.id.recycler_view);
scoreAdapter = new ScoreAdapter();
recyclerView.setLayoutManager(new LinearLayoutManager(this));
recyclerView.setAdapter(scoreAdapter);
mDatabase = FirebaseDatabase.getInstance().getReference();
loadResults();
}
private void loadResults() {
mDatabase.child("Users").addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot dataSnapshot) {
for (DataSnapshot childSnapshot : dataSnapshot.getChildren()) {
Result2 result = childSnapshot.getValue(Result2.class);
if(result != null) {
results.add(result);
}
}
Toast.makeText(Results.this, String.valueOf(results.size()), Toast.LENGTH_SHORT).show();
scoreAdapter.setResults(results);
}
#Override
public void onCancelled(#NonNull DatabaseError databaseError) {
}
}
);
}
}
Funniest thing, Toast shows correct number of Results, but when scoreAdapter.setResults(results); is called, screen blinks and goes back to first screen... Does it have something to do with a POJO class, or onDataChange method or main thread?
I tried with debugging and also funny thing here.. This is what is caught on breakpoint inside ScoreAdapter setResult method:
I tried setting breakpoints inside onBindViewHolder and getResults() but none of them gets called :o

if(result != null) {
results.add(result);
}
See here you are checking result != null. But result is a reference variable of type Results. So it will not be null, it will contains some value.
So, try removing that if statement and do only -
results.add(result);

Recycler View with firebase just displaying the first instance

Hi I ma trying to build an app that has a list of events retrieved from a firebase database but when I run it it displays just the first event stored.
there is the code I used to generate the list:
private RecyclerView recyclerView;
private FirebaseRecyclerAdapter<Event,EventViewHolder> firebaseRecyclerAdapter;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_calendario);
recyclerView = (RecyclerView) findViewById(R.id.eventiList);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
Query query = FirebaseDatabase.getInstance().getReference("Eventi");
FirebaseRecyclerOptions<Event> options =
new FirebaseRecyclerOptions.Builder<Event>().setQuery(query, Event.class).build();
firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<Event, EventViewHolder>(options) {
#NonNull
#Override
public EventViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.event_layout, parent, false);
return new EventViewHolder(view);
}
#Override
protected void onBindViewHolder(#NonNull EventViewHolder holder, final int position, #NonNull Event model) {
holder.setDay(model.getData().substring(0,2));
holder.setMonth(model.getMese());
holder.setName(model.getNome());
holder.setLuogo(model.getLuogo());
holder.setendStart(model.getOra_inizio()+ " - "+ model.getOra_fine());
holder.mview.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
}
});
}
};
recyclerView.setAdapter(firebaseRecyclerAdapter);
}
public static class EventViewHolder extends RecyclerView.ViewHolder
{
View mview;
public EventViewHolder(View itemView)
{
super(itemView);
mview=itemView;
}
public void setDay(String day)
{
TextView mtext= (TextView)mview.findViewById(R.id.day);
mtext.setText(day);
}
public void setName(String name)
{
TextView maut=(TextView)mview.findViewById(R.id.Event_Name);
maut.setText(name);
}
public void setMonth(String month)
{
TextView maut=(TextView)mview.findViewById(R.id.month);
maut.setText(month);
}
public void setLuogo(String luogo)
{
TextView maut=(TextView)mview.findViewById(R.id.luogo);
maut.setText(luogo);
}
public void setendStart(String endStart)
{
TextView maut=(TextView)mview.findViewById(R.id.start_end);
maut.setText(endStart);
}
}
#Override
protected void onStart() {
super.onStart();
firebaseRecyclerAdapter.startListening();
}
#Override
protected void onStop() {
super.onStop();
//mAdapter.stopListening();
firebaseRecyclerAdapter.stopListening();
}
this is the code of the model class
public class Event {
private String Nome;
private String data;
private String descrizione;
private String luogo;
private String mese;
private String ora_fine;
private String ora_inizio;
private String type;
public Event()
{
}
public Event(String nome, String data, String descrizione, String luogo, String mese, String ora_fine, String ora_inizio, String type) {
Nome = nome;
this.data = data;
this.descrizione = descrizione;
this.luogo = luogo;
this.mese = mese;
this.ora_fine = ora_fine;
this.ora_inizio = ora_inizio;
this.type = type;
}
public String getNome() {
return Nome;
}
public String getData() {
return data;
}
public String getDescrizione() {
return descrizione;
}
public String getLuogo() {
return luogo;
}
public String getMese() {
return mese;
}
public String getOra_fine() {
return ora_fine;
}
public String getOra_inizio() {
return ora_inizio;
}
public String getType() {
return type;
}
}
this is the Calendar activity layout
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Calendario"
android:id="#+id/Calendar_draw">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/eventiList"></android.support.v7.widget.RecyclerView>
</android.support.v4.widget.DrawerLayout>
This is the code for the recycler view row
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="119dp"
android:background="#color/darkBlue">
<TextView
android:id="#+id/day"
android:layout_width="86dp"
android:layout_height="66dp"
android:layout_alignParentStart="true"
android:layout_alignTop="#+id/Event_Name"
android:layout_marginStart="18dp"
android:textColor="#color/white"
android:textSize="50dp"
android:layout_alignParentLeft="true"
android:layout_marginLeft="18dp" />
<TextView
android:id="#+id/month"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignStart="#+id/day"
android:layout_marginBottom="11dp"
android:textColor="#color/white"
android:textStyle="bold"
android:layout_alignLeft="#+id/day" />
<TextView
android:id="#+id/Event_Name"
android:layout_width="wrap_content"
android:layout_height="30dp"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginStart="124dp"
android:layout_marginTop="13dp"
android:textAppearance="#style/TextAppearance.AppCompat.Large"
android:textColor="#color/white"
android:textStyle="bold"
android:layout_alignParentLeft="true"
android:layout_marginLeft="124dp" />
<TextView
android:id="#+id/start_end"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:layout_marginStart="135dp"
android:textAppearance="#style/TextAppearance.AppCompat.Small"
android:textColor="#color/white"
android:textStyle="italic" />
<TextView
android:id="#+id/luogo"
android:layout_width="wrap_content"
android:layout_height="20dp"
android:layout_alignStart="#+id/start_end"
android:layout_below="#+id/day"
android:textAppearance="#style/TextAppearance.AppCompat.Small"
android:textColor="#color/white"
android:textStyle="italic" />
</RelativeLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
As you can see from the image that follows it displays just one event and I have 5 in the database
Display
The code worked fine for other lists that are in the app I don't understand why it is not working for this one hope I can get an answer here, thanks
Edit: this is the Database tree
Database Tree

Problem Solved, the layout_height parameter was set to match_parent in the event_layout LinearLayout and CardView. I set it to wrap_content on both and it worked.

Firebase RecyclerView expandable view not working (Do not wish to use any 3rd Party Library)

I have used a FirebaseRecyclerAdapter in my application for displaying a series of events. When i select an event form the recycler view it must expand the recycler view item and show me the details and other items of that event such as dates, description and others. I used a concept from Google I/O 2016 but could't land anywhere as my event is not showing only. I want only a specific set of items to be displayed when expanded.
EventView.java
public class EventView extends AppCompatActivity {
DatabaseReference databaseReference;
RecyclerView recyclerView;
int mExpandedPosition = -1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_event_view);
databaseReference = FirebaseDatabase.getInstance().getReference().child("ApprovedEvents");
recyclerView = (RecyclerView) findViewById(R.id.request_EventList);
//Avoid unnecessary layout passes by setting setHasFixedSize to true
recyclerView.setHasFixedSize(true);
//Select the type of layout manager you would use for your recyclerView
recyclerView.setLayoutManager(new LinearLayoutManager(this));
}
#Override
protected void onStart() {
super.onStart();
final String event_cat = getIntent().getStringExtra("Category");
FirebaseRecyclerAdapter<Event, RequestViewHolder> firebaseRecyclerAdapter = new FirebaseRecyclerAdapter<Event, RequestViewHolder>(
Event.class,
R.layout.events_list_row,
RequestViewHolder.class,
databaseReference.orderByChild("category").equalTo(event_cat)
) {
#Override
protected void populateViewHolder(RequestViewHolder viewHolder, Event model, int position) {
viewHolder.setTitle(model.getTitle());
viewHolder.setDesc(model.getDesc());
viewHolder.setCategory(model.getCategory());
viewHolder.setLocation(model.getLocation());
viewHolder.setPrice(model.getPrice());
viewHolder.setImageUrl(getApplicationContext(), model.getImageUrl());
viewHolder.imageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(EventView.this, "Image Selected", Toast.LENGTH_SHORT).show();
}
});
}
#Override
public void onBindViewHolder(RequestViewHolder viewHolder, final int position) {
super.onBindViewHolder(viewHolder, position);
final boolean isExpanded = position == mExpandedPosition;
viewHolder.mView.setVisibility(isExpanded?View.VISIBLE:View.GONE);
viewHolder.mView.setActivated(isExpanded);
viewHolder.mView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mExpandedPosition = isExpanded ? -1:position;
TransitionManager.beginDelayedTransition(recyclerView);
notifyDataSetChanged();
}
});
}
};
recyclerView.setAdapter(firebaseRecyclerAdapter);
}
public static class RequestViewHolder extends RecyclerView.ViewHolder {
View mView;
ImageView imageButton;
public RequestViewHolder(View itemView) {
super(itemView);
mView = itemView;
imageButton = (ImageView) mView.findViewById(R.id.request_image);
}
public void setTitle(String title) {
TextView a_title = (TextView) mView.findViewById(R.id.request_title);
a_title.setText(title);
}
public void setDesc(String desc) {
TextView a_desc = (TextView) mView.findViewById(R.id.request_desc);
a_desc.setText(desc);
}
public void setLocation(String location) {
TextView a_desc = (TextView) mView.findViewById(R.id.request_location);
a_desc.setText(location);
}
public void setCategory(String category) {
TextView a_category = (TextView) mView.findViewById(R.id.request_category);
a_category.setText(category);
}
public void setPrice(String price) {
TextView a_price = (TextView) mView.findViewById(R.id.request_price);
a_price.setText(price);
}
public void setImageUrl(Context ctx, String imageUrl) {
ImageView a_image = (ImageView) mView.findViewById(R.id.request_image);
Picasso.with(ctx).load(imageUrl).into(a_image);
}
}
}
events_list_row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:weightSum="1"
xmlns:card_view="http://schemas.android.com/apk/res-auto">
<android.support.v7.widget.CardView
android:id="#+id/card_view"
android:layout_gravity="center"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
card_view:cardCornerRadius="4dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/request_category"
android:textStyle="bold"
android:textSize="15dp"
android:padding="5dp"
android:layout_gravity="left"
android:text="Category will come here"/>
<TextView
android:layout_width="191dp"
android:layout_height="wrap_content"
android:id="#+id/request_location"
android:textSize="15dp"
android:gravity="right"
android:layout_gravity="right"
android:text="Location will come here"
android:padding="5dp"
android:textStyle="bold"/>
</LinearLayout>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/request_title"
android:layout_marginTop="300dp"
android:text="Title will come here "
android:padding="10dp"
android:textStyle="bold"
android:textSize="15dp" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/request_desc"
android:text="Desc will come here "
android:layout_marginTop="250dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingBottom="10dp" />
<ImageView
android:layout_width="match_parent"
android:layout_height="275dp"
android:id="#+id/request_image"
android:src="#drawable/abc_btn_check_material"
android:adjustViewBounds="true"
android:clickable="true"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Price will come here"
android:id="#+id/request_price"
android:layout_marginTop="270dp"
android:paddingBottom="5dp"
android:paddingLeft="5dp"/>
</android.support.v7.widget.CardView>
</LinearLayout>
activity_event_view.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="com.example.admin.college20.EventView">
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/request_EventList"
android:clickable="true"/>
</RelativeLayout>