Develop Reference

RecyclerView displays only one item

Am trying to build my first app and my recyclerView only displays the first item from the json.I have tried changing the layout height to wrap_content but its still not working
Here is the xml layout for the recyclerview activity
<?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="wrap_content"
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.aleky.carrental.cars">
<RelativeLayout
android:id="#+id/relativeLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
>
<android.support.v7.widget.RecyclerView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/rv"
android:clickable="false"
/>
</RelativeLayout>
</RelativeLayout>
the cardview xml layout
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:cardview="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
cardview:cardCornerRadius="2dp"
cardview:cardElevation="3dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#fff"
android:paddingBottom="15dp">
<TextView
android:id="#+id/car_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="2dp"
android:layout_marginTop="2dp"
android:fontFamily="sans-serif-smallcaps"
android:text="Car Name"
android:textColor="#996515"
android:textSize="24sp"
android:textStyle="bold" />
<com.android.volley.toolbox.NetworkImageView
android:id="#+id/Car_image"
android:layout_width="150dp"
android:layout_height="150dp"
android:layout_below="#+id/car_name"
android:layout_marginBottom="2dp"
android:layout_marginLeft="5dp"
android:layout_marginTop="2dp" />
<TextView
android:id="#+id/tvfeature"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="90dp"
android:layout_marginTop="25dp"
android:layout_toRightOf="#+id/car_name"
android:text="Features"
android:textColor="#000"
android:textSize="22sp" />
<View
android:layout_width="100dp"
android:layout_height="1dp"
android:layout_below="#+id/tvfeature"
android:layout_marginLeft="20dp"
android:layout_toRightOf="#+id/Car_image"
android:background="#000" />
<ImageView
android:id="#+id/ac"
android:layout_width="40dp"
android:layout_height="20dp"
android:layout_below="#+id/tvfeature"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:layout_toRightOf="#+id/Car_image"
android:src="#drawable/air_conditioner" />
<TextView
android:id="#+id/feature1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/tvfeature"
android:layout_marginTop="10dp"
android:layout_toRightOf="#+id/ac"
android:text="Air conditioner"
android:textColor="#000"
android:textSize="16sp" />
<ImageView
android:id="#+id/tr"
android:layout_width="40dp"
android:layout_height="20dp"
android:layout_below="#+id/feature1"
android:layout_marginLeft="20dp"
android:layout_marginTop="10dp"
android:layout_toRightOf="#+id/Car_image"
android:src="#drawable/transmission" />
<TextView
android:id="#+id/feature2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/feature1"
android:layout_marginLeft="2dp"
android:layout_marginTop="10dp"
android:layout_toRightOf="#+id/tr"
android:text="Manual"
android:textColor="#333333"
android:textSize="16sp" />
<ImageView
android:id="#+id/pass"
android:layout_width="40dp"
android:layout_height="20dp"
android:layout_below="#+id/tr"
android:layout_marginLeft="20dp"
android:layout_marginTop="5dp"
android:layout_toRightOf="#+id/Car_image"
android:src="#drawable/passengers" />
<TextView
android:id="#+id/feature3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/feature2"
android:layout_marginLeft="5dp"
android:layout_marginTop="5dp"
android:layout_toRightOf="#id/pass"
android:text="6 Passengers"
android:textColor="#333333"
android:textSize="16sp" />
<TextView
android:id="#+id/pricetxt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/Car_image"
android:text="Price :"
android:textColor="#333333"
android:textSize="22sp"
android:textStyle="bold" />
<TextView
android:id="#+id/car_price"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/Car_image"
android:layout_marginLeft="2dp"
android:layout_toRightOf="#+id/pricetxt"
android:text="KSH.2000"
android:textColor="#996515"
android:textSize="22sp" />
<TextView
android:id="#+id/organiser"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/pricetxt"
android:layout_marginTop="5dp"
android:text="Owner :"
android:textColor="#333333"
android:textSize="14sp" />
<TextView
android:id="#+id/crAgent"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#+id/pricetxt"
android:layout_marginLeft="2dp"
android:layout_marginTop="5dp"
android:layout_toEndOf="#+id/organiser"
android:layout_toRightOf="#+id/organiser"
android:text="Supercars Rentals"
android:textColor="#05056c"
android:textSize="14sp" />
<Button
android:id="#+id/btn_rent"
style="#style/AppTheme.ButtonCorners"
android:layout_width="150dp"
android:layout_height="40dp"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_below="#+id/Car_image"
android:layout_marginRight="12dp"
android:clickable="true"
android:text="Rent"
android:textColor="#eef525" />
<TextView
android:id="#+id/car_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="invisible" />
</RelativeLayout>
</android.support.v7.widget.CardView>
The cars.java class to load items into the recyclerview
public class cars extends AppCompatActivity {
String url = "http://192.168.43.201/Car_rental/retrievecars.php";
Context context = null;
ProgressDialog dialog;
private List<CarsItem> array_cars = new ArrayList<>();
AdapterClass adapter;
NetworkImageView carsImageview;
private String user_Location = "cLocation";
private String Category = "category";
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cars);
adapter = new AdapterClass(cars.this, array_cars);
RecyclerView recycler = (RecyclerView) findViewById(R.id.rv);
recycler.setHasFixedSize(true);
LinearLayoutManager layoutManager = new LinearLayoutManager(this);
layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recycler.setLayoutManager(layoutManager);
recycler.setItemAnimator(new DefaultItemAnimator());
recycler.setAdapter(adapter);
setCars();
recycler.addOnItemTouchListener(new RecyclerTouchListener(this, recycler, new ClickListener() {
#Override
public void onClick(View view, int position) {
}
#Override
public void onLongClick(View view, int position) {
}
}));
}
public void setCars() {
dialog = new ProgressDialog(this);
dialog.setMessage("Loading cars...");
dialog.show();
if (array_cars != null) {
array_cars.clear();
}
StringRequest request = new StringRequest(Request.Method.POST, url,
new Response.Listener<String>() {
#Override
public void onResponse(String s) {
try {
hideDialog();
Log.d("Sever Message", s);
JSONObject cars = new JSONObject(s);
JSONArray jsonArray = cars.getJSONArray("Cars");
JSONObject jobject = null;
int len = jsonArray.length();
for (int i = 0; i < len; i++) {
jobject = jsonArray.getJSONObject(i);
CarsItem carsdata = new CarsItem();
carsdata.setId(jobject.getString("0"));
carsdata.setCarname(jobject.getString("1"));
carsdata.setImages(jobject.getString("car_image"));
carsdata.setfeature1(jobject.getString("5"));
carsdata.setfeature2(jobject.getString("6"));
carsdata.setfeature3(jobject.getString("7"));
carsdata.setPrice(jobject.getString("8"));
array_cars.add(carsdata);
}
adapter.notifyDataSetChanged();
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError volleyError) {
}
}) {
#Override
protected Map<String, String> getParams() throws AuthFailureError {
//Getting Image Location & category
String Location = "";
String Ccategory = "cars";
//Creating parameters
Map<String, String> params = new Hashtable<String, String>();
//Adding parameters
params.put(Category, Ccategory);
params.put(user_Location, Location);
//returning parameters
return params;
}
};
//RequestQueue requestQueue = Volley.newRequestQueue(this);
//Adding our request to the queue
// requestQueue.add(request);
AppController.getmInstance().addToRequestQueue(request);
}
public void hideDialog() {
if (dialog != null) {
dialog.dismiss();
dialog = null;
}
}
public interface ClickListener {
void onClick(View view, int position);
void onLongClick(View view, int position);
}
public static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
GestureDetector gestureDetector;
cars.ClickListener clickListener;
public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final cars.ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildPosition(child));
}
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView recycler, MotionEvent e) {
View child = recycler.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child, recycler.getChildPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView recycler, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
}
}
and finally my adapter class
public class AdapterClass extends RecyclerView.Adapter<AdapterClass.CustomViewHolder> {
private List<CarsItem> Array_cars;
private ImageLoader imageLoader;
private Context mContext;
public AdapterClass(Context context, List<CarsItem> array_cars) {
this.Array_cars = array_cars;
this.mContext = context;
}
#Override
public CustomViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.cars_design, null);
return new CustomViewHolder(view);
}
#Override
public void onBindViewHolder(CustomViewHolder holder,final int i) {
final CarsItem carsItem = Array_cars.get(i);
holder.imageUrl = carsItem.getImages();
imageLoader = AppController.getmInstance().getmImageLoader();
holder.Carname.setText(carsItem.getCarname());
holder.feature1.setText(carsItem.getfeature1());
holder.feature2.setText(carsItem.getfeature2());
holder.feature3.setText(carsItem.getfeature3());
holder.price.setText(carsItem.getPrice());
holder.agent.setText(carsItem.getcarowner());
holder.carid.setText(carsItem.getId());
holder.carimage.setImageUrl("http://192.168.43.201/Car_rental/cars/"+carsItem.getImages(), imageLoader);
holder.rent.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(mContext, HireCar.class);
intent.putExtra("carname",carsItem.getCarname());
intent.putExtra("car_rate",carsItem.getPrice());
intent.putExtra("car_image", carsItem.getImages());
intent.putExtra("car_id", carsItem.getId());
intent.putExtra("c_owner", carsItem.getcarowner());
mContext.startActivity(intent);
}
});
}
#Override
public int getItemCount() {
return (null != Array_cars ? Array_cars.size() : 0);
}
class CustomViewHolder extends RecyclerView.ViewHolder {
String imageUrl;
TextView Carname, feature1, feature2, feature3, price,agent,carid;
NetworkImageView carimage;
Button rent;
public CustomViewHolder(View view) {
super(view);
this.Carname = (TextView) view.findViewById(R.id.car_name);
this.feature1 = (TextView) view.findViewById(R.id.feature1);
this.feature3 = (TextView) view.findViewById(R.id.feature3);
this.price = (TextView) view.findViewById(R.id.car_price);
this.feature2=(TextView) view.findViewById(R.id.feature2);
this.carimage = (NetworkImageView) view.findViewById(R.id.Car_image);
this.rent=(Button)view.findViewById(R.id.btn_rent);
this.agent=(TextView)view.findViewById(R.id.crAgent);
this.carid=(TextView)view.findViewById(R.id.car_id);
}
}
}

I think the problem is that you are not adding the elements to the adapter. You need to have a method in the adapter to add items after the adapter has been created. Inside that method you need to notify. Example:
void addItems(List<CarItem> carItems){
Array_cars.addAll(carItems);
notifyDataSetChanged();
}
However, I would go a bit far and find the number of items and try to notify only for the newly inserted ones(in case there is something already).
This can be done like this:
void addItems(List<CarItem> carItems){
int position = Array_cars.size();
Array_cars.addAll(carItems);
notifyItemRangeChanged(position, Array_cars.size() - position);
}
EDIT
Look at this example below:
RecycleView

Here is the xml layout for the recyclerview activity
<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.aleky.carrental.cars">
<RelativeLayout
android:id="#+id/relativeLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/rv"
android:clickable="false"
/>
</RelativeLayout>
</RelativeLayout>

You have added match_parent height of "RecyclerView" please change to wrap_content.
<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.aleky.carrental.cars">
<RelativeLayout
android:id="#+id/relativeLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/rv"
android:clickable="false"
/>
</RelativeLayout>
</RelativeLayout>

Why does my RecyclerView contain only 1 item?

I am creating a weather forecast aplication. For this I want to use RecyclerView to show items. The problem is that my RecyclerView is showing only one item instead of all. I am using the OpenWeatherMap API forecast.
This is my layout:
<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:layout_gravity="center"
android:background="#drawable/weather_background2"
android:orientation="vertical"
android:padding="5dp">
<TextView
android:id="#+id/txt_close_weather"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="end"
android:layout_marginRight="2dp"
android:layout_marginTop="2dp"
android:background="#drawable/circle"
android:gravity="center"
android:text="X"
android:textColor="#color/blackTransparent"
android:textStyle="bold" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="8"
android:orientation="vertical">
<TextView
android:id="#+id/city_country_weather"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="0dp"
android:text="KOTA"
android:textColor="#color/blackTransparent"
android:textSize="24dp"
android:textStyle="bold" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="2dp"
android:text="Today"
android:textColor="#color/blackTransparent"
android:textSize="16dp" />
<TextView
android:id="#+id/current_date_weather"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="4dp"
android:textColor="#color/blackTransparent"
android:textSize="16dp" />
<ImageView
android:id="#+id/weather_icon"
android:layout_width="160dp"
android:layout_height="160dp"
android:layout_gravity="center|center_horizontal"
android:layout_marginTop="8dp"
android:contentDescription="#string/app_name"
android:src="#drawable/img_02d" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="2dp"
android:gravity="center_horizontal"
android:orientation="horizontal"
android:weightSum="3">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:gravity="center"
android:orientation="vertical">
<TextView
android:id="#+id/tv_description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hummidity"
android:textColor="#color/blackTransparent"
android:textSize="14dp"
android:textStyle="bold" />
<TextView
android:id="#+id/wind_result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="4dp"
android:text="#string/app_name"
android:textColor="#color/blackTransparent"
android:textSize="14dp" />
<TextView
android:id="#+id/temperature_result"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="4dp"
android:text="#string/app_name"
android:textColor="#color/blackTransparent"
android:textSize="16dp" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
<LinearLayout
android:gravity="center_horizontal"
android:background="#color/whiteTr"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="2.5"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/weather_daily_list"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:orientation="horizontal"
android:scrollbars="none" />
</LinearLayout>
</LinearLayout>
This my code in activity :
public class DialogWeather extends android.app.DialogFragment {
public static final int WIDTH = 60;
public static final int HEIGHT = 80;
public static final String DATE_FORMAT_WITHOUT_TIME = "dd/MM";
private static final String ICON_PREFIX = "img_";
private static final String API_KEY = "2fc56d498a3b4d87ba298c232e65e6b0";
private static final String UNITS = "metric";
final String q = "Jakarta";
PopupWindow myPopupWindow;
Dialog myDialog;
DialogWeather dialogWeather;
private TextView txtCloseWeather, txtCityCountry,
txtCurrentDate, tvDescription, tvWindResult, tvTemperatureResult;
private ImageView weatherIcon;
private RecyclerView mRecyclerViewWeather;
DialogWeatherAdapter dialogWeatherAdapter;
private ArrayList<Example2> weathers = new ArrayList<>();
Example2 example2List;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle
savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_dialog_weather,
container, false);
getDialog().getWindow().setBackgroundDrawable(new
ColorDrawable(Color.TRANSPARENT));
tvDescription = rootView.findViewById(R.id.tv_description);
tvWindResult = rootView.findViewById(R.id.wind_result);
tvTemperatureResult = rootView.findViewById(R.id.temperature_result);
weatherIcon = rootView.findViewById(R.id.weather_icon);
txtCityCountry = rootView.findViewById(R.id.city_country_weather);
txtCityCountry.setTypeface(Typeface.DEFAULT_BOLD);
txtCurrentDate = rootView.findViewById(R.id.current_date_weather);
txtCloseWeather = rootView.findViewById(R.id.txt_close_weather);
txtCloseWeather.setTypeface(Typeface.DEFAULT_BOLD);
Fragment fragment = this;
txtCloseWeather.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getActivity(), "Button Close",
Toast.LENGTH_LONG).show();
getActivity().getFragmentManager().beginTransaction()
.remove(fragment).commit();
}
});
mRecyclerViewWeather = rootView.findViewById(R.id.weather_daily_list);
LinearLayoutManager layoutManager = new
LinearLayoutManager(getApplicationContext());
layoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
mRecyclerViewWeather.setLayoutManager(layoutManager);
mRecyclerViewWeather.setHasFixedSize(true);
dialogWeatherAdapter = new DialogWeatherAdapter(weathers);
mRecyclerViewWeather.setAdapter(dialogWeatherAdapter);
loadWeathers(q, API_KEY, UNITS);
return rootView;
}
private void loadWeathers(String q, String apiKey, String units) {
ApiServicesWeather weather = InitRetrofitWeather.getServicesWeather();
Call<Example2> exampleCall = weather.getDetailWeather(q, apiKey, units);
exampleCall.enqueue(new Callback<Example2>() {
#Override
public void onResponse(Call<Example2> call, Response<Example2>
response) {
if (response.isSuccessful()) {
Toast.makeText(getApplicationContext(), "Success",
Toast.LENGTH_LONG).show();
example2List = response.body();
weathers.addAll(Collections.singleton(example2List));
loadSetView();
dialogWeatherAdapter.updateList(weathers);
dialogWeatherAdapter.notifyDataSetChanged();
}
}
#Override
public void onFailure(Call<Example2> call, Throwable t) {
Toast.makeText(getApplicationContext(), "Gagal " +
t.getMessage(), Toast.LENGTH_LONG).show();
}
});
}
private void loadSetView() {
txtCityCountry.setText(weathers.get(getId()).getCity().getName());
txtCurrentDate.setText(Util.formatDate(weathers
.get(getId()).getList().get(getId()).getDtTxt(), "EEE MMM dd, yyyy"));
weatherIcon.setImageResource(Util
.getDrawableResourceIdByName(getApplicationContext(),ICON_PREFIX + weathers
.get(getId()).getList().get(getId()).getWeather().get(getId()).getIcon()));
tvDescription.setText(weathers.get(getId()).getList().get(getId())
.getWeather().get(getId()).getDescription());
tvWindResult.setText("Wind : " +
weathers.get(getId()).getList().get(getId()).getWind().getSpeed() + " m/s");
double mTemperature = (double)
weathers.get(getId()).getList().get(getId()).getMain().getTemp();
tvTemperatureResult.setText(String.valueOf(weathers
.get(getId()).getList().get(ge
tId()).getMain().getTemp()) + " °C");
}
#Override
public void onResume() {
super.onResume();
ViewGroup.LayoutParams params = getDialog().getWindow().getAttributes();
params.width = 700;
params.height = 1100;
getDialog().getWindow().setAttributes((WindowManager.LayoutParams)
params);
}
this My Adapter :
public class DialogWeatherAdapter extends
RecyclerView.Adapter<DialogWeatherAdapter.DialogViewHolder> {
ArrayList<Example2> data;
Context context;
Activity c;
public DialogWeatherAdapter(ArrayList<Example2> data, Context context,
Activity c) {
this.data = data;
this.context = context;
this.c = c;
}
public DialogWeatherAdapter(ArrayList<Example2> weathers) {
this.data = weathers;
}
#Override
public DialogViewHolder onCreateViewHolder(ViewGroup parent, int
viewType) {
LayoutInflater layoutInflater = (LayoutInflater)
parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = layoutInflater.inflate(R.layout.item_weathers, parent,
false);
return new DialogViewHolder(view);
}
#Override
public void onBindViewHolder(DialogViewHolder holder, int position) {
if (holder instanceof DialogViewHolder) {
final DialogViewHolder viewHolder = (DialogViewHolder) holder;
if (data != null) {
for (int i = 0; i < data.size(); i++) {
viewHolder.tvCurrentDateItem.setText(Util.formatDate(data
.get(position).getList()
.get(position).getDtTxt(), "dd/MM"));
viewHolder.ivIconItem.setImageResource(Util
.getDrawableResourceIdByName(getApplicationContext(), ICON_PREFIX + data
.get(getId()).getList().get(getId()).getWeather().get(getId()).getIcon()));
viewHolder.tvDescriptionItem.setText(data.get(position)
.getList().get(position).getWeather().get(position).getDescription());
viewHolder.tvTemperatureItem.setText(String.valueOf(weathers
.get(getId()).getList
().get(getId()).getMain().getTemp()) + " °C");
}
}
}
}
#Override
public int getItemCount() {
return data.size();
}
public void updateList(ArrayList<Example2> weathers) {
this.data = weathers;
}
public class DialogViewHolder extends RecyclerView.ViewHolder {
TextView tvCurrentDateItem, tvDescriptionItem, tvTemperatureItem;
ImageView ivIconItem;
public DialogViewHolder(View itemView) {
super(itemView);
tvCurrentDateItem = itemView.findViewById(R.id.current_date_weather_item);
tvDescriptionItem = itemView.findViewById(R.id.description_item);
tvTemperatureItem = itemView.findViewById(R.id.temperature_item);
ivIconItem = itemView.findViewById(R.id.icon_weather_item);
}
}
}
enter image description here

The reason for this is -
The Item file (R.layout.item_weathers) has height match parent. Change it to wrap_content as shown -
<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="wrap_content"/>
and it will show all the items.

Expanding Listview using Recyclerview inside Scrollview

I tried below code to implement an expend and collapse content using recyclerview(listview) a link
final boolean isExpanded = position==mExpandedPosition;
holder.details.setVisibility(isExpanded?View.VISIBLE:View.GONE);
holder.itemView.setActivated(isExpanded);
if (isExpanded)
previousExpandedPosition = position;
holder.itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mExpandedPosition = isExpanded ? -1:position;
notifyItemChanged(previousExpandedPosition);
notifyItemChanged(position);
}
});
In my case when i click the particular position in recyclerview its expanding but it goes above the recyclerview.I cant see the full expanded content.i can see only partial content.In this case i need to scroll the recyclerview to view the full content.But i am searching for a solution to view the content without scroll the recyclerview. If i click another position in recyclerview that should be placed over an recyclerview.
Hear is My Code
public class CommonFragment extends Fragment {
#BindView(R.id.news_lists)
RecyclerView news_lists;
#BindView(R.id.nested_scroll)
NestedScrollView nested_scroll;
ArrayList<String> Names;
ArrayList<String> responseProducts = null;
NewsListAdaspters mAdapter;
Context mContext;
String position_name;
public CommonFragment() {
}
public static CommonFragment getInstance(String position, ArrayList<String> response) {
CommonFragment fragmentDummy = new CommonFragment();
Bundle args = new Bundle();
args.putStringArrayList("Types", response);
args.putString("position", position);
fragmentDummy.setArguments(args);
return fragmentDummy;
}
#Override
public void setArguments(Bundle args) {
super.setArguments(args);
this.responseProducts = args.getStringArrayList("Types");
this.position_name = args.getString("position");
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
View view;
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (view != null) {
ViewGroup parent = (ViewGroup) view.getParent();
if (parent != null)
parent.removeView(view);
}
try {
view = inflater.inflate(R.layout.fragment_common, container, false);
ButterKnife.bind(this, view);
} catch (InflateException ignored) {
}
mContext = getActivity();
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getActivity());
news_lists.setLayoutManager(mLayoutManager);
news_lists.setNestedScrollingEnabled(false);
Names = new ArrayList<>();
Names.clear();
for (int i = 0; i < 15; i++) {
Names.add("News Details " + i);
}
Log.e("position_name==>", "" + position_name);
getList();
return view;
}
private void getList() {
if (responseProducts.size() > 0) {
mAdapter = new NewsListAdaspters(mContext, responseProducts, position_name);
news_lists.setAdapter(mAdapter);
}
}
public class NewsListAdaspters extends RecyclerView.Adapter<NewsListAdaspters.MyViewHolder> {
private ArrayList<String> data;
private Context context;
private String name;
int mExpandedPosition = -1;
int previousExpandedPosition = -1;
NewsListAdaspters(Context context, ArrayList<String> maps, String selectedFragmentName) {
this.context = context;
this.data = maps;
this.name = selectedFragmentName;
}
#NonNull
#Override
public MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.common_view, parent, false);
final MyViewHolder holder = new MyViewHolder(itemView);
return holder;
}
#Override
public void onBindViewHolder(#NonNull final MyViewHolder holder, #SuppressLint("RecyclerView") final int position) {
holder.news_description.setText(data.get(position));
holder.news_title.setText(name);
final boolean isExpanded = position == mExpandedPosition;
Log.e("isExpanded=====>", "" + isExpanded);
holder.expend_layout.setVisibility(isExpanded ? View.VISIBLE : View.GONE);
holder.itemView.setActivated(isExpanded);
if (isExpanded)
previousExpandedPosition = position;
holder.news_image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(context, Activity_NewsFullDetails.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
}
});
holder.expand_click_layout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mExpandedPosition = isExpanded ? -1 : position;
notifyItemChanged(previousExpandedPosition);
notifyItemChanged(position);
}
});
holder.share_fb.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, "WORKING!!!!", Toast.LENGTH_SHORT).show();
}
});
holder.share_whatsapp.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, "WORKING!!!!", Toast.LENGTH_SHORT).show();
}
});
holder.share_twet.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, "WORKING!!!!", Toast.LENGTH_SHORT).show();
}
});
}
#Override
public int getItemCount() {
return data.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder {
#BindView(R.id.news_title)
public TextView news_title;
#BindView(R.id.news_hour)
public TextView news_hour;
#BindView(R.id.news_description)
public TextView news_description;
#BindView(R.id.news_image)
public ImageView news_image;
#BindView(R.id.expand_click_layout)
RelativeLayout expand_click_layout;
#BindView(R.id.expend_layout)
public LinearLayout expend_layout;
#BindView(R.id.full_title)
public TextView full_title;
#BindView(R.id.txt_description)
public TextView txt_description;
#BindView(R.id.share_twet)
public ImageView share_twet;
#BindView(R.id.share_whatsapp)
public ImageView share_whatsapp;
#BindView(R.id.share_fb)
public ImageView share_fb;
MyViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
}
}
}
}
XML file
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#03000000">
<android.support.v4.widget.NestedScrollView
android:id="#+id/nested_scroll"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
android:fitsSystemWindows="false"
android:focusable="true"
android:focusableInTouchMode="true"
android:scrollbars="none">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:descendantFocusability="blocksDescendants">
<android.support.v7.widget.RecyclerView
android:id="#+id/news_lists"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:nestedScrollingEnabled="false"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</RelativeLayout>
</android.support.v4.widget.NestedScrollView>
ITEM XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/card_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="2dp"
android:animateLayoutChanges="true"
android:background="#drawable/comment_background"
android:stateListAnimator="#animator/comment_selection"
android:elevation="3dp"
card_view:cardCornerRadius="2dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/news_image"
android:layout_width="130dp"
android:layout_height="130dp"
android:layout_margin="2dp"
android:background="#drawable/icon_card"
android:scaleType="fitXY" />
<RelativeLayout
android:id="#+id/expand_click_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignBottom="#+id/news_image"
android:layout_alignTop="#+id/news_image"
android:layout_toEndOf="#+id/news_image"
android:layout_toRightOf="#+id/news_image">
<TextView
android:id="#+id/news_description"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/bottom_layout"
android:layout_marginEnd="2dp"
android:layout_marginRight="2dp"
android:maxEms="3"
android:maxLines="4"
android:padding="4dp"
android:text=""
android:textColor="#color/black_color"
android:textSize="18sp" />
<RelativeLayout
android:id="#+id/bottom_layout"
android:layout_width="match_parent"
android:layout_height="20dp"
android:layout_alignParentBottom="true"
android:layout_margin="4dp">
<TextView
android:id="#+id/news_hour"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toLeftOf="#+id/center_text"
android:layout_toStartOf="#+id/center_text"
android:maxLines="2"
android:text="Hours"
android:textColor="#color/black_color"
android:textSize="16sp"
android:textStyle="bold" />
<TextView
android:id="#+id/center_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true" />
<TextView
android:id="#+id/news_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toEndOf="#+id/center_text"
android:layout_toRightOf="#+id/center_text"
android:gravity="end"
android:text="News Title"
android:textColor="#color/black_color"
android:textSize="16sp" />
</RelativeLayout>
</RelativeLayout>
<LinearLayout
android:id="#+id/expend_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/news_image"
android:orientation="vertical"
android:visibility="gone">
<TextView
android:id="#+id/full_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="Title Text"
android:textColor="#color/black_color"
android:textSize="20sp" />
<TextView
android:id="#+id/txt_description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="5dp"
android:text="#string/large_text1"
android:textColor="#color/black_color"
android:textSize="18sp" />
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end"
android:orientation="horizontal">
<ImageView
android:id="#+id/share_fb"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/share_facebook" />
<ImageView
android:id="#+id/share_whatsapp"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/share_whatsapp" />
<ImageView
android:id="#+id/share_twet"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="#drawable/share_tweet" />
</LinearLayout>
</LinearLayout>
</RelativeLayout>

Try to use NestedScrollView instead of ScrollView and set below to your activity :-
recyclerView.setNestedScrollingEnabled(false);
For more information you can refer below stackoverflow links:-
How to use RecyclerView inside NestedScrollView?
Recyclerview inside ScrollView not scrolling smoothly

BaseAdapter returns null [duplicate]

This question already has answers here:
What is a NullPointerException, and how do I fix it?
(12 answers)
Closed 6 years ago.
I have a fragment with a foldingcell view
here is the mainfragment -
public class FriendFragmentMain extends Fragment {
private static final String TAG = FriendFragmentMain.class.getSimpleName();
private FriendsCellListAdapter friendsCellListAdapter;
private List<FriendsItem> friendsItems;
private String URL_FRIEND="http://212.224.76.127/friends/friends.json";
private FragmentActivity fragmentActivity;
private Activity mActivity;
private ListView friendsListView;
public static FriendFragmentMain newInstance(){
FriendFragmentMain friendFragmentMain = new FriendFragmentMain();
return friendFragmentMain;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.friend_fragment_main, container, false);
friendsListView = (ListView) getActivity().findViewById(R.id.friend_super_list);
friendsItems = new ArrayList<>();
friendsCellListAdapter = new FriendsCellListAdapter(mActivity, friendsItems);
friendsListView.setAdapter(friendsCellListAdapter);
friendsListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int pos, long l) {
((FoldingCell) view).toggle(false);
friendsCellListAdapter.registerToggle(pos);
}
});
Cache cache = AppController.getInstance().getRequestQueue().getCache();
Cache.Entry entry = cache.get(URL_FRIEND);
if (entry != null){
try {
String data = new String(entry.data, "UTF-8");
try {
parseJsonFriend(new JSONObject(data));
} catch (JSONException e){
e.printStackTrace();
}
}catch (UnsupportedEncodingException e){
e.printStackTrace();
}
} else {
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET,
URL_FRIEND, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
VolleyLog.d(TAG, "Response:" + response.toString());
if (response != null) {
parseJsonFriend(response);
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "ERROR:" + error.getMessage());
}
});
AppController.getInstance().addToRequestQueue(jsonObjectRequest);
}
return view;
}
private void parseJsonFriend(JSONObject response){
try {
JSONArray friendArray = response.getJSONArray("friends");
for (int i =0; i < friendArray.length(); i++){
JSONObject friendObj = (JSONObject) friendArray.get(i);
FriendsItem item = new FriendsItem();
item.setId(friendObj.getInt("id"));
item.setName(friendObj.getString("name"));
item.setProfilePic(friendObj.getString("profilePic"));
item.setBackgroundImage(friendObj.getString("backgroundImage"));
item.setStatus(friendObj.getString("status"));
item.setWork(friendObj.getString("work"));
item.setLocation(friendObj.getString("location"));
String friendUrl = friendObj.isNull("website")? null : friendObj
.getString("website");
item.setWebsite(friendUrl);
friendsItems.add(item);
}
friendsCellListAdapter.notifyDataSetChanged();
} catch (JSONException e){
e.printStackTrace();
}
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
mActivity = activity;
}
}
the base adapter looks like this -
public class FriendsCellListAdapter extends BaseAdapter{
private HashSet<Integer> unfoldedIndexes = new HashSet<>();
private View.OnClickListener defaultMessageButton;
private View.OnClickListener defaultViewProfileButton;
private Activity activity;
private Context context;
private LayoutInflater inflater;
private List<FriendsItem> friendsItems;
ImageLoader imageLoader = AppController.getInstance().getImageLoader();
public FriendsCellListAdapter(Activity activity, List<FriendsItem> friendsItems){
this.activity = activity;
this.friendsItems = friendsItems;
}
#Override
public int getCount() {
return friendsItems.size();
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public Object getItem(int position) {
return friendsItems.get(position);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (imageLoader == null)
imageLoader = AppController.getInstance().getImageLoader();
if (inflater==null)
inflater = (LayoutInflater)activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
FriendsItem item = friendsItems.get(position);
FoldingCell cell = (FoldingCell) convertView;
ViewHolder viewHoler;
if (cell == null){
viewHoler = new ViewHolder();
cell = (FoldingCell) inflater.inflate(R.layout.friends_cell, parent, false);
viewHoler.profilePic = (NetworkImageView) cell.findViewById(R.id.friends_profile_pic);
viewHoler.clientName = (LoginTextView) cell.findViewById(R.id.client_name);
viewHoler.friendStatus = (LoginTextView) cell.findViewById(R.id.friend_status);
viewHoler.backgroundImage = (NetworkImageView) cell.findViewById(R.id.friend_background_image);
viewHoler.friendAvatar = (NetworkImageView) cell.findViewById(R.id.friends_avatar);
viewHoler.friendName = (LoginTextView) cell.findViewById(R.id.friend_name);
viewHoler.friendLocation = (LoginTextView) cell.findViewById(R.id.friend_location);
viewHoler.friendURL = (LoginTextView) cell.findViewById(R.id.friend_url);
viewHoler.friendWork = (LoginTextView) cell.findViewById(R.id.friend_work);
cell.setTag(viewHoler);
} else {
if (unfoldedIndexes.contains(position)){
cell.unfold(true);
} else {
cell.fold(true);
}
viewHoler = (ViewHolder) cell.getTag();
}
viewHoler.clientName.setText(item.getName());
viewHoler.friendName.setText(item.getName());
//chech for empty status
if (!TextUtils.isEmpty(item.getStatus())){
viewHoler.friendStatus.setText(item.getStatus());
viewHoler.friendStatus.setVisibility(View.VISIBLE);
} else {
viewHoler.friendStatus.setVisibility(View.GONE);
}
//check for empty location
if (!TextUtils.isEmpty(item.getLocation())){
viewHoler.friendLocation.setText(item.getLocation());
viewHoler.friendLocation.setVisibility(View.VISIBLE);
} else {
viewHoler.friendLocation.setVisibility(View.GONE);
}
//check for null url
if (item.getWebsite() != null){
viewHoler.friendURL.setText(Html.fromHtml("" + item.getWebsite()+""));
viewHoler.friendURL.setMovementMethod(LinkMovementMethod.getInstance());
viewHoler.friendURL.setVisibility(View.VISIBLE);
} else {
viewHoler.friendURL.setVisibility(View.GONE);
}
//check for empty work
if (!TextUtils.isEmpty(item.getWork())){
viewHoler.friendWork.setText(item.getWork());
viewHoler.friendWork.setVisibility(View.VISIBLE);
}else {
viewHoler.friendWork.setVisibility(View.GONE);
}
//profile pic
viewHoler.profilePic.setImageUrl(item.getProfilePic(), imageLoader);
viewHoler.friendAvatar.setImageUrl(item.getProfilePic(), imageLoader);
//background image
viewHoler.backgroundImage.setImageUrl(item.getBackgroundImage(), imageLoader);
return convertView;
}
public void registerToggle(int position){
if (unfoldedIndexes.contains(position))
registerFold(position);
else
registerUnfold(position);
}
public void registerFold(int position){unfoldedIndexes.remove(position);}
public void registerUnfold(int position){
unfoldedIndexes.add(position);
}
private class ViewHolder{
NetworkImageView profilePic;
LoginTextView clientName;
LoginTextView friendStatus;
NetworkImageView backgroundImage;
NetworkImageView friendAvatar;
LoginTextView friendName;
LoginTextView friendLocation;
LoginTextView friendURL;
LoginTextView friendWork;
}
}
now when i run it it throws -
Attempt to invoke virtual method 'void android.widget.ListView.setAdapter(android.widget.ListAdapter)' on a null object reference
at com.evolustudios.askin.askin.src.fragments.FriendFragmentMain.onCreateView(FriendFragmentMain.java:60)
this error. i am unable to find out why its throwing a null object? can anyone throw a light on why its showing null object.
the views are here- friends_cell
<com.ramotion.foldingcell.FoldingCell xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent" android:layout_height="wrap_content"
xmlns:folding-cell="http://schemas.android.com/apk/res-auto"
folding-cell:additionalFlipsCount="2"
folding-cell:animationDuration="1300"
folding-cell:backSideColor="#color/bgBackSideColor">
<include layout="#layout/friends_content_layout"/>
<include layout="#layout/friends_cell_title_layout"/>
</com.ramotion.foldingcell.FoldingCell>
friends_cell_title_layout -
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal" android:layout_width="match_parent"
android:layout_height="wrap_content"
android:baselineAligned="false">
<!--LEFT Part -->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="155dp"
android:layout_weight="3"
android:gravity="center_horizontal"
android:orientation="vertical"
android:paddingBottom="20dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="20dp"
android:background="#color/feed_item_border">
<com.android.volley.toolbox.NetworkImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/friends_profile_pic"
android:scaleType="fitCenter"/>
</RelativeLayout>
<!--RIGHT Part-->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:paddingBottom="20dp"
android:paddingEnd="20dp"
android:paddingStart="15dp"
android:paddingTop="20dp"
android:background="#color/feed_item_border">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:id="#+id/title_from_to_dots"
android:layout_marginEnd="10dp"
android:src="#drawable/from_to_purple"/>
<com.evolustudios.askin.askin.src.customfonts.LoginTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/client_name"
android:layout_alignTop="#+id/title_from_to_dots"
android:layout_marginTop="-5dp"
android:layout_toEndOf="#+id/title_from_to_dots"
android:ellipsize="marquee"
android:fadingEdge="horizontal"
android:singleLine="true"
android:textColor="#android:color/holo_blue_dark"
android:textSize="16sp"/>
<ImageView
android:layout_width="match_parent"
android:layout_height="1dp"
android:id="#+id/friend_profile_divider"
android:layout_below="#+id/client_name"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:layout_toEndOf="#+id/title_from_to_dots"
android:src="#color/contentDividerLine"/>
<com.evolustudios.askin.askin.src.customfonts.LoginTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/friend_status"
android:layout_below="#+id/friend_profile_divider"
android:layout_toEndOf="#+id/title_from_to_dots"
android:ellipsize="marquee"
android:fadingEdge="horizontal"
android:singleLine="true"
android:textColor="#android:color/holo_blue_dark"
android:textSize="16sp"/>
</RelativeLayout>
and friend_content_layout -
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="gone">
<!--Content header line-->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/text_password"
android:paddingBottom="7dp"
android:paddingLeft="12dp"
android:paddingRight="12dp"
android:paddingTop="7dp">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:src="#drawable/menu_icon"/>
</RelativeLayout>
<!--Content header Image-->
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<com.android.volley.toolbox.NetworkImageView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/friend_background_image"
android:scaleType="centerCrop"/>
</RelativeLayout>
<!--Content body layout-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:paddingBottom="6dp"
android:paddingLeft="20dp"
android:paddingRight="20dp"
android:paddingTop="9dp">
<!--avatar and name-->
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="match_parent">
<com.android.volley.toolbox.NetworkImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/friends_avatar"
android:layout_alignParentStart="true"
android:layout_marginBottom="5dp"/>
<com.evolustudios.askin.askin.src.customfonts.LoginTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/friend_name"
android:layout_alignTop="#+id/friends_avatar"
android:layout_marginBottom="2dp"
android:layout_marginStart="10dp"
android:layout_toEndOf="#+id/friends_avatar"
android:textColor="#color/mainTextColor"
android:textSize="18sp"
android:textStyle="bold"/>
<com.evolustudios.askin.askin.src.customfonts.LoginTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/friend_location"
android:layout_alignStart="#+id/friend_name"
android:layout_marginBottom="-2dp"
android:layout_marginStart="3dp"
android:layout_below="#+id/friend_name"
android:textColor="#a9a9a9"
android:textSize="12sp"/>
</RelativeLayout>
<!--Divider Line-->
<ImageView
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginBottom="6dp"
android:layout_marginTop="9dp"
android:src="#color/contentDividerLine"/>
<!--Address Part-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:baselineAligned="false"
android:orientation="horizontal">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1">
<com.evolustudios.askin.askin.src.customfonts.LoginTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/url_badge"
android:textColor="#a9a9a9"
android:layout_alignParentStart="true"
android:text="WEBSITE"/>
<com.evolustudios.askin.askin.src.customfonts.LoginTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/friend_url"
android:layout_alignStart="#+id/url_badge"
android:layout_below="#+id/url_badge"
android:textColor="#color/mainTextColor"
android:textSize="18sp"
android:textStyle="bold"/>
</RelativeLayout>
</LinearLayout>
<!--Divider Line-->
<ImageView
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_marginBottom="6dp"
android:layout_marginTop="7dp"
android:src="#color/contentDividerLine"/>
<!--Work Part-->
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:baselineAligned="false"
android:orientation="horizontal">
<RelativeLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1">
<com.evolustudios.askin.askin.src.customfonts.LoginTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/work_badge"
android:textColor="#a9a9a9"
android:layout_alignParentStart="true"
android:text="WORK"/>
<com.evolustudios.askin.askin.src.customfonts.LoginTextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/friend_work"
android:layout_alignStart="#+id/work_badge"
android:layout_below="#+id/work_badge"
android:textColor="#color/mainTextColor"
android:textSize="18sp"
android:textStyle="bold"/>
</RelativeLayout>
</LinearLayout>
<!--Buttons-->
<com.evolustudios.askin.askin.src.customfonts.LoginTextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/friend_send_message"
android:layout_marginTop="16dp"
android:background="#color/btnRequest"
android:padding="10dp"
android:text="Send Message"
android:textAlignment="center"
android:textColor="#color/mainTextColor"
android:textSize="20sp"/>
<com.evolustudios.askin.askin.src.customfonts.LoginTextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/friend_view_profile"
android:layout_marginTop="16dp"
android:background="#color/btnRequest"
android:padding="10dp"
android:text="View Profile"
android:textAlignment="center"
android:textColor="#color/mainTextColor"
android:textSize="20sp"/>
</LinearLayout>
</LinearLayout>

Initialize friendsItems before passing it to friendsCellListAdapter
friendsItems = new ArrayList<FriendsItem>(); // add this line
friendsCellListAdapter = new FriendsCellListAdapter(mActivity, friendsItems);
friendsListView.setAdapter(friendsCellListAdapter);

I am attaching a image to a recycler view which is being downloaded from server, but recycler view is not showing any image

The recycler view is showing other details in activity, except the image. I am loading an image through AsyncTask in getImage(). What am I doing wrong?
Here's my code:
MainActivity.java
int i;
Bitmap bitmap,imageOfPoday;
RecyclerView rvPoday;
ProductAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.app_bar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowHomeEnabled(true);
NavigationDrawerFragment drawerFragment = (NavigationDrawerFragment)getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), toolbar);
pd = ProgressDialog.show(MainActivity.this, "Please Wait...", null, true, true);
callPoday(PODAY_URL);
}
public List<Product> getDataPoday() {
List<Product> data=new ArrayList<>();
for(i = 0; i < parsedPODAY_ID.size(); i++) {
Product current=new Product();
current.productName=parsedPODAY_NAME.get(i);
current.price=parsedPODAY_OFFPRICE.get(i);
current.pImage=getImage("http://www.tontosworld.com/img/productimages/" + parsedPODAY_P_IMG.get(i));
Toast.makeText(this,current.pImage+"",Toast.LENGTH_LONG).show();
data.add(current);
}
return data;
}
public Bitmap getImage(String s) {
LoadImageTask task=new LoadImageTask();
task.execute(s);
return imageOfPoday;
}
class LoadImageTask extends AsyncTask<String,String,Bitmap> {
#Override
protected Bitmap doInBackground(String... strings) {
try {
bitmap = BitmapFactory.decodeStream((InputStream) new URL(strings[0]).getContent());
} catch (IOException e) {
e.printStackTrace();
}
return bitmap;
}
#Override
protected void onPostExecute(Bitmap b) {
super.onPostExecute(b);
if(b == null) {
Toast.makeText(MainActivity.this,"Error in loading image",Toast.LENGTH_LONG).show();
}
else {
imageOfPoday=b;
Toast.makeText(MainActivity.this,"This is for image"+imageOfPoday,Toast.LENGTH_LONG).show();
}
}
}
ProductAdapter.java
public class ProductAdapter extends RecyclerView.Adapter<ProductAdapter.MyViewHolder> {
public LayoutInflater inflater;
List<Product> data= Collections.emptyList();
public ProductAdapter(Context context,List<Product> data){
inflater = LayoutInflater.from(context);
this.data = data;
}
#Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View v = inflater.inflate(R.layout.recycler_view_single,parent,false);
MyViewHolder holder = new MyViewHolder(v);
return holder;
}
#Override
public void onBindViewHolder(MyViewHolder holder, int position) {
Product current = data.get(position);
holder.name.setText(current.productName);
holder.price.setText(current.price);
holder.image.setImageBitmap(current.pImage);
}
#Override
public int getItemCount() {
return data.size();
}
class MyViewHolder extends RecyclerView.ViewHolder {
TextView name,price;
ImageView image;
public MyViewHolder(View itemView) {
super(itemView);
name = (TextView)itemView.findViewById(R.id.rvItemName);
price = (TextView)itemView.findViewById(R.id.rvItemPrice);
image = (ImageView)itemView.findViewById(R.id.rvItemImage);
}
}
}
Product.java
public class Product {
String productName, price;
Bitmap pImage;
}
recycler_view_single.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:background="?android:selectableItemBackground">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:id="#+id/rvItemImage"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="#mipmap/ic_launcher" />
<TextView
android:id="#+id/rvItemName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name" />
<TextView
android:id="#+id/rvItemPrice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Price" />
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
activity_main.xml
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/drawer_layout">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:orientation="vertical">
<include
android:id="#+id/app_bar"
layout="#layout/app_bar"
android:layout_height="wrap_content"
android:layout_width="match_parent"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Product of the day"
android:textSize="25sp"
android:layout_marginLeft="10dp"
android:layout_marginTop="10dp"
android:textColor="#000"/>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/rvProductOfTheDay">
</android.support.v7.widget.RecyclerView>
</LinearLayout>
<fragment
android:id="#+id/fragment_navigation_drawer"
android:layout_width="280dp"
android:layout_height="match_parent"
android:layout_gravity="start"
app:layout="#layout/fragment_navigation_drawer"
android:name="com.tontosworld.tontosworld.NavigationDrawerFragment">
</fragment>
</android.support.v4.widget.DrawerLayout>
Thanks for your help.

You are missing the update notice for your adapter (which displays the data).
Everytime you update your List, you need to call
adapter.notifyDataSetChanged();
//if you only change one item, and use recyclerview, call:
adapter.notifyItemChanged();