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Textview not displaying in the card view of Recycler View

I want to display a String of names in the text view of recycler view. the .xml of this step is below
<androidx.cardview.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="wrap_content"
android:id="#+id/youtube_row_card_view"
android:layout_height="120dp"
android:layout_marginLeft="1dp"
android:layout_marginStart="1dp"
android:layout_marginTop="0dp"
android:layout_marginBottom="0dp"
app:cardCornerRadius="10dp"
app:contentPadding="4dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.google.android.youtube.player.YouTubeThumbnailView
android:id="#+id/video_thumbnail_image_view"
android:layout_width="140dp"
android:layout_height="90dp"
android:contentDescription="#string/thumbnail_image_view_desc"
android:scaleType="centerCrop" ></com.google.android.youtube.player.YouTubeThumbnailView>
<TextView
android:id="#+id/icon_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textColor="#android:color/black"></TextView>
</LinearLayout>
</androidx.cardview.widget.CardView>
the adapter class CustomAdapter is below
package com.CurrentMediaPakLiveNews;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import androidx.recyclerview.widget.RecyclerView;
import java.util.ArrayList;
public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.viewHolder> {
Context context;
ArrayList<itemModel> items;
public class viewHolder extends RecyclerView.ViewHolder {
public TextView iconName;
public viewHolder(View itemView) {
super(itemView);
this.iconName = itemView.findViewById(R.id.icon_name);
}
}
public CustomAdapter(Context context, ArrayList<itemModel> items) {
this.context = context;
this.items = items;
}
#Override
public viewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.youtube_video_custom_layout, parent, false);
viewHolder viewHolder = new viewHolder(view);
return viewHolder;
}
#Override
public void onBindViewHolder(viewHolder holder, int position) {
TextView iconName =holder.iconName;
holder.iconName.setText(items.get(position).getName());
}
#Override
public int getItemCount() {
return items.size();
}
}
while the itemModel class is declared as:
package com.CurrentMediaPakLiveNews;
public class itemModel {
String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
the MainActivity declaration for textview is below:
import android.util.Log;
import android.view.View;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.DefaultItemAnimator;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.google.android.gms.ads.AdRequest;
import com.google.android.gms.ads.AdView;
import com.google.android.gms.ads.MobileAds;
import com.google.android.gms.ads.initialization.InitializationStatus;
import com.google.android.gms.ads.initialization.OnInitializationCompleteListener;
import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubePlayer;
import com.google.android.youtube.player.YouTubePlayerSupportFragmentX;
import java.util.ArrayList;
import java.util.Collections;
import adapter.SecondYoutubeVideoAdapter;
import adapter.YoutubeVideoAdapter;
import utils.Constants;
import utils.RecyclerViewOnClickListener;
import utils.RecyclerViewOnClickListener2;
public class MainActivity extends AppCompatActivity {
private AdView mAdView;
private AdView mAdView2;
//custom adapter
private static final String TAG = MainActivity.class.getSimpleName();
private RecyclerView firstrecyclerView;
private RecyclerView secondrecyclerView;
ArrayList<itemModel> items;
String[] iconName = {"GEo","Ary","Sama","Hum","dawn","gnn","aj","92","news1","neo"};
//youtube player fragment
private YouTubePlayerSupportFragmentX youTubePlayerFragment;
private ArrayList<String> youtubeVideoArrayList;
private ArrayList<String> secondyoutubeVideoArrayList;
//youtube player to play video when new video selected
private YouTubePlayer youTubePlayer;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
generateDummyVideoList();
initializeYoutubePlayer();
setUpRecyclerView();
populateRecyclerView();
private void setUpRecyclerView() {
firstrecyclerView = findViewById(R.id.first_recycler_view);
firstrecyclerView.setHasFixedSize(true);
items = new ArrayList<>();
//Horizontal direction recycler view
LinearLayoutManager firstlinearLayoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
firstrecyclerView.setLayoutManager(firstlinearLayoutManager);
firstrecyclerView.setItemAnimator(new DefaultItemAnimator());
for (int i = 0; i < iconName.length; i++) {
itemModel itemModel = new itemModel();
itemModel.setName(iconName[i]);
items.add(itemModel);
}
private void populateRecyclerView() {
CustomAdapter adapterf = new CustomAdapter(this, items);
firstrecyclerView.setAdapter(adapterf);
final YoutubeVideoAdapter adapter = new YoutubeVideoAdapter(this, youtubeVideoArrayList);
firstrecyclerView.setAdapter(adapter);
the output is displaying everything except for the TEXTVIEW. no list is being displayed. I have tried ecery solution on stackoverflow regarding dependencies, class import etc but couldnt find any solution. Please can somebody help me in this as I am not a regular developer but a self learner.
My YoutubeVideoAdapter.java is below
package adapter;
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import androidx.core.content.ContextCompat;
import androidx.recyclerview.widget.RecyclerView;
import com.google.android.youtube.player.YouTubeInitializationResult;
import com.google.android.youtube.player.YouTubeThumbnailLoader;
import com.google.android.youtube.player.YouTubeThumbnailView;
import com.CurrentMediaPakLiveNews.R;
import java.util.ArrayList;
import holder.YoutubeViewHolder;
import utils.Constants;
/**
* Created by sonu on 10/11/17.
*/
public class YoutubeVideoAdapter extends RecyclerView.Adapter<YoutubeViewHolder> {
private static final String TAG = YoutubeVideoAdapter.class.getSimpleName();
private Context context;
private ArrayList<String> youtubeVideoModelArrayList;
//position to check which position is selected
private int selectedPosition = 0;
public YoutubeVideoAdapter(Context context, ArrayList<String> youtubeVideoModelArrayList) {
this.context = context;
this.youtubeVideoModelArrayList = youtubeVideoModelArrayList;
}
#Override
public YoutubeViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater layoutInflater = LayoutInflater.from(parent.getContext());
View view = layoutInflater.inflate(R.layout.youtube_video_custom_layout, parent, false);
return new YoutubeViewHolder(view);
}
#Override
public void onBindViewHolder(YoutubeViewHolder holder, final int position) {
//if selected position is equal to that mean view is selected so change the cardview color
if (selectedPosition == position) {
holder.youtubeCardView.setCardBackgroundColor(ContextCompat.getColor(context, R.color.colorPrimary));
} else {
//if selected position is not equal to that mean view is not selected so change the cardview color to white back again
holder.youtubeCardView.setCardBackgroundColor(ContextCompat.getColor(context, android.R.color.white));
}
/* initialize the thumbnail image view , we need to pass Developer Key */
holder.videoThumbnailImageView.initialize(Constants.DEVELOPER_KEY, new YouTubeThumbnailView.OnInitializedListener() {
#Override
public void onInitializationSuccess(YouTubeThumbnailView youTubeThumbnailView, final YouTubeThumbnailLoader youTubeThumbnailLoader) {
//when initialization is sucess, set the video id to thumbnail to load
youTubeThumbnailLoader.setVideo(youtubeVideoModelArrayList.get(position));
youTubeThumbnailLoader.setOnThumbnailLoadedListener(new YouTubeThumbnailLoader.OnThumbnailLoadedListener() {
#Override
public void onThumbnailLoaded(YouTubeThumbnailView youTubeThumbnailView, String s) {
//when thumbnail loaded successfully release the thumbnail loader as we are showing thumbnail in adapter
youTubeThumbnailLoader.release();
}
#Override
public void onThumbnailError(YouTubeThumbnailView youTubeThumbnailView, YouTubeThumbnailLoader.ErrorReason errorReason) {
//print or show error when thumbnail load failed
Log.e(TAG, "Youtube Thumbnail Error");
}
});
}
#Override
public void onInitializationFailure(YouTubeThumbnailView youTubeThumbnailView, YouTubeInitializationResult youTubeInitializationResult) {
//print or show error when initialization failed
Log.e(TAG, "Youtube Initialization Failure");
}
});
}
#Override
public int getItemCount() {
return youtubeVideoModelArrayList != null ? youtubeVideoModelArrayList.size() : 0;
}
/**
* method the change the selected position when item clicked
* #param selectedPosition
*/
public void setSelectedPosition(int selectedPosition) {
this.selectedPosition = selectedPosition;
//when item selected notify the adapter
notifyDataSetChanged();
}
}

You are applying differente adapters to the same recyclerview, which means the last one that will be visible will be the last one.
You can see it here:
CustomAdapter adapterf = new CustomAdapter(this, items);
firstrecyclerView.setAdapter(adapterf);
final YoutubeVideoAdapter adapter = new YoutubeVideoAdapter(this, youtubeVideoArrayList);
firstrecyclerView.setAdapter(adapter);
If you notice, you are doing firstrecyclerView.setAdapter(adapterf) where you attach the CustomAdapter. Then, you do again firstrecyclerView.setAdapter(adapter) where you attach the YoutubeVideoAdapter. Only the last adapter will take place, since it overrides the previous one.
EDIT:
As I can understand, you want to render a view where you display an YoutubeThumbnail and a TextView underneath that thumbnail. In your CustomAdapter, you are using a list of itemModel. Consider adding an attribute to that itemModel that holds the Youtube video URL. If you do it this way, you can show the thumbnail and the TextView at the same time, you just need to modify your CustomAdapter to the same as your YoutubeVideoAdapter.
I.e:
Your ItemModel would look like this:
public class itemModel {
String name;
String youtubeUrl;
public itemoModel(String name, String youtubeUrl){
this.name = name;
this.youtubeUrl = youtubeUrl;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getYoutubeUrl(){
return this.youtubeUrl;
}
public void setYoutubeUrl(String youtubeUrl){
this.youtubeUrl = youtubeUrl;
}
}
And your CustomAdapter:
public class viewHolder extends RecyclerView.ViewHolder {
public TextView iconName;
public YouTubeThumbnailView thumbnail;
public viewHolder(View itemView) {
super(itemView);
this.iconName = itemView.findViewById(R.id.icon_name);
this.thumbnail = itemView.findViewById(R.id.video_thumbnail_image_view);
}
}
#Override
public void onBindViewHolder(viewHolder holder, int position) {
TextView iconName =holder.iconName;
holder.iconName.setText(items.get(position).getName());
YouTubeThumbnailView thumbnail = holder.thumbnail;
String youtubeUrl = items.get(position).getYoutubeUrl();
//Do what you need to do with the youtubeUrl
}
This way you just need to use one adapter and one recyclerView with the code you've already done here:
CustomAdapter adapterf = new CustomAdapter(this, items);
firstrecyclerView.setAdapter(adapterf);
Let me know if it helped you!

Null Pointer on RecyclerView

I am getting a null pointer exception on the following statement within my recyclersetup method.
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
It is due to the following statement not setting a pointer to recyclerView in the previous statement which is
recyclerView = getView().findViewById(R.id.check_in_recent_row);
I cannot determine why I am not getting the recyclerView pointer established via this statement. the ID for the data is correct. What am I missing?
This is the entire fragment code
CheckInRecentList.java
package com.example.checkingin;
import android.content.Context;
import android.net.Uri;
import android.nfc.Tag;
import android.os.Bundle;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;
import androidx.lifecycle.LiveData;
import androidx.lifecycle.Observer;
import androidx.lifecycle.ViewModelProvider;
import androidx.lifecycle.ViewModelProvider.Factory;
import androidx.recyclerview.widget.DividerItemDecoration;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;
import java.util.List;
import static androidx.constraintlayout.widget.Constraints.TAG;
/**
* A simple {#link Fragment} subclass.
* Activities that contain this fragment must implement the
* {#link CheckInRecentList.OnFragmentInteractionListener} interface
* to handle interaction events.
* Use the {#link CheckInRecentList#newInstance} factory method to
* create an instance of this fragment.
*/
public class CheckInRecentList extends Fragment {
// TODO: Rename parameter arguments, choose names that match
// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
private static final String ARG_PARAM1 = "param1";
private static final String ARG_PARAM2 = "param2";
private RecyclerView recyclerView;
private RecyclerView.Adapter checkInListAdapter;
//private RecyclerView.LayoutManager layoutManager;
// TODO: Rename and change types of parameters
private String mParam1;
private String mParam2;
private MainViewModel mViewModel;
private CheckInListAdapter adapter;
private MainViewModelProviderFactory viewModelFactory;
private TextView checkInLastDateTime;
private TextView checkInTitle;
private TextView checkInDestinationName;
private TextView checkInComments;
private OnFragmentInteractionListener mListener;
public CheckInRecentList() {
// Required empty public constructor
}
/**
* Use this factory method to create a new instance of
* this fragment using the provided parameters.
*
* #param param1 Parameter 1.
* #param param2 Parameter 2.
* #return A new instance of fragment CheckInRecentList.
*/
// TODO: Rename and change types and number of parameters
public static CheckInRecentList newInstance(String param1, String param2) {
CheckInRecentList fragment = new CheckInRecentList();
Bundle args = new Bundle();
args.putString(ARG_PARAM1, param1);
args.putString(ARG_PARAM2, param2);
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.i(TAG, "onCreate: On Create");
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
// These were originally set up from the recycler view add to the fragment
// recyclerView = findViewById(R.id.check_in_recent_recycler_view);
// use this setting to improve performance if you know that changes
// in content do not change the layout size of the RecyclerView
//recyclerView.setHasFixedSize(true);
/*
// use a linear layout manager
layoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManager);
*/
// specify an adapter (see also next example)
//checkInListAdapter = new CheckInListAdapter();
// recyclerView.setAdapter(checkInListAdapter);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
mViewModel = new ViewModelProvider(this, viewModelFactory).get(MainViewModel.class);
Log.i(TAG, "onCreateView: On Create View");
// Inflate the layout for this fragment
return inflater.inflate(R.layout.recycler_view_item, container, false);
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
Log.i(TAG, "onButtonPressed: ");
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
Log.i(TAG, "onAttach: OnAttach");
viewModelFactory = new MainViewModelProviderFactory(context.getApplicationContext());
mViewModel = new ViewModelProvider(this, viewModelFactory).get(MainViewModel.class);
if (context instanceof OnFragmentInteractionListener) {
mListener = (OnFragmentInteractionListener) context;
} else {
throw new RuntimeException(context.toString()
+ " must implement OnFragmentInteractionListener");
}
Log.i(TAG,"OnAttach completed");
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
Log.i(TAG, "onActivityCreated: On Activity Created");
mViewModel = new ViewModelProvider(this, viewModelFactory).get(MainViewModel.class);
checkInLastDateTime = getView().findViewById(R.id.checkInLastDateTime);
checkInTitle = getView().findViewById(R.id.checkInTitle);
checkInDestinationName = getView().findViewById(R.id.checkInDestinationName);
checkInComments = getView().findViewById(R.id.checkInComments);
recyclerSetup();
Log.i(TAG,"OnActivityCreated: Recycler SetUp");
//listenerSetup();
//Log.i(TAG, "onActivityCreated: Listener SetUp");
observerSetup();
Log.i(TAG, "onActivityCreated: Observer SetUp");
}
#Override
public void onDetach() {
super.onDetach();
Log.i(TAG, "onDetach: ");
mListener = null;
}
/**
* This interface must be implemented by activities that contain this
* fragment to allow an interaction in this fragment to be communicated
* to the activity and potentially other fragments contained in that
* activity.
* <p>
* See the Android Training lesson <a href=
* "http://developer.android.com/training/basics/fragments/communicating.html"
* >Communicating with Other Fragments</a> for more information.
*/
public interface OnFragmentInteractionListener {
// TODO: Update argument type and name
void onFragmentInteraction(Uri uri);
}
private void clearFields() {
checkInLastDateTime.setText("");
checkInDestinationName.setText("");
checkInTitle.setText("");
checkInComments.setText("");
}
private void listenerSetup() {
ImageButton editCheckInButton = getView().findViewById(R.id.checkInEditButton);
ImageButton resendCheckInButton = getView().findViewById(R.id.checkInResendButton);
mViewModel = new ViewModelProvider(this, viewModelFactory).get(MainViewModel.class);
Log.i(TAG, "listenerSetup: ");
editCheckInButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//put in edit check in logic
}
});
resendCheckInButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//put in resend logic
}
});
}
private void observerSetup() {
Log.i(TAG, "observerSetup:");
if(mViewModel.getAllCheckIn() != null)
mViewModel.getAllCheckIn().observe(getViewLifecycleOwner(), new Observer<List<CheckInTable>>(){
#Override
public void onChanged(#Nullable final List<CheckInTable> allCheckIn) {
adapter.setCheckInList(allCheckIn);
}
});
mViewModel.getAllCheckIn().observe(getViewLifecycleOwner(), new Observer<List<CheckInTable>>() {
#Override
public void onChanged(#Nullable final List<CheckInTable> allCheckIn) {
if (allCheckIn.size() > 0) {
Log.i(TAG, "onChanged: all check in size greater than zero");
checkInLastDateTime.setText(allCheckIn.get(0).getCheckInLastDateTime());
Log.i(TAG, "onChanged: running again");
checkInDestinationName.setText(allCheckIn.get(0).getCheckInDestinationName());
checkInTitle.setText(allCheckIn.get(0).getCheckInTitle());
checkInComments.setText(allCheckIn.get(0).getCheckInComments());
} else {
checkInLastDateTime.setText("None Found");
}
}
});
}
private void recyclerSetup() {
Log.i(TAG, "recyclerSetup: ");
adapter = new CheckInListAdapter(R.layout.fragment_check_in_recent_list);
RecyclerView recyclerView = getView().findViewById(R.id.check_in_recent_recycler_view);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerView.setAdapter(adapter);
//recyclerView.addItemDecoration(new DividerItemDecoration(this, LinearLayoutManager.VERTICAL));
}
}
The following are the xml files for the fragment
fragment_check_in_recent_list.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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=".CheckInRecentList">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/check_in_recent_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:listitem="#layout/recycler_view_item"/>
</FrameLayout>
and recycler_view_item.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="horizontal"
android:padding="8dp"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TableLayout
android:id="#+id/check_in_recent_row"
android:layout_width="389dp"
android:layout_height="match_parent"
android:layout_gravity="center"
android:padding="30dp">
<TableRow
android:layout_width="346dp"
android:layout_height="match_parent">
<TextView
android:id="#+id/checkInLastDateTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView"/>
<TextView
android:id="#+id/checkInTitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
<TextView
android:id="#+id/checkInDestinationName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
<ImageButton
android:id="#+id/checkInEditButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#android:drawable/ic_menu_edit"
android:tooltipText="Edit Check In" />
<ImageButton
android:id="#+id/checkInResendButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#android:drawable/ic_menu_share"
android:tooltipText="Resend Check In" />
</TableRow>
<TableRow
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/checkInComments"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
</TableRow>
</TableLayout>
</LinearLayout>
CheckInListAdapter
package com.example.checkingin;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
import android.app.Activity;
import androidx.lifecycle.ViewModelProvider;
import androidx.recyclerview.widget.RecyclerView;
import java.util.List;
import static androidx.constraintlayout.widget.Constraints.TAG;
public class CheckInListAdapter extends RecyclerView.Adapter<CheckInListAdapter.ViewHolder>{
private int checkInListLayout;
private List<CheckInTable> checkInList;
public CheckInListAdapter(int layoutId) {
checkInListLayout = layoutId;
}
public void setCheckInList(List<CheckInTable> allCheckIn) {
checkInList = allCheckIn;
notifyDataSetChanged();
}
#Override
public int getItemCount() {
return checkInList == null ? 0 : checkInList.size();
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Log.i(TAG, "onCreateViewHolder: ");
View view = LayoutInflater.from(
parent.getContext()).inflate(checkInListLayout, parent, false);
ViewHolder checkInListViewHolder = new ViewHolder(view);
return checkInListViewHolder;
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int listPosition) {
TextView checkInLastDateTime = holder.checkInLastDateTime;
TextView checkInTitle = holder.checkInTitle;
TextView checkInDestinationName = holder.checkInDestinationName;
TextView checkInComments = holder.checkInComments;
ImageView checkInEditButton = holder.checkInEditButton;
ImageView checkInResendButton = holder.checkInResendButton;
Log.i(TAG, "onBindViewHolder: ");
checkInLastDateTime.setText(checkInList.get(listPosition).getCheckInLastDateTime());
checkInTitle.setText(checkInList.get(listPosition).getCheckInTitle());
checkInDestinationName.setText(checkInList.get(listPosition).getCheckInDestinationName());
checkInComments.setText(checkInList.get(listPosition).getCheckInComments());
holder.checkInEditButton.setImageResource(R.drawable.ic_menu_edit);
holder.checkInResendButton.setImageResource(R.drawable.ic_menu_share);
ImageButton editCheckInButton = checkInEditButton.findViewById(R.id.checkInEditButton);
ImageButton resendCheckInButton = checkInResendButton.findViewById(R.id.checkInResendButton);
editCheckInButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//put in edit check in logic
}
}
);
resendCheckInButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//put in resend logic
}
});
}
static class ViewHolder extends RecyclerView.ViewHolder {
TextView checkInLastDateTime;
TextView checkInTitle;
TextView checkInDestinationName;
TextView checkInComments;
ImageView checkInEditButton;
ImageView checkInResendButton;
ViewHolder(View itemView) {
super(itemView);
Log.i(TAG, "ViewHolder: ");
checkInLastDateTime = itemView.findViewById(R.id.checkInLastDateTime);
checkInTitle = itemView.findViewById(R.id.checkInTitle);
checkInDestinationName = itemView.findViewById(R.id.checkInDestinationName);
checkInComments = itemView.findViewById(R.id.checkInComments);
checkInEditButton = itemView.findViewById(R.id.checkInEditButton);
checkInResendButton = itemView.findViewById(R.id.checkInResendButton);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
}
});
}
}
}

Your RecyclerView's ID is check_in_recent_recycler_view. Your findViewById call is using check_in_recent_row. These need to match.

Android load full image with recyclerview, cardview and volley from php mysql

The code below downloads images from a server and displays them in a recyclerview using php mysql and volley library as seen in the attached image. As of now when one clicks the image only toasts the image name. I want a user to be able to view the full image on click. Sorry to post all the code but its a desperate situation.
RecyclerView code
<?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:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerview1"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</RelativeLayout>
CardView code
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/cardview1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardElevation="5dp"
card_view:contentPadding="5dp"
card_view:cardCornerRadius="5dp"
card_view:cardMaxElevation="5dp"
>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#ECEFF1">
<com.android.volley.toolbox.NetworkImageView
android:id="#+id/VolleyImageView"
android:layout_width="150dp"
android:layout_height="100dp"
android:src="#mipmap/ic_launcher"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"/>
<TextView
android:id="#+id/ImageNameTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_toEndOf="#+id/VolleyImageView"
android:layout_toRightOf="#+id/VolleyImageView"
android:text="JSon Image Name"
android:textColor="#000"
android:textSize="15dp" />
</RelativeLayout>
</androidx.cardview.widget.CardView>
MainActivity
package com.ny.fetchallimages;
import android.os.Bundle;
import org.json.JSONArray;
import java.util.ArrayList;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonArrayRequest;
import com.android.volley.toolbox.Volley;
import java.util.List;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import org.json.JSONException;
import org.json.JSONObject;
public class MainActivity extends AppCompatActivity {
List<DataAdapter> ListOfdataAdapter;
RecyclerView recyclerView;
String HTTP_JSON_URL = "http://*************.php";
String Image_URL_JSON = "image_data";
String Image_Name_JSON = "image_tag";
JsonArrayRequest RequestOfJSonArray ;
RequestQueue requestQueue ;
View view ;
int RecyclerViewItemPosition ;
RecyclerView.LayoutManager layoutManagerOfrecyclerView;
RecyclerView.Adapter recyclerViewadapter;
ArrayList<String> ImageTitleNameArrayListForClick;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageTitleNameArrayListForClick = new ArrayList<>();
ListOfdataAdapter = new ArrayList<>();
recyclerView = (RecyclerView) findViewById(R.id.recyclerview1);
recyclerView.setHasFixedSize(true);
layoutManagerOfrecyclerView = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManagerOfrecyclerView);
JSON_HTTP_CALL();
// Implementing Click Listener on RecyclerView.
recyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
GestureDetector gestureDetector = new GestureDetector(MainActivity.this, new GestureDetector.SimpleOnGestureListener() {
#Override public boolean onSingleTapUp(MotionEvent motionEvent) {
return true;
}
});
#Override
public boolean onInterceptTouchEvent(RecyclerView Recyclerview, MotionEvent motionEvent) {
view = Recyclerview.findChildViewUnder(motionEvent.getX(), motionEvent.getY());
if(view != null && gestureDetector.onTouchEvent(motionEvent)) {
//Getting RecyclerView Clicked Item value.
RecyclerViewItemPosition = Recyclerview.getChildAdapterPosition(view);
// Showing RecyclerView Clicked Item value using Toast.
Toast.makeText(MainActivity.this, ImageTitleNameArrayListForClick.get(RecyclerViewItemPosition), Toast.LENGTH_LONG).show();
}
return false;
}
#Override
public void onTouchEvent(RecyclerView Recyclerview, MotionEvent motionEvent) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
});
}
public void JSON_HTTP_CALL(){
RequestOfJSonArray = new JsonArrayRequest(HTTP_JSON_URL,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
ParseJSonResponse(response);
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
requestQueue = Volley.newRequestQueue(MainActivity.this);
requestQueue.add(RequestOfJSonArray);
}
public void ParseJSonResponse(JSONArray array){
for(int i = 0; i<array.length(); i++) {
DataAdapter GetDataAdapter2 = new DataAdapter();
JSONObject json = null;
try {
json = array.getJSONObject(i);
GetDataAdapter2.setImageTitle(json.getString(Image_Name_JSON));
// Adding image title name in array to display on RecyclerView click event.
ImageTitleNameArrayListForClick.add(json.getString(Image_Name_JSON));
GetDataAdapter2.setImageUrl(json.getString(Image_URL_JSON));
} catch (JSONException e) {
e.printStackTrace();
}
ListOfdataAdapter.add(GetDataAdapter2);
}
recyclerViewadapter = new RecyclerViewAdapter(ListOfdataAdapter, this);
recyclerView.setAdapter(recyclerViewadapter);
}
}
RecyclerViewAdapter
package com.ny.fetchallimages;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.android.volley.toolbox.NetworkImageView;
import java.util.List;
import com.android.volley.toolbox.ImageLoader;
import android.content.Context;
import android.view.LayoutInflater;
import androidx.recyclerview.widget.RecyclerView;
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
Context context;
List<DataAdapter> dataAdapters;
ImageLoader imageLoader;
public RecyclerViewAdapter(List<DataAdapter> getDataAdapter, Context context){
super();
this.dataAdapters = getDataAdapter;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.cardview, parent, false);
ViewHolder viewHolder = new ViewHolder(view);
return viewHolder;
}
#Override
public void onBindViewHolder(ViewHolder Viewholder, int position) {
DataAdapter dataAdapterOBJ = dataAdapters.get(position);
imageLoader = ImageAdapter.getInstance(context).getImageLoader();
imageLoader.get(dataAdapterOBJ.getImageUrl(),
ImageLoader.getImageListener(
Viewholder.VollyImageView,//Server Image
R.mipmap.ic_launcher,//Before loading server image the default showing image.
android.R.drawable.ic_dialog_alert //Error image if requested image dose not found on server.
)
);
Viewholder.VollyImageView.setImageUrl(dataAdapterOBJ.getImageUrl(), imageLoader);
Viewholder.ImageTitleTextView.setText(dataAdapterOBJ.getImageTitle());
}
#Override
public int getItemCount() {
return dataAdapters.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
public TextView ImageTitleTextView;
public NetworkImageView VollyImageView ;
public ViewHolder(View itemView) {
super(itemView);
ImageTitleTextView = (TextView) itemView.findViewById(R.id.ImageNameTextView) ;
VollyImageView = (NetworkImageView) itemView.findViewById(R.id.VolleyImageView) ;
}
}
}
ImageAdapter
package com.ny.fetchallimages;
import android.graphics.Bitmap;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.RequestQueue;
import android.content.Context;;
import com.android.volley.toolbox.DiskBasedCache;
import com.android.volley.Cache;
import androidx.collection.LruCache;
import com.android.volley.Network;
import com.android.volley.toolbox.BasicNetwork;
import com.android.volley.toolbox.HurlStack;
public class ImageAdapter {
public static ImageAdapter imageAdapter;
public Network networkOBJ ;
public RequestQueue requestQueue1;
public ImageLoader Imageloader1;
public Cache cache1 ;
public static Context context1;
LruCache<String, Bitmap> LRUCACHE = new LruCache<String, Bitmap>(30);
private ImageAdapter(Context context) {
this.context1 = context;
this.requestQueue1 = RequestQueueFunction();
Imageloader1 = new ImageLoader(requestQueue1, new ImageLoader.ImageCache() {
#Override
public Bitmap getBitmap(String URL) {
return LRUCACHE.get(URL);
}
#Override
public void putBitmap(String url, Bitmap bitmap) {
LRUCACHE.put(url, bitmap);
}
});
}
public ImageLoader getImageLoader() {
return Imageloader1;
}
public static ImageAdapter getInstance(Context SynchronizedContext) {
if (imageAdapter == null) {
imageAdapter = new ImageAdapter(SynchronizedContext);
}
return imageAdapter;
}
public RequestQueue RequestQueueFunction() {
if (requestQueue1 == null) {
cache1 = new DiskBasedCache(context1.getCacheDir());
networkOBJ = new BasicNetwork(new HurlStack());
requestQueue1 = new RequestQueue(cache1, networkOBJ);
requestQueue1.start();
}
return requestQueue1;
}
}
DataAdapter
package com.ny.fetchallimages;
public class DataAdapter
{
public String ImageURL;
public String ImageTitle;
public String getImageUrl() {
return ImageURL;
}
public void setImageUrl(String imageServerUrl) {
this.ImageURL = imageServerUrl;
}
public String getImageTitle() {
return ImageTitle;
}
public void setImageTitle(String Imagetitlename) {
this.ImageTitle = Imagetitlename;
}
}

This worked by creating a new activity, then in on item click, get the item clicked position URL, send an intent to the activity with the image URL as extras. Get the image url from the intent in the activity then load the image.

Android full image with recyclerview, cardview and volley from php mysql

The code below downloads images from a server and displays them in a recyclerview using php mysql and volley library as seen in the image. As of now when one clicks the image it only toasts the image name. I want a user to be able to view the full image on click. Sorry to post all the code but its a desperate situation.
RECYCLERVIEW CODE
<?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:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerview1"
android:layout_width="fill_parent"
android:layout_height="fill_parent" />
</RelativeLayout>
CARDVIEW CODE
<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="#+id/cardview1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
card_view:cardElevation="5dp"
card_view:contentPadding="5dp"
card_view:cardCornerRadius="5dp"
card_view:cardMaxElevation="5dp"
>
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="#ECEFF1">
<com.android.volley.toolbox.NetworkImageView
android:id="#+id/VolleyImageView"
android:layout_width="150dp"
android:layout_height="100dp"
android:src="#mipmap/ic_launcher"
android:layout_marginTop="10dp"
android:layout_marginBottom="10dp"/>
<TextView
android:id="#+id/ImageNameTextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="10dp"
android:layout_toEndOf="#+id/VolleyImageView"
android:layout_toRightOf="#+id/VolleyImageView"
android:text="JSon Image Name"
android:textColor="#000"
android:textSize="15dp" />
</RelativeLayout>
</androidx.cardview.widget.CardView>
MAIN ACTIVITY
package com.ny.fetchallimages;
import android.os.Bundle;
import org.json.JSONArray;
import java.util.ArrayList;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonArrayRequest;
import com.android.volley.toolbox.Volley;
import java.util.List;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import org.json.JSONException;
import org.json.JSONObject;
public class MainActivity extends AppCompatActivity {
List<DataAdapter> ListOfdataAdapter;
RecyclerView recyclerView;
String HTTP_JSON_URL = "http://*************.php";
String Image_URL_JSON = "image_data";
String Image_Name_JSON = "image_tag";
JsonArrayRequest RequestOfJSonArray ;
RequestQueue requestQueue ;
View view ;
int RecyclerViewItemPosition ;
RecyclerView.LayoutManager layoutManagerOfrecyclerView;
RecyclerView.Adapter recyclerViewadapter;
ArrayList<String> ImageTitleNameArrayListForClick;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageTitleNameArrayListForClick = new ArrayList<>();
ListOfdataAdapter = new ArrayList<>();
recyclerView = (RecyclerView) findViewById(R.id.recyclerview1);
recyclerView.setHasFixedSize(true);
layoutManagerOfrecyclerView = new LinearLayoutManager(this);
recyclerView.setLayoutManager(layoutManagerOfrecyclerView);
JSON_HTTP_CALL();
// Implementing Click Listener on RecyclerView.
recyclerView.addOnItemTouchListener(new RecyclerView.OnItemTouchListener() {
GestureDetector gestureDetector = new GestureDetector(MainActivity.this, new GestureDetector.SimpleOnGestureListener() {
#Override public boolean onSingleTapUp(MotionEvent motionEvent) {
return true;
}
});
#Override
public boolean onInterceptTouchEvent(RecyclerView Recyclerview, MotionEvent motionEvent) {
view = Recyclerview.findChildViewUnder(motionEvent.getX(), motionEvent.getY());
if(view != null && gestureDetector.onTouchEvent(motionEvent)) {
//Getting RecyclerView Clicked Item value.
RecyclerViewItemPosition = Recyclerview.getChildAdapterPosition(view);
// Showing RecyclerView Clicked Item value using Toast.
Toast.makeText(MainActivity.this, ImageTitleNameArrayListForClick.get(RecyclerViewItemPosition), Toast.LENGTH_LONG).show();
}
return false;
}
#Override
public void onTouchEvent(RecyclerView Recyclerview, MotionEvent motionEvent) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
});
}
public void JSON_HTTP_CALL(){
RequestOfJSonArray = new JsonArrayRequest(HTTP_JSON_URL,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
ParseJSonResponse(response);
}
},
new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
requestQueue = Volley.newRequestQueue(MainActivity.this);
requestQueue.add(RequestOfJSonArray);
}
public void ParseJSonResponse(JSONArray array){
for(int i = 0; i<array.length(); i++) {
DataAdapter GetDataAdapter2 = new DataAdapter();
JSONObject json = null;
try {
json = array.getJSONObject(i);
GetDataAdapter2.setImageTitle(json.getString(Image_Name_JSON));
// Adding image title name in array to display on RecyclerView click event.
ImageTitleNameArrayListForClick.add(json.getString(Image_Name_JSON));
GetDataAdapter2.setImageUrl(json.getString(Image_URL_JSON));
} catch (JSONException e) {
e.printStackTrace();
}
ListOfdataAdapter.add(GetDataAdapter2);
}
recyclerViewadapter = new RecyclerViewAdapter(ListOfdataAdapter, this);
recyclerView.setAdapter(recyclerViewadapter);
}
}
RECYCLERVIEWADAPTER
package com.ny.fetchallimages;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import com.android.volley.toolbox.NetworkImageView;
import java.util.List;
import com.android.volley.toolbox.ImageLoader;
import android.content.Context;
import android.view.LayoutInflater;
import androidx.recyclerview.widget.RecyclerView;
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder> {
Context context;
List<DataAdapter> dataAdapters;
ImageLoader imageLoader;
public RecyclerViewAdapter(List<DataAdapter> getDataAdapter, Context context){
super();
this.dataAdapters = getDataAdapter;
this.context = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.cardview, parent, false);
ViewHolder viewHolder = new ViewHolder(view);
return viewHolder;
}
#Override
public void onBindViewHolder(ViewHolder Viewholder, int position) {
DataAdapter dataAdapterOBJ = dataAdapters.get(position);
imageLoader = ImageAdapter.getInstance(context).getImageLoader();
imageLoader.get(dataAdapterOBJ.getImageUrl(),
ImageLoader.getImageListener(
Viewholder.VollyImageView,//Server Image
R.mipmap.ic_launcher,//Before loading server image the default showing image.
android.R.drawable.ic_dialog_alert //Error image if requested image dose not found on server.
)
);
Viewholder.VollyImageView.setImageUrl(dataAdapterOBJ.getImageUrl(), imageLoader);
Viewholder.ImageTitleTextView.setText(dataAdapterOBJ.getImageTitle());
}
#Override
public int getItemCount() {
return dataAdapters.size();
}
class ViewHolder extends RecyclerView.ViewHolder{
public TextView ImageTitleTextView;
public NetworkImageView VollyImageView ;
public ViewHolder(View itemView) {
super(itemView);
ImageTitleTextView = (TextView) itemView.findViewById(R.id.ImageNameTextView) ;
VollyImageView = (NetworkImageView) itemView.findViewById(R.id.VolleyImageView) ;
}
}
}
IMAGEADAPTER
package com.ny.fetchallimages;
import android.graphics.Bitmap;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.RequestQueue;
import android.content.Context;;
import com.android.volley.toolbox.DiskBasedCache;
import com.android.volley.Cache;
import androidx.collection.LruCache;
import com.android.volley.Network;
import com.android.volley.toolbox.BasicNetwork;
import com.android.volley.toolbox.HurlStack;
public class ImageAdapter {
public static ImageAdapter imageAdapter;
public Network networkOBJ ;
public RequestQueue requestQueue1;
public ImageLoader Imageloader1;
public Cache cache1 ;
public static Context context1;
LruCache<String, Bitmap> LRUCACHE = new LruCache<String, Bitmap>(30);
private ImageAdapter(Context context) {
this.context1 = context;
this.requestQueue1 = RequestQueueFunction();
Imageloader1 = new ImageLoader(requestQueue1, new ImageLoader.ImageCache() {
#Override
public Bitmap getBitmap(String URL) {
return LRUCACHE.get(URL);
}
#Override
public void putBitmap(String url, Bitmap bitmap) {
LRUCACHE.put(url, bitmap);
}
});
}
public ImageLoader getImageLoader() {
return Imageloader1;
}
public static ImageAdapter getInstance(Context SynchronizedContext) {
if (imageAdapter == null) {
imageAdapter = new ImageAdapter(SynchronizedContext);
}
return imageAdapter;
}
public RequestQueue RequestQueueFunction() {
if (requestQueue1 == null) {
cache1 = new DiskBasedCache(context1.getCacheDir());
networkOBJ = new BasicNetwork(new HurlStack());
requestQueue1 = new RequestQueue(cache1, networkOBJ);
requestQueue1.start();
}
return requestQueue1;
}
}
DATAADAPTER
package com.ny.fetchallimages;
public class DataAdapter
{
public String ImageURL;
public String ImageTitle;
public String getImageUrl() {
return ImageURL;
}
public void setImageUrl(String imageServerUrl) {
this.ImageURL = imageServerUrl;
}
public String getImageTitle() {
return ImageTitle;
}
public void setImageTitle(String Imagetitlename) {
this.ImageTitle = Imagetitlename;
}
}

just when the user clicked on an item do like me...
Intent i = new Intent(context,BigImageActivity);
intent.putExtra("image_url",iamge_url);
context.startActivity(i);
in big_image_layout.xml
<ImageView
android:id="#+id/iv_big_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
in onCreate BigImageActivity:
String img_url = getIntent.getStringExtra("image_url");
and for showing image use Glide:
Glide.with(context)
.load(img_url)
.diskCacheStrategy(DiskCacheStrategy.NONE)
.dontAnimate()
.into(iv_big_image);
and done!!!
I hope this useful for you.

I made it to show full images by fetching the url and parsing it to a new activity. Thanks for the positive responses

click on textview on listview on fragment

click on textview on listview on fragment
TextView On category_row.xml textViewCategoryName
onclick SetText this textViewCategoryName ok!
CategoriesFragment.java
package com.example;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.design.widget.Snackbar;
import android.support.v4.app.Fragment;
import android.support.v4.widget.ContentLoadingProgressBar;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.TextView;
import com.example.adapter.CategoryArrayAdapter;
import com.example.model.CategoryDataModel;
import com.example.parser.JSONParser;
import com.example.utils.Keys;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
public class CategoriesFragment extends Fragment {
private ListView listView;
private ArrayList<CategoryDataModel> list;
private CategoryArrayAdapter adapter;
private TextView categoryCurrent;
public CategoriesFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); }
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_categories, null);
return rootView;
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
/**
* Array List for Binding Data from JSON to this List
*/
list = new ArrayList<>();
adapter = new CategoryArrayAdapter(getActivity(), list);
/**
* Getting List and Setting List Adapter
*/
listView = (ListView) getActivity().findViewById(R.id.listView);
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Snackbar.make(getActivity().findViewById(R.id.parentLayout), list.get(position).getCategoryName(), Snackbar.LENGTH_LONG).show();
}
});
/**
* Check internet connection
*/
//if (InternetConnection.checkConnection(getApplicationContext())) {
new GetDataCategories().execute();
//} else {
//Snackbar.make(getActivity().findViewById(R.id.parentLayout), "اتصال به اینترنت برقرار نیست", Snackbar.LENGTH_LONG).show();
//}
}
/**
* Creating Get Data Task for Getting Data From Web
*/
class GetDataCategories extends AsyncTask<Void, Void, Void> {
ContentLoadingProgressBar progressBar;
#Override
protected void onPreExecute() {
super.onPreExecute();
/**
* Progress Bar for User Interaction
*/
progressBar = (ContentLoadingProgressBar) getActivity().findViewById(R.id.progress);
progressBar.show();
}
#Nullable
#Override
protected Void doInBackground(Void... params) {
/**
* Getting JSON Object from Web Using okHttp
*/
JSONObject jsonObject = JSONParser.getDataFromWeb("http://example.com/api-service/v1/platform_categories/");
try {
/**
* Check Whether Its NULL???
*/
if (jsonObject != null) {
/**
* Check Length...
*/
if(jsonObject.length() > 0) {
/**
* Getting Array named "Categories" From MAIN Json Object
*/
JSONArray array = jsonObject.getJSONArray(Keys.KEY_CATEGORIES);
/**
* Check Length of Array...
*/
int lenArray = array.length();
if(lenArray > 0) {
for(int jIndex = 0; jIndex < lenArray; jIndex++) {
/**
* Creating Every time New Object
* and
* Adding into List
*/
CategoryDataModel model = new CategoryDataModel();
/**
* Getting Inner Object from contacts array...
* and
* From that We will get Name of that Contact
*
*/
JSONObject innerObject = array.getJSONObject(jIndex);
String category_name = innerObject.getString(Keys.KEY_CATEGORY_NAME);
String category_link = innerObject.getString(Keys.KEY_CATEGORY_LINK);
/**
* Getting Object from Object "other"
*/
//JSONObject otherObject = innerObject.getJSONObject(Keys.KEY_NAME);
//String other = otherObject.getString(Keys.KEY_NAME_SUB);
model.setCategoryName(category_name);
model.setCategoryLink(category_link);
/**
* Adding data in List...
*/
list.add(model);
}
}
}
} else {
}
} catch (JSONException je) {
Log.i(JSONParser.TAG, "" + je.getLocalizedMessage());
}
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
/**
* Progress Bar for User Interaction
*/
progressBar.hide();
/**
* Checking if List size if more than zero then
* Update ListView
*/
if(list.size() > 0) {
adapter.notifyDataSetChanged();
} else {
Snackbar.make(getActivity().findViewById(R.id.parentLayout), "مشکلی در اتصال به سرورهای سخنک رخ داده است!", Snackbar.LENGTH_LONG).show();
}
}
}
}
CategoryArrayAdapter.java
package com.example.adapter;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.example.R;
import com.example.model.CategoryDataModel;
import java.util.List;
public class CategoryArrayAdapter extends ArrayAdapter<CategoryDataModel> {
List<CategoryDataModel> modelList;
Context context;
private LayoutInflater mInflater;
// Constructors
public CategoryArrayAdapter(Context context, List<CategoryDataModel> objects) {
super(context, 0, objects);
this.context = context;
this.mInflater = LayoutInflater.from(context);
modelList = objects;
}
#Override
public CategoryDataModel getItem(int position) {
return modelList.get(position);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
final ViewHolder vh;
if (convertView == null) {
View view = mInflater.inflate(R.layout.category_row, parent, false);
vh = ViewHolder.create((RelativeLayout) view);
view.setTag(vh);
} else {
vh = (ViewHolder) convertView.getTag();
}
CategoryDataModel item = getItem(position);
vh.textViewCategoryName.setText(item.getCategoryName());
return vh.rootView;
}
private static class ViewHolder {
public final RelativeLayout rootView;
public final TextView textViewCategoryName;
private ViewHolder(RelativeLayout rootView, TextView textViewCategoryName) {
this.rootView = rootView;
this.textViewCategoryName = textViewCategoryName;
}
public static ViewHolder create(RelativeLayout rootView) {
TextView textViewCategoryName = (TextView) rootView.findViewById(R.id.textViewCategoryName);
return new ViewHolder(rootView, textViewCategoryName);
}
}
}
fragment_categories.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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:id="#+id/parentLayout"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity">
<android.support.v4.widget.ContentLoadingProgressBar
android:id="#+id/progress"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:visibility="visible" />
<ListView app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:id="#+id/listView"
android:layout_width="fill_parent"
android:layout_height="match_parent" />
</android.support.design.widget.CoordinatorLayout>
category_row.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="wrap_content"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_centerVertical="true"
android:layout_height="wrap_content"
android:layout_toLeftOf="#+id/imageViewProfilePhoto">
<TextView
android:id="#+id/textViewCategoryName"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:textAppearance="?android:textAppearanceSmall"
android:textIsSelectable="true"
tools:text="Quote Content" />
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="right"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
</LinearLayout>
</LinearLayout>
</RelativeLayout>

You have to set an onClickListener to your TextView in your ViewHolder.
private static class ViewHolder {
public final RelativeLayout rootView;
public final TextView textViewCategoryName;
private ViewHolder(RelativeLayout rootView, TextView textViewCategoryName) {
this.rootView = rootView;
this.textViewCategoryName = textViewCategoryName;
}
public static ViewHolder create(RelativeLayout rootView) {
TextView textViewCategoryName = (TextView) rootView.findViewById(R.id.textViewCategoryName);
textViewCategoryName.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Do whatever you want
}
});
return new ViewHolder(rootView, textViewCategoryName);
}
}