Develop Reference

recyclerview item click listener with sqlite java

I would like to get data from the box which click on on the recycler view to go into a another activity to display.
I have tried to flow this video https://www.youtube.com/watch?v=7GPUpvcU1FE&t=399s&ab_channel=PracticalCoding i dont understand at 6:16.
Also https://www.youtube.com/watch?v=VQKq9RHMS_0&ab_channel=Stevdza-San i cannot get the data to pass to the new activity.
Main code
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_staff_home);
DB=new mainTextDBHelper(this);
recyclerView=findViewById(R.id.recyclerview);
Title=new ArrayList<>();
description=new ArrayList<>();
radiogroup=new ArrayList<>();
adapter=new recyclerviewAdapter(this,Title,description,radiogroup,listener);
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
displaydata();
setOnClickListner();
private void setOnClickListner() {
listener=new recyclerviewAdapter.RecyclerViewClickListener() {
#Override
public void onClick(View v, int position) {
Intent intent=new Intent(getApplicationContext(),cardviewclickon.class);
intent.putExtra("Title",Title.get(position));
startActivity(intent);
}
};
}
private void displaydata() {
Cursor cursor=DB.getdata();
if(cursor.getCount()==0){
Toast.makeText(staff_home.this,"No Entry Exists", Toast.LENGTH_SHORT).show();
return;
}else{
while(cursor.moveToNext())
{
Title.add(cursor.getString(1));
description.add(cursor.getString(2));
radiogroup.add(cursor.getString(3));
}
}
}
recyclerview Adapter code
public class recyclerviewAdapter extends RecyclerView.Adapter<recyclerviewAdapter.MyViewHolder>{
private Context context;
private ArrayList Title_id,description_id,radiogroup_id;
private RecyclerViewClickListener listener;
public recyclerviewAdapter(Context context, ArrayList title_id, ArrayList description_id, ArrayList radiogroup_id,RecyclerViewClickListener listener) {
this.context = context;
Title_id = title_id;
this.description_id = description_id;
this.radiogroup_id = radiogroup_id;
this.listener=listener;
}
#NonNull
#Override
public recyclerviewAdapter.MyViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View v = LayoutInflater.from(context).inflate(R.layout.userentry,parent,false);
return new MyViewHolder(v);
}
#Override
public void onBindViewHolder(#NonNull recyclerviewAdapter.MyViewHolder holder, int position) {
holder.Title_id.setText(String.valueOf(Title_id.get(position)));
holder.description_id.setText(String.valueOf(description_id.get(position)));
holder.radiogroup_id.setText(String.valueOf(radiogroup_id.get(position)));
holder.cardView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent=new Intent(context,cardviewclickon.class);
context.startActivity(intent);
}
});
}
#Override
public int getItemCount() {
return Title_id.size();
}
public class MyViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener{
TextView Title_id,description_id,radiogroup_id;
CardView cardView;
public MyViewHolder(#NonNull View itemView) {
super(itemView);
Title_id=itemView.findViewById(R.id.textTitle);
description_id=itemView.findViewById(R.id.textdescription);
radiogroup_id=itemView.findViewById(R.id.textsrverity);
cardView=itemView.findViewById(R.id.card);
new View.OnClickListener() {
#Override
public void onClick(View view) {
listener.onClick(view,getAdapterPosition());
}
};
}
#Override
public void onClick(View view) {
listener.onClick(view,getAdapterPosition());
}
}
public interface RecyclerViewClickListener{
void onClick(View v,int position);
}
}

If you want to pass data from one activity to other you can use PutExtra() method of the Intent class As I can see you are doing everything pretty much well but you have to catch these extra from the class you are passing like:- I want to pass data from recyclerView to CardViewClass I can do it like:-
In RecyclerView.java file:-
public void sendDataAndOpen(String title) {
Intent intent = new Intent(getApplicationContext(), CardViewClass.class);
intent.putExtraString("Title",Title); // You can use putExtra to put any datatype
startActivity(intent);
}
In CardViewClass.java file (Lets catch our passing data):-
public void onCreate(...) {
....
String title = getIntent().getExtraString("Title") // You can also use ExtraPut and // Must use Same Id
// Use data as you want
.....
}

Trying to call method from MainActivity in Another Activity it is me leading to error

I have Recycler ListView which I show in MainActivity and the first item it is as selected, I have done to click for another items but the last stays clicked and when I try to take this recycler view to show me in next Activity it doesn't work.
The first item it is selected but I have a click method which when click an image makes as selected but when I click a new image this works but the first item stays as selected so continues for others images. I want only a image to be selected.
I don't want to write twice the same code.
Is it good if I have a class only for this method which I can use everytime I want.
The id of recycler view list it is the same on both xml's.
If you have any suggestion for my question please let me know.
This is the adapter for the RecyclerView.
public class ListViewAdapter extends RecyclerView.Adapter<ListViewAdapter.ViewHolder>{
private int selectedItem;
private ArrayList<Integer> mImages = new ArrayList<>();
private ArrayList<String> mSearchUrl = new ArrayList<>();
private Context mContext;
public ListViewAdapter(ArrayList<Integer> images, ArrayList<String> SearchUrl, Context context) {
mImages = images;
mContext = context;
mSearchUrl = SearchUrl;
}
#NonNull
#Override
public ViewHolder onCreateViewHolder(#NonNull ViewGroup viewGroup, int i) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.s_engine_item, viewGroup, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull final ViewHolder viewHolder, final int i) {
selectedItem = 0;
if (selectedItem == i) {
viewHolder.image.setBackgroundColor(Color.parseColor("#30000000"));
}
Glide.with(mContext).load(mImages.get(i))
.into(viewHolder.image);
viewHolder.searchUrl.setText(mSearchUrl.get(i));
viewHolder.image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
viewHolder.image.setBackgroundColor(Color.parseColor("#30000000"));
selectedItem = i;
}
});
}
#Override
public int getItemCount() {
return mImages.size();
}
public class ViewHolder extends RecyclerView.ViewHolder{
ImageView image;
TextView searchUrl;
public ViewHolder(#NonNull View itemView) {
super(itemView);
image = itemView.findViewById(R.id.ivEngine);
searchUrl = itemView.findViewById(R.id.ivEngineText);
}
}
}
This is the method in MainActivity.class
public void intSearch() {
mImages.add(R.drawable.s_bing);
mSearchUrl.add("https://www.bing.com/search?q=");
mImages.add(R.drawable.s_google);
mSearchUrl.add("https://www.google.com/search?q=");
mImages.add(R.drawable.s_yahoo);
mSearchUrl.add("www.yahoo.com");
mImages.add(R.drawable.amazon_white256);
mSearchUrl.add("www.amazon.com");
mImages.add(R.drawable.amazon_white256);
mSearchUrl.add("www.amazon.com");
mImages.add(R.drawable.amazon_white256);
mSearchUrl.add("www.amazon.com");
initRecyclerView();
}
private void initRecyclerView() {
LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
RecyclerView recyclerView = findViewById(R.id.lvEngines);
recyclerView.setLayoutManager(layoutManager);
ListViewAdapter adapter = new ListViewAdapter(mImages, mSearchUrl, this);
recyclerView.setAdapter(adapter);
}
This is the button which takes to another activity.
btnSearch.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String newEntry = searchPlugin.getText().toString();
Cursor data = mDatabaseHelper.getData();
AddHistory(newEntry);
getFragmentRefreshListener().onRefresh();
Intent intent = new Intent(MainActivity.this, ActivitySearchEngine.class);
intent.putExtra("name", newEntry);
intent.putExtra("test", mSearchUrl.get(0));
startActivityForResult(intent, 2);
}
});
This is the another activity
public class ActivitySearchEngine extends Activity implements
SwipeRefreshLayout.OnRefreshListener {
public ImageView mHome;
public EditText searchPlugin;
public WebView webView;
Button btnSearch;
public ImageButton clearSearch, exitButton;
public ImageView favIcon;
public ProgressBar loadIcon;
String text;
SwipeRefreshLayout refreshLayout;
DatabaseHelper mDatabaseHelper;
private String selectedName;
private int selectedID;
private String selectedSearchUrl;
RecyclerView mListView;
MainActivity mainActivity = new MainActivity();
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_search_result);
mHome = findViewById(R.id.imgBtnHome);
searchPlugin = findViewById(R.id.etSearch);
webView = findViewById(R.id.webView);
clearSearch = findViewById(R.id.btnClearSearch);
btnSearch = findViewById(R.id.btnSearch);
favIcon = findViewById(R.id.imgViewFavIcon);
loadIcon = findViewById(R.id.progressBarIcon);
exitButton = findViewById(R.id.imgBtnStopLoad);
refreshLayout = findViewById(R.id.refreshLayout);
mListView = findViewById(R.id.lvEngines);
refreshLayout.setOnRefreshListener(this);
mDatabaseHelper = new DatabaseHelper(this);
mainActivity.intSearch(); // Here it is the error
Activity.ActivitySearchEngine}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.Window$Callback android.view.Window.getCallback()' on a null object reference
Intent receivedIntent = getIntent();
selectedName = receivedIntent.getStringExtra("name");
selectedID = receivedIntent.getIntExtra("id",-1); //NOTE: -1 is just the default value
selectedSearchUrl = receivedIntent.getStringExtra("test");
searchPlugin.setText(selectedName);
loadIcon.setVisibility(View.VISIBLE);
webView.setWebViewClient(new WebViewClient());
webView.getSettings().setJavaScriptEnabled(true);
webView.loadUrl("www.bing.com/search?=" + selectedName);
webView.setWebChromeClient(new WebChromeClient() {
#Override
public void onProgressChanged(WebView view, int newProgress) {
super.onProgressChanged(view, newProgress);
}
#Override
public void onReceivedIcon(WebView view, Bitmap icon) {
super.onReceivedIcon(view, icon);
favIcon.setImageBitmap(icon);
}
});
webView.setWebViewClient(new WebViewClient() {
#Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
super.onPageStarted(view, url, favicon);
loadIcon.setVisibility(View.VISIBLE);
favIcon.setVisibility(View.GONE);
}
public void onPageFinished(WebView view, String url) {
try {
if (loadIcon.getVisibility() == View.VISIBLE) {
loadIcon.setVisibility(View.GONE);
favIcon.setVisibility(View.VISIBLE);
btnSearch.setVisibility(View.GONE);
mHome.setVisibility(View.VISIBLE);
exitButton.setVisibility(View.GONE);
clearSearch.setVisibility(View.VISIBLE);
favIcon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
onRefresh();
}
});
}
} catch (Exception exception) {
exception.printStackTrace();
}
}
});
searchPlugin.addTextChangedListener(new TextWatcher() {
#Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
#Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
#Override
public void afterTextChanged(Editable s) {
processButtonByTextLength();
}
});
mHome.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
searchPlugin.setText(null);
finish();
}
});
clearSearch.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
searchPlugin.setText("");
}
});
public void processButtonByTextLength() {
String inputText = searchPlugin.getText().toString();
if(inputText.length() > 0) {
btnSearch.setVisibility(View.VISIBLE);
mHome.setVisibility(View.GONE);
clearSearch.setVisibility(View.VISIBLE);
favIcon.setVisibility(View.VISIBLE);
loadIcon.setVisibility(View.GONE);
exitButton.setVisibility(View.GONE);
} else if(inputText.length() == 0) {
btnSearch.setVisibility(View.GONE);
mHome.setVisibility(View.VISIBLE);
clearSearch.setVisibility(View.GONE);
}
}
#Override
public void onRefresh() {
webView.reload();
refreshLayout.setRefreshing(false);
}
}
This is the photo with RecyclerView at MainActivity.class
Photo of another Activity

Android: optimizing fragment transitions

So in my app I have a bunch of fragments that the user navigates through. And there are a lot of methods in my activity class that are used for fragment transitions. These are very similar to each other with the only difference being the class of the newFragment. Here is one these methods:
public void onHelpSelected() {
slideInRight();
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
HelpFragment newFragment = new HelpFragment();
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.fragment_container, newFragment);
transaction.addToBackStack(null);
transaction.commit();
slideOutLeft();
}
}, 500);
}
Then, I also have a few classes that describe each fragment. These are also very similar to each other: they differ only by the amount of buttons and by what these buttons do (but most of the buttons are used for fragment transitions). Here is one of these classes:
public class AuthFragment extends Fragment {
Button authRegButton;
Button authHelpButton;
OnHelpButtonListener helpCallback;
OnRegButtonListener regCallback;
#Override
public View onCreateView (LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_auth, container, false);
authHelpButton = (Button) view.findViewById(R.id.auth_help_button);
View.OnClickListener authHelpListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
helpCallback.onHelpSelected();
}
};
authHelpButton.setOnClickListener(authHelpListener);
authRegButton = (Button) view.findViewById(R.id.auth_reg_button);
View.OnClickListener authRegListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
regCallback.onRegSelected();
}
};
authRegButton.setOnClickListener(authRegListener);
return view;
}
public interface OnHelpButtonListener {
void onHelpSelected();
}
public interface OnRegButtonListener {
void onRegSelected();
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
try {
helpCallback = (OnHelpButtonListener) context;
} catch (ClassCastException e) {
throw new ClassCastException(context.toString()
+ " must implement OnHelpButtonListener");
}
try {
regCallback = (OnRegButtonListener) context;
} catch (ClassCastException e) {
throw new ClassCastException(context.toString()
+ " must implement OnRegButtonListener");
}
}
}
So, I have many pieces of code that are very similar. I bet there is a way to make all this code look much nicer and work more efficiently.
Thus, my question is how do I do that? :)
Thanks!

Here is how I solved this problem, if someone ever needs this :)
So I made an abstract class for my fragments and worked out all the code there:
public abstract class LoginFragment extends Fragment {
MediaPlayer clickPlayer;
int layoutId;
View view;
OnButtonListener buttonCallback;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
view = inflater.inflate(layoutId, container, false);
return view;
}
public interface OnButtonListener {
void onButtonSelected(LoginFragment fragment);
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
try {
buttonCallback = (OnButtonListener) context;
} catch (ClassCastException e) {
throw new ClassCastException(context.toString()
+ " must implement OnButtonListener");
}
}
public MyButton setUpButton(int buttonId) {
final MyButton button = (MyButton) view.findViewById(buttonId);
View.OnClickListener authHelpListener = new View.OnClickListener() {
#Override
public void onClick(View v) {
clickPlayer = MediaPlayer.create(getContext(), R.raw.click);
clickPlayer.start();
LoginFragment newFragment = determineFragment(button);
buttonCallback.onButtonSelected(newFragment);
}
};
button.setOnClickListener(authHelpListener);
return button;
}
public LoginFragment determineFragment(MyButton button) {
LoginFragment result;
int buttonId = button.getId();
switch (buttonId){
case R.id.auth_help_button:
result = new HelpFragment();
break;
case R.id.agr_cancel_button:case R.id.help_cancel_button:
case R.id.reg_cancel_button:case R.id.reg_cont_cancel_button:
result = new AuthFragment();
break;
case R.id.agr_back_button:case R.id.reg_cont_button:
result = new RegContFragment();
break;
case R.id.reg_cont_agr_button:
result = new AgrFragment();
break;
case R.id.auth_reg_button:
result = new RegFragment();
break;
default:
result = null;
break;
}
return result;
}

I am getting this strange error on in onAttach(Context)

In onAttach function eclipse shows error stating
The method onAttach(Activity) in the type Fragment is not applicable
for the arguments (Context)
although it is clearly Context type variable passed
import android.content.Context;
public class MyListFragment extends Fragment{
private OnItemSelectedListener listener;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_rsslist_overview,
container, false);
Button button = (Button) view.findViewById(R.id.button1);
button.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
updateDetail("fake");
}
});
return view;
}
public interface OnItemSelectedListener {
public void onRssItemSelected(String link);
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
if (context instanceof OnItemSelectedListener) {
listener = (OnItemSelectedListener) context;
} else {
throw new ClassCastException(context.toString()
+ " must implemenet MyListFragment.OnItemSelectedListener");
}
}
#Override
public void onDetach() {
super.onDetach();
listener = null;
}
// may also be triggered from the Activity
public void updateDetail(String uri) {
// create a string just for testing
String newTime = String.valueOf(System.currentTimeMillis());
// inform the Activity about the change based
// interface defintion
listener.onRssItemSelected(newTime);
}
}

If you are using API < 23 then
public void onAttach(Context context) {
should be
public void onAttach(Activity context) {
See official docs
Note:
onAttach(Context context) was added in api 23. See this

I had same problem can you try to pass Activity in your onAtach method like this:
#Override
public void onAttach(Activity activity) {
super.onAttach(context);
if (context instanceof OnItemSelectedListener) {
listener = (OnItemSelectedListener) activity;
} else {
throw new ClassCastException(context.toString()
+ " must implemenet MyListFragment.OnItemSelectedListener");
}
}
and tell me if it works or not.
Hope to help!

Getting indexOutOfBoundsException while trying to fetch data from parse

I am trying to fetch some data from parse, but my app is getting crashed every time due to this error: java.lang.IndexOutOfBoundsException: Invalid index 1, size is 0 at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:255) at java.util.ArrayList.get(ArrayList.java:308) at com.abc.xyz.AcceptARequest$1$1.done(AcceptARequest.java:157)
Here's AcceptARequest.java(in which I'm fetching data from parse) file's code :
public class AcceptARequest extends Fragment{
private OnFragmentInteractionListener mListener;
public List<ListContentAAR> listContentAARs;
public RecyclerView recyclerView;
ImageView hPicAccept;
TextView hDescriptionAccept, currentCoordinatesTagAccept, currentLatAccept, currentLngAccept, post_date, post_time, posted_by;
String hDescriptionAcceptS, currentCoordinatesTagAcceptS, currentLatAcceptS, currentLngAcceptS, post_dateS, post_timeS, posted_byS;
Button btn_accept, btn_share;
LinearLayout latContainerAccept, lngContainerAccept, dateTimeContainer;
ParseQuery<ParseObject> query;
String hDescription, cLat, cLng;
public AcceptARequest() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (getArguments() != null) {
mParam1 = getArguments().getString(ARG_PARAM1);
mParam2 = getArguments().getString(ARG_PARAM2);
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_accept_a_request, container, false);
listContentAARs = new ArrayList<>();
hPicAccept = (ImageView) rootView.findViewById(R.id.h_pic_accept);
hDescriptionAccept = (TextView) rootView.findViewById(R.id.h_description_accept);
currentCoordinatesTagAccept = (TextView) rootView.findViewById(R.id.currentCoordinatesTagAccept);
currentLatAccept = (TextView) rootView.findViewById(R.id.currentLatAccept);
currentLngAccept = (TextView) rootView.findViewById(R.id.currentLngAccept);
btn_accept = (Button) rootView.findViewById(R.id.btn_accept);
btn_share = (Button) rootView.findViewById(R.id.btn_share);
latContainerAccept = (LinearLayout) rootView.findViewById(R.id.latContainerAccept);
lngContainerAccept = (LinearLayout) rootView.findViewById(R.id.lngContainerAccept);
dateTimeContainer = (LinearLayout) rootView.findViewById(R.id.date_time_container);
post_date = (TextView) rootView.findViewById(R.id.post_date);
post_time = (TextView) rootView.findViewById(R.id.post_time);
posted_by = (TextView) rootView.findViewById(R.id.posted_by);
hDescriptionAcceptS = hDescriptionAccept.getText().toString();
currentCoordinatesTagAcceptS = currentCoordinatesTagAccept.getText().toString();
currentLatAcceptS = currentLatAccept.getText().toString();
currentLngAcceptS = currentLngAccept.getText().toString();
post_dateS = post_date.getText().toString();
post_timeS = post_time.getText().toString();
posted_byS = posted_by.getText().toString();
currentCoordinatesTagAccept.setVisibility(View.INVISIBLE);
currentLatAccept.setVisibility(View.INVISIBLE);
currentLngAccept.setVisibility(View.INVISIBLE);
latContainerAccept.setVisibility(View.INVISIBLE);
lngContainerAccept.setVisibility(View.INVISIBLE);
final Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
query = ParseQuery.getQuery("HomelessDetails");
query.whereEqualTo("objectId", ParseUser.getCurrentUser().getObjectId());
query.addDescendingOrder("createdAt");
query.findInBackground(new FindCallback<ParseObject>() {
#Override
public void done(List<ParseObject> list, ParseException e) {
if (e == null) {
currentCoordinatesTagAccept.setVisibility(View.VISIBLE);
currentLatAccept.setVisibility(View.VISIBLE);
currentLngAccept.setVisibility(View.VISIBLE);
latContainerAccept.setVisibility(View.VISIBLE);
lngContainerAccept.setVisibility(View.VISIBLE);
hDescriptionAcceptS = list.get(1).getString("hDescription");
hDescriptionAccept.setText(hDescriptionAcceptS);
currentLatAcceptS = list.get(1).getString("hLatitude");
currentLatAccept.setText(currentLatAcceptS);
currentLngAcceptS = list.get(1).getString("hLongitude");
currentLngAccept.setText(currentLngAcceptS);
} else {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage(e.getMessage());
builder.setPositiveButton(android.R.string.ok, null);
AlertDialog dialog = builder.create();
dialog.show();
}
}
});
}
}, 1000);
recyclerView = (RecyclerView) rootView.findViewById(R.id.accept_request_list);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity());
recyclerView.setLayoutManager(linearLayoutManager);
recyclerView.setHasFixedSize(true);
recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() {
#Override
public void onClick(View view, int position) {
Button btnAccept = (Button) view.findViewById(R.id.btn_accept);
btnAccept.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
builder.setMessage(R.string.request_accepted_txt);
builder.setPositiveButton("Navigate me", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(getActivity(), "Navigating you to the needy...", Toast.LENGTH_LONG).show();
}
});
builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(getActivity(), "The help-request has been rejected.", Toast.LENGTH_LONG).show();
}
});
AlertDialog dialog = builder.create();
dialog.show();
}
});
Button btnShare = (Button) view.findViewById(R.id.btn_share);
btnShare.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// share the help-request here.
}
});
}
#Override
public void onLongClick(View view, int position) {
}
}));
initializeAdapter();
return rootView;
}
private void initializeAdapter(){
RVAdapterAAR adapter = new RVAdapterAAR(listContentAARs);
recyclerView.setAdapter(adapter);
}
// TODO: Rename method, update argument and hook method into UI event
public void onButtonPressed(Uri uri) {
if (mListener != null) {
mListener.onFragmentInteraction(uri);
}
}
public void itemClicked(View view, int position) {
}
class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final 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));
}
super.onLongPress(e);
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child, rv.getChildPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
}
public static interface ClickListener {
public void onClick(View view, int position);
public void onLongClick(View view, int position);
}
#Override
public void onDetach() {
super.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);
}
}
I don't know what's going wrong here.
Please let me know.
Please cooperate if question seems to be badly formatted, I'm still learning to post good questions.

You are trying to access the ArrayList which does not have any element in it. SO list.get(1) won't work.
Make sure that your ArrayList is getting populated correctly.

#Hammad:
The error that you are getting is because of the array list that you are using does not contain any elements/objects in it.
You need to populate the arraylist using list.Add()(or based on your preference) method.