Qfyilyi

I have a model class:

public class Home_Model_ViewPager {





public String buttonLink;

public String tipsDescription;

public String tipsButton;

public Context context;



public Home_Model_ViewPager( Context context, String tipsDescription, String tipsButton, String buttonLink) {

    this.context = context;

    this.tipsDescription = tipsDescription;

    this.tipsButton = tipsButton;

    this.buttonLink = buttonLink;

}



public String getButtonLink() {

    return buttonLink;

}



public void setButtonLink(String buttonLink) {

    this.buttonLink = buttonLink;

}



public String getTipsDescription() {

    return tipsDescription;

}



public void setTipsDescription(String tipsDescription) {

    this.tipsDescription = tipsDescription;

}



public String getTipsButton() {

    return tipsButton;

}



public void setTipsButton(String tipsButton) {

    this.tipsButton = tipsButton;

}

}

I have used this model class to use it in viewpager adapter.

So, I am using a recyclerview and setting data to it. Now I have a problem that I have a viewpager in recycleritem. I want to return the size of viewpager adapter of any element in Home_Model_ViewPager as each element has diff size.

This is what I tried in ViewPagerAdapter:

    public class ViewPagerAdapter extends PagerAdapter {

    // Declare Variables

    Context context;

    LayoutInflater inflater;

    List<Home_Model_ViewPager> totalList;



    public ViewPagerAdapter(Context context, List<Home_Model_ViewPager> totalList) {

        this.context = context;

        this.totalList = totalList;



        inflater = (LayoutInflater) context

                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    }



    @Override

    public int getCount() {

        return totalList.size();

    }



    @Override

    public boolean isViewFromObject(View view, Object object) {

        return view == object;

    }



    @Override

    public Object instantiateItem(ViewGroup container, final int position) {



        // Declare Variables

        TextView tricksDescription;

        Button tricksButton;



        View itemView = inflater.inflate(R.layout.viewpager_item, container,

                false);



        tricksDescription =  itemView.findViewById(R.id.xtv_tricks_description);

        tricksButton = itemView.findViewById(R.id.tricks_button);



        tricksDescription.setText(Html.fromHtml(totalList.get(position).getTipsDescription()));

        tricksButton.setText(Html.fromHtml(totalList.get(position).getTipsButton()));

        tricksButton.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

                try {

                    Intent intent = new Intent(Intent.ACTION_VIEW);

                    String url = totalList.get(position).getButtonLink();

                    intent.setData(Uri.parse(url));

                    startActivity(intent);

                }

                catch (Exception e) {

                    e.printStackTrace();

                }

            }

        });

         container.addView(itemView);



        return itemView;

    }



    @Override

    public void destroyItem(ViewGroup container, int position, Object object) {

        View view = (View) object;

        container.removeView(view);



    }

}

I am using volley to get the values as JSON..

 private void Home() {

    try {

        if (getActivity()!=null)

            Commonfunctions.LoadPreferences(getActivity());

        System.out.println("Authtoken:" + Commonfunctions.Token_key);

        appservice.View_All_Events(Commonfunctions.Token_key, String.valueOf(pagenumber), new Server_Callback() {

            @Override

            public void onSuccess(String response) {

                System.out.println("HOME Response :" + response);

                try {

                    JSONObject signObject = new JSONObject(response);



                    String resStatus = signObject.getString(AppConstants.STATUS);

                    String resCode = signObject.getString(AppConstants.CODE);

                    String resMsg = signObject.getString(AppConstants.MSG);



                    if (resCode.equals(AppConstants.SUCCESS_CODE)) {



                        JSONArray allEvents = signObject.getJSONArray("all");



                        System.out.println("INNER Response :" + allEvents);

                        for (int i = 0; i < allEvents.length(); i++) {

                            JSONObject innerObj1 = allEvents.getJSONObject(i);

                            String backgroundImg = innerObj1.getString("backg_img");

                            String declinedCount = innerObj1.getString("decli_count");

                            String acceptedCount = innerObj1.getString("accep_count");

                            String invitedCount = innerObj1.getString("invi_count");

                            String messages = innerObj1.getString("i_chat");

                            String name = innerObj1.getString("name");

                            String eventTime = innerObj1.getString("duration");

                            String userPhoto = innerObj1.getString("photo");



                            JSONArray viewpagerEvents = innerObj1.getJSONArray("action");

                            for (int u = 0; u < viewpagerEvents.length(); u++) {

                                JSONObject innerObj3 = viewpagerEvents.getJSONObject(u);

                                String buttonText = innerObj3.getString("text");

                                String tipsDesc = innerObj3.getString("action_text");

                                String buttonLink = innerObj3.getString("button_link");

                            final Home_Model home_data = new Home_Model(name, messages,invitedCount,declinedCount,acceptedCount,eventTime,

                                    userPhoto,backgroundImg);

                            data.add(home_data);

                            final Home_Model_ViewPager home_viewpager = new Home_Model_ViewPager(getContext(),tipsDesc,buttonText, buttonLink);

                            viewPagerData.add(home_viewpager);

                            }

                            }

                            adapter = new HomeAdapter(getContext(),data);

                        pagerAdapter = new ViewPagerAdapter(getActivity(), viewPagerData);

                        home_recycler.setAdapter(adapter);

                        adapter.notifyDataSetChanged();



                        if (adapter.getItemCount()==0) {

                            noeventLayout.setVisibility(View.VISIBLE);

                        }

                        else {

                            noeventLayout.setVisibility(View.GONE);

                        }



                    } else if (resCode.equals(AppConstants.UPDATE_CODE)) {

                        //Version_Update versionUpdate=new Version_Update(SignIn.this,response);

                    } else {

                        getActivity().getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);

                        Commonfunctions.showerrorsnackbar(resMsg, getActivity(), parentLayout);

                    }

                } catch (JSONException e) {

                    e.printStackTrace();

                }

            }//on success close



        });//server callback closed

    } catch (Exception e) {

        e.printStackTrace();

    }

}

HomeAdapter:

  class HomeAdapter extends RecyclerView.Adapter<HomeAdapter.ViewHolder> {

    Context context;

    List<Home_Model> students;

    public HomeAdapter(Context context,List<Home_Model> students) {

        this.context = context;

        this.students = students;

    }



    @Override

    public HomeAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {

        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.event_home_list, viewGroup, false);

        return new HomeAdapter.ViewHolder(view);

    }



    @Override

    public void onBindViewHolder(final HomeAdapter.ViewHolder holder, final int position) {

        holder.title.setText(students.get(position).getName());

        holder.invited.setText(students.get(position).getInvited());

        holder.accepted.setText(students.get(position).getAccept());

        holder.declined.setText(students.get(position).getDecline());

        holder.eventTime.setText(students.get(position).getEvent_time());

        holder.messages.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View view) {

            startActivity(new Intent(getActivity(),Chat_view.class));

            }

        });



        holder.viewPager.setAdapter(pagerAdapter);

        holder.dots = new ImageView[holder.dotsCount];

        for (int i = 0; i < holder.dotsCount; i++) {

            holder.dots[i] = new ImageView(context);

            holder.dots[i].setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_dot_gray ));

            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);

            params.setMargins(8, 0, 8, 0);

            holder.sliderDots.addView(holder.dots[i], params);

        }

        holder.dots[0].setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_dot_colorprimary));

        holder.viewPager.addOnPageChangeListener(new ViewPager.OnPageChangeListener() {

            @Override

            public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {

            }



            @Override

            public void onPageSelected(int position) {



                for (int i = 0; i < holder.dotsCount; i++) {

                    holder.dots[i].setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_dot_gray));

                }

                holder.dots[position].setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_dot_colorprimary));





            }



            @Override

            public void onPageScrollStateChanged(int state) {



            }

        });







        if (students.get(position).getMessages().contentEquals("false")) {

        holder.status.setVisibility(View.INVISIBLE);

        }

        else {

        holder.status.setVisibility(View.VISIBLE);

        }

        holder.status.setVisibility(View.INVISIBLE);

        try {

            Glide.with(getActivity()).load(students.get(position).getProimg()).into(holder.pro_img);

            Glide.with(getActivity()).load(students.get(position).getBgimg()).into(holder.card_main);

        } catch (Exception e) {

            e.printStackTrace();

        }



    }



    @Override

    public int getItemCount() {

        return students.size();

    }



    public class ViewHolder extends RecyclerView.ViewHolder {

        TextView title, messages, invited, accepted, declined, eventTime;

        private PorterShapeImageView pro_img;

        ImageView card_main, status;

        ViewPager viewPager;

        LinearLayout sliderDots;

        private ImageView dots;

        private int dotsCount;



        public ViewHolder(View itemView) {

            super(itemView);

            title = itemView.findViewById(R.id.xtv_welcome);

            messages = itemView.findViewById(R.id.xtv_message);

            invited = itemView.findViewById(R.id.xtv_invited);

            accepted = itemView.findViewById(R.id.xtv_accepted);

            declined = itemView.findViewById(R.id.xtv_decline);

            eventTime = itemView.findViewById(R.id.contact_number);

            pro_img = itemView.findViewById(R.id.pro_pic);

            card_main = itemView.findViewById(R.id.card_main);

            status = itemView.findViewById(R.id.incoming_image);

            viewPager = itemView.findViewById(R.id.viewPagerTips);

            sliderDots = itemView.findViewById(R.id.sliderDots);

            dotsCount = pagerAdapter.getCount();



        }

    }

}

Please try to make one different array list for your viewpager's adapter:

ArrayList<Home_Model_ViewPager> tempList = new ArrayList<>();

for(int k=0;k<viewpagerData.size();k++){

        Home_Model_ViewPager object = viewPagerData.get(k);

        if(object.getTripDesc()!=null && object.getTripDesc().length() >0){

            tempList.add(object);

        }

}

ViewPagerAdapter pagerAdapter = new ViewPagerAdapter(getActivity(), tempList);

home_recycler.setAdapter(adapter);

adapter.notifyDataSetChanged();