Android RecyclerView with Single and Multiple Selection

 

Android getting value from selected radio button

• Single Selection in Android Recycler View
• 
  
  
  
• Problem was: Unable to get each radio button values in array showing bug, Finally below approach worked on it, Sharing code:
• MAKE RecyclerViewAdapter class

public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    private static final int TYPE_TRACE = 1;
    private static final int TYPE_OBSER = 2;
    Context context;
    public List<GetDataAdapter> getDataAdapter;

    public RecyclerViewAdapter(List<GetDataAdapter> getDataAdapter, Context context) {
        super();

        this.getDataAdapter = getDataAdapter;
        this.context = context;
    }

    @NonNull
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) {
        View view;

        view = LayoutInflater.from(context).inflate(R.layout.survey_check_diseases, viewGroup, false);
        return new EmailViewHolder(view);

    }


    @Override
    public int getItemViewType(int position) {

        return TYPE_OBSER;

    }

    @SuppressLint("SetTextI18n")
    @Override
    public void onBindViewHolder(@NonNull RecyclerView.ViewHolder holder, final int position) {


        ((EmailViewHolder) holder).setEmailDetails(getDataAdapter.get(position));


        if (position % 2 == 0) {
            holder.itemView.setBackgroundColor(0x80E0EEEE);
        } else {
            holder.itemView.setBackgroundColor(0XFFFFFF);
        }


    }


    @Override
    public int getItemCount() {
        return getDataAdapter.size();
    }

    class CallViewHolder extends RecyclerView.ViewHolder {

        TextView f, s, t, senglish;

        CallViewHolder(@NonNull View itemView) {
            super(itemView);
            f = (TextView) itemView.findViewById(R.id.f);
            s = (TextView) itemView.findViewById(R.id.s);
            t = (TextView) itemView.findViewById(R.id.t);
            senglish = (TextView) itemView.findViewById(R.id.senglish);

        }

    }


    class EmailViewHolder extends RecyclerView.ViewHolder {

        public TextView f, s, t, senglish;
        //   public CheckBox ok,nok,na;
        private RadioGroup rdGroup;
        RadioButton ok, nok, na;

        EmailViewHolder(@NonNull View itemView) {
            super(itemView);
            f = (TextView) itemView.findViewById(R.id.f);
            s = (TextView) itemView.findViewById(R.id.s);
            senglish = (TextView) itemView.findViewById(R.id.senglish);

            ok = (RadioButton) itemView.findViewById(R.id.ok);
            nok = (RadioButton) itemView.findViewById(R.id.nok);
            //   na = (RadioButton) itemView.findViewById(R.id.na);

            rdGroup = (RadioGroup) itemView.findViewById(R.id.rdGroup);

     /*      rdGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
                @Override
                public void onCheckedChanged(RadioGroup group, int checkedId) {
                    int selectedId = rdGroup.getCheckedRadioButtonId();
                    RadioButton      yesnoradioButton = (RadioButton)itemView. findViewById(selectedId);
                    if(selectedId==-1){
                        Toast.makeText(context,"Nothing selected", Toast.LENGTH_SHORT).show();
                        yesnoradioButton.setChecked(false);

                    }
                    else{

                        yesnoradioButton.setChecked(true);

                      //  Toast.makeText(context,yesnoradioButton.getText(), Toast.LENGTH_SHORT).show();
                    }
                }
            });*/

        }

        void setEmailDetails(GetDataAdapter getDataAdapter1) {

            if (getDataAdapter1.getFinalize_flag().equalsIgnoreCase("UPDATE")) {

                //     Toast.makeText(context, getDataAdapter1.getCODE()+ok.getText(), Toast.LENGTH_SHORT).show();
                //    getDataAdapter1.setSelected(!getDataAdapter1.getSelected());
                if (getDataAdapter1.getEntry_by().equalsIgnoreCase("Y")) {  ////FLAG HAI YAH -YES OR NO
                    f.setText(getDataAdapter1.getDIS_ID());
                    senglish.setText(getDataAdapter1.getDIS_NAMES());
                    ok.setChecked(true);
                    nok.setChecked(false);
                } else {
                    ok.setChecked(false);
                    nok.setChecked(true);
                    f.setText(getDataAdapter1.getDIS_ID());
                    senglish.setText(getDataAdapter1.getDIS_NAMES());
                }
                ok.setTag(getDataAdapter1);

////here is the logic,it will show lists with the inserted values in database as selected while others

non selected then we will need to update and select options as per our's wishes

                ok.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
                    {
                        getDataAdapter1.setSelected(isChecked);
                        rdGroup.check(getDataAdapter1.getSelctedId());
                        rdGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
                        {
                            public void onCheckedChanged(RadioGroup group, int checkedId)
                            {
                                getDataAdapter1.setSelctedId(checkedId);
                            }
                        });

                    }
                });
                nok.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                       getDataAdapter1.setSelected(false);
                        //    Toast.makeText(context, getDataAdapter1.getDIS_ID(), Toast.LENGTH_SHORT).show();


                    }
                });



           /*     ok.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        getDataAdapter1.setSelected(true);



                    }
                });*/

            } else if (getDataAdapter1.getFinalize_flag().equalsIgnoreCase("SUBMIT")) {

                f.setText(getDataAdapter1.getDIS_ID());
                senglish.setText(getDataAdapter1.getDIS_NAME());
                //  s.setText(getDataAdapter1.getDESC_HINDI());


                ok.setOnCheckedChangeListener(null);
                ok.setChecked(getDataAdapter1.getSelected());
                ok.setTag(getDataAdapter1);


                ok.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        getDataAdapter1.setSelected(true);

                        //     Toast.makeText(context, getDataAdapter1.getCODE()+ok.getText(), Toast.LENGTH_SHORT).show();
                        //    getDataAdapter1.setSelected(!getDataAdapter1.getSelected());

                    }
                });

            }


        }
    }
}

UPDATE CLASS:

btnnext = (Button) findViewById(R.id.next);//on click collect values and use your code to update the

database


btnnext.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        JSONArray Obserlists = null;
        Obserlists = new JSONArray();

        String flag = null;
        for (int i = 0; i < GetDataAdapter3.size(); i++) {
            Log.d("tracevalues1-", ":" + GetDataAdapter3.get(i).getEntry_by());

                if(GetDataAdapter3.get(i).getSelctedId() == R.id.ok ){

                    flag = "Y";
                //    Toast.makeText(updateSurvey.this, flag, Toast.LENGTH_SHORT).show();
                    Log.d("tracevalues11-", ":" +flag);//GetDataAdapter3.get(i).getEntry_by()
                }
                else if (GetDataAdapter3.get(i).getSelctedId() == R.id.nok){
                    flag = "N";
                 //   Toast.makeText(updateSurvey.this, flag, Toast.LENGTH_SHORT).show();
                    Log.d("tracevalues11-", ":" +flag);



                }


            JSONObject Obserlist = new JSONObject();
            JSONObject ObserlistF = new JSONObject();
            try {

                Obserlist.put("obserFlag", flag);
                Obserlist.put("traceValue", GetDataAdapter3.get(i).getDIS_ID());

                Log.d("tracevalues11-", "onClick: " + GetDataAdapter3.get(i).getDIS_ID());

                if (GetDataAdapter3.get(i).getSelected()) {
                    ObserlistF.put("traceValue", GetDataAdapter3.get(i).getDIS_ID());
                    Obserlists.put(ObserlistF);

                    Log.d("tracevalues111-", "onClick: " +GetDataAdapter3.get(i).getDIS_ID());
                }

            } catch (JSONException e) {
                e.printStackTrace();
                System.out.println("Error:" + e);
            }


        }
        Log.d("tracevalues1111-", "onClick: " + Obserlists);///tracevalues11-: onClick: [{"obserFlag":"Y","obserCode":"1"},{"obserFlag":"Y","obserCode":"3"}]

     // SubmitData(EMPNO, Obserlists);
    }
});