content: package com.abdeveloper.library;
  
  import android.content.Context;
  import android.content.res.ColorStateList;
  import android.graphics.Typeface;
  import android.support.v4.content.ContextCompat;
  import android.support.v7.widget.AppCompatCheckBox;
  import android.support.v7.widget.RecyclerView;
  import android.text.Spannable;
  import android.text.SpannableString;
  import android.text.style.TextAppearanceSpan;
  import android.view.LayoutInflater;
  import android.view.View;
  import android.view.ViewGroup;
  import android.widget.LinearLayout;
  import android.widget.TextView;
  
  import java.util.ArrayList;
  
  class MutliSelectAdapter extends RecyclerView.Adapter<MutliSelectAdapter.MultiSelectDialogViewHolder> {
  
      private ArrayList<MultiSelectModel> mDataSet = new ArrayList<>();
      private String mSearchQuery = "";
      private Context mContext;
  
      MutliSelectAdapter(ArrayList<MultiSelectModel> dataSet, Context context) {
          this.mDataSet = dataSet;
          this.mContext = context;
      }
  
      @Override
      public MultiSelectDialogViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
          View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.multi_select_item, parent, false);
          return new MultiSelectDialogViewHolder(view);
      }
  
      @Override
      public void onBindViewHolder(final MultiSelectDialogViewHolder holder, int position) {
  
          if (!mSearchQuery.equals("") && mSearchQuery.length() > 1) {
              setHighlightedText(position, holder.dialog_name_item);
          } else {
              holder.dialog_name_item.setText(mDataSet.get(position).getName());
          }
  
          if (mDataSet.get(position).getSelected()) {
  
              if (!MultiSelectDialog.selectedIdsForCallback.contains(mDataSet.get(position).getId())) {
                  MultiSelectDialog.selectedIdsForCallback.add(mDataSet.get(position).getId());
              }
          }
  
          if (checkForSelection(mDataSet.get(position).getId())) {
              holder.dialog_item_checkbox.setChecked(true);
          } else {
              holder.dialog_item_checkbox.setChecked(false);
          }
  
          /*holder.dialog_item_checkbox.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
  
                  if (holder.dialog_item_checkbox.isChecked()) {
                      MultiSelectDialog.selectedIdsForCallback.add(mDataSet.get(holder.getAdapterPosition()).getId());
                      holder.dialog_item_checkbox.setChecked(true);
                  } else {
                      removeFromSelection(mDataSet.get(holder.getAdapterPosition()).getId());
                      holder.dialog_item_checkbox.setChecked(false);
                  }
              }
          });*/
  
  
          holder.main_container.setOnClickListener(new View.OnClickListener() {
              @Override
              public void onClick(View view) {
                  if (!holder.dialog_item_checkbox.isChecked()) {
                      MultiSelectDialog.selectedIdsForCallback.add(mDataSet.get(holder.getAdapterPosition()).getId());
                      holder.dialog_item_checkbox.setChecked(true);
                      mDataSet.get(holder.getAdapterPosition()).setSelected(true);
                      notifyItemChanged(holder.getAdapterPosition());
                  } else {
                      removeFromSelection(mDataSet.get(holder.getAdapterPosition()).getId());
                      holder.dialog_item_checkbox.setChecked(false);
                      mDataSet.get(holder.getAdapterPosition()).setSelected(false);
                      notifyItemChanged(holder.getAdapterPosition());
                  }
              }
          });
      }
  
      private void setHighlightedText(int position, TextView textview) {
          String name = mDataSet.get(position).getName();
          SpannableString str = new SpannableString(name);
          int endLength = name.toLowerCase().indexOf(mSearchQuery) + mSearchQuery.length();
          ColorStateList highlightedColor = new ColorStateList(new int[][]{new int[]{}}, new int[]{ContextCompat.getColor(mContext, R.color.colorAccent)});
          TextAppearanceSpan textAppearanceSpan = new TextAppearanceSpan(null, Typeface.NORMAL, -1, highlightedColor, null);
          str.setSpan(textAppearanceSpan, name.toLowerCase().indexOf(mSearchQuery), endLength, Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
          textview.setText(str);
      }
  
      private void removeFromSelection(Integer id) {
          for (int i = 0; i < MultiSelectDialog.selectedIdsForCallback.size(); i++) {
              if (id.equals(MultiSelectDialog.selectedIdsForCallback.get(i))) {
                  MultiSelectDialog.selectedIdsForCallback.remove(i);
              }
          }
      }
  
  
      private boolean checkForSelection(Integer id) {
          for (int i = 0; i < MultiSelectDialog.selectedIdsForCallback.size(); i++) {
              if (id.equals(MultiSelectDialog.selectedIdsForCallback.get(i))) {
                  return true;
              }
          }
          return false;
      }
  
  
      /*//get selected name string seperated by coma
      public String getDataString() {
          String data = "";
          for (int i = 0; i < mDataSet.size(); i++) {
              if (checkForSelection(mDataSet.get(i).getId())) {
                  data = data + ", " + mDataSet.get(i).getName();
              }
          }
          if (data.length() > 0) {
              return data.substring(1);
          } else {
              return "";
          }
      }
  
      //get selected name ararylist
      public ArrayList<String> getSelectedNameList() {
          ArrayList<String> names = new ArrayList<>();
          for (int i = 0; i < mDataSet.size(); i++) {
              if (checkForSelection(mDataSet.get(i).getId())) {
                  names.add(mDataSet.get(i).getName());
              }
          }
          //  return names.toArray(new String[names.size()]);
          return names;
      }*/
  
  
      @Override
      public int getItemCount() {
          return mDataSet.size();
      }
  
      void setData(ArrayList<MultiSelectModel> data, String query, MutliSelectAdapter mutliSelectAdapter) {
          this.mDataSet = data;
          this.mSearchQuery = query;
          mutliSelectAdapter.notifyDataSetChanged();
      }
  
      class MultiSelectDialogViewHolder extends RecyclerView.ViewHolder {
          private TextView dialog_name_item;
          private AppCompatCheckBox dialog_item_checkbox;
          private LinearLayout main_container;
  
          MultiSelectDialogViewHolder(View view) {
              super(view);
              dialog_name_item = (TextView) view.findViewById(R.id.dialog_item_name);
              dialog_item_checkbox = (AppCompatCheckBox) view.findViewById(R.id.dialog_item_checkbox);
              main_container = (LinearLayout) view.findViewById(R.id.main_container);
          }
      }
  }
  