Adapter to show data like datewise (timeline) with load more feature

TaskAdapter.java

/**
 * Created by vishal.halani on 11-May-18.

 */

public class TaskAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    private final int VIEW_ITEM = 1;
    private final int VIEW_PROG = 0;
    // The minimum amount of items to have below your current scroll position
    // before loading more.
    private int visibleThreshold = 5;
    private int lastVisibleItem, totalItemCount;
    private boolean loading;
    private OnLoadMoreListener onLoadMoreListener;
    private SimpleDateFormat myDateFormat;
    ArrayList<TaskModel> mList;
    private Context context;
    boolean isAllSelected = false;

    public TaskAdapter(ArrayList<TaskModel> mList, Context context, RecyclerView recyclerView) {
        this.context = context;
        this.mList = mList;
        myDateFormat = new SimpleDateFormat("dd/MM/yyyy", Locale.UK);
        if (recyclerView.getLayoutManager() instanceof LinearLayoutManager) {

            final LinearLayoutManager linearLayoutManager = (LinearLayoutManager) recyclerView
                    .getLayoutManager();


            recyclerView
                    .addOnScrollListener(new RecyclerView.OnScrollListener() {
                        @Override
                        public void onScrolled(RecyclerView recyclerView,
                                               int dx, int dy) {
                            super.onScrolled(recyclerView, dx, dy);

                            totalItemCount = linearLayoutManager.getItemCount();
                            lastVisibleItem = linearLayoutManager
                                    .findLastVisibleItemPosition();
                            if (!loading
                                    && totalItemCount <= (lastVisibleItem + visibleThreshold)) {
                                // End has been reached
                                // Do something
                                if (onLoadMoreListener != null) {
                                    onLoadMoreListener.onLoadMore();
                                }
                                loading = true;
                            }
                        }
                    });
        }
    }

    @Override
    public int getItemViewType(int position) {
        return mList.get(position) != null ? VIEW_ITEM : VIEW_PROG;
    }

    public void setAllSelected(boolean allSelected) {
        isAllSelected = allSelected;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
        RecyclerView.ViewHolder vh;
        if (viewType == VIEW_ITEM) {
            View v = LayoutInflater.from(viewGroup.getContext()).inflate(
                    R.layout.item_assigned_task_layout, viewGroup, false);

            vh = new ItemViewHolder(v);
            ;
        } else {
            View v = LayoutInflater.from(viewGroup.getContext()).inflate(
                    R.layout.footer_progressbar, viewGroup, false);

            vh = new ProgressViewHolder(v);
        }
        return vh;
//        if (viewType == TYPE_ITEM) {
//        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item_assigned_task_layout, viewGroup, false);
//        return new ItemViewHolder(view);

//        } else if (viewType == TYPE_HEADER) {
//            View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.header_layout, viewGroup, false);
//            return new HeaderViewHolder(view);
//
//        }


//        throw new RuntimeException("there is no type that matches the type " + viewType + " + make sure your using types correctly");

    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {

        if (holder instanceof ItemViewHolder) {

            ItemViewHolder vholder = (ItemViewHolder) holder;
            final TaskModel item = (TaskModel) mList.get(position);
            //set the id to editetxt important line here as it will be helpful to set text according to position
            vholder.tvTask.setId(position);
            vholder.tvTask.setText(item.getTask());
//        vholder.tvStartDate.setText(Const.convertServerDateToOnlyUserDate(item.getStartDate()));
//        vholder.tvEndDate.setText(Const.convertServerDateToOnlyUserDate(item.getDueDate()));

            showTimeLines(position, vholder, item);


            if (item.getStatus().equals(Const.STATUS_COMPLETED)) {


                Date startDate = Const.convertServerDateToDate(Const.convertDateToUserTimeZone(item.getStartDate()));
                String planDate = myDateFormat.format(startDate);
                vholder.tvPlanDate.setVisibility(View.VISIBLE);
                vholder.tvPlanDate.setText("Plan "+planDate);
                vholder.imgView.setVisibility(View.VISIBLE);
                if (item.getDueDate() != null) {
                    Timber.tag("ADAPTER").i("LOG TIME=>%s", Const.getActualTimeSlot(item.getDueDate()));
                    //   vholder.tvActual.setText(Const.getActualTimeSlot(item.getDueDate()));
                    switch (Const.getActualTimeSlot(item.getDueDate())) {
                        case "A":
                            Glide.with(context)
                                    .load(R.drawable.ic_task_a)
                                    .into(vholder.imgView);

//                    vholder.imgView.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_task_a));
//                    vholder.tvActual.setBackgroundColor(ContextCompat.getColor(context, R.color.actual_a));
                            break;
                        case "B":

                            Glide.with(context)
                                    .load(R.drawable.ic_task_b)
                                    .into(vholder.imgView);

                            //    vholder.imgView.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_task_b));
//                    vholder.tvActual.setBackgroundColor(ContextCompat.getColor(context, R.color.actual_b));
                            break;
                        case "C":
                            Glide.with(context)
                                    .load(R.drawable.ic_task_c)
                                    .into(vholder.imgView);
                            //vholder.imgView.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_task_c));
//                    vholder.tvActual.setBackgroundColor(ContextCompat.getColor(context, R.color.actual_c));
                            break;
                        case "D":
                            Glide.with(context)
                                    .load(R.drawable.ic_task_d)
                                    .into(vholder.imgView);
                            //vholder.imgView.setImageDrawable(ContextCompat.getDrawable(context, R.drawable.ic_task_d));
//                    vholder.tvActual.setBackgroundColor(ContextCompat.getColor(context, R.color.actual_d));
                            break;
                    }
                }


            } else {
                vholder.tvPlanDate.setVisibility(View.INVISIBLE);
                try {

                    Glide.with(context)
                            .load(R.drawable.ic_edit)
                            .into(vholder.imgView);


                } catch (Exception e) {
                    e.printStackTrace();
                }

            }

            if (isAllSelected) {
                if (item.getEmployee().getFullname() != null) {
                    vholder.tvAssigned.setVisibility(View.VISIBLE);
                    vholder.tvAssigned.setText(item.getEmployee().getFullname());

                } else {
                    vholder.tvAssigned.setVisibility(View.GONE);
                }
            } else {
                if (item.getAssignedby() != null && !item.getAssignedby().getID().equals("0")) {
                    vholder.tvAssigned.setVisibility(View.VISIBLE);
                    vholder.tvAssigned.setText(item.getAssignedby().getFullname());

                } else {
                    vholder.tvAssigned.setVisibility(View.GONE);
                }
            }

        } else if (holder instanceof ProgressViewHolder) {
            ProgressViewHolder loadingViewHolder = (ProgressViewHolder) holder;
            loadingViewHolder.progressBar.setIndeterminate(true);
        }


    }

    public void setOnLoadMoreListener(OnLoadMoreListener onLoadMoreListener) {
        this.onLoadMoreListener = onLoadMoreListener;
    }

    @Override
    public int getItemCount() {
        return mList == null ? 0 : mList.size();
    }

    public void setLoaded() {
        loading = false;
    }

    public class ItemViewHolder extends RecyclerView.ViewHolder {
        public View View, topView, bottomView;
        public TextView tvTask, tvAssigned, tvDate, tvPlanDate;
        public ImageView imgView;
        public LinearLayout itemLayout, addItem, headerLayout;

        public ItemViewHolder(View v) {
            super(v);
            View = v;
            // Add your UI Components here
            tvTask = (TextView) v.findViewById(R.id.task_tv);
            tvDate = (TextView) v.findViewById(R.id.date_tv);
            tvPlanDate = (TextView) v.findViewById(R.id.planDate_tv);

            headerLayout = (LinearLayout) v.findViewById(R.id.date_headerView);


//            vholder.tvActual = (TextView) v.findViewById(R.id.actual_tv);
            tvAssigned = (TextView) v.findViewById(R.id.assigned_by_tv);
            addItem = (LinearLayout) v.findViewById(R.id.item_layout_add_task_layout);
            imgView = (ImageView) v.findViewById(R.id.add_taskView);
            itemLayout = (LinearLayout) v.findViewById(R.id.item_card);
            topView = (View) v.findViewById(R.id.item_layout_top_view);
            bottomView = (View) v.findViewById(R.id.item_layout_bottom_view);
        }

    }

    private void showTimeLines(int position, AssignedTaskAdapter.ItemViewHolder vholder, TaskModel item) {

        if (position <= mList.size() && mList.size() != 1) {

            if (position != 0 && (position != mList.size() - 1)) {
                final TaskModel premodel = mList.get(position - 1);
                if (mList.get(position + 1) != null) {
                    final TaskModel postmodel = mList.get(position + 1);

                    String preModelDate = Const.convertServerDateToOnlyDate(premodel.getDueDate()) == null ? "" : Const.convertServerDateToOnlyDate(premodel.getDueDate());
                    String postModelDate = Const.convertServerDateToOnlyDate(postmodel.getDueDate()) == null ? "" : Const.convertServerDateToOnlyDate(postmodel.getDueDate());
                    Log.i("TAG", "ITEM POS=>" + position);
                    Log.i("TAG", "Size=>" + mList.size());


                    String currentItemDate = Const.convertServerDateToOnlyDate(item.getDueDate());
                    if (!preModelDate.equals(currentItemDate) && postModelDate.equals(currentItemDate)) {
                        vholder.headerLayout.setVisibility(View.VISIBLE);
                        vholder.tvDate.setText(Const.convertServerDateToOnlyUserDateDay(item.getDueDate()));
                        vholder.topView.setVisibility(View.INVISIBLE);
                        vholder.bottomView.setVisibility(View.VISIBLE);

                    } else if (preModelDate.equals(currentItemDate) && postModelDate.equals(currentItemDate)) {
                        vholder.headerLayout.setVisibility(View.GONE);
                        vholder.topView.setVisibility(View.VISIBLE);
                        vholder.bottomView.setVisibility(View.VISIBLE);

                    } else if (preModelDate.equals(currentItemDate) && !postModelDate.equals(currentItemDate)) {
                        vholder.headerLayout.setVisibility(View.GONE);
                        vholder.topView.setVisibility(View.VISIBLE);
                        vholder.bottomView.setVisibility(View.INVISIBLE);

                    } else if (!preModelDate.equals(currentItemDate) && !postModelDate.equals(currentItemDate)) {

                        vholder.headerLayout.setVisibility(View.VISIBLE);
                        vholder.tvDate.setText(Const.convertServerDateToOnlyUserDateDay(item.getDueDate()));
                        vholder.topView.setVisibility(View.INVISIBLE);
                        vholder.bottomView.setVisibility(View.INVISIBLE);

                    }
                }


            } else {
                if (position == 0) {


                    final TaskModel postmodel = mList.get(position + 1);
                    String postModelDate = Const.convertServerDateToOnlyDate(postmodel.getDueDate());
                    String currentItemDate = Const.convertServerDateToOnlyDate(item.getDueDate());
                    vholder.headerLayout.setVisibility(View.VISIBLE);
                    vholder.tvDate.setText(Const.convertServerDateToOnlyUserDateDay(item.getDueDate()));
                    if (postModelDate.equals(currentItemDate)) {
                        vholder.topView.setVisibility(View.INVISIBLE);
                        vholder.bottomView.setVisibility(View.VISIBLE);
                    } else {
                        vholder.topView.setVisibility(View.INVISIBLE);
                        vholder.bottomView.setVisibility(View.INVISIBLE);
                    }

                } else {
                    final TaskModel premodel = mList.get(position - 1);
                    String preModelDate = Const.convertServerDateToOnlyDate(premodel.getDueDate());
                    String currentItemDate = Const.convertServerDateToOnlyDate(item.getDueDate());
                    if (preModelDate.equals(currentItemDate)) {
                        vholder.headerLayout.setVisibility(View.GONE);
                        vholder.topView.setVisibility(View.VISIBLE);
                        vholder.bottomView.setVisibility(View.INVISIBLE);
                    } else {
                        vholder.headerLayout.setVisibility(View.VISIBLE);
                        vholder.tvDate.setText(Const.convertServerDateToOnlyUserDateDay(item.getDueDate()));
                        vholder.topView.setVisibility(View.INVISIBLE);
                        vholder.bottomView.setVisibility(View.INVISIBLE);
                    }

                }


            }


        } else {


            vholder.headerLayout.setVisibility(View.VISIBLE);
            vholder.tvDate.setText(Const.convertServerDateToOnlyUserDateDay(item.getDueDate()));
            vholder.topView.setVisibility(View.INVISIBLE);
            vholder.bottomView.setVisibility(View.INVISIBLE);
        }


    }

    private class ProgressViewHolder extends RecyclerView.ViewHolder {

        public ProgressBar progressBar;

        public ProgressViewHolder(View v) {
            super(v);
            progressBar = (ProgressBar) v.findViewById(R.id.progressBar1);
        }
    }
}