How to get Hashmap Data in Recycle view

Question

I had seen many examples regarding Hashmap Data but I am not getting the data as required.

Here is my code:

public class QuickGraphAdapter extends RecyclerView.Adapter<QuickGraphAdapter.GraphHolder> {

        private Context context;
        private HashMap<String, ArrayList<CoinPriceGraph>> GraphValue;
        private String TAG = QuickGraphAdapter.class.getSimpleName();
        public QuickGraphAdapter(DashBoardActivity dashBoardActivity, HashMap<String, ArrayList<CoinPriceGraph>> grStringArrayListHashMap) {
            this.context = dashBoardActivity;
            this.GraphValue = grStringArrayListHashMap;

        }

        @Override
        public int getItemViewType(int position) {
            return position;
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public QuickGraphAdapter.GraphHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View view = LayoutInflater.from(context).inflate(R.layout.item_list_quick_graph_view, parent, false);
            GraphHolder graphHolder = new GraphHolder(view);
            return graphHolder;
        }

        @Override
        public void onBindViewHolder(QuickGraphAdapter.GraphHolder holder, int position) {
            for (Map.Entry<String, ArrayList<CoinPriceGraph>> graph : GraphValue.entrySet()) {
               ArrayList<CoinPriceGraph> graphs = graph.getValue();
              Log.e(TAG, "Key Name: " + graph.getKey());
            holder.tvGraphName.setText(graph.getKey());


DataPoint[] dataPoint = new DataPoint[priceValue.size()];
        for (int i = 0; i < priceValue.size(); i++) {
            Log.e(TAG, "Price Value: " + priceValue.get(i).getCoinCCPrice());
            long unixSeconds = Long.parseLong(priceValue.get(i).getCoinCCTime());
            Date date = new Date(unixSeconds * 1000L); // *1000 is to convert seconds to milliseconds
            SimpleDateFormat sdf = new SimpleDateFormat("HH:mm"); // the format of your date
            String formattedDate = sdf.format(date);
            dataPoint[i] = new DataPoint(Double.parseDouble(formattedDate.replace(":", ".")), Double.parseDouble(priceValue.get(i).getCoinCCPrice()));
        }

        LineGraphSeries graphSeries = new LineGraphSeries<>(dataPoint);
        holder.gvCoinGraph.getViewport().setYAxisBoundsManual(true);
        graphSeries.setDrawDataPoints(true);
        graphSeries.setDataPointsRadius(6);
        graphSeries.setThickness(3);
        graphSeries.setDrawBackground(true);
        graphSeries.setColor(context.getResources().getColor(R.color.blue));
        graphSeries.setBackgroundColor(context.getResources().getColor(R.color.gry_color));
        holder.gvCoinGraph.addSeries(graphSeries);
        holder.gvCoinGraph.getViewport().setXAxisBoundsManual(true);
        holder.gvCoinGraph.getViewport().setScalable(true);
        holder.gvCoinGraph.getViewport().setScrollable(true);

            }


        }

        @Override
        public int getItemCount() {
            return GraphValue.size();
        }
        public class GraphHolder extends RecyclerView.ViewHolder {

            TextView tvGraphName;
            GraphView gvCoinGraph;

            public GraphHolder(View itemView) {
                super(itemView);
                tvGraphName = (TextView) itemView.findViewById(R.id.tv_quick_graph_name);
                gvCoinGraph = (GraphView) itemView.findViewById(R.id.gv_quick_graph);
            }
        }
    }

In above i am get the hash key value, all value is print in log cat but problem is repeated last key value in recycleview. need to add All hash value new textview

add the graph code which plot in recycler view also which hashkey

Answer 1

change your onBindViewHolder();

@Override
        public void onBindViewHolder(QuickGraphAdapter.GraphHolder holder, int position) {
            for (Map.Entry<String, ArrayList<CoinPriceGraph>> graph : GraphValue.entrySet()) {
               ArrayList<CoinPriceGraph> graphs = graph.getValue();
              Log.e(TAG, "Key Name: " + graph.getKey());
            holder.tvGraphName.setText(graph.getKey());
            }


        }