cn.scujcc.bug.bitcoinplatformandroid.fragment.CandlestickChartsFragment.java Source code

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package cn.scujcc.bug.bitcoinplatformandroid.fragment;

import android.content.Intent;
import android.graphics.Color;
import android.graphics.Paint;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

import com.github.mikephil.charting.charts.CandleStickChart;
import com.github.mikephil.charting.components.XAxis;
import com.github.mikephil.charting.components.YAxis;
import com.github.mikephil.charting.data.CandleData;
import com.github.mikephil.charting.data.CandleDataSet;
import com.github.mikephil.charting.data.CandleEntry;

import org.json.JSONArray;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.Date;
import java.util.List;

import cn.scujcc.bug.bitcoinplatformandroid.R;
import cn.scujcc.bug.bitcoinplatformandroid.activity.ActualTransactionCandlestickChartsActivity;
import cn.scujcc.bug.bitcoinplatformandroid.model.KLine;
import cn.scujcc.bug.bitcoinplatformandroid.model.RequestParameter;
import cn.scujcc.bug.bitcoinplatformandroid.util.NetWork;
import cn.scujcc.bug.bitcoinplatformandroid.util.SecurityConfig;

/**
 * Created by lilujia on 16/3/27.
 * <p/>
 * K
 */
public class CandlestickChartsFragment extends BaseFragment {

    private static final String TAG = "ATKLineChartsFragment";
    private static final String KLINE_INFO_URL = "http://115.28.242.27:8080/at/kline";
    public static final String ARGS_IS_FULL = "ARGS_IS_FULL";

    private CandleStickChart mChart;
    private ArrayList<CandleEntry> mYVals;
    private ArrayList<String> mXVals;
    private boolean isFull;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        savedInstanceState = getArguments();
        if (savedInstanceState != null) {
            isFull = savedInstanceState.getBoolean(ARGS_IS_FULL);
        }
    }

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_actualtransactioncandlestickcharts, container, false);

        mChart = (CandleStickChart) view.findViewById(R.id.chart1);
        mChart.setBackgroundColor(Color.WHITE);

        mChart.setDescription("");

        // if more than 60 entries are displayed in the chart, no values will be
        // drawn
        mChart.setMaxVisibleValueCount(60);

        // scaling can now only be done on x- and y-axis separately
        mChart.setPinchZoom(false);

        mChart.setDrawGridBackground(false);

        XAxis xAxis = mChart.getXAxis();
        xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
        xAxis.setSpaceBetweenLabels(2);
        xAxis.setDrawGridLines(false);

        YAxis leftAxis = mChart.getAxisLeft();
        //        leftAxis.setEnabled(false);
        leftAxis.setLabelCount(7, false);
        leftAxis.setDrawGridLines(false);
        leftAxis.setDrawAxisLine(false);

        YAxis rightAxis = mChart.getAxisRight();
        rightAxis.setEnabled(false);
        //        rightAxis.setStartAtZero(false);

        mChart.getLegend().setEnabled(false);

        mChart.setNoDataText("?");

        if (!isFull) {
            mChart.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Intent intent = new Intent();
                    intent.setClass(getActivity(), ActualTransactionCandlestickChartsActivity.class);
                    getActivity().startActivity(intent);
                }
            });
        }

        loadInitData();

        return view;
    }

    /**
     * ??
     */
    public void loadInitData() {
        KLineDataInitAsyncTask initAsyncTask = new KLineDataInitAsyncTask();
        initAsyncTask.execute();
    }

    public void updateKines(List<KLine> list) {
        if (list == null) {
            return;
        }

        mChart.resetTracking();

        ArrayList<CandleEntry> yVals1 = new ArrayList<CandleEntry>();
        ArrayList<String> xVals = new ArrayList<String>();

        for (int i = 0; i < list.size(); i++) {
            // float mult = 400;
            KLine kLine = list.get(i);
            float val = (float) kLine.getVal();

            float high = (float) kLine.getHigh();
            float low = (float) kLine.getLow();

            float open = (float) kLine.getOpen();
            float close = (float) kLine.getClose();

            yVals1.add(new CandleEntry(i, high, low, open, close));
            xVals.add(kLine.getTime());
        }

        CandleDataSet set1 = new CandleDataSet(yVals1, "Data Set");
        set1.setAxisDependency(YAxis.AxisDependency.LEFT);
        //        set1.setColor(Color.rgb(80, 80, 80));
        set1.setShadowColor(Color.DKGRAY);
        set1.setShadowWidth(0.7f);
        set1.setDecreasingColor(Color.RED);
        set1.setDecreasingPaintStyle(Paint.Style.FILL);
        set1.setIncreasingColor(Color.rgb(122, 242, 84));
        set1.setIncreasingPaintStyle(Paint.Style.STROKE);
        set1.setNeutralColor(Color.BLUE);
        //set1.setHighlightLineWidth(1f);

        CandleData data = new CandleData(xVals, set1);

        mChart.setData(data);
        mChart.invalidate();
    }

    class KLineDataInitAsyncTask extends AsyncTask<Void, Void, List<KLine>> {

        @Override
        protected List<KLine> doInBackground(Void... params) {

            try {

                RequestParameter parameter1 = new RequestParameter("api_key", SecurityConfig.USD_ACCESS_KEY);

                RequestParameter parameter2 = new RequestParameter("secret_key", SecurityConfig.USD_SECRET_KEY);

                RequestParameter parameter3;
                RequestParameter parameter4;

                if (!isFull) {
                    parameter3 = new RequestParameter("size", "" + 30);

                    Date date = new Date();
                    Calendar cal = Calendar.getInstance();
                    cal.setTime(date);//date ???Date
                    cal.add(Calendar.MINUTE, -15);// before 8 hour
                    long time = cal.getTimeInMillis();
                    parameter4 = new RequestParameter("since", "" + time);
                    Log.e(TAG, "time" + time);
                } else {
                    parameter3 = new RequestParameter("size", "" + 30);
                    Date date = new Date();
                    Calendar cal = Calendar.getInstance();
                    cal.setTime(date);//date ???Date
                    cal.add(Calendar.MINUTE, -30);// before 8 hour
                    long time = cal.getTimeInMillis();
                    parameter4 = new RequestParameter("since", "" + time);
                    Log.e(TAG, "time" + time);
                }
                String json = NetWork.requestGetUrl(KLINE_INFO_URL, parameter1, parameter2, parameter3, parameter4);

                Log.e(TAG, "JSON " + json);

                List<KLine> list = new ArrayList<>();

                JSONArray arr = new JSONArray(json);

                for (int i = 0; i < arr.length(); i++) {
                    JSONArray obj = arr.getJSONArray(i);
                    KLine kline = new KLine();

                    kline.setDate(obj.getLong(0));
                    kline.setOpen(obj.getDouble(1));
                    kline.setHigh(obj.getDouble(2));
                    kline.setLow(obj.getDouble(3));
                    kline.setClose(obj.getDouble(4));
                    kline.setVal(obj.getDouble(5));

                    list.add(kline);

                }
                Log.e(TAG, "Size " + list.size());

                return list;
            } catch (Exception e) {
                e.printStackTrace();
                Log.e(TAG, "Exception " + e.getLocalizedMessage());
                sendServerError();
                return null;
            }

        }

        @Override
        protected void onPostExecute(List<KLine> list) {
            super.onPostExecute(list);
            updateKines(list);
        }
    }

}