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/***************************************************************
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* Purpose: Chart fragment for OpenMoneyBox Application
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* Author: Igor Calì (igor.cali0@gmail.com)
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* Copyright: Igor Calì (igor.cali0@gmail.com)
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**************************************************************/
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package com.igisw.openmoneybox;
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import android.content.Context;
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import android.graphics.Bitmap;
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import android.graphics.Color;
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import android.net.Uri;
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import android.os.Bundle;
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import android.support.v4.app.Fragment;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.ViewGroup;
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import com.github.mikephil.charting.charts.LineChart;
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import com.github.mikephil.charting.charts.PieChart;
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import com.github.mikephil.charting.components.YAxis;
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import com.github.mikephil.charting.data.Entry;
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import com.github.mikephil.charting.data.LineData;
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import com.github.mikephil.charting.data.LineDataSet;
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import com.github.mikephil.charting.data.PieData;
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import com.github.mikephil.charting.data.PieDataSet;
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import com.github.mikephil.charting.data.PieEntry;
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import com.github.mikephil.charting.highlight.Highlight;
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import com.github.mikephil.charting.interfaces.datasets.ILineDataSet;
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import java.io.FileNotFoundException;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.text.NumberFormat;
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import java.text.ParseException;
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import java.util.ArrayList;
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import java.util.Calendar;
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import java.util.GregorianCalendar;
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import java.util.List;
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import java.util.Locale;
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* A simple {@link Fragment} subclass.
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* Activities that contain this fragment must implement the
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* {@link ChartFragment.OnFragmentInteractionListener} interface
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* to handle interaction events.
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* Use the {@link ChartFragment#newInstance} factory method to
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* create an instance of this fragment.
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public class ChartFragment extends Fragment {
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// TODO: Rename parameter arguments, choose names that match
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// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
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private static final String ARG_PARAM1 = "param1";
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private static final String ARG_PARAM2 = "param2";
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private OnFragmentInteractionListener mListener;
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private mainactivity activity;
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public ChartFragment() {
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// Required empty public constructor
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* Use this factory method to create a new instance of
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* this fragment using the provided parameters.
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* @param param1 Parameter 1.
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* @param param2 Parameter 2.
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* @return A new instance of fragment ChartFragment.
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// TODO: Rename and change types and number of parameters
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public static ChartFragment newInstance(String param1, String param2) {
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ChartFragment fragment = new ChartFragment();
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Bundle args = new Bundle();
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args.putString(ARG_PARAM1, param1);
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args.putString(ARG_PARAM2, param2);
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fragment.setArguments(args);
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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if (getArguments() != null) {
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String mParam1 = getArguments().getString(ARG_PARAM1);
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String mParam2 = getArguments().getString(ARG_PARAM2);
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public View onCreateView(LayoutInflater inflater, ViewGroup container,
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Bundle savedInstanceState) {
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activity = (mainactivity) getActivity();
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// Inflate the layout for this fragment
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view = inflater.inflate(R.layout.fragment_chart, container, false);
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// TODO: Rename method, update argument and hook method into UI event
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public void onButtonPressed(Uri uri) {
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if (mListener != null) {
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mListener.onFragmentInteraction(uri);
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public void onAttach(Context context) {
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super.onAttach(context);
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if (context instanceof OnFragmentInteractionListener) {
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mListener = (OnFragmentInteractionListener) context;
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throw new RuntimeException(context.toString()
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+ " must implement OnFragmentInteractionListener");
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public void onDetach() {
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* This interface must be implemented by activities that contain this
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* fragment to allow an interaction in this fragment to be communicated
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* to the activity and potentially other fragments contained in that
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* See the Android Training lesson <a href=
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* "http://developer.android.com/training/basics/fragments/communicating.html"
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* >Communicating with Other Fragments</a> for more information.
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public interface OnFragmentInteractionListener {
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// TODO: Update argument type and name
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void onFragmentInteraction(Uri uri);
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private void paintChart(){
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boolean default_is_small = false;
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double percent, sum_small_funds = 0;
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// Fund Chart construction
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List<PieEntry> pie_entries = new ArrayList<>();
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PieChart FundPlot = view.findViewById(R.id.fund_graph);
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//FundPlot.removeSlices();
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int inserted_entries = 0;
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int default_entry = -1;
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for(i = 0; i < activity.Data.NFun; i++){
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percent = activity.Data.Funds.get(i).Value / activity.Data.GetTot(omb31core.TTypeVal.tvFou) * 100;
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pie_entries.add(new PieEntry((float) activity.Data.Funds.get(i).Value, activity.Data.Funds.get(i).Name));
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if(activity.Data.Funds.get(i).Name.compareToIgnoreCase(activity.Data.FileData.DefFund) == 0)
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default_entry = inserted_entries - 1;
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sum_small_funds += activity.Data.Funds.get(i).Value;
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if(activity.Data.Funds.get(i).Name.compareToIgnoreCase(activity.Data.FileData.DefFund) == 0) default_is_small = true;
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if(sum_small_funds > 0){
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pie_entries.add(new PieEntry((float) sum_small_funds, getResources().getString(R.string.fund_others)));
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if(default_is_small)default_entry = inserted_entries - 1;
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PieDataSet set = new PieDataSet(pie_entries, getResources().getString(R.string.fund_chart));
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set.setXValuePosition(PieDataSet.ValuePosition.OUTSIDE_SLICE);
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set.setValueLinePart1OffsetPercentage(100.f);
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set.setValueLinePart1Length(0.8f);
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set.setValueLinePart2Length(0.8f);
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for(i = 1; i < 7; i++){
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if(i == 1) set.setColor(Color.parseColor(color));
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else set.addColor(Color.parseColor(color));
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PieData data = new PieData(set);
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FundPlot.setData(data);
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FundPlot.getDescription().setEnabled(false);
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FundPlot.setEntryLabelColor(Color.parseColor("#000000"));
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FundPlot.setEntryLabelTextSize(7f);
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// Highlight default fund
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Highlight h = new Highlight((float) default_entry, 0, 0); // dataset index for piechart is always 0
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FundPlot.highlightValues(new Highlight[] { h });
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FundPlot.setDrawHoleEnabled(false);
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FundPlot.invalidate(); // refresh
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// Trend chart construction
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GregorianCalendar month = activity.Data.Day;
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GregorianCalendar lastday = month;
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month.set(Calendar.MONTH, (int) activity.Data.FileData.Month);
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int number_of_days = month.getActualMaximum(Calendar.DAY_OF_MONTH);
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List<Entry> trendvalues = new ArrayList<>();
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double LastValue = 0 /*, MinValue = 0, MaxValue = 0 */;
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NumberFormat nf = NumberFormat.getInstance(Locale.getDefault());
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for(i = 0; i < activity.Data.NLin; i++){
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if(activity.Data.isDate(i)){
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lastday = activity.Data.Lines.get(i).Date;
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// Robustness code to handle localized or unlocalized strings
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value = activity.Data.Lines.get(i).Value;
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if(value.contains(".")) LastValue = Double.parseDouble(value);
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LastValue = nf.parse(value).doubleValue();
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} catch (ParseException e) {
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// TODO Auto-generated catch block
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Entry day_entry = new Entry((float) lastday.getTimeInMillis(), (float) LastValue);
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trendvalues.add(day_entry);
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LineChart TrendPlot = view.findViewById(R.id.trend_graph);
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LineDataSet setComp1 = new LineDataSet(trendvalues, getResources().getString(R.string.trend_chart));
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setComp1.setAxisDependency(YAxis.AxisDependency.LEFT);
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setComp1.setColor(Color.parseColor("#000000"));
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// use the interface ILineDataSet
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List<ILineDataSet> dataSets = new ArrayList<>();
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dataSets.add(setComp1);
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if(! activity.Data.FileData.ReadOnly){
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double currenttotal = activity.Data.GetTot(omb31core.TTypeVal.tvFou);
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month.set(Calendar.DAY_OF_MONTH, number_of_days);
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List<Entry> trendtrendvalues = new ArrayList<>();
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trendtrendvalues.add(new Entry((float) lastday.getTimeInMillis(), (float) LastValue));
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trendtrendvalues.add(new Entry((float) month.getTimeInMillis(), (float) currenttotal));
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LineDataSet setComp2 = new LineDataSet(trendtrendvalues, getResources().getString(R.string.trend_last));
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setComp2.setAxisDependency(YAxis.AxisDependency.LEFT);
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dataSets.add(setComp2);
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if(LastValue == currenttotal) color = "#FFFF00";
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else if(LastValue < currenttotal) color = "#006400";
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else color = "#FF0000";
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setComp2.setColor(Color.parseColor(color));
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LineData trenddata = new LineData(dataSets);
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TrendPlot.getXAxis().setValueFormatter(new DateAxisValueFormatter(null));
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TrendPlot.setData(trenddata);
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TrendPlot.getDescription().setEnabled(false);
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TrendPlot.invalidate(); // refresh
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public void saveChart(int id, File filename){
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View plot = view.findViewById(id);
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plot.setDrawingCacheEnabled (true);
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plot.buildDrawingCache(true);
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Bitmap b = Bitmap.createBitmap(plot.getDrawingCache());
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OutputStream os = null;
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os = new FileOutputStream(filename);
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} catch (FileNotFoundException e) {
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// TODO Auto-generated catch block
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b.compress(Bitmap.CompressFormat.PNG, 100, os);
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plot.destroyDrawingCache();
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} catch (IOException e) {
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// TODO Auto-generated catch block
added
removed
android/API24/main/java/com/igisw/openmoneybox/ChartFragment.java
