Android Open Source - HRForecast-WFM Radar Chart Fragment

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License

The source code is released under:

Copyright 2014 Ahmed Shafei

Java Source Code

package de.hrf.workforcemanagement;
// w  w w  .  ja  v a 2  s.co m
import java.io.IOException;
import java.net.URL;
import java.util.ArrayList;

import com.github.mikephil.charting.charts.RadarChart;
import com.github.mikephil.charting.data.Entry;
import com.github.mikephil.charting.data.RadarData;
import com.github.mikephil.charting.data.RadarDataSet;
import com.github.mikephil.charting.utils.XLabels.XLabelPosition;

import android.app.ProgressDialog;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import de.hrf.workforcemanagement.models.Chart;
import de.hrf.workforcemanagement.models.Property;
import de.hrf.workforcemanagement.models.radarchart.RadarRegion;

/**
 * {@link Fragment} responsible for showing the details of the selected chart
 * type. It receives a call whenever new chart type is selected
 */
public class RadarChartFragment extends Fragment {

  private Chart chart;
  private ProgressDialog loadingDialog;
  private RadarChart radarChartView;
  private RadarDataSet radarDataSet;
  private de.hrf.workforcemanagement.models.radarchart.RadarChart radarChartData;

  public RadarChartFragment(Chart chart) {
    this.chart = chart;
  }

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

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    /**
     * Edit this to inflate the corresponding layout of this fragment chart
     * type
     */
    View rootView = inflater.inflate(R.layout.radar_chart_fragment,
        container, false);
    radarChartView = (RadarChart) rootView.findViewById(R.id.radar_chart);

    // Show loadingDialog
    loadingDialog = ProgressDialog.show(this.getActivity(), getResources()
        .getString(R.string.chart_loading),
        getResources().getString(R.string.please_wait), true, false);

    new Thread(new Runnable() {
      @Override
      public void run() {
        populateGraph();
      }
    }).start();
    return rootView;
  }

  private void populateGraph() {
    loadChartViewProperties();
    loadChartData();
    loadChartProperties();

    this.getActivity().runOnUiThread(new Runnable() {
      @Override
      public void run() {
        loadingDialog.dismiss();
        radarChartView.invalidate();
        radarChartView.animateXY(1500, 1500);
      }
    });
  }

  /**
   * Load {@link RadatChart} related properties.
   */
  private void loadChartViewProperties() {
    radarChartView.setDescription("");
    radarChartView.setDrawYValues(true);
    radarChartView.setDrawUnitsInChart(true);
    radarChartView.getXLabels().setPosition(XLabelPosition.BOTTOM);
    radarChartView.getLegend();
    radarChartView.setValueTextSize(12f);
    radarChartView.getXLabels().setTextSize(11f);
    radarChartView.getYLabels().setTextSize(14f);
  }

  /**
   * Load {@link Chart} related {@link Property} list.
   */
  private void loadChartProperties() {
    loadChartBackground();
    setChartDataProperties();
    setChartAxisProperties();
  }

  private void loadChartBackground() {
    for (final Property property : chart.getPropertyList()) {
      if (property.getType().equals("chart-bg-color")) {

        this.getActivity().runOnUiThread(new Runnable() {
          @Override
          public void run() {
            radarChartView.setBackgroundColor(Color
                .parseColor(property.getValue()));
          }
        });

      } else if (property.getType().equals("chart-bg-picture"))
        try {
          URL url = new URL(property.getValue());
          final Bitmap bmp = BitmapFactory.decodeStream(url
              .openConnection().getInputStream());

          this.getActivity().runOnUiThread(new Runnable() {
            @Override
            public void run() {
              radarChartView
                  .setBackgroundDrawable(new BitmapDrawable(
                      bmp));
            }
          });

        } catch (IOException e) {
          Log.e("Exception loading background image URL",
              e.getMessage());
          e.printStackTrace();
        }
    }
  }

  /**
   * Load {@link Chart}
   * {@link de.hrf.workforcemanagement.model.radarChart.RadarChart} data.
   * 
   * @param radarChartView
   */
  private void loadChartData() {
    radarChartData = (de.hrf.workforcemanagement.models.radarchart.RadarChart) chart
        .getChartList().get(0);
    ArrayList<RadarDataSet> radarDataSets = new ArrayList<RadarDataSet>();
    ArrayList<String> xVals = new ArrayList<String>();
    String[] radarRegionYVals = new String[0];
    // Adds Y Values
    for (int index = 0; index < radarChartData.getRadarYaxis()
        .getDimensions().size(); index++) {
      ArrayList<Entry> yVals = new ArrayList<Entry>();
      for (int i = 0; i < radarChartData.getRadarData().size(); i++) {
        RadarRegion radarRegion = radarChartData.getRadarData().get(i);
        radarRegionYVals = radarRegion.getyValue().split(",");
        yVals.add(new Entry(Float.parseFloat(radarRegionYVals[index]),
            i));
      }

      radarDataSet = new RadarDataSet(yVals, radarChartData
          .getRadarYaxis().getDimensions().get(index).getText());

      radarDataSet.setLineWidth(3f);
      radarDataSet.setFillAlpha(65);
      radarDataSets.add(radarDataSet);
    }

    // Adds X Values
    for (int i = 0; i < radarChartData.getRadarData().size(); i++) {
      RadarRegion radarRegion = radarChartData.getRadarData().get(i);
      xVals.add(radarRegion.getRegionName());
    }

    RadarData data = new RadarData(xVals, radarDataSets);
    radarChartView.setData(data);
    setRadarDataColor(radarDataSets);

  }

  private void setChartDataProperties() {

  }

  private void setChartAxisProperties() {
    if (radarChartData.getRadarXAxis().isVisible() == false) {
      radarChartView.setDrawXLabels(false);
    }

    if (radarChartData.getRadarYaxis().isVisible() == false) {
      radarChartView.setDrawYLabels(false);
      radarChartView.setDrawYValues(false);
    }
    if ((radarChartData.getRadarXAxis().isVisible() == false)
        && (radarChartData.getRadarYaxis().isVisible() == false)) {
      radarChartView.setDrawYValues(false);
      radarChartView.setDrawXLabels(false);
      radarChartView.setDrawYLabels(false);

    }

  }

  private void setRadarDataColor(ArrayList<RadarDataSet> radarDataSets) {
    ArrayList<de.hrf.workforcemanagement.models.Color> radarColors = radarChartData
        .getRadarData().get(0).getColors();
    for (int index = 0; index < radarColors.size(); index++) {
      radarDataSets.get(index).setColor(
          Color.parseColor(radarColors.get(index).getColorHexCode()));
    }
  }
}

Java Source Code List

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