Android Open Source - customhellochartdemo Column Chart Activity

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License

The source code is released under:
Apache License
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Java Source Code

package lecho.lib.hellocharts.samples;
//from w w  w. j a va2  s.c  o  m
import java.util.ArrayList;
import java.util.List;

import lecho.lib.hellocharts.gesture.ZoomType;
import lecho.lib.hellocharts.model.Axis;
import lecho.lib.hellocharts.model.Column;
import lecho.lib.hellocharts.model.ColumnChartData;
import lecho.lib.hellocharts.model.ColumnValue;
import lecho.lib.hellocharts.util.Utils;
import lecho.lib.hellocharts.view.Chart;
import lecho.lib.hellocharts.view.ColumnChartView;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

public class ColumnChartActivity extends ActionBarActivity {

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_column_chart);
    if (savedInstanceState == null) {
      getSupportFragmentManager().beginTransaction().add(R.id.container, new PlaceholderFragment()).commit();
    }
  }

  /**
   * A fragment containing a column chart.
   */
  public static class PlaceholderFragment extends Fragment {

    private static final int DEFAULT_DATA = 0;
    private static final int SUBCOLUMNS_DATA = 1;
    private static final int STACKED_DATA = 2;
    private static final int NEGATIVE_SUBCOLUMNS_DATA = 3;
    private static final int NEGATIVE_STACKED_DATA = 4;

    private ColumnChartView chart;
    private ColumnChartData data;
    private boolean hasAxes = true;
    private boolean hasAxesNames = true;
    private boolean hasLabels = false;
    private boolean hasLabelForSelected = false;
    private int dataType = DEFAULT_DATA;

    public PlaceholderFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
      setHasOptionsMenu(true);
      View rootView = inflater.inflate(R.layout.fragment_column_chart, container, false);

      chart = (ColumnChartView) rootView.findViewById(R.id.chart);
      chart.setOnValueTouchListener(new ValueTouchListener());

      generateData();

      return rootView;
    }

    // MENU
    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
      inflater.inflate(R.menu.column_chart, menu);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
      int id = item.getItemId();
      if (id == R.id.action_reset) {
        reset();
        generateData();
        return true;
      }
      if (id == R.id.action_subcolumns) {
        dataType = SUBCOLUMNS_DATA;
        generateData();
        return true;
      }
      if (id == R.id.action_stacked) {
        dataType = STACKED_DATA;
        generateData();
        return true;
      }
      if (id == R.id.action_negative_subcolumns) {
        dataType = NEGATIVE_SUBCOLUMNS_DATA;
        generateData();
        return true;
      }
      if (id == R.id.action_negative_stacked) {
        dataType = NEGATIVE_STACKED_DATA;
        generateData();
        return true;
      }
      if (id == R.id.action_toggle_labels) {
        toggleLabels();
        return true;
      }
      if (id == R.id.action_toggle_axes) {
        toggleAxes();
        return true;
      }
      if (id == R.id.action_toggle_axes_names) {
        toggleAxesNames();
        return true;
      }
      if (id == R.id.action_animate) {
        prepareDataAnimation();
        chart.startDataAnimation();
        return true;
      }
      if (id == R.id.action_toggle_selection_mode) {
        toggleLabelForSelected();

        Toast.makeText(getActivity(),
            "Selection mode set to " + chart.isValueSelectionEnabled() + " select any point.",
            Toast.LENGTH_SHORT).show();
        return true;
      }
      if (id == R.id.action_toggle_touch_zoom) {
        chart.setZoomEnabled(!chart.isZoomEnabled());
        Toast.makeText(getActivity(), "IsZoomEnabled " + chart.isZoomEnabled(), Toast.LENGTH_SHORT).show();
        return true;
      }
      if (id == R.id.action_zoom_both) {
        chart.setZoomType(ZoomType.HORIZONTAL_AND_VERTICAL);
        return true;
      }
      if (id == R.id.action_zoom_horizontal) {
        chart.setZoomType(ZoomType.HORIZONTAL);
        return true;
      }
      if (id == R.id.action_zoom_vertical) {
        chart.setZoomType(ZoomType.VERTICAL);
        return true;
      }
      return super.onOptionsItemSelected(item);
    }

    private void reset() {
      hasAxes = true;
      hasAxesNames = true;
      hasLabels = false;
      hasLabelForSelected = false;
      dataType = DEFAULT_DATA;
      chart.setValueSelectionEnabled(hasLabelForSelected);

    }

    private void generateDefaultData() {
      int numSubcolumns = 1;
      int numColumns = 8;
      // Column can have many subcolumns, here by default I use 1 subcolumn in each of 8 columns.
      List<Column> columns = new ArrayList<Column>();
      List<ColumnValue> values;
      for (int i = 0; i < numColumns; ++i) {

        values = new ArrayList<ColumnValue>();
        for (int j = 0; j < numSubcolumns; ++j) {
          values.add(new ColumnValue((float) Math.random() * 50f + 5, Utils.pickColor()));
        }

        Column column = new Column(values);
        column.setHasLabels(hasLabels);
        column.setHasLabelsOnlyForSelected(hasLabelForSelected);
        columns.add(column);
      }

      data = new ColumnChartData(columns);

      if (hasAxes) {
        Axis axisX = new Axis();
        Axis axisY = new Axis().setHasLines(true);
        if (hasAxesNames) {
          axisX.setName("Axis X");
          axisY.setName("Axis Y");
        }
        data.setAxisXBottom(axisX);
        data.setAxisYLeft(axisY);
      } else {
        data.setAxisXBottom(null);
        data.setAxisYLeft(null);
      }

      chart.setColumnChartData(data);

    }

    /**
     * Generates columns with subcolumns, columns have larger separation than subcolumns.
     */
    private void generateSubcolumnsData() {
      int numSubcolumns = 4;
      int numColumns = 4;
      // Column can have many subcolumns, here I use 4 subcolumn in each of 8 columns.
      List<Column> columns = new ArrayList<Column>();
      List<ColumnValue> values;
      for (int i = 0; i < numColumns; ++i) {

        values = new ArrayList<ColumnValue>();
        for (int j = 0; j < numSubcolumns; ++j) {
          values.add(new ColumnValue((float) Math.random() * 50f + 5, Utils.pickColor()));
        }

        Column column = new Column(values);
        column.setHasLabels(hasLabels);
        column.setHasLabelsOnlyForSelected(hasLabelForSelected);
        columns.add(column);
      }

      data = new ColumnChartData(columns);

      if (hasAxes) {
        Axis axisX = new Axis();
        Axis axisY = new Axis().setHasLines(true);
        if (hasAxesNames) {
          axisX.setName("Axis X");
          axisY.setName("Axis Y");
        }
        data.setAxisXBottom(axisX);
        data.setAxisYLeft(axisY);
      } else {
        data.setAxisXBottom(null);
        data.setAxisYLeft(null);
      }

      chart.setColumnChartData(data);

    }

    /**
     * Generates columns with stacked subcolumns.
     */
    private void generateStackedData() {
      int numSubcolumns = 4;
      int numColumns = 8;
      // Column can have many stacked subcolumns, here I use 4 stacke subcolumn in each of 4 columns.
      List<Column> columns = new ArrayList<Column>();
      List<ColumnValue> values;
      for (int i = 0; i < numColumns; ++i) {

        values = new ArrayList<ColumnValue>();
        for (int j = 0; j < numSubcolumns; ++j) {
          values.add(new ColumnValue((float) Math.random() * 20f + 5, Utils.pickColor()));
        }

        Column column = new Column(values);
        column.setHasLabels(hasLabels);
        column.setHasLabelsOnlyForSelected(hasLabelForSelected);
        columns.add(column);
      }

      data = new ColumnChartData(columns);

      // Set stacked flag.
      data.setStacked(true);

      if (hasAxes) {
        Axis axisX = new Axis();
        Axis axisY = new Axis().setHasLines(true);
        if (hasAxesNames) {
          axisX.setName("Axis X");
          axisY.setName("Axis Y");
        }
        data.setAxisXBottom(axisX);
        data.setAxisYLeft(axisY);
      } else {
        data.setAxisXBottom(null);
        data.setAxisYLeft(null);
      }

      chart.setColumnChartData(data);
    }

    private void generateNegativeSubcolumnsData() {

      int numSubcolumns = 4;
      int numColumns = 4;
      List<Column> columns = new ArrayList<Column>();
      List<ColumnValue> values;
      for (int i = 0; i < numColumns; ++i) {

        values = new ArrayList<ColumnValue>();
        for (int j = 0; j < numSubcolumns; ++j) {
          int sign = getSign();
          values.add(new ColumnValue((float) Math.random() * 50f * sign + 5 * sign, Utils.pickColor()));
        }

        Column column = new Column(values);
        column.setHasLabels(hasLabels);
        column.setHasLabelsOnlyForSelected(hasLabelForSelected);
        columns.add(column);
      }

      data = new ColumnChartData(columns);

      if (hasAxes) {
        Axis axisX = new Axis();
        Axis axisY = new Axis().setHasLines(true);
        if (hasAxesNames) {
          axisX.setName("Axis X");
          axisY.setName("Axis Y");
        }
        data.setAxisXBottom(axisX);
        data.setAxisYLeft(axisY);
      } else {
        data.setAxisXBottom(null);
        data.setAxisYLeft(null);
      }

      chart.setColumnChartData(data);
    }

    private void generateNegativeStackedData() {

      int numSubcolumns = 4;
      int numColumns = 8;
      // Column can have many stacked subcolumns, here I use 4 stacke subcolumn in each of 4 columns.
      List<Column> columns = new ArrayList<Column>();
      List<ColumnValue> values;
      for (int i = 0; i < numColumns; ++i) {

        values = new ArrayList<ColumnValue>();
        for (int j = 0; j < numSubcolumns; ++j) {
          int sign = getSign();
          values.add(new ColumnValue((float) Math.random() * 20f * sign + 5 * sign, Utils.pickColor()));
        }

        Column column = new Column(values);
        column.setHasLabels(hasLabels);
        column.setHasLabelsOnlyForSelected(hasLabelForSelected);
        columns.add(column);
      }

      data = new ColumnChartData(columns);

      // Set stacked flag.
      data.setStacked(true);

      if (hasAxes) {
        Axis axisX = new Axis();
        Axis axisY = new Axis().setHasLines(true);
        if (hasAxesNames) {
          axisX.setName("Axis X");
          axisY.setName("Axis Y");
        }
        data.setAxisXBottom(axisX);
        data.setAxisYLeft(axisY);
      } else {
        data.setAxisXBottom(null);
        data.setAxisYLeft(null);
      }

      chart.setColumnChartData(data);
    }

    private int getSign() {
      int[] sign = new int[] { -1, 1 };
      return sign[Math.round((float) Math.random())];
    }

    private void generateData() {
      switch (dataType) {
      case DEFAULT_DATA:
        generateDefaultData();
        break;
      case SUBCOLUMNS_DATA:
        generateSubcolumnsData();
        break;
      case STACKED_DATA:
        generateStackedData();
        break;
      case NEGATIVE_SUBCOLUMNS_DATA:
        generateNegativeSubcolumnsData();
        break;
      case NEGATIVE_STACKED_DATA:
        generateNegativeStackedData();
        break;
      default:
        generateDefaultData();
        break;
      }
    }

    private void toggleLabels() {
      hasLabels = !hasLabels;

      if (hasLabels) {
        hasLabelForSelected = false;
        chart.setValueSelectionEnabled(hasLabelForSelected);
      }

      generateData();
    }

    private void toggleLabelForSelected() {
      hasLabelForSelected = !hasLabelForSelected;
      chart.setValueSelectionEnabled(hasLabelForSelected);

      if (hasLabelForSelected) {
        hasLabels = false;
      }

      generateData();
    }

    private void toggleAxes() {
      hasAxes = !hasAxes;

      generateData();
    }

    private void toggleAxesNames() {
      hasAxesNames = !hasAxesNames;

      generateData();
    }

    /**
     * To animate values you have to change targets values and then call {@link Chart#startDataAnimation()}
     * method(don't confuse with View.animate()).
     */
    private void prepareDataAnimation() {
      for (Column column : data.getColumns()) {
        for (ColumnValue value : column.getValues()) {
          value.setTarget((float) Math.random() * 100);
        }
      }
    }

    private class ValueTouchListener implements ColumnChartView.ColumnChartOnValueTouchListener {

      @Override
      public void onValueTouched(int selectedLine, int selectedValue, ColumnValue value) {
        Toast.makeText(getActivity(), "Selected: " + value, Toast.LENGTH_SHORT).show();

      }

      @Override
      public void onNothingTouched() {
        // TODO Auto-generated method stub

      }

    }

  }
}
Java Source Code List
