Android Open Source - customhellochartdemo View Pager Charts 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;
//ww w.ja  v  a 2s.com
import java.util.ArrayList;
import java.util.List;

import lecho.lib.hellocharts.gesture.ContainerScrollType;
import lecho.lib.hellocharts.gesture.ZoomType;
import lecho.lib.hellocharts.model.ArcValue;
import lecho.lib.hellocharts.model.Axis;
import lecho.lib.hellocharts.model.BubbleChartData;
import lecho.lib.hellocharts.model.BubbleValue;
import lecho.lib.hellocharts.model.Column;
import lecho.lib.hellocharts.model.ColumnChartData;
import lecho.lib.hellocharts.model.ColumnValue;
import lecho.lib.hellocharts.model.Line;
import lecho.lib.hellocharts.model.LineChartData;
import lecho.lib.hellocharts.model.PieChartData;
import lecho.lib.hellocharts.model.PointValue;
import lecho.lib.hellocharts.model.Viewport;
import lecho.lib.hellocharts.util.Utils;
import lecho.lib.hellocharts.view.BubbleChartView;
import lecho.lib.hellocharts.view.ColumnChartView;
import lecho.lib.hellocharts.view.LineChartView;
import lecho.lib.hellocharts.view.PieChartView;
import lecho.lib.hellocharts.view.PreviewLineChartView;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RelativeLayout;

public class ViewPagerChartsActivity extends ActionBarActivity implements ActionBar.TabListener {

  /**
   * The {@link android.support.v4.view.PagerAdapter} that will provide fragments for each of the sections. We use a
   * {@link FragmentPagerAdapter} derivative, which will keep every loaded fragment in memory. If this becomes too
   * memory intensive, it may be best to switch to a {@link android.support.v4.app.FragmentStatePagerAdapter}.
   */
  SectionsPagerAdapter mSectionsPagerAdapter;

  /**
   * The {@link ViewPager} that will host the section contents.
   */
  ViewPager mViewPager;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_view_pager_charts);

    // Set up the action bar.
    final ActionBar actionBar = getSupportActionBar();
    actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

    // Create the adapter that will return a fragment for each of the three
    // primary sections of the activity.
    mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());

    // Set up the ViewPager with the sections adapter.
    mViewPager = (ViewPager) findViewById(R.id.pager);
    mViewPager.setAdapter(mSectionsPagerAdapter);

    // When swiping between different sections, select the corresponding
    // tab. We can also use ActionBar.Tab#select() to do this if we have
    // a reference to the Tab.
    mViewPager.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
      @Override
      public void onPageSelected(int position) {
        actionBar.setSelectedNavigationItem(position);
      }
    });

    // For each of the sections in the app, add a tab to the action bar.
    for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
      // Create a tab with text corresponding to the page title defined by
      // the adapter. Also specify this Activity object, which implements
      // the TabListener interface, as the callback (listener) for when
      // this tab is selected.
      actionBar.addTab(actionBar.newTab().setText(mSectionsPagerAdapter.getPageTitle(i)).setTabListener(this));
    }
  }

  @Override
  public void onTabSelected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
    // When the given tab is selected, switch to the corresponding page in
    // the ViewPager.
    mViewPager.setCurrentItem(tab.getPosition());
  }

  @Override
  public void onTabUnselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
  }

  @Override
  public void onTabReselected(ActionBar.Tab tab, FragmentTransaction fragmentTransaction) {
  }

  /**
   * A {@link FragmentPagerAdapter} that returns a fragment corresponding to one of the sections/tabs/pages.
   */
  public class SectionsPagerAdapter extends FragmentPagerAdapter {

    public SectionsPagerAdapter(FragmentManager fm) {
      super(fm);
    }

    @Override
    public Fragment getItem(int position) {
      // getItem is called to instantiate the fragment for the given page.
      // Return a PlaceholderFragment (defined as a static inner class below).
      return PlaceholderFragment.newInstance(position + 1);
    }

    @Override
    public int getCount() {
      return 5;
    }

    @Override
    public CharSequence getPageTitle(int position) {
      switch (position) {
      case 0:
        return "LineChart";
      case 1:
        return "ColumnChart";
      case 2:
        return "BubbleChart";
      case 3:
        return "PreviewLineChart";
      case 4:
        return "PieChart";
      }
      return null;
    }
  }

  /**
   * A placeholder fragment containing a simple view.
   */
  public static class PlaceholderFragment extends Fragment {
    /**
     * The fragment argument representing the section number for this fragment.
     */
    private static final String ARG_SECTION_NUMBER = "section_number";

    /**
     * Returns a new instance of this fragment for the given section number.
     */
    public static PlaceholderFragment newInstance(int sectionNumber) {
      PlaceholderFragment fragment = new PlaceholderFragment();
      Bundle args = new Bundle();
      args.putInt(ARG_SECTION_NUMBER, sectionNumber);
      fragment.setArguments(args);
      return fragment;
    }

    public PlaceholderFragment() {
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
      View rootView = inflater.inflate(R.layout.fragment_view_pager_charts, container, false);
      RelativeLayout layout = (RelativeLayout) rootView;
      int sectionNum = getArguments().getInt(ARG_SECTION_NUMBER);
      switch (sectionNum) {
      case 1:
        LineChartView lineChartView = new LineChartView(getActivity());
        lineChartView.setLineChartData(generateLineChartData());
        lineChartView.setZoomType(ZoomType.HORIZONTAL);

        /** Note: Chart is within ViewPager so enable container scroll mode. **/
        lineChartView.setContainerScrollEnabled(true, ContainerScrollType.HORIZONTAL);

        layout.addView(lineChartView);
        break;
      case 2:
        ColumnChartView columnChartView = new ColumnChartView(getActivity());
        columnChartView.setColumnChartData(generateColumnChartData());
        columnChartView.setZoomType(ZoomType.HORIZONTAL);

        /** Note: Chart is within ViewPager so enable container scroll mode. **/
        columnChartView.setContainerScrollEnabled(true, ContainerScrollType.HORIZONTAL);

        layout.addView(columnChartView);
        break;
      case 3:
        BubbleChartView bubbleChartView = new BubbleChartView(getActivity());
        bubbleChartView.setBubbleChartData(generateBubbleChartData());
        bubbleChartView.setZoomType(ZoomType.HORIZONTAL_AND_VERTICAL);

        /** Note: Chart is within ViewPager so enable container scroll mode. **/
        bubbleChartView.setContainerScrollEnabled(true, ContainerScrollType.HORIZONTAL);

        layout.addView(bubbleChartView);
        break;
      case 4:
        PreviewLineChartView previewLineChartView = new PreviewLineChartView(getActivity());
        previewLineChartView.setLineChartData(generatePreviewLineChartData());

        /** Note: Chart is within ViewPager so enable container scroll mode. **/
        previewLineChartView.setContainerScrollEnabled(true, ContainerScrollType.HORIZONTAL);

        Viewport tempViewport = new Viewport(previewLineChartView.getMaximumViewport());
        float dx = tempViewport.width() / 6;
        tempViewport.inset(dx, 0);
        previewLineChartView.setCurrentViewport(tempViewport, false);
        previewLineChartView.setZoomType(ZoomType.HORIZONTAL);

        layout.addView(previewLineChartView);
        break;
      case 5:
        PieChartView pieChartView = new PieChartView(getActivity());
        pieChartView.setPieChartData(generatePieChartData());

        /** Note: Chart is within ViewPager so enable container scroll mode. **/
        pieChartView.setContainerScrollEnabled(true, ContainerScrollType.HORIZONTAL);

        layout.addView(pieChartView);
        break;
      }

      return rootView;
    }

    private LineChartData generateLineChartData() {
      int numValues = 20;

      List<PointValue> values = new ArrayList<PointValue>();
      for (int i = 0; i < numValues; ++i) {
        values.add(new PointValue(i, (float) Math.random() * 100f));
      }

      Line line = new Line(values);
      line.setColor(Utils.COLOR_GREEN);

      List<Line> lines = new ArrayList<Line>();
      lines.add(line);

      LineChartData data = new LineChartData(lines);
      data.setAxisXBottom(new Axis().setName("Axis X"));
      data.setAxisYLeft(new Axis().setName("Axis Y").setHasLines(true));
      return data;

    }

    private ColumnChartData generateColumnChartData() {
      int numSubcolumns = 1;
      int numColumns = 12;
      // 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()));
        }

        columns.add(new Column(values));
      }

      ColumnChartData data = new ColumnChartData(columns);

      data.setAxisXBottom(new Axis().setName("Axis X"));
      data.setAxisYLeft(new Axis().setName("Axis Y").setHasLines(true));
      return data;

    }

    private BubbleChartData generateBubbleChartData() {
      int numBubbles = 10;

      List<BubbleValue> values = new ArrayList<BubbleValue>();
      for (int i = 0; i < numBubbles; ++i) {
        BubbleValue value = new BubbleValue(i, (float) Math.random() * 100, (float) Math.random() * 1000);
        value.setColor(Utils.pickColor());
        values.add(value);
      }

      BubbleChartData data = new BubbleChartData(values);

      data.setAxisXBottom(new Axis().setName("Axis X"));
      data.setAxisYLeft(new Axis().setName("Axis Y").setHasLines(true));
      return data;
    }

    private LineChartData generatePreviewLineChartData() {
      int numValues = 50;

      List<PointValue> values = new ArrayList<PointValue>();
      for (int i = 0; i < numValues; ++i) {
        values.add(new PointValue(i, (float) Math.random() * 100f));
      }

      Line line = new Line(values);
      line.setColor(Utils.DEFAULT_DARKEN_COLOR);
      line.setHasPoints(false);// too many values so don't draw points.

      List<Line> lines = new ArrayList<Line>();
      lines.add(line);

      LineChartData data = new LineChartData(lines);
      data.setAxisXBottom(new Axis());
      data.setAxisYLeft(new Axis().setHasLines(true));

      return data;

    }

    private PieChartData generatePieChartData() {
      int numValues = 6;

      List<ArcValue> values = new ArrayList<ArcValue>();
      for (int i = 0; i < numValues; ++i) {
        values.add(new ArcValue((float) Math.random() * 30 + 15, Utils.pickColor()));
      }

      PieChartData data = new PieChartData(values);
      return data;
    }

  }

}
Java Source Code List
