Android Open Source - Twitter-News Chart Fragment

From Project

Back to project page Twitter-News.
License

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

package com.kaplandroid.twitternews.ui.statistics;
//from   ww w.j ava2s . c  o m
import java.util.List;

import org.achartengine.ChartFactory;
import org.achartengine.GraphicalView;
import org.achartengine.model.CategorySeries;
import org.achartengine.model.SeriesSelection;
import org.achartengine.renderer.DefaultRenderer;
import org.achartengine.renderer.SimpleSeriesRenderer;

import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.LinearLayout;
import android.widget.Toast;

import com.kaplandroid.twitternews.R;
import com.kaplandroid.twitternews.model.ChartModel;

/**
 * 
 * @author KAPLANDROID
 * 
 */
public class ChartFragment extends Fragment {

  /** Colors to be used for the pie slices. */
  private static int[] COLORS = new int[] { Color.GREEN, Color.BLUE, Color.MAGENTA, Color.CYAN };
  /** The main series that will include all the data. */
  private CategorySeries mSeries = new CategorySeries("");
  /** The main renderer for the main dataset. */
  private DefaultRenderer mRenderer = new DefaultRenderer();
  /** The chart view that displays the data. */
  private GraphicalView mChartView;

  View fragmentContent;
  List<ChartModel> list;

  public static ChartFragment newInstance(List<ChartModel> list) {
    ChartFragment fr = new ChartFragment();
    fr.list = list;
    return fr;
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    fragmentContent = inflater.inflate(R.layout.fragment_chart, container, false);
    mRenderer.setZoomButtonsVisible(true);
    mRenderer.setStartAngle(180);
    mRenderer.setDisplayValues(true);
    LinearLayout layout = (LinearLayout) fragmentContent.findViewById(R.id.chart);
    mChartView = ChartFactory.getPieChartView(getActivity(), mSeries, mRenderer);
    layout.addView(mChartView, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));

    for (ChartModel item : list) {
      addNew(item.getFeedbackName(), item.getTotalCount());
    }

    return fragmentContent;
  }

  private void addNew(String name, double value) {
    mSeries.add(name, value);
    SimpleSeriesRenderer renderer = new SimpleSeriesRenderer();
    renderer.setColor(COLORS[(mSeries.getItemCount() - 1) % COLORS.length]);
    mRenderer.addSeriesRenderer(renderer);
    mChartView.repaint();
  }

  @Override
  public void onResume() {
    super.onResume();
    if (mChartView == null) {
      LinearLayout layout = (LinearLayout) fragmentContent.findViewById(R.id.chart);
      mChartView = ChartFactory.getPieChartView(getActivity(), mSeries, mRenderer);
      mRenderer.setClickEnabled(true);
      mChartView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
          SeriesSelection seriesSelection = mChartView.getCurrentSeriesAndPoint();
          if (seriesSelection == null) {
            Toast.makeText(getActivity(), "No chart element selected", Toast.LENGTH_SHORT).show();
          } else {
            for (int i = 0; i < mSeries.getItemCount(); i++) {
              mRenderer.getSeriesRendererAt(i).setHighlighted(i == seriesSelection.getPointIndex());
            }
            mChartView.repaint();
            Toast.makeText(
                getActivity(),
                "Chart data point index " + seriesSelection.getPointIndex() + " selected"
                    + " point value=" + seriesSelection.getValue(), Toast.LENGTH_SHORT).show();
          }
        }
      });
      layout.addView(mChartView, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
    } else {
      mChartView.repaint();
    }
  }
}
Java Source Code List
