Android中使用achartengine生成图表的具体方法

package com.meritit.footlottery.view;

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

import android.content.Context;
import android.graphics.Color;
import android.view.View;

public class PieChart {
 public View execute(Context context) {
  int[] colors = new int[] { Color.RED, Color.YELLOW, Color.BLUE };
  DefaultRenderer renderer = buildCategoryRenderer(colors);
  CategorySeries categorySeries = new CategorySeries("Vehicles Chart");
  categorySeries.add("胜 ", 30);
  categorySeries.add("负", 20);
  categorySeries.add("平", 60);
  return ChartFactory
    .getPieChartView(context, categorySeries, renderer);
 }

 protected DefaultRenderer buildCategoryRenderer(int[] colors) {
  DefaultRenderer renderer = new DefaultRenderer();
  for (int color : colors) {
   SimpleSeriesRenderer r = new SimpleSeriesRenderer();
   r.setColor(color);
   renderer.addSeriesRenderer(r); 
  }
  //显示标签
  renderer.setShowLabels(true);
  //不显示底部说明
  renderer.setShowLegend(false);
  //设置标签字体大小
  renderer.setLabelsTextSize(15);
  renderer.setLabelsColor(Color.BLACK);
  renderer.setZoomEnabled(false);
  renderer.setPanEnabled(false);
  return renderer;
 }
}

//View pieChart = new PieChart().execute(this);
//chartArea.addView(pieChart);

package com.meritit.footlottery.view;

import java.util.Random;

import org.achartengine.ChartFactory;
import org.achartengine.chart.BarChart.Type;
import org.achartengine.model.CategorySeries;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.renderer.DefaultRenderer;
import org.achartengine.renderer.SimpleSeriesRenderer;
import org.achartengine.renderer.XYMultipleSeriesRenderer;

import com.meritit.footlottery.R;

import android.content.Context;
import android.graphics.Color;
import android.view.View;

public class BarChart {
 private Context context;
 public View execute(Context context) {
  this.context = context;
  return ChartFactory
    .getBarChartView(context, getBarDemoDataset(), getBarDemoRenderer(), Type.DEFAULT);
 }

    /**
     * XYMultipleSeriesDataset 类型的对象，用于提供图表需要表示的数据集，
     * 这里我们用 getBarDemoDataset 来得到它。
     */ 
    private XYMultipleSeriesDataset getBarDemoDataset() { 
        XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset(); 
        final int nr = 10; 
        Random r = new Random(); 
        for (int i = 0; i < 3; i++) { 
            CategorySeries series = new CategorySeries("球队 " + (i + 1)); 
            for (int k = 0; k < nr; k++) { 
                series.add(100 + r.nextInt() % 100); 
            } 
            dataset.addSeries(series.toXYSeries()); 
        } 
        return dataset; 
    }

    /**
     * XYMultipleSeriesRenderer 类型的对象，用于提供图表展现时的一些样式，
     * 这里我们用 getBarDemoRenderer 方法来得到它。
     * getBarDemoRenderer 方法构建了一个 XYMultipleSeriesRenderer 用来设置2个系列各自的颜色
     */ 
    public XYMultipleSeriesRenderer getBarDemoRenderer() { 
        XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer(); 
        SimpleSeriesRenderer r = new SimpleSeriesRenderer(); 
        r.setColor(Color.BLUE); 
        renderer.addSeriesRenderer(r); 
        r = new SimpleSeriesRenderer(); 
        r.setColor(Color.GREEN); 
        renderer.addSeriesRenderer(r);
        r = new SimpleSeriesRenderer(); 
        r.setColor(Color.RED); 
        renderer.addSeriesRenderer(r);
        renderer.setApplyBackgroundColor(true);
        renderer.setBackgroundColor(Color.TRANSPARENT);
        renderer.setMarginsColor(context.getResources().getColor(R.color.main_background_color));
        renderer.setZoomEnabled(false, false);
        renderer.setPanEnabled(false, false);
        renderer.setLabelsTextSize(15);
  renderer.setLabelsColor(Color.BLACK);
        setChartSettings(renderer); 
        return renderer; 
    }

    /**
     * setChartSettings 方法设置了下坐标轴样式。
     */ 
    private void setChartSettings(XYMultipleSeriesRenderer renderer) { 
        renderer.setChartTitle("战绩分析"); 
        renderer.setXTitle("横坐标"); 
        renderer.setYTitle("纵坐标"); 
        renderer.setXAxisMin(0.5); 
        renderer.setXAxisMax(10.5); 
        renderer.setYAxisMin(0); 
        renderer.setYAxisMax(210); 
    } 
}