android绘画折线图一

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;

import org.achartengine.ChartFactory;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.model.XYSeries;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
import org.achartengine.renderer.XYSeriesRenderer;

import android.app.ListActivity;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.ListView;
import android.widget.SimpleAdapter;

public class MyPaintActivity extends ListActivity {
    //参考地址  http://www.eoeandroid.com/forum.php?mod=viewthread&tid=98457
    private static final int SERIES_NR = 2;
    private ArrayList<Map<String, String>> maps = new ArrayList<Map<String, String>>();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
//         setContentView(R.layout.main);
        // 加入ListItem “调度查询”
        HashMap<String, String> map = new HashMap<String, String>();
        map.put("name", "折线图");
        map.put("desc", "显示折线图");
        maps.add(map);
        // 构建listView的适配器
        SimpleAdapter adapter = new SimpleAdapter(this, maps,
                android.R.layout.simple_list_item_2, new String[] { "name",
                        "desc" }, new int[] { android.R.id.text1,
                        android.R.id.text2 });
        // SDK库中提供的一个包含两个TextView的layout new String[]{"name","desc"},
        // maps中的两个key new int[]{android.R.id.text1,android.R.id.text2}
        // 两个TextView的id );
        this.setListAdapter(adapter);
    }

    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        // TODO Auto-generated method stub
        super.onListItemClick(l, v, position, id);
        try {
            Intent intent = ChartFactory.getLineChartIntent(MyPaintActivity.this, getDataset(),
                    getRenderer());
            startActivity(intent);            
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    private XYMultipleSeriesDataset getDataset() {
        XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
        final int nr = 10;
        // 每个系列种包含10个随机数
        Random r = new Random();
        for (int i = 0; i < SERIES_NR; i++) {
            // 新建一个系列（线条）
            XYSeries series = new XYSeries("Series" + (i + 1));
            for (int k = 0; k < nr; k++) {
                int x = r.nextInt() % 10;
                // x：0-10之间的随机整数
                int y = 50 + r.nextInt() % 50;
                // y:50-100之间的随机整数
                series.add(x, y);
                // 往系列中加入一个随机分布的点
            }
            // 把添加了点的折线放入dataset 
            dataset.addSeries(series);
        }
        return dataset;
    }

    public XYMultipleSeriesRenderer getRenderer() {
        // 新建一个xymultipleseries
        XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
        renderer.setAxisTitleTextSize(16);
        // 设置坐标轴标题文本大小
        renderer.setChartTitleTextSize(20);
        // 设置图表标题文本大小
        renderer.setLabelsTextSize(15);
        // 设置轴标签文本大小
        renderer.setLegendTextSize(15);
        // 设置图例文本大小
        renderer.setMargins(new int[] { 20, 30, 15, 0 });
        // 设置4边留白
        // 设置一个系列的颜色为蓝色
        XYSeriesRenderer r = new XYSeriesRenderer();
        r.setColor(Color.BLUE);
        // 往xymultiplerender中增加一个系列
        renderer.addSeriesRenderer(r);
        // 设置另一个系列的颜色为红色
        r = new XYSeriesRenderer();
        r.setColor(Color.GREEN);
        // 往xymultiplerender中增加另一个系列
        renderer.addSeriesRenderer(r);
        return renderer;
    }
}

<activity android:name="org.achartengine.GraphicalActivity">