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   源码介绍

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需要将雨量数据库 放在该app对应目录下测试

package inter.face.monitor;

import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;

import org.achartengine.ChartFactory;
import org.achartengine.GraphicalView;
import org.achartengine.chart.BarChart.Type;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.model.XYSeries;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
import org.achartengine.renderer.XYSeriesRenderer;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.database.sqlite.SQLiteDatabase;
import android.graphics.Color;
import android.graphics.Paint.Align;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.TextView;
import inter.face.monitor.DB.SqliteHelper;
import inter.face.monitor.bean.Element;
import inter.face.monitor.common.PickDataFromDB;


public class EastOceanPeninsulaActivity extends Activity {

	private String[] XTitles = new String[] { "硅 (二氧化硅)", "溶解氧", "氨氮", "亞硝酸鹽氮", "正磷酸堕磷", "懸浮固體", "硝酸鹽氮", "無機氮" };
	private LinearLayout barchart;
	private TextView 	time_show;
	private int current_int = 1;
	private Timer timer = new Timer();
	private TimerTask task;
	private Handler handler;
	private XYMultipleSeriesRenderer renderer;
	private XYMultipleSeriesDataset dataset;
	private GraphicalView barchartview;
	private List<Element>  list ;
	private Element e;
	private PickDataFromDB pick =new PickDataFromDB();
	private String tablename ="water_quality_east_oceam_peninsula";
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		barchart = (LinearLayout) findViewById(R.id.barliner);
		time_show = (TextView) findViewById(R.id.time_show);
		SqliteHelper help  = new SqliteHelper(getApplicationContext());
        SQLiteDatabase db = help.getWritableDatabase();
         list = pick.getRawValue(db, tablename,current_int);
         e = list.get(0);
        current_int =1;
        double[]  yvalues = new double[]{e.getGui(),e.getRjy(),e.getAd(),e.getYxsdd(),e.getZlsjl(),e.getXfgt(),e.getXsdd(),e.getWjd()};
    	// ====================renderer ================
        renderer = new XYMultipleSeriesRenderer();
        pick.RendererModle(renderer,e.getDistrict());
		for (int i = 0; i < XTitles.length; i  ) {
			renderer.addXTextLabel(i, XTitles[i]);
		}
		XYSeriesRenderer yrender = new XYSeriesRenderer();
		yrender.setColor(Color.GREEN);
		yrender.setDisplayChartValues(true);
		renderer.addSeriesRenderer(yrender);
		
		//-------------------------------------------------dataset---------------------------------------------
		time_show.setText(e.getDate());
		dataset = new XYMultipleSeriesDataset();
		XYSeries series = new XYSeries("含量(毫克/升）");
		for( int i=0;i<yvalues.length;i  ){
			series.add(i,yvalues[i]);
			
		}
		dataset.addSeries(series);
     
         barchartview = ChartFactory.getBarChartView(getApplicationContext(), dataset, renderer, Type.DEFAULT);
        barchart.addView(barchartview);
		handler = new Handler() {// 这里的Handler实例将配合下面的Timer实例，完成更新图表的功能
			@SuppressLint("HandlerLeak")
			@Override
			public void handleMessage(Message msg) {
				if (msg.what == 1) {
					updatechart();// 刷新图表具体方法 Handler将此并入主线程
				}
				super.handleMessage(msg);
			}
		};
		task = new TimerTask() {
			@Override
			public void run() {// 通过消息更新
				Log.i("task", " task ok ");
				Message message = new Message();
				message.what = 1;// 消息定义标志
				handler.sendMessage(message);
			}
		};

		timer.schedule(task, 5000, 5000);// 执行任务
	}
	@Override
	protected void onDestroy() {
	     timer.cancel();
	     Log.i("timer", "timer cancel");
		super.onDestroy();
	}


	public void updatechart() {
		list.clear();
		dataset.clear();
		SqliteHelper help  = new SqliteHelper(getApplicationContext());
        SQLiteDatabase db = help.getWritableDatabase();
        list = pick.getRawValue(db, tablename,current_int);
        e = list.get(0);
        current_int =1;
        double[]  yvalues = new double[]{e.getGui(),e.getRjy(),e.getAd(),e.getYxsdd(),e.getZlsjl(),e.getXfgt(),e.getXsdd(),e.getWjd()};
    	XYSeriesRenderer yrender = new XYSeriesRenderer();
		yrender.setColor(Color.GREEN);
		yrender.setDisplayChartValues(true);
		renderer.addSeriesRenderer(yrender);
		XYSeries series = new XYSeries("含量(毫克/升）");
		for( int i=0;i<yvalues.length;i  ){
			series.add(i,yvalues[i]);
		}
		time_show.setText(e.getDate());
		dataset.addSeries(series);
         barchartview.repaint();
	}
}