图表引擎AChartEngine 一

MainActivity.java

package com.example.achartengine0;

import org.achartengine.ChartFactory;
import org.achartengine.GraphicalView;
import org.achartengine.chart.BarChart.Type;

import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.Menu;
import android.widget.LinearLayout;

public class MainActivity extends Activity {
	private Context context;
	private LinearLayout layout0, layout1, layout2, layout3;
	private String chartName0, chartName1;
	private GraphicalView lView, bView;
	private int number;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		context = MainActivity.this;
		layout0 = (LinearLayout) findViewById(R.id.container0);
		layout1 = (LinearLayout) findViewById(R.id.container1);
		layout2 = (LinearLayout) findViewById(R.id.container2);
		layout3 = (LinearLayout) findViewById(R.id.container3);
		for (number = 0; number <= 2; number++)
			initGraphicalView(number);

	}

	public void initGraphicalView(int number) {
		String[] xlab = new String[] { "一月", "二月", "", "三月", "四月", "五月" };
		int[] value = new int[] { 20, 30, 40, 30, 10, 20 };
		ChartDrawing chartDrawing = new ChartDrawing("图" + number, "日期", "数值",
				xlab);
		chartDrawing.setXYSeries(value, "线" + number);
		chartDrawing.setXYMultipleSeriesRenderer(
				chartDrawing.setXYSeriesRender(), number);
		switch (number) {
		case 0:
			lView = ChartFactory.getLineChartView(context,
					chartDrawing.multiDate, chartDrawing.multiRenderer);
			layout0.addView(lView);
			break;
		case 1:
			lView = ChartFactory.getLineChartView(context,
					chartDrawing.multiDate, chartDrawing.multiRenderer);
			layout1.addView(lView);
			break;
		case 2:
			lView = ChartFactory.getBarChartView(context,
					chartDrawing.multiDate, chartDrawing.multiRenderer,
					Type.DEFAULT);
			layout2.addView(lView);
			break;
		}

	}

}

AChartDrawing.java

package com.example.achartengine0;

import org.achartengine.chart.PointStyle;
import org.achartengine.model.CategorySeries;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.model.XYSeries;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
import org.achartengine.renderer.XYSeriesRenderer;

import android.graphics.Color;
import android.graphics.Paint.Align;
import android.graphics.Paint.Style;

public class ChartDrawing {
	private String chartName;
	private String xTitle;
	private String yTitle;
	private String[] xLabels;
	public XYMultipleSeriesDataset multiDate ;//需要在构造函数中初始化，不然main函数调用时是Null
	public XYMultipleSeriesRenderer multiRenderer ;
	public CategorySeries date;

	public ChartDrawing(String chartName,String xTitle, String yTitle, String[] xLabels ) {
		super();
		this.chartName=chartName;
		this.xTitle = xTitle;
		this.yTitle = yTitle;
		this.xLabels  = xLabels;
		multiDate=new XYMultipleSeriesDataset();
		multiRenderer=new XYMultipleSeriesRenderer();
		date=new CategorySeries(yTitle);
	}

	public void setXYSeries(int[] value,String lName){//设置点的值
		XYSeries xySeries=new XYSeries(lName);//某条线的点线对象
		for(int i=0;i<value.length;i++){
			xySeries.add(i+1, value[i]);
		}
		multiDate.addSeries(xySeries);//把所有点添加到数据集
	}
	public XYSeriesRenderer setXYSeriesRender(){//点线的渲染，返回  点线渲染  对象
		XYSeriesRenderer pointRender=new XYSeriesRenderer();
		pointRender.setPointStyle(PointStyle.CIRCLE);
		pointRender.setFillPoints(false);
		pointRender.setLineWidth(2f);
		pointRender.setColor(Color.RED);
 		pointRender.setDisplayChartValues(true);

		return pointRender;
	}
	public void setXYMultipleSeriesRenderer(XYSeriesRenderer pointRender,int number ){//坐标轴图形整体渲染。传入的参数是  点线渲染  对象
		multiRenderer.setChartTitle(chartName);//设置图表标题
		 multiRenderer.setShowGrid(true);//显示网格
		 multiRenderer.setPointSize(3f);//设置点的大小 ！
		 multiRenderer.setChartTitleTextSize(20);//设置图表标题文字的大小
		 multiRenderer.setLabelsTextSize(15);//设置标签的文字大小
		 multiRenderer.setXLabelsAlign(Align.CENTER);//刻度线与刻度标注之间的相对位置关系
		 multiRenderer.setPanEnabled(true, false);//允许左右拖动,但不允许上下拖动.
		 multiRenderer.setZoomEnabled(false);//设置允许放大缩小.
		 multiRenderer.setXTitle(xTitle);
		 multiRenderer.setYTitle(yTitle);
		 multiRenderer.setMarginsColor(Color.WHITE);//设置空白区（图表区域外）背景色， 默认是黑色

	 /**设置整体渲染中图表区域内背景色
	  *  multiRenderer.setApplyBackgroundColor(true);
		 multiRenderer.setBackgroundColor(Color.argb(0, 220, 228, 234) );
		 multiRenderer.setMarginsColor(Color.argb(0, 220, 228, 234));
	  */

		switch(number){
		case 0://最基本情形 折线图，设置Y轴坐标数10
			multiRenderer.setYLabels(10);
			multiRenderer.setZoomButtonsVisible(true);//显示放大缩小的功能栏
			break;
		case 1://自定义X轴坐标 折线图，不设置Y坐标数，隐藏Y轴！ 遗留问题：自定义某个轴后，某个轴对应的网格背景就木有了。。
			 multiRenderer.setXLabels(0);//这样才能显示我们自定义的x轴
			 multiRenderer.setYLabels(0);
			 multiRenderer.setYTitle("");
			 setXLabels(xLabels);
			break;
		case 2://柱形图
			multiRenderer.setBarSpacing(1.5);
			break;

		}

		 multiRenderer.addSeriesRenderer(pointRender);
	}
	public void setXLabels(String[] xl){
		for(int i=0;i<xl.length;i++)
			multiRenderer.addXTextLabel(i+1, xl[i]);
	}

}