安卓圖表引擎AChartEngine(三) - 示例源碼折線圖、餅圖和柱狀圖

[img]https://img-my.csdn.net/uploads/201206/08/1339140332_9510.jpg[/img]

[img]https://img-my.csdn.net/uploads/201206/08/1339140629_5237.jpg[/img]

[img]https://img-my.csdn.net/uploads/201206/08/1339140587_8411.jpg[/img]

package org.achartengine.chartdemo.demo.chart;

import java.util.ArrayList;

import java.util.List;

import org.achartengine.ChartFactory;

import org.achartengine.chart.BarChart.Type;

import org.achartengine.renderer.XYMultipleSeriesRenderer;

import android.content.Context;

import android.content.Intent;

import android.graphics.Color;

import android.graphics.Paint.Align;

public class SalesStackedBarChart extends AbstractDemoChart {

public String getName() {

return "Sales stacked bar chart";

}

public String getDesc() {

return "The monthly sales for the last 2 years (stacked bar chart)";

}

public Intent execute(Context context) {

String[] titles = new String[] { "2008", "2007" };//圖例

List<double[]> values = new ArrayList<double[]>();

values.add(new double[] { 14230, 12300, 14240, 15244, 15900, 19200, 22030, 21200, 19500, 15500,

12600, 14000 });//第一種柱子的數值

values.add(new double[] { 5230, 7300, 9240, 10540, 7900, 9200, 12030, 11200, 9500, 10500,

11600, 13500 });//第二中柱子的數值

int[] colors = new int[] { Color.BLUE, Color.CYAN };//兩種柱子的顔色

XYMultipleSeriesRenderer renderer = buildBarRenderer(colors);//調用AbstractDemoChart中的方法建構renderer.

setChartSettings(renderer, "Monthly sales in the last 2 years", "Month", "Units sold", 0.5,

12.5, 0, 24000, Color.GRAY, Color.LTGRAY);//調用AbstractDemoChart中的方法設定renderer的一些屬性.

renderer.getSeriesRendererAt(0).setDisplayChartValues(true);//設定柱子上是否顯示數量值

renderer.getSeriesRendererAt(1).setDisplayChartValues(true);//設定柱子上是否顯示數量值

renderer.setXLabels(12);//X軸的近似坐标數

renderer.setYLabels(5);//Y軸的近似坐标數

renderer.setXLabelsAlign(Align.LEFT);//刻度線與X軸坐标文字左側對齊

renderer.setYLabelsAlign(Align.LEFT);//Y軸與Y軸坐标文字左對齊

renderer.setPanEnabled(true, false);//允許左右拖動,但不允許上下拖動.

// renderer.setZoomEnabled(false);

renderer.setZoomRate(1.1f);//放大的倍率

renderer.setBarSpacing(0.5f);//柱子間寬度

return ChartFactory.getBarChartIntent(context, buildBarDataset(titles, values), renderer,

Type.STACKED);//建構Intent, buildBarDataset是調用AbstractDemochart中的方法.

}

}