安卓图表引擎AChartEngine(二) - 示例源码概述和分析

1、首先看一下示例中类之间的关系:1. ChartDemo这个类是整个应用程序的入口,运行之后的效果显示一个list.2. IDemoChart接口,这个接口定义了三个方法,getName(返回值是listitem上显示的标题;getDesc(返回值是listitem上显示的描述内容.excute(context返回值是一个Intent,当点击listitem后跳转到此Intent.Table 1 AbstractChartDemo.javapackage com.crelead.plantrack2mobile_alpha1; import java.util.Date; import java

2、.util.List; import org.achartengine.chart.PointStyle; import org.achartengine.model.CategorySeries; import org.achartengine.model.MultipleCategorySeries; import org.achartengine.model.TimeSeries; import org.achartengine.model.XYMultipleSeriesDataset; import org.achartengine.model.XYSeries; import or

3、g.achartengine.renderer.DefaultRenderer; import org.achartengine.renderer.SimpleSeriesRenderer; import org.achartengine.renderer.XYMultipleSeriesRenderer; import org.achartengine.renderer.XYSeriesRenderer; public abstract class AbstractDemoChart implements IDemoChart /* * 构建 XYMultipleSeriesDataset.

4、 * * param titles 每个序列的图例 * param xValues X轴的坐标 * param yValues Y轴的坐标 * return XYMultipleSeriesDataset */ protected XYMultipleSeriesDataset buildDataset(String titles, List<double> xValues, List<double> yValues XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset(; addXYSeries(d

5、ataset, titles, xValues, yValues, 0; return dataset; /向DataSet中添加序列.public void addXYSeries(XYMultipleSeriesDataset dataset, String titles, List<double> xValues, List<double> yValues, int scale int length = titles.length; for (int i = 0; i < length; i+ XYSeries series = new XYSeries(t

6、itlesi, scale; /这里注意与TimeSeries区别. double xV = xValues.get(i; double yV = yValues.get(i; int seriesLength = xV.length; for (int k = 0; k < seriesLength; k+ series.add(xVk, yVk; dataset.addSeries(series; /* * 构建XYMultipleSeriesRenderer. * * param colors 每个序列的颜色 * param styles 每个序列点的类型(可设置三角,圆点,菱形,

7、方块等多种 * return XYMultipleSeriesRenderer */ protected XYMultipleSeriesRenderer buildRenderer(int colors, PointStyle styles XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer(; setRenderer(renderer, colors, styles; return renderer; protected void setRenderer(XYMultipleSeriesRenderer rend

8、erer, int colors, PointStyle styles /size size=3/整个图表属性设置 /->start renderer.setAxisTitleTextSize(16;/设置轴标题文字的大小 renderer.setChartTitleTextSize(40;/设置整个图表标题文字的大小 renderer.setLabelsTextSize(15;/设置轴刻度文字的大小 renderer.setLegendTextSize(15;/设置图例文字大小 renderer.setPointSize(5f;/设置点的大小(图上显示的点的大小和图例中点的大小都会被设

9、置 renderer.setMargins(new int 20, 30, 15, 20 ;/设置图表的外边框(上/左/下/右 /->end /以下代码设置没个序列的颜色. /->start int length = colors.length; for (int i = 0; i < length; i+ XYSeriesRenderer r = new XYSeriesRenderer(; r.setColor(colorsi;/设置颜色 r.setPointStyle(stylesi; renderer.addSeriesRenderer(r; /->end /*

10、 设置renderer的一些属性. * * param renderer 要设置的renderer * param title 图表标题 * param xTitle X轴标题 * param yTitle Y轴标题 * param xMin X轴最小值 * param xMax X轴最大值 * param yMin Y轴最小值 * param yMax Y轴最大值 * param axesColor X轴颜色 * param labelsColor Y轴颜色 */ protected void setChartSettings(XYMultipleSeriesRenderer rendere

11、r, String title, String xTitle, String yTitle, double xMin, double xMax, double yMin, double yMax, int axesColor, int labelsColor renderer.setChartTitle(title; renderer.setXTitle(xTitle; renderer.setYTitle(yTitle; renderer.setXAxisMin(xMin; renderer.setXAxisMax(xMax; renderer.setYAxisMin(yMin; rende

12、rer.setYAxisMax(yMax; renderer.setAxesColor(axesColor; renderer.setLabelsColor(labelsColor; /* 构建和时间有关的XYMultipleSeriesDataset,这个方法与buildDataset在参数上区别是需要List 作参数. * * param titles 序列图例 * param xValues X轴值 * param yValues Y轴值 * return XYMultipleSeriesDataset */ protected XYMultipleSeriesDataset build

13、DateDataset(String titles, List xValues, List<double> yValues XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset(; int length = titles.length; for (int i = 0; i < length; i+ TimeSeries series = new TimeSeries(titlesi;/构建时间序列TimeSeries, Date xV = xValues.get(i; double yV = yValues

14、.get(i; int seriesLength = xV.length; for (int k = 0; k < seriesLength; k+ series.add(xVk, yVk; dataset.addSeries(series; return dataset; /* * 构建单个CategorySeries,可用于生成饼图,注意与buildMultipleCategoryDataset(构建圆环图相区别. * * param titles the series titles * param values the values * return the category se

15、ries */ protected CategorySeries buildCategoryDataset(String title, double values CategorySeries series = new CategorySeries(title; int k = 0; for (double value : values series.add("Project " + +k, value; return series; /size size=3 /* 构建MultipleCategorySeries,可用于构建圆环图(每个环是一个序列 * * param t

16、itles the series titles * param values the values * return the category series */ protected MultipleCategorySeries buildMultipleCategoryDataset(String title, List titles, List< double> values MultipleCategorySeries series = new MultipleCategorySeries(title; int k = 0; for (double value : value

17、s series.add(2007 + k + "", titles.get(k, value; k+; return series; /* * 构建DefaultRenderer. * * param colors 每个序列的颜色 * return DefaultRenderer */ protected DefaultRenderer buildCategoryRenderer(int colors DefaultRenderer renderer = new DefaultRenderer(; renderer.setLabelsTextSize(15; render

18、er.setLegendTextSize(15; renderer.setMargins(new int 20, 30, 15, 0 ; for (int color : colors SimpleSeriesRenderer r = new SimpleSeriesRenderer(; r.setColor(color; renderer.addSeriesRenderer(r; return renderer; /* 构建XYMultipleSeriesDataset,适用于柱状图. * * param titles 每中柱子序列的图列 * param values 柱子的高度值 * re

19、turn XYMultipleSeriesDataset */ protected XYMultipleSeriesDataset buildBarDataset(String titles, List<double> values XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset(; int length = titles.length; for (int i = 0; i < length; i+ CategorySeries series = new CategorySeries(titlesi;

20、 double v = values.get(i; int seriesLength = v.length; for (int k = 0; k < seriesLength; k+ series.add(vk; dataset.addSeries(series.toXYSeries(; return dataset; /* 构建XYMultipleSeriesRenderer,适用于柱状图. * * param colors 每个序列的颜色 * return XYMultipleSeriesRenderer */ protected XYMultipleSeriesRenderer b

21、uildBarRenderer(int colors XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer(; renderer.setAxisTitleTextSize(16; renderer.setChartTitleTextSize(20; renderer.setLabelsTextSize(15; renderer.setLegendTextSize(15; int length = colors.length; for (int i = 0; i < length; i+ SimpleSeriesR

22、enderer r = new SimpleSeriesRenderer(; r.setColor(colorsi; renderer.addSeriesRenderer(r; return renderer; 4. 其他的以*Chat结尾的类大都继承自AbstractDemoChart这个类实现了接口IDemoChart.我们可以重点看一下execute(context方法,分析之后发现这个方法中构建Intent的步骤大同小异,第一步构建dataset,第二步构建renderer,第三步调用ChartFactory.get*Intent(方法或ChartFactory.get*View(方法

23、,二者的区别在于一个返回Intent,这个intent可以启动一个特定的activity,另一个返回GraphicalView,对这个GraphicalView可以灵活设置也可以仅作为一部分显示在任何activity上.对于ChartFactory.get*Intent(上的参数activityTitle是指设置显示在activity上的标题.条形图static android.content.IntentgetBarChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSe

24、riesRenderer renderer,BarChart.Type type条形图static android.content.IntentgetBarChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer,BarChart.Type type, java.lang.String activityTitle条形图static GraphicalViewgetBarChartView(android.content.Contex

25、t context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer,BarChart.Typetype气泡图static android.content.IntentgetBubbleChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer气泡图static android.content.IntentgetBubbleChartIntent(an

26、droid.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String activityTitle气泡图static GraphicalViewgetBubbleChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRendererrenderer组合图static android.content.Intentg

27、etCombinedXYChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String types, java.lang.String activityTitle组合图static GraphicalViewgetCombinedXYChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleS

28、eriesRenderer renderer, java.lang.String types立方折线图static GraphicalViewgetCubeLineChartView(android.content.Context context,XYMultipleSeriesDatasetdataset, XYMultipleSeriesRendererrenderer, float smoothness立方折线图static android.content.IntentgetCubicLineChartIntent(android.content.Context context,XYMu

29、ltipleSeriesDataset dataset, XYMultipleSeriesRendererrenderer, float smoothness立方折线图static android.content.IntentgetCubicLineChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, float smoothness, java.lang.String activityTitle拨号盘static andro

30、id.content.IntentgetDialChartIntent(android.content.Context context,CategorySeries dataset, DialRenderer renderer, java.lang.String activityTitle拨号盘static GraphicalViewgetDialChartView(android.content.Context context, CategorySeries dataset,DialRenderer renderer圆环图static android.content.IntentgetDou

31、ghnutChartIntent(android.content.Context context,MultipleCategorySeries dataset, DefaultRenderer renderer, java.lang.String activityTitle圆环图static GraphicalViewgetDoughnutChartView(android.content.Context context,MultipleCategorySeries dataset, DefaultRenderer renderer圆环图static android.content.Inten

32、tgetLineChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer折线图static android.content.IntentgetLineChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String activityTitle折

33、线图static GraphicalViewgetLineChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer饼图static android.content.IntentgetPieChartIntent(android.content.Context context, CategorySeries dataset,DefaultRenderer renderer, java.lang.String activityTitle饼图

34、static GraphicalViewgetPieChartView(android.content.Context context, CategorySeries dataset,DefaultRenderer renderer范围条形图static android.content.IntentgetRangeBarChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer,BarChart.Type type, java.lang.String activityTitle范围条形图static GraphicalViewgetRangeBarChar