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.
3. AbstractDemoChart类是一个抽象类,实现接口IDemoChart接口,这个类中封装了构建DataSet和renderer的方法,目的快速构建我们的dataset和renderer.这个类具体提供了哪些方法呢?见下图.至于为什么要进行这样的封装看完4中ChartFactory.get***Intent()方法的参数类型后您就明白了.
AbstractChartDemo.java:
- package org.achartengine.chartdemo.demo.chart;
- import java.util.Date;
- import java.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 org.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.
- *
- * @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(dataset, 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(titles[i], 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(xV[k], yV[k]);
- }
- 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,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 renderer, int[] colors, PointStyle[] styles) {
- //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(colors[i]);//设置颜色
- r.setPointStyle(styles[i]);
- renderer.addSeriesRenderer(r);
- }
- //-->end
- }
- /**
- * 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 renderer, 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);
- renderer.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<Date[]>作参数.
- *
- * @param titles 序列图例
- * @param xValues X轴值
- * @param yValues Y轴值
- * @return XYMultipleSeriesDataset
- */
- protected XYMultipleSeriesDataset buildDateDataset(String[] titles, List<Date[]> xValues,
- List<double[]> yValues) {
- XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
- int length = titles.length;
- for (int i = 0; i < length; i++) {
- TimeSeries series = new TimeSeries(titles[i]);//构建时间序列TimeSeries,
- Date[] xV = xValues.get(i);
- double[] yV = yValues.get(i);
- int seriesLength = xV.length;
- for (int k = 0; k < seriesLength; k++) {
- series.add(xV[k], yV[k]);
- }
- 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 series
- */
- 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;
- }
- /**
- * 构建MultipleCategorySeries,可用于构建圆环图(每个环是一个序列)
- *
- * @param titles the series titles
- * @param values the values
- * @return the category series
- */
- protected MultipleCategorySeries buildMultipleCategoryDataset(String title,
- List<String[]> titles, List<double[]> values) {
- MultipleCategorySeries series = new MultipleCategorySeries(title);
- int k = 0;
- for (double[] value : values) {
- 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);
- renderer.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
- * @return 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(titles[i]);
- double[] v = values.get(i);
- int seriesLength = v.length;
- for (int k = 0; k < seriesLength; k++) {
- series.add(v[k]);
- }
- 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 buildBarRenderer(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++) {
- SimpleSeriesRenderer r = new SimpleSeriesRenderer();
- r.setColor(colors[i]);
- 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,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.Intent |
getBarChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer,BarChart.Type type) |
条形图 |
static android.content.Intent |
getBarChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer,BarChart.Type type, java.lang.String activityTitle) |
条形图 |
static GraphicalView |
getBarChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer,BarChart.Type type) |
气泡图 |
static android.content.Intent |
getBubbleChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) |
气泡图 |
static android.content.Intent |
getBubbleChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String activityTitle) |
气泡图 |
static GraphicalView |
getBubbleChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) |
组合图 |
static android.content.Intent |
getCombinedXYChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String[] types, java.lang.String activityTitle) |
组合图 |
static GraphicalView |
getCombinedXYChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String[] types) |
立方折线图 |
static GraphicalView |
getCubeLineChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, float smoothness) |
立方折线图 |
static android.content.Intent |
getCubicLineChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, float smoothness) |
立方折线图 |
static android.content.Intent |
getCubicLineChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, float smoothness, java.lang.String activityTitle) |
拨号盘 |
static android.content.Intent |
getDialChartIntent(android.content.Context context,CategorySeries dataset, DialRenderer renderer, java.lang.String activityTitle) |
拨号盘 |
static GraphicalView |
getDialChartView(android.content.Context context, CategorySeries dataset,DialRenderer renderer) |
圆环图 |
static android.content.Intent |
getDoughnutChartIntent(android.content.Context context,MultipleCategorySeries dataset, DefaultRenderer renderer, java.lang.String activityTitle) |
圆环图 |
static GraphicalView |
getDoughnutChartView(android.content.Context context,MultipleCategorySeries dataset, DefaultRenderer renderer) |
圆环图 |
static android.content.Intent |
getLineChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) |
折线图 |
static android.content.Intent |
getLineChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String activityTitle) |
折线图 |
static GraphicalView |
getLineChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) |
饼图 |
static android.content.Intent |
getPieChartIntent(android.content.Context context, CategorySeries dataset,DefaultRenderer renderer, java.lang.String activityTitle) |
饼图 |
static GraphicalView |
getPieChartView(android.content.Context context, CategorySeries dataset,DefaultRenderer renderer) |
范围条形图 |
static android.content.Intent |
getRangeBarChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer,BarChart.Type type, java.lang.String activityTitle) |
范围条形图 |
static GraphicalView |
getRangeBarChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer,BarChart.Type type) |
散点图 |
static android.content.Intent |
getScatterChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) |
散点图 |
static android.content.Intent |
getScatterChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String activityTitle) |
散点图 |
static GraphicalView |
getScatterChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer) |
时间图 |
static android.content.Intent |
getTimeChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String format) |
时间图 |
static android.content.Intent |
getTimeChartIntent(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String format, java.lang.String activityTitle) |
时间图 |
static GraphicalView |
getTimeChartView(android.content.Context context,XYMultipleSeriesDataset dataset, XYMultipleSeriesRenderer renderer, java.lang.String format) |
http://blog.csdn.net/lk_blog/article/details/7645509
安卓图表引擎AChartEngine(二) - 示例源码概述和分析
http://blog.csdn.net/lk_blog/article/details/7642751
安卓图表引擎AChartEngine(三) - 示例源码折线图、饼图和柱状图
http://blog.csdn.net/lk_blog/article/details/7645668
安卓图表引擎AChartEngine(四) - 源码示例嵌入Acitivity中的折线图
http://blog.csdn.net/lk_blog/article/details/7645665
安卓图表引擎AChartEngine(五) - Render和Dataset参数介绍
http://blog.csdn.net/lk_blog/article/details/7645661