AChartEngine当用之BarChart（柱形图）

AChartEngine应用之BarChart（柱形图）
AChartEngine应用之BarChart（柱形图）

接着上文，构建柱形图的步骤和构建饼图的步骤一样，主要分为以下三步，还需要在项目中引入AChartEngine依赖jar包，在Manifest中添加：<activityandroid:name="org.achartengine.GraphicalActivity" />

1.设置XYMultipleSeriesRenderer主要描绘器

XYMultipleSeriesRenderer renderer = buildBarRenderer(colors);// 柱形图颜色设置

setChartSettings(renderer, "柱形图示例", "月份", "数量", 0.5, 12.5, 0, 2400,

Color.GRAY, Color.LTGRAY);// 设置柱形图标题，横轴（X轴）、纵轴（Y轴）、最小的伸所刻度、最大的伸所刻度

renderer.getSeriesRendererAt(0).setDisplayChartValues(true);// 在第0条柱形图上显示数据

renderer.getSeriesRendererAt(1).setDisplayChartValues(true);// 在第1条柱形图上显示数据

renderer.setXLabels(12);

renderer.setYLabels(10);

renderer.setXLabelsAlign(Align.LEFT);// 数据从左到右显示

renderer.setYLabelsAlign(Align.LEFT);

renderer.setPanEnabled(true, false);

renderer.setZoomEnabled(true);

renderer.setZoomButtonsVisible(true);// 显示放大缩小功能按钮

renderer.setZoomRate(1.1f);

renderer.setBarSpacing(0.5f);// 柱形图间隔

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2.构建数据源XYMultipleSeriesDataset

protected XYMultipleSeriesDataset buildBarDataset(String[] titles,

List<double[]> values) {//柱形图的数据源和饼图差不多，也是由一些键值对组成

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;

}

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3.通过ChartFactory获取柱形图

mChartView = ChartFactory.getBarChartView(getApplicationContext(),

buildBarDataset(titles, values), renderer, Type.DEFAULT);

renderer.setClickEnabled(true);

//renderer.set

mLinear.addView(mChartView, new LayoutParams(

LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));

运行效果图：

code

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package com.qiuzhping.achart;import java.util.ArrayList;import java.util.List;import org.achartengine.ChartFactory;import org.achartengine.GraphicalView;import org.achartengine.chart.BarChart.Type;import org.achartengine.model.CategorySeries;import org.achartengine.model.XYMultipleSeriesDataset;import org.achartengine.renderer.SimpleSeriesRenderer;import org.achartengine.renderer.XYMultipleSeriesRenderer;import android.app.Activity;import android.content.Intent;import android.graphics.Color;import android.graphics.Paint.Align;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.ViewGroup.LayoutParams;import android.widget.LinearLayout;public class BarChartBuilder extends Activity {private GraphicalView mChartView;public void back(View v) {Log.i("qiuzhping", "back onClick");Intent intent = new Intent();intent.setClass(BarChartBuilder.this, MainActivity.class);startActivity(intent);BarChartBuilder.this.finish();}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);}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;}protected XYMultipleSeriesDataset buildBarDataset(String[] titles,List<double[]> values) {//柱形图的数据源和饼图差不多，也是由一些键值对组成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;}@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.xy_chart);LinearLayout mLinear = (LinearLayout) findViewById(R.id.chart);mLinear.setBackgroundColor(Color.BLACK);String[] titles = new String[] { "2012", "2013" };List<double[]> values = new ArrayList<double[]>();values.add(new double[] { 1423, 1230, 1424, 1524, 1590, 1920, 2203,2120, 1950, 1550, 1260, 1400 });values.add(new double[] { 523, 730, 924, 1054, 790, 920, 1200, 1100,950, 1500, 1100, 1500 });int[] colors = new int[] { Color.RED, Color.BLUE };XYMultipleSeriesRenderer renderer = buildBarRenderer(colors);// 柱形图颜色设置setChartSettings(renderer, "柱形图示例", "月份", "数量", 0.5, 12.5, 0, 2400,Color.GRAY, Color.LTGRAY);// 设置柱形图标题，横轴（X轴）、纵轴（Y轴）、最小的伸所刻度、最大的伸所刻度renderer.getSeriesRendererAt(0).setDisplayChartValues(true);// 在第0条柱形图上显示数据renderer.getSeriesRendererAt(1).setDisplayChartValues(true);// 在第1条柱形图上显示数据renderer.setXLabels(12);renderer.setYLabels(10);renderer.setXLabelsAlign(Align.LEFT);// 数据从左到右显示renderer.setYLabelsAlign(Align.LEFT);renderer.setPanEnabled(true, false);renderer.setZoomEnabled(true);renderer.setZoomButtonsVisible(true);// 显示放大缩小功能按钮renderer.setZoomRate(1.1f);renderer.setBarSpacing(0.5f);// 柱形图间隔if (mChartView == null) {// 构建柱形图mChartView = ChartFactory.getBarChartView(getApplicationContext(),buildBarDataset(titles, values), renderer, Type.DEFAULT);renderer.setClickEnabled(true);//renderer.setmLinear.addView(mChartView, new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT));} elsemChartView.repaint();}}

对应的完整项目：http://download.csdn.net/detail/qiu_11/6854803

未完待续。。。。。

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AChartEngine应用系列文章

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（一）AChartEngine简介

（二）AChartEngine应用之PieChart（饼图）

（三）AChartEngine应用之BarChart（柱形图）

（四）AChartEngine应用之PieChart（动态饼图，允许产生动态数据并显示）

（五）AChartEngine应用之LineChart（模拟生命特征值图）

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