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

時間 2021-08-15

標籤 java android 框架 ide this get 源碼欄目 Android 简体版

原文原文鏈接

折線圖：java

[java] view plain copy

package org.achartengine.chartdemo.demo.chart;
import java.util.ArrayList;
import java.util.List;
import org.achartengine.ChartFactory;
import org.achartengine.chart.PointStyle;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
import org.achartengine.renderer.XYSeriesRenderer;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.Paint.Align;
public class AverageTemperatureChart extends AbstractDemoChart {
public String getName() {
return "Average temperature";
}
public String getDesc() {
return "The average temperature in 4 Greek islands (line chart)";
}
public Intent execute(Context context) {
String[] titles = new String[] { "Crete", "Corfu", "Thassos", "Skiathos" };//圖例
List<double[]> x = new ArrayList<double[]>();
for (int i = 0; i < titles.length; i++) {
x.add(new double[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 });//每一個序列中點的X座標
}
List<double[]> values = new ArrayList<double[]>();
values.add(new double[] { 12.3, 12.5, 13.8, 16.8, 20.4, 24.4, 26.4, 26.1, 23.6, 20.3, 17.2,
13.9 });//序列1中點的y座標
values.add(new double[] { 10, 10, 12, 15, 20, 24, 26, 26, 23, 18, 14, 11 });//序列2中點的Y座標
values.add(new double[] { 5, 5.3, 8, 12, 17, 22, 24.2, 24, 19, 15, 9, 6 });//序列3中點的Y座標
values.add(new double[] { 9, 10, 11, 15, 19, 23, 26, 25, 22, 18, 13, 10 });//序列4中點的Y座標
int[] colors = new int[] { Color.BLUE, Color.GREEN, Color.CYAN, Color.YELLOW };//每一個序列的顏色設置
PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE, PointStyle.DIAMOND,
PointStyle.TRIANGLE, PointStyle.SQUARE };//每一個序列中點的形狀設置
XYMultipleSeriesRenderer renderer = buildRenderer(colors, styles);//調用AbstractDemoChart中的方法設置renderer.
int length = renderer.getSeriesRendererCount();
for (int i = 0; i < length; i++) {
((XYSeriesRenderer) renderer.getSeriesRendererAt(i)).setFillPoints(true);//設置圖上的點爲實心
}
setChartSettings(renderer, "Average temperature", "Month", "Temperature", 0.5, 12.5, -10, 40,
Color.LTGRAY, Color.LTGRAY);//調用AbstractDemoChart中的方法設置圖表的renderer屬性.
renderer.setXLabels(12);//設置x軸顯示12個點,根據setChartSettings的最大值和最小值自動計算點的間隔
renderer.setYLabels(10);//設置y軸顯示10個點,根據setChartSettings的最大值和最小值自動計算點的間隔
renderer.setShowGrid(true);//是否顯示網格
renderer.setXLabelsAlign(Align.RIGHT);//刻度線與刻度標註之間的相對位置關係
renderer.setYLabelsAlign(Align.CENTER);//刻度線與刻度標註之間的相對位置關係
renderer.setZoomButtonsVisible(true);//是否顯示放大縮小按鈕
renderer.setPanLimits(new double[] { -10, 20, -10, 40 }); //設置拖動時X軸Y軸容許的最大值最小值.
renderer.setZoomLimits(new double[] { -10, 20, -10, 40 });//設置放大縮小時X軸Y軸容許的最大最小值.
Intent intent = ChartFactory.getLineChartIntent(context, buildDataset(titles, x, values),
renderer, "Average temperature111");//構建Intent
return intent;
}
}

餅圖：android

[java] view plain copy

package org.achartengine.chartdemo.demo.chart;
import org.achartengine.ChartFactory;
import org.achartengine.renderer.DefaultRenderer;
import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
public class BudgetPieChart extends AbstractDemoChart {
public String getName() {
return "Budget chart";
}
public String getDesc() {
return "The budget per project for this year (pie chart)";
}
public Intent execute(Context context) {
double[] values = new double[] { 12, 14, 11, 10, 19 };//餅圖分層5塊,每塊表明的數值
int[] colors = new int[] { Color.BLUE, Color.GREEN, Color.MAGENTA, Color.YELLOW, Color.CYAN };//每塊餅圖的顏色
DefaultRenderer renderer = buildCategoryRenderer(colors);
renderer.setZoomButtonsVisible(true);//設置顯示放大縮小按鈕
renderer.setZoomEnabled(true);//設置容許放大縮小.
renderer.setChartTitleTextSize(20);//設置圖表標題的文字大小
return ChartFactory.getPieChartIntent(context, buildCategoryDataset("Project budget", values),
renderer, "Budget");//構建Intent, buildCategoryDataset是調用AbstraDemoChart的構建方法.
}
}

柱狀圖：框架

[java] view plain copy

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 };//兩種柱子的顏色
XYMultipleSeriesRenderer renderer = buildBarRenderer(colors);//調用AbstractDemoChart中的方法構建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中的方法設置renderer的一些屬性.
renderer.getSeriesRendererAt(0).setDisplayChartValues(true);//設置柱子上是否顯示數量值
renderer.getSeriesRendererAt(1).setDisplayChartValues(true);//設置柱子上是否顯示數量值
renderer.setXLabels(12);//X軸的近似座標數
renderer.setYLabels(5);//Y軸的近似座標數
renderer.setXLabelsAlign(Align.LEFT);//刻度線與X軸座標文字左側對齊
renderer.setYLabelsAlign(Align.LEFT);//Y軸與Y軸座標文字左對齊
renderer.setPanEnabled(true, false);//容許左右拖動,但不容許上下拖動.
// 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);//構建Intent, buildBarDataset是調用AbstractDemochart中的方法.
}
}