我在android中使用了achartengine库。每次我尝试运行我的Android应用程序时，我都会收到此错误
java.lang.IllegalArgumentException：数据集和渲染器不应该为空，并且应该具有相同数量的系列
我对这个问题的理解是说我有一个以上的XYMultipleSeriesRenderer和一个XYMultipleSeriesDataset。但在我的代码中我只能找到1个。我很抱歉，如果这是一个愚蠢的问题，但我有点吓坏了因为我的应用程序已经过了它的截止日期，我无法弄清楚为什么它一直给我这个问题。
这是我的代码。对不起，这很麻烦，在很多地方可能没有意义，但如果有人愿意提供帮助，我会很乐意解释我在某些地方要做的事情。
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.RangeCategorySeries;
import org.achartengine.model.XYMultipleSeriesDataset;
import org.achartengine.model.XYSeries;
import org.achartengine.renderer.XYMultipleSeriesRenderer;
import org.achartengine.renderer.XYSeriesRenderer;
import android.content.Context;
import android.graphics.Color;
import android.graphics.Paint.Align;
public class BarGraph {
String title, realTitle;
double[] y;
int ySize;
double largest = 0.0, smallest = 0.0;
int[] colors;
RangeCategorySeries series;
XYMultipleSeriesRenderer mRenderer = new XYMultipleSeriesRenderer();
XYSeriesRenderer renderer = new XYSeriesRenderer();
public GraphicalView getView(Context context, int width) {
// Bar 1
List<double[]> linevalues = new ArrayList<double[]>();
linevalues.add(new double[] { 0, 0, 0, 0, 0, 0 });
XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
dataset.addSeries(series.toXYSeries());
for (int i = 0; i < 10; i++) {
XYSeries yseries = new XYSeries("Demo series " + (i + 1));
for (int k = 0; k < GlobalVar.cropList.size(); k++) {
series.add(k, i);
}
dataset.addSeries(yseries);
}
// This is what the "Graph" itself will look like
int flag = 0;
// mRenderer.setXTitle("\n\n\n\n\n\n\n\n\n\nCrops");
mRenderer.setXLabels(0);
int marginT = 20, marginL = 100, marginB = 100, marginR = 0;
if (width <= 960)
flag = 0;
else if (width > 960 && width < 1120)
flag = 1;
else
flag = 2;
switch (flag) {
case 0:
mRenderer.setLabelsTextSize(20);
mRenderer.setAxisTitleTextSize(20);
renderer.setChartValuesTextSize(20);
mRenderer.setChartTitleTextSize(30);
mRenderer.setBarSpacing(.001);
mRenderer.setXAxisMax(5);
marginT = 40;
marginL = 100;
marginB = 75;
marginR = 0;
break;
case 1:
mRenderer.setLabelsTextSize(25);
mRenderer.setAxisTitleTextSize(20);
renderer.setChartValuesTextSize(20);
mRenderer.setBarSpacing(.5);
mRenderer.setChartTitleTextSize(30);
mRenderer.setXAxisMax(GlobalVar.cropList.size() + 1);
marginT = 40;
marginL = 100;
marginB = 75;
marginR = 0;
break;
case 2:
mRenderer.setLabelsTextSize(35);
mRenderer.setAxisTitleTextSize(30);
renderer.setChartValuesTextSize(35);
mRenderer.setChartTitleTextSize(30);
mRenderer.setBarSpacing(.5);
mRenderer.setXAxisMax(GlobalVar.cropList.size() + 1);
marginT = 40;
marginL = 100;
marginB = 75;
marginR = 0;
break;
}
int[] margins = { marginT, marginL, marginB, marginR };
// mRenderer.setLabelsTextSize(35);
// mRenderer.setAxisTitleTextSize(30);
mRenderer.setYTitle(title + " ($/acre)");
mRenderer.setAxesColor(Color.BLACK);
mRenderer.setLabelsColor(Color.BLACK);
mRenderer.setXLabelsColor(Color.BLACK);
mRenderer.setChartTitle(title);
mRenderer.setMargins(margins);
mRenderer.setApplyBackgroundColor(true);
mRenderer.setBackgroundColor(context.getResources().getColor(
R.color.graphBG));
mRenderer.setPanEnabled(true, false);
mRenderer.setClickEnabled(false);
mRenderer.setZoomButtonsVisible(false);
mRenderer.setZoomEnabled(true, false);
mRenderer.setBarWidth(40);
// mRenderer.setXLabels(0);
mRenderer.setXAxisMin(0);
mRenderer.setXLabelsAngle(30);
mRenderer.setYAxisMax((((int) Math.ceil(largest / 100)) * 100) + 50);
mRenderer.setMarginsColor(context.getResources().getColor(
R.color.marginColor));
// mRenderer.setChartTitleTextSize(20);
mRenderer.setShowLabels(true);
mRenderer.setShowLegend(false);
mRenderer.setYLabelsAlign(Align.RIGHT);
mRenderer.setYLabelsColor(0, Color.BLACK);
if (smallest > 0)
mRenderer.setYAxisMin(0);
else
mRenderer.setYAxisMin(smallest - 50);
// Customize bar 1
renderer.setDisplayChartValues(true);
renderer.setChartValuesSpacing((float) 5.5);
renderer.setColor(Color.parseColor("#800000"));
renderer.setChartValuesTextAlign(Align.CENTER);
mRenderer.addSeriesRenderer(renderer);
return ChartFactory.getRangeBarChartView(context, dataset, mRenderer, Type.DEFAULT);
}
@SuppressWarnings("deprecation")
public void isReturnsOverTotal(Boolean returnsTot) {
y = new double[GlobalVar.cropList.size()];
// colors = new int[GlobalVar.cropList.size()];
double largestOT = 0.0, smallestOT = 0;
double largestOV = 0.0, smallestOV = 0;
String placeholder = "";
if (returnsTot) {
series = new RangeCategorySeries("Returns Over Total Costs");
// this.setChartSettings(mRenderer, "Returns Over Total Costs",
// "Returns Over Variable Costs", "", .5, 12.5, smallest, largest,
// Color.GRAY, Color.LTGRAY);
for (int i = 0; i < GlobalVar.cropList.size(); i++) {
placeholder = GlobalVar.cropList.get(i).getTableCropName()
.replaceAll(" ", "\n");
y[i] = GlobalVar.cropList.get(i).getReturnOverTotal();
if (y[i] > 0)
series.add(0, y[i]);
else
series.add(y[i], 0);
if (y[i] > largestOT)
largestOT = y[i];
else if (y[i] < smallestOT)
smallestOT = y[i];
mRenderer.addTextLabel(i + 1, placeholder);
}
title = "Returns Over Total Costs";
} else {
series = new RangeCategorySeries("Returns Over Variable Costs");
for (int i = 0; i < GlobalVar.cropList.size(); i++) {
placeholder = GlobalVar.cropList.get(i).getTableCropName()
.replaceAll(" ", "\n");
y[i] = GlobalVar.cropList.get(i).getReturnOverVariable();
if (y[i] > 0)
series.add(0, y[i]);
else
series.add(y[i], 0);
if (y[i] > largestOV)
largestOV = y[i];
else if (y[i] < smallestOT)
smallestOT = y[i];
mRenderer.addTextLabel(i + 1, placeholder);
}
title = " Returns Over Variable Costs";
}
smallest += smallestOV;
smallest += smallestOT;
largest += largestOV;
largest += largestOT;
}
}
答案 0 :(得分：2)
您要向XYSeries添加11个XYMultipleSeriesDataset个对象，一个在for循环之前，另一个在循环内。每个XYSeries都应该有相应的XYSeriesRenderer，但XYMultipleSeriesRenderer只添加了一个此类对象。