アンドロイド：データセットとレンダラーはヌルでなく、同じ数のシリーズを持つ必要があります

Question

`* //私は線グラフを実装しています。
//エラー：データセットとレンダラーがヌルでなく、同じ数のシリーズを持つ必要があります
//これを理解できませんか？誰でも助けてくれますか？これにより

Intent intent = ChartFactory.getLineChartIntent(context, buildDateDataset 
(titles, x, values),renderer, ""); 
return intent; 

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]); 
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; 
} 

In the linechart line i am sending the param values. On that my app is crashing. 
I also added XYMultipleSeriesDataset code. 

My execute function. In this function i am getting x and y values. 

List<Date[]> x = new ArrayList<Date[]>(); 
List<double[]> values = new ArrayList<double[]>(); 

double price[] = new double[PriceData.size()]; 
System.out.println("Print :" + price); 
Date priceDt[] = new Date[PriceData.size()]; 
System.out.println("Print :" + priceDt); 

for(int i = 0; i <titles.length; i++) 
{ 
for (int j = 0; j < PriceData.size(); j++) 
{ 
date = PriceData.get(j).PriceDt; 
System.out.println(date); 
Date d = new Date(date); //check it 
System.out.println(d); 
priceDt[j] = d; 
x.add(priceDt);  
} 
} 
for (int i = 0; i < PriceData.size(); i++) 
{ 
//date = date.replace("/", ""); 
System.out.println(PriceData.get(i).Price); 
System.out.println(PriceData.get(i).PriceDt); 
price[i] = Double.valueOf(PriceData.get(i).Price); 
values.add(price); 
} 
int[] colors = new int[] { Color.CYAN,Color.GREEN}; 
// PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE}; 
PointStyle[] styles = new PointStyle[] { PointStyle.CIRCLE,PointStyle.POINT}; 
XYMultipleSeriesRenderer renderer = buildRenderer(colors, styles); 
int length = renderer.getSeriesRendererCount(); 
for (int i = 0; i < length; i++) 
{ 
((XYSeriesRenderer) renderer.getSeriesRendererAt(i)).setFillPoints(true); 
} 
setChartSettings(renderer, "", "Month", "price", 0, 12, 0, 190, 
Color.GREEN, Color.GREEN); 
renderer.setXLabels(PriceData.size()); 
renderer.setYLabels(PriceData.size());  
renderer.setShowGrid(false); 
renderer.setXLabelsAlign(Align.RIGHT); 
renderer.setYLabelsAlign(Align.RIGHT); 
renderer.setApplyBackgroundColor(true); 
renderer.setBackgroundColor(Color.WHITE); 
renderer.setMarginsColor(Color.WHITE); 
//renderer.setAxisTitleTextSize(15); 
renderer.setMargins(new int[] {10, 40, 10, 10}); 
renderer.setZoomButtonsVisible(true); 
renderer.setPanLimits(new double[] { -10, 20, -10, 40 }); 
renderer.setZoomLimits(new double[] { -10, 20, -10, 40 }); 
Intent intent = ChartFactory.getLineChartIntent(context, 
buildDateDataset(titles, x, values), renderer, ""); 
return intent; 
} 
} 

Answer 1

あなたが他の活動が必要とされない、xに任意のスレッドまたはループ
のY値を与える折れ線グラフを描くことができます。それを試してみてください

public class Test extends Activity { 
    private XYMultipleSeriesDataset mDataset = new XYMultipleSeriesDataset(); 
    private XYMultipleSeriesRenderer mRenderer = new XYMultipleSeriesRenderer(); 
    private XYSeries mCurrentSeries; 
    private XYSeriesRenderer mCurrentRenderer; 
    private GraphicalView mChartView; 
    int x,y; 
    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 


     mRenderer.setPanLimits(new double[] { 00,600 , 00, 300 });  //xmin,xmax,ymin,ymax bars/grids limit 
     mRenderer.setZoomLimits(new double[] { 00, 200, 00, 30 });  //xmin,xmax,ymin,ymax zoom limit 
     String seriesTitle = "Series " + (mDataset.getSeriesCount() + 1); 
     XYSeries series = new XYSeries(seriesTitle); 
     mDataset.addSeries(series); 
     mCurrentSeries = series; 
     mRenderer.setYLabelsAlign(Align.RIGHT); 
     XYSeriesRenderer renderer = new XYSeriesRenderer(); 
     mRenderer.addSeriesRenderer(renderer); 
     mCurrentRenderer = renderer; 


     if(mChartView== null){ 

      //ADD VALUE OF X,Y HERE to the series 
      mCurrentSeries.add(x,y); 

      if (mChartView != null) { 
       mChartView.repaint(); 
      } 
      mChartView = ChartFactory.getLineChartView(Test.this, mDataset, mRenderer); 
      mChartView.addPanListener(new PanListener() { 
        public void panApplied() { 
         System.out.println("New X range=[" + mRenderer.getXAxisMin() + ", " + mRenderer.getXAxisMax() 
          + "], Y range=[" + mRenderer.getYAxisMax() + ", " + mRenderer.getYAxisMax() + "]"); 
        } 
        }); 
      //ADDING YOUR VIEW TO ANY LAYOUT adding in xml 
      layout.addView(mChartView, new LayoutParams(LayoutParams.FILL_PARENT,400)); 

     } 



     // TODO Auto-generated method stub 
    } 

} 

は、いくつかのコードを共有してくださいのmanifest.xmlファイルに

<activity android:name="org.achartengine.GraphicalActivity" />