AChartEngine上的錯誤（線圖）

Question

我在圖形上添加圖形佈局時出現了一個我無法解決的異常問題。使用getBarChartView()工程，但當我更改爲getLineChartView問題發生。下面是一個例子。

public class MainActivity extends Activity { 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     final GraphicalView gv =createIntent();  
     RelativeLayout rl=(RelativeLayout)findViewById(R.id.lytGraficoVendaDiariaBarra); 
     rl.addView(gv);     
    } 

    @Override 
    public boolean onCreateOptionsMenu(Menu menu) { 
     getMenuInflater().inflate(R.menu.activity_main, menu); 
     return true; 
    } 
    public GraphicalView createIntent() { 
     String[] titulos = new String[] { "Valor Faturado" };  
     int[] colors = new int[] { Color.parseColor("#0066FF")};   
     XYMultipleSeriesRenderer renderer = buildBarRenderer(colors); 
     List<double[]> valores = new ArrayList<double[]>(); 
     valores.add(new double[] { 5230, 7300, 9240, 10230, 11300, 10040}); 
     renderer.setXLabels(1); 
     renderer.setYLabels(10);  
     renderer.addXTextLabel(1, "01/12"); 
     renderer.addXTextLabel(2, "02/12"); 
     renderer.addXTextLabel(3, "03/12"); 
     renderer.addXTextLabel(4, "04/12"); 
     renderer.addXTextLabel(5, "05/12"); 
     renderer.addXTextLabel(6, "06/12");  
     renderer.addXTextLabel(7, "07/12");  
     int length = renderer.getSeriesRendererCount(); 
     for (int i = 0; i < length; i++) {  
      SimpleSeriesRenderer seriesRenderer = renderer.getSeriesRendererAt(i); 
      seriesRenderer.setDisplayChartValues(true);   
     } 

//  final GraphicalView grfv = ChartFactory.getBarChartView(getBaseContext(), buildBarDataset(titulos, valores), renderer, Type.DEFAULT); 
     final GraphicalView grfv = ChartFactory.getLineChartView(getBaseContext(), buildBarDataset(titulos, valores), renderer); 

     return grfv; 
     }  

    protected XYMultipleSeriesRenderer buildBarRenderer(int[] colors) { 
     XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();  
     renderer.setAxisTitleTextSize(15);  
     renderer.setChartTitleTextSize(20);  
     renderer.setLabelsTextSize(10);    
     renderer.setLegendTextSize(15);  
     renderer.setBarSpacing(1);  
     renderer.setMarginsColor(Color.parseColor("#E0E0E0"));  
     renderer.setXLabelsColor(Color.BLACK);  
     renderer.setYLabelsColor(0,Color.BLACK);     
     renderer.setApplyBackgroundColor(true);  
     renderer.setBackgroundColor(Color.parseColor("#FBFBFC"));  
     renderer.setOrientation(Orientation.HORIZONTAL);   
     renderer.setZoomButtonsVisible(true); 
     int length = colors.length;  
     for (int i = 0; i < length; i++) {   
      SimpleSeriesRenderer col = new SimpleSeriesRenderer();   
      col.setColor(colors[i]);     
      col.setChartValuesSpacing(15); 
      renderer.addSeriesRenderer(col);  
     }  
     setChartSettings(renderer, "Vendas Diárias", "Dias", "Valores", 0.5, 12.5, 0, 24000, Color.BLACK, Color.BLACK);  
     return renderer;  
     }  
    protected XYMultipleSeriesDataset buildBarDataset(String[] titulos, List<double[]> valores) { 
     XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();  
     int length = titulos.length;  
     for (int i = 0; i < length; i++) { 
      CategorySeries series = new CategorySeries(titulos[i]);  
      double[] v = valores.get(i);  
      int seriesLength = v.length;  
      for (int k = 0; k < seriesLength; k++) { 
       series.add(v[k]);   
       }   
      dataset.addSeries(series.toXYSeries());  
      }   
     return dataset;  
    } 
    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.setYLabelsAlign(Align.RIGHT); 
     renderer.setXTitle(xTitle);  
     renderer.setYTitle(yTitle);  
     renderer.setXAxisMin(xMin);   
     renderer.setXAxisMax(xMax);   
     renderer.setYAxisMin(yMin);  
     renderer.setYAxisMax(yMax);  
     renderer.setMargins(new int[] { 30, 40, 10, 40 });  
     renderer.setAxesColor(axesColor);  
     renderer.setLabelsColor(labelsColor);      
    } 
} 

佈局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/lytGraficoVendaDiariaBarra" 
    android:layout_width="match_parent" 
    android:orientation="horizontal" 
    android:layout_height="match_parent" > 
</RelativeLayout> 

Answer 1

您從AChartEngine演示覆制buildBarDataset()和buildBarRenderer()。折線圖使用buildDataset()和buildRenderer()。