线图不可见。仅可以看到具有X和Y轴的图形布局

Question

我正在创建一个折线图，其中X轴为日期，Y轴为double值。以前我的X轴只包含整数，然后图表可见。现在只显示带有x和Y轴的布局。我该如何解决这个问题？

public class GraphActivity extends Activity {
private GraphicalView mChart;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_graph); 

        Bundle extras=getIntent().getExtras();
        double[] TArray=extras.getDoubleArray("tempArray");
        Log.d("1000", String.valueOf(TArray.length));
        String[] TSArray=extras.getStringArray("dateArray");
        Log.d("1002", String.valueOf(TSArray.length));


         int dateArraySize=TArray.length;
         Date dateArray[]=new Date[TArray.length];
        String[] targetArr = TSArray;
        SimpleDateFormat df = new SimpleDateFormat("dd-MM-yyyy hh:mm:ss");
        for (int i=0;i<TArray.length;i++)
        {
        Date result = null;
        try {
            result = df.parse(targetArr[i]);
        } catch (ParseException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        dateArray[i]=result;
        }
        for(Date element:dateArray){
              Log.d("1005", element.toString());
        }



         TimeSeries series=new TimeSeries("Temperature");

         for(int i=0;i<TArray.length;i++){
             try{
             series.add(dateArray[i],TArray[i]);
            Log.i("series_add1:", "fyn");
             }catch(Exception ex){
                 Log.e("series_add2", "not added to the timeseries");
             }



             }

         XYMultipleSeriesDataset dataset=new XYMultipleSeriesDataset();
         Log.d("dataset1", "before adding to dataset");
         dataset.addSeries(series);
         Log.d("dataset2", "after adding to dataset");


          //properties of line 
         XYSeriesRenderer renderer =new XYSeriesRenderer();
         renderer.setColor(Color.YELLOW);
         renderer.setPointStyle(PointStyle.DIAMOND);
         renderer.setFillPoints(true);
         final NumberFormat tempValueFormat=new DecimalFormat("##.##");
         renderer.setChartValuesFormat(tempValueFormat);
         renderer.setChartValuesTextSize(20);
         renderer.setDisplayChartValues(true);
         renderer.setChartValuesSpacing((float)0.5);
         renderer.setChartValuesTextSize(20);




         XYMultipleSeriesRenderer mRenderer=new XYMultipleSeriesRenderer();
         mRenderer.setXRoundedLabels(false);
         mRenderer.addSeriesRenderer(renderer);
         mRenderer.setBackgroundColor(Color.BLACK);
         mRenderer.setPointSize(5);
         mRenderer.setLabelsColor(Color.GREEN);
         mRenderer.setChartTitle("TEMPERATURE LINE GRAPH");
         mRenderer.setChartTitleTextSize(30);
         mRenderer.setAxesColor(Color.WHITE);
         mRenderer.setApplyBackgroundColor(true);
         mRenderer.setAxisTitleTextSize(25);
         mRenderer.setXTitle("TIME");
         mRenderer.setYTitle("TEMPERATURE");
         mRenderer.setZoomButtonsVisible(true);
         mRenderer.setXLabelsAngle(10);
         mRenderer.setYLabelsAlign(Align.LEFT);
         mRenderer.setYLabels(15);
         mRenderer.setXLabels(15);
         mRenderer.setXLabelsAlign(Align.RIGHT);
         mRenderer.setYLabelsAngle(10);
         mRenderer.setXAxisMin(0);
            mRenderer.setXAxisMax(30);
            mRenderer.setShowGridX(true);
             mRenderer.setShowGridY(true);



         /* for(int i=0;i<tempArray.length;i++)
             {
              mRenderer.addXTextLabel(i, " :temp");

             }
*/          LinearLayout layout=(LinearLayout)findViewById(R.id.lineGraph);
          mChart = (GraphicalView)ChartFactory.getTimeChartView(this, dataset,mRenderer,"dd-MM-yyyy hh:mm:ss");
          layout.addView(mChart);
          if(mChart==null){
              Log.i("mChart: ", "null");
          }
          else{
              Log.i("mChart: ", "not null but not displaying graph");
          }

    }




}