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实际上我正在尝试创建一个条形图。但是我通过使用它从 Web 服务获取 x 和 y 轴值。

从 Web 服务获取值没有问题，但我只是怀疑将这些值传递给条形图以创建条形图。

因为，在我的模拟器运行后，我提供了正确的输入，如果我尝试调用“调用”按钮，它只显示空白屏幕..但我需要绘制一个条形图。如何做到这一点?

请给点建议......

感谢您宝贵的时间！..

请找到我的参考资料

图表.java

public class Chart extends Activity 
{
EditText edt1, edt2;
TextView txtv1;
Button btn;

int orderNo = 0;
int freightRate = 0;
int marginPercent;

@Override
public void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    edt1 = (EditText) findViewById(R.id.editText1);
    edt2 = (EditText) findViewById(R.id.editText2);

    btn = (Button) findViewById(R.id.button1);
    btn.setOnClickListener(new View.OnClickListener() 
    {

        public void onClick(View v) 
        {
            getTMSChart(edt1.getText().toString(), edt2.getText().toString());

            Intent intnt = new Intent(v.getContext(), BarGraphActivity.class);

            intnt.putExtra("orderNo", orderNo); 
            intnt.putExtra("freightRate", freightRate);
            //intnt.putExtra("marginPercent", marginPercent);

            startActivity(intnt);
        }
    });
}

public void getTMSChart(String FromDate, String ToDate)
{
    System.setProperty("http.keepAlive", "false");
    SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);

    envelope.dotNet = true;

    String METHOD = "GetTMSChart";
    String NAMESPACE = "http://tempuri.org/";
    String SOAP_ACTION = "http://tempuri.org/GetTMSChart";
    String URL = "http://54.251.60.177/TMSOrdersService/TMSDetails.asmx";

    SoapObject request = new SoapObject(NAMESPACE, METHOD);

    request.addProperty("FromDate", FromDate);
    request.addProperty("ToDate", ToDate);

    envelope.setOutputSoapObject(request);

    HttpTransportSE androidHttpTransport = new HttpTransportSE(URL);

    try 
    {
        androidHttpTransport.call(SOAP_ACTION, envelope);
        SoapObject result = (SoapObject) envelope.bodyIn;
        SoapObject root = (SoapObject) ((SoapObject) (result).getProperty(0)).getProperty("NewDataSet");
        int tablesCount = root.getPropertyCount();

for (int i = 0; i < tablesCount; i++) 
{
    SoapObject table = (SoapObject) root.getProperty(i);
    int propertyCount = table.getPropertyCount();

    for (int j = 0; j < propertyCount; j++) 
    {
    // String ord = table.getPropertyAsString("");

orderNo = Integer.parseInt(table.getPropertyAsString("Order_No"));
freightRate = Integer.parseInt(table.getPropertyAsString("Freight_Rate"));
//marginPercent = Integer.parseInt(table.getPropertyAsString("Margin_Percent"));

Log.i("Order Number Check : ", ""+orderNo);
                Log.i("Freight Rate Check : ", ""+freightRate);

            }
        }
    } catch (Exception e) 
      {
        }
}}

条形图活动.java

 public class BarGraphActivity extends Chart 
 {

int[] x_axis;
int[] y_axis;

public void onCreate(Bundle savedInstanceState) 
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main1);

    x_axis = new int[1];
    y_axis = new int[1];

    x_axis[0] = getIntent().getIntExtra("orderNo", 0);
    y_axis[0] = getIntent().getIntExtra("freightRate", 0);

    DrawGraph();
}

public void DrawGraph() 
{

    String[] titles = new String[] { " Barcharts", "" };

    List<int[]> values = new ArrayList<int[]>();
    values.add(x_axis);
    values.add(y_axis);

    int[] colors = new int[] { Color.WHITE, Color.BLACK };

    XYMultipleSeriesRenderer renderer = buildBarRenderer(colors);
    renderer.setOrientation(Orientation.HORIZONTAL);

setChartSettings(renderer, "some texts", " ", " ", 0, x_axis, 0, y_axis, Color.GRAY, Color.LTGRAY);
    renderer.setXLabels(1);

    renderer.addXTextLabel(2, "orderNo");
    renderer.addYTextLabel(2, "freight");

    renderer.setPanEnabled(true, false);

    int length = renderer.getSeriesRendererCount();
    for (int i = 0; i < length; i++) 
    {
SimpleSeriesRenderer seriesRenderer = renderer.getSeriesRendererAt(i);
seriesRenderer.setDisplayChartValues(true);
    }

ChartFactory.getBarChartIntent(this, buildBarDataset(titles, values), renderer, Type.DEFAULT);
}

public XYMultipleSeriesRenderer buildBarRenderer(int[] colors) 
{
 // creates a SeriesRenderer and initializes it with useful default values as well as colors

    XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();

    renderer.setAxisTitleTextSize(15);
    renderer.setChartTitleTextSize(20);
    renderer.setLabelsTextSize(15);
    renderer.setLegendTextSize(15);

    int length = colors.length;
    for (int i = 0; i < length; i++) 
    {
        SimpleSeriesRenderer r = new SimpleSeriesRenderer();
        r.setColor(colors[i]);
        renderer.addSeriesRenderer(r);
    }

    return renderer;
}

public void setChartSettings(XYMultipleSeriesRenderer renderer, String title, String xTitle, String yTitle,
int xMin, int[] x_axis, int yMin, int[] y_axis, int axesColor, int labelsColor) 
{
    // sets lots of default values for this renderer

    renderer.setChartTitle(title);

    renderer.setXTitle(xTitle);
    renderer.setYTitle(yTitle);

    renderer.setXAxisMin(xMin);

    renderer.setYAxisMin(yMin);
    renderer.setAxesColor(axesColor);
    renderer.setLabelsColor(labelsColor);

    renderer.setApplyBackgroundColor(true);
    renderer.setBackgroundColor(Color.GRAY);
}

public XYMultipleSeriesDataset buildBarDataset(String[] titles, List<int[]> values) 
{
    // adds the axis titles and values into the dataset

    XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
    int length = titles.length;

    for (int i = 0; i < length; i++) 
    {
        CategorySeries series = new CategorySeries(titles[i]);
        int[] v = values.get(i);
        int seriesLength = v.length;

        for (int k = 0; k < seriesLength; k++) 
        {
            series.add(v[k]);
        }
        dataset.addSeries(series.toXYSeries());
    }
    return dataset;
}
}
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