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POPassing values from the web service to the bar-chart in android
 

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  1. POPassing values from the web service to the bar-chart in android
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    <p>I am trying to pass two values ie.,a &amp; b values,to the x-axis and y-axis for creating a bar chart in android.But i am getting the a and b values from the web service by consuming it.Here i use SOAP method for consuming the web service.</p> <p>After trying of some code.i got these things on my log-cat.Can anyone let me know how to solve these issues? suggestions please..</p> <p><strong>LOGCAT</strong></p> <pre><code>10-03 11:35:25.285: W/KeyCharacterMap(404): No keyboard for id 0 10-03 11:35:25.295: W/KeyCharacterMap(404): Using default keymap: /system/usr/keychars/qwerty.kcm.bin 10-03 11:35:38.195: D/AndroidRuntime(404): Shutting down VM 10-03 11:35:38.195: W/dalvikvm(404): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 10-03 11:35:38.205: E/AndroidRuntime(404): FATAL EXCEPTION: main 10-03 11:35:38.205: E/AndroidRuntime(404): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.test_wb/com.example.test_wb.ResultActivity}: java.lang.NullPointerException 10-03 11:35:38.205: E/AndroidRuntime(404): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2585) 10-03 11:35:38.205: E/AndroidRuntime(404): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 10-03 11:35:38.205: E/AndroidRuntime(404): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 10-03 11:35:38.205: E/AndroidRuntime(404): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 10-03 11:35:38.205: E/AndroidRuntime(404): at android.os.Handler.dispatchMessage(Handler.java:99) 10-03 11:35:38.205: E/AndroidRuntime(404): at android.os.Looper.loop(Looper.java:123) 10-03 11:35:38.205: E/AndroidRuntime(404): at android.app.ActivityThread.main(ActivityThread.java:4627) 10-03 11:35:38.205: E/AndroidRuntime(404): at java.lang.reflect.Method.invokeNative(Native Method) 10-03 11:35:38.205: E/AndroidRuntime(404): at java.lang.reflect.Method.invoke(Method.java:521) 10-03 11:35:38.205: E/AndroidRuntime(404): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 10-03 11:35:38.205: E/AndroidRuntime(404): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 10-03 11:35:38.205: E/AndroidRuntime(404): at dalvik.system.NativeStart.main(Native Method) 10-03 11:35:38.205: E/AndroidRuntime(404): Caused by: java.lang.NullPointerException 10-03 11:35:38.205: E/AndroidRuntime(404): at org.apache.harmony.luni.util.FloatingPointParser.parseDouble(FloatingPointParser.java:263) 10-03 11:35:38.205: E/AndroidRuntime(404): at java.lang.Double.parseDouble(Double.java:287) 10-03 11:35:38.205: E/AndroidRuntime(404): at com.example.test_wb.ResultActivity.&lt;init&gt;(ResultActivity.java:25) 10-03 11:35:38.205: E/AndroidRuntime(404): at java.lang.Class.newInstanceImpl(Native Method) 10-03 11:35:38.205: E/AndroidRuntime(404): at java.lang.Class.newInstance(Class.java:1429) 10-03 11:35:38.205: E/AndroidRuntime(404): at android.app.Instrumentation.newActivity(Instrumentation.java:1021) 10-03 11:35:38.205: E/AndroidRuntime(404): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2577) 10-03 11:35:38.205: E/AndroidRuntime(404): ... 11 more </code></pre> <p><strong>Main_WB.java</strong></p> <pre><code>public class Main_WB extends Activity { EditText edt1, edt2; // TextView txt_1; Button btn; ArrayList&lt;String&gt; result; @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); result = new ArrayList&lt;String&gt;(); btn.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { result.addAll(getTMSChart(edt1.getText().toString(), edt2.getText().toString())); Intent in = new Intent(getApplicationContext(), ResultActivity.class); in.putExtra("gotonextpageX", result.get(0)); in.putExtra("gotonextpageY", result.get(1)); startActivity(in); } }); } private ArrayList&lt;String&gt; getTMSChart(String FromDate, String ToDate) { // txt_1 = (TextView)findViewById(R.id.textView1); System.setProperty("http.keepAlive", "false"); SoapSerializationEnvelope envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11); envelope.dotNet = true; String NAMESPACE = "http://tempuri.org/"; String URL = "http://54.251.60.177/TMSOrdersService/TMSDetails.asmx"; String METHOD = "GetTMSChart"; SoapObject request = new SoapObject(NAMESPACE, METHOD); request.addProperty("FromDate", FromDate); request.addProperty("ToDate", ToDate); envelope.setOutputSoapObject(request); HttpTransportSE androidHttpTransport = new HttpTransportSE(URL); String x = "", y = ""; ArrayList&lt;String&gt; stringResult = new ArrayList&lt;String&gt;(); try { androidHttpTransport.call(NAMESPACE + METHOD, envelope); SoapObject result = (SoapObject) envelope.bodyIn; SoapObject root = (SoapObject) ((SoapObject) (result).getProperty(0)).getProperty("NewDataSet"); int tablesCount = root.getPropertyCount(); for (int i = 0; i &lt; tablesCount; i++) { SoapObject table = (SoapObject) root.getProperty(i); int propertyCount = table.getPropertyCount(); for (int j = 0; j &lt; propertyCount; j++) { stringResult.add(table.getPropertyAsString("Order_No").toString()); stringResult.add(table.getPropertyAsString("Freight_Rate").toString()); } } } catch (Exception e) { } return stringResult; } } </code></pre> <p><strong>ResultActivity.java</strong></p> <pre><code>public class ResultActivity extends Activity { TextView txt1,txt2; String a,b; double x_axis = Double.parseDouble(a); // Type casting double y_axis = Double.parseDouble(b); // Type casting @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main1); Bundle extras = getIntent().getExtras(); if(extras != null) { a = extras.getString("gotonextpageX"); b = extras.getString("gotonextpageY"); } else { } draw(); //txt1 = (TextView)findViewById(R.id.txtVw); //txt2 = (TextView)findViewById(R.id.txtVw2); //txt1.setText(x); //txt2.setText(y); } public void draw() { String[] titles = new String[] { "Order's profit of the year", " " }; List&lt;double[]&gt; values = new ArrayList&lt;double[]&gt;(); values.add(new double[] { y_axis }); int[] colors = new int[] { Color.BLACK, Color.WHITE}; XYMultipleSeriesRenderer renderer = buildBarRenderer(colors); renderer.setOrientation(Orientation.HORIZONTAL); setChartSettings(renderer, "Profit for the year 2012", " ", " ",0,x_axis, 0,y_axis, Color.GRAY, Color.LTGRAY); renderer.setXLabels(1); renderer.addXTextLabel(100, "x"); //renderer.addXTextLabel(200, "ord2"); //renderer.addXTextLabel(300, "ord3"); //renderer.addXTextLabel(400, "ord4"); //renderer.setPanEnabled(true, false); int length = renderer.getSeriesRendererCount(); for (int i = 0; i &lt; length; i++) { SimpleSeriesRenderer seriesRenderer = renderer.getSeriesRendererAt(i); seriesRenderer.setDisplayChartValues(true); } ChartFactory.getBarChartIntent(this, buildBarDataset(titles, values), renderer,Type.DEFAULT); } protected 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 &lt; length; i++) { SimpleSeriesRenderer r = new SimpleSeriesRenderer(); r.setColor(colors[i]); renderer.addSeriesRenderer(r); } return renderer; } protected void setChartSettings(XYMultipleSeriesRenderer renderer, String title, String xTitle, String yTitle, double xMin, double x_axis2, double yMin, double yMax, 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.setXAxisMax(x2); renderer.setYAxisMin(yMin); renderer.setYAxisMax(yMax); renderer.setAxesColor(axesColor); renderer.setLabelsColor(labelsColor); renderer.setApplyBackgroundColor(true); renderer.setBackgroundColor(Color.GRAY); } protected XYMultipleSeriesDataset buildBarDataset(String[] titles, List&lt;double[]&gt; values) { // adds the axis titles and values into the data-set XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset(); int length = titles.length; for (int i = 0; i &lt; length; i++) { CategorySeries series = new CategorySeries(titles[i]); double[] v = values.get(i); int seriesLength = v.length; for (int k = 0; k &lt; seriesLength; k++) { series.add(v[k]); } dataset.addSeries(series.toXYSeries()); } return dataset; } } </code></pre> <p>Thanks for your precious time!..</p>
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