Android中的条形图问题 [英] Bar-chart's issues in android
本文介绍了Android中的条形图问题的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
有人在您的logcat上遇到以下问题吗?在这里，我试图借助achartengine库在android中创建条形图.但是问题是我正在通过消费从Web服务获取x和y轴值.
Has any one met the below issue on your logcat? Here i am trying to create a barchart in android with the help of achartengine library.But the problem is i am getting the x and y axis values from the web service by consuming it.
请提出建议.
感谢前进！..
10-26 10:37:19.936: W/KeyCharacterMap(715): No keyboard for id 0
10-26 10:37:19.936: W/KeyCharacterMap(715): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
10-26 10:37:30.555: D/AndroidRuntime(715): Shutting down VM
10-26 10:37:30.555: W/dalvikvm(715): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
10-26 10:37:30.565: E/AndroidRuntime(715): FATAL EXCEPTION: main
10-26 10:37:30.565: E/AndroidRuntime(715): java.lang.IndexOutOfBoundsException: Invalid index 0, size is 0
10-26 10:37:30.565: E/AndroidRuntime(715): at java.util.ArrayList.throwIndexOutOfBoundsException(ArrayList.java:257)
10-26 10:37:30.565: E/AndroidRuntime(715): at java.util.ArrayList.get(ArrayList.java:311)
10-26 10:37:30.565: E/AndroidRuntime(715): at com.example.barchart_test.Chart_MainActivity$1.onClick(Chart_MainActivity.java:46)
10-26 10:37:30.565: E/AndroidRuntime(715): at android.view.View.performClick(View.java:2408)
10-26 10:37:30.565: E/AndroidRuntime(715): at android.view.View$PerformClick.run(View.java:8816)
10-26 10:37:30.565: E/AndroidRuntime(715): at android.os.Handler.handleCallback(Handler.java:587)
10-26 10:37:30.565: E/AndroidRuntime(715): at android.os.Handler.dispatchMessage(Handler.java:92)
10-26 10:37:30.565: E/AndroidRuntime(715): at android.os.Looper.loop(Looper.java:123)
10-26 10:37:30.565: E/AndroidRuntime(715): at android.app.ActivityThread.main(ActivityThread.java:4627)
10-26 10:37:30.565: E/AndroidRuntime(715): at java.lang.reflect.Method.invokeNative(Native Method)
10-26 10:37:30.565: E/AndroidRuntime(715): at java.lang.reflect.Method.invoke(Method.java:521)
10-26 10:37:30.565: E/AndroidRuntime(715): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
10-26 10:37:30.565: E/AndroidRuntime(715): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
10-26 10:37:30.565: E/AndroidRuntime(715): at dalvik.system.NativeStart.main(Native Method)
10-26 10:37:32.885: I/Process(715): Sending signal. PID: 715 SIG: 9
Chart_MainActivity.java
public class Chart_MainActivity extends Activity
{
EditText edt1, edt2;
// TextView txt_1;
Button btn;
ArrayList<String> result;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
edt1 = (EditText) findViewById(R.id.edt1_date1);
edt2 = (EditText) findViewById(R.id.edt_date2);
btn = (Button) findViewById(R.id.button_invoke);
result = new ArrayList<String>();
btn.setOnClickListener(new View.OnClickListener()
{
public void onClick(View v)
{
result.addAll(getTMSChart(edt1.getText().toString(), edt2.getText().toString()));
// result.add(x);
// result.add(y);
Intent in = new Intent(getApplicationContext(), NextActivity.class);
in.putExtra("gotonextpageX", result.get(0));
in.putExtra("gotonextpageY", result.get(1));
startActivity(in);
}
});}
private ArrayList<String> 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<String> stringResult = new ArrayList<String>();
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 < tablesCount; i++)
{
SoapObject table = (SoapObject) root.getProperty(i);
int propertyCount = table.getPropertyCount();
for (int j = 0; j < propertyCount; j++)
{
stringResult.add(table.getPropertyAsString("Order_No").toString());
stringResult.add(table.getPropertyAsString("Freight_Rate").toString());
// stringResult.add(table.getPropertyAsString("Margin_Percent").toString());
// freightRate = Integer.parseInt(table.getPropertyAsString("Freight_Rate"));
}
}
}
catch (ArrayIndexOutOfBoundsException e)
{}
catch(Exception e)
{}
return stringResult;
} }
NextActivity.java
public class NextActivity extends Activity
{
double x,y;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main1);
Bundle extras = getIntent().getExtras();
if(extras != null)
{
x = extras.getDouble("gotonextpageX");
y = extras.getDouble("gotonextpageY");
}
else
{}
final GraphicalView gv =createIntent();
RelativeLayout rl=(RelativeLayout)findViewById(R.id.rlt);
rl.addView(gv);
}
public GraphicalView createIntent()
{
String[] titles = new String[] { "Orders profit"};
List<double[]> values = new ArrayList<double[]>();
values.add(new double[] {x,x,x});
values.add(new double[] {y,y,y});
int[] colors = new int[] { Color.parseColor("#77c4d3")};
XYMultipleSeriesRenderer renderer = buildBarRenderer(colors);
renderer.setOrientation(Orientation.HORIZONTAL);
setChartSettings(renderer,"","Order number","Freight Rate",0.5,12.5, 0, 1000, Color.GREEN, Color.GREEN);
renderer.setXLabels(1);
renderer.setYLabels(5);
renderer.setPanEnabled(true, false);
/*renderer.addXTextLabel(1, "Jan");
renderer.addXTextLabel(2, "Feb");
renderer.addXTextLabel(3, "Mar");
renderer.addXTextLabel(4, "Apr");
renderer.addXTextLabel(5, "May");
renderer.addXTextLabel(6, "Jun");
*/
int length = renderer.getSeriesRendererCount();
for (int i = 0; i < length; i++)
{
SimpleSeriesRenderer seriesRenderer = renderer.getSeriesRendererAt(i);
seriesRenderer.setDisplayChartValues(true);
}
final GraphicalView grfv = ChartFactory.getBarChartView(NextActivity.this, buildBarDataset(titles, values), renderer,Type.DEFAULT);
return grfv;
}
protected XYMultipleSeriesRenderer buildBarRenderer(int[] colors)
{
XYMultipleSeriesRenderer renderer = new XYMultipleSeriesRenderer();
renderer.setAxisTitleTextSize(16);
renderer.setChartTitleTextSize(20);
renderer.setLabelsTextSize(15);
renderer.setLegendTextSize(15);
renderer.setBarSpacing(1);
renderer.setMarginsColor(Color.parseColor("#0E120E"));
renderer.setXLabelsColor(Color.WHITE);
renderer.setYLabelsColor(0,Color.WHITE);
renderer.setApplyBackgroundColor(true);
renderer.setBackgroundColor(Color.parseColor("#000000"));
int length = colors.length;
for (int i = 0; i < length; i++)
{
SimpleSeriesRenderer r = new SimpleSeriesRenderer();
r.setColor(colors[i]);
r.setChartValuesSpacing(-90);
r.setChartValuesSpacing(15);
renderer.addSeriesRenderer(r);
}
return renderer;
}
protected XYMultipleSeriesDataset buildBarDataset(String[] titles, List<double[]> values)
{
XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
int length = titles.length;
for (int i = 0; i < length; i++)
{
CategorySeries series = new CategorySeries(titles[i]);
double[] 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;
}
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[] { 10, 65, 10, 15 });
renderer.setAxesColor(axesColor);
renderer.setLabelsColor(labelsColor);
} }
main.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<AbsoluteLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<EditText
android:id="@+id/edt1_date1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="46dp"
android:layout_y="116dp"
android:ems="10" >
<requestFocus />
</EditText>
<EditText
android:id="@+id/edt_date2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="46dp"
android:layout_y="180dp"
android:ems="10" />
<Button
android:id="@+id/button_invoke"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_x="204dp"
android:layout_y="246dp"
android:text="Invoke" />
</AbsoluteLayout>
</LinearLayout>
main1.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rlt"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
</RelativeLayout>
Manifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.barchart_test"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="8" android:targetSdkVersion="8" android:maxSdkVersion="15"/>
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity android:name=".Chart_MainActivity"
android:label="@string/title_activity_chart__main" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".NextActivity"></activity>
<activity android:name="org.achartengine.GraphicalActivity" />
</application>
</manifest>
推荐答案
即使问题并未描述所有方面，这里看起来也很简单.
It looks like a simple issue here even though the question is not describing all the aspects.
我们可以很容易地猜测到主活动类中的第46行是以下内容:
We can easily guess that line 46 in the main activity class is the one below:
in.putExtra("gotonextpageX", result.get(0));
结果 result 列表中没有元素，并且您尝试获取第一个元素，因此抛出了 IndexOutOfBounds 异常.
The result list has no elements in it and you are trying to get the first one, so the IndexOutOfBounds exception is thrown.
这篇关于Android中的条形图问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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