title: have you declared this activity in your androidmanifest.xml android
body: <p>I'm trying to use the aChart engine library for an android app. this is the activity i'm trying to run with an onClick event.</p>
  
  <pre><code>package com.example.euroxxi_testeficheiro;
  
  
  import org.achartengine.ChartFactory;
  import org.achartengine.chart.BarChart.Type;
  import org.achartengine.model.CategorySeries;
  import org.achartengine.model.XYMultipleSeriesDataset;
  import org.achartengine.renderer.XYMultipleSeriesRenderer;
  import org.achartengine.renderer.XYSeriesRenderer;
  
  import android.app.Activity;
  import android.content.Context;
  import android.content.Intent;
  import android.graphics.Color;
  
  public class ChartTeste extends Activity{
  
      public Intent getIntent(Context context) 
      {   
          // Bar 1
          int[] y = { 124, 135, 443, 456, 234, 123, 342, 134, 123, 643, 234, 274 };
          CategorySeries series = new CategorySeries("Demo Bar Graph 1");
          for (int i = 0; i &lt; y.length; i++) {
              series.add("Bar " + (i+1), y[i]);
          }
  
          // Bar 2
          int[] y2 = { 224, 235, 243, 256, 234, 223, 242, 234, 223, 243, 234, 274 };
          CategorySeries series2 = new CategorySeries("Demo Bar Graph 2");
          for (int i = 0; i &lt; y.length; i++) {
              series2.add("Bar " + (i+1), y2[i]);
          }
  
          XYMultipleSeriesDataset dataset = new XYMultipleSeriesDataset();
          dataset.addSeries(series.toXYSeries());
          dataset.addSeries(series2.toXYSeries());
  
          // This is how the "Graph" itself will look like
          XYMultipleSeriesRenderer mRenderer = new XYMultipleSeriesRenderer();
          mRenderer.setChartTitle("Demo Graph Title");
          mRenderer.setXTitle("X VALUES");
          mRenderer.setYTitle("Y VALUES");
          mRenderer.setAxesColor(Color.GREEN);
          mRenderer.setLabelsColor(Color.RED);
          // Customize bar 1
          XYSeriesRenderer renderer = new XYSeriesRenderer();
          renderer.setDisplayChartValues(true);
          renderer.setChartValuesSpacing((float) 0.5);
          mRenderer.addSeriesRenderer(renderer);
          // Customize bar 2
          XYSeriesRenderer renderer2 = new XYSeriesRenderer();
          renderer.setColor(Color.CYAN);
          renderer.setDisplayChartValues(true);
          renderer.setChartValuesSpacing((float) 0.5);
          mRenderer.addSeriesRenderer(renderer2);
  
          Intent intent = ChartFactory.getBarChartIntent(context, dataset,mRenderer, Type.DEFAULT);
          return intent;
      }
  
  }
  </code></pre>
  
  <p>XML layout</p>
  
  <pre><code> &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:tools="http://schemas.android.com/tools"
      android:id="@+id/chart"
      android:orientation="vertical"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:paddingBottom="@dimen/activity_vertical_margin"
      android:paddingLeft="@dimen/activity_horizontal_margin"
      android:paddingRight="@dimen/activity_horizontal_margin"
      android:paddingTop="@dimen/activity_vertical_margin"
      tools:context=".ChartTeste" &gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>AndroidManifest.xml</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example.euroxxi_testeficheiro"
      android:versionCode="1"
      android:versionName="1.0" &gt;
  
      &lt;uses-sdk
          android:minSdkVersion="8"
          android:targetSdkVersion="18" /&gt;
  
      &lt;application
          android:allowBackup="true"
          android:icon="@drawable/ic_launcher"
          android:label="@string/app_name"
          android:theme="@style/AppTheme" &gt;
          &lt;activity
              android:name="com.example.euroxxi_testeficheiro.MainActivity"
              android:label="@string/app_name" &gt;
              &lt;intent-filter&gt;
                  &lt;action android:name="android.intent.action.MAIN" /&gt;
  
                  &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
              &lt;/intent-filter&gt;
          &lt;/activity&gt;
          &lt;activity
              android:name="com.example.euroxxi_testeficheiro.ConsultaClientesActivity"
              android:label="@string/title_activity_consulta_clientes" &gt;
          &lt;/activity&gt;
          &lt;activity
              android:name="com.example.euroxxi_testeficheiro.ConsultaCondutoresActivity"
              android:label="@string/title_activity_consulta_clientes" &gt;
          &lt;/activity&gt;
          &lt;activity
              android:name="com.example.euroxxi_testeficheiro.ConsultaFornecedoresActivity"
              android:label="@string/title_activity_consultar_fornecedores" &gt;
          &lt;/activity&gt;
          &lt;activity
              android:name="com.example.euroxxi_testeficheiro.TesteGrafico"
              android:label="@string/title_activity_teste_grafico" &gt;
          &lt;/activity&gt;
          &lt;activity
              android:name="com.example.euroxxi_testeficheiro.ChartTeste"
              android:label="@string/title_activity_chart_teste" &gt;
          &lt;/activity&gt;
      &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p>I have declared this activity in the AndroidManifest but i keep getting the same error log.</p>
  
  <pre><code>05-14 12:27:01.973: E/AndroidRuntime(5256): FATAL EXCEPTION: main
  05-14 12:27:01.973: E/AndroidRuntime(5256): Process: com.example.euroxxi_testeficheiro, PID: 5256
  05-14 12:27:01.973: E/AndroidRuntime(5256): java.lang.IllegalStateException: Could not execute method of the activity
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.view.View$1.onClick(View.java:3969)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.view.View.performClick(View.java:4633)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.view.View$PerformClick.run(View.java:19330)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.os.Handler.handleCallback(Handler.java:733)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.os.Handler.dispatchMessage(Handler.java:95)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.os.Looper.loop(Looper.java:157)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.app.ActivityThread.main(ActivityThread.java:5356)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at java.lang.reflect.Method.invokeNative(Native Method)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at java.lang.reflect.Method.invoke(Method.java:515)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at dalvik.system.NativeStart.main(Native Method)
  05-14 12:27:01.973: E/AndroidRuntime(5256): Caused by: java.lang.reflect.InvocationTargetException
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at java.lang.reflect.Method.invokeNative(Native Method)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at java.lang.reflect.Method.invoke(Method.java:515)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.view.View$1.onClick(View.java:3964)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     ... 11 more
  05-14 12:27:01.973: E/AndroidRuntime(5256): Caused by: android.content.ActivityNotFoundException: Unable to find explicit activity class {com.example.euroxxi_testeficheiro/org.achartengine.GraphicalActivity}; have you declared this activity in your AndroidManifest.xml?
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.app.Instrumentation.checkStartActivityResult(Instrumentation.java:1648)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.app.Instrumentation.execStartActivity(Instrumentation.java:1442)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.app.Activity.startActivityForResult(Activity.java:3511)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.app.Activity.startActivityForResult(Activity.java:3472)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.app.Activity.startActivity(Activity.java:3714)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at android.app.Activity.startActivity(Activity.java:3682)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     at com.example.euroxxi_testeficheiro.MainActivity.ChartPlot(MainActivity.java:79)
  05-14 12:27:01.973: E/AndroidRuntime(5256):     ... 14 more
  </code></pre>
  
  <p>Any help would be appreciated :) if you need more details let me know.</p>