title: android force close: ClassNotFoundException for Activity class
body: <p>When I start my (soon-to-be) android game (from eclipse) it opens, but immediately force-closes.</p>
  
  <p>Logcat says:</p>
  
  <pre><code>07-09 17:12:35.709: ERROR/AndroidRuntime(3866): Uncaught handler: thread main exiting due to uncaught exception
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{org.anselm.eickhoff.rhythm/org.anselm.eickhoff.rhythm.RhythmGameActivity}: java.lang.ClassNotFoundException: org.anselm.eickhoff.rhythm.RhythmGameActivity in loader dalvik.system.PathClassLoader@4001e740
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2497)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2621)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at android.app.ActivityThread.access$2200(ActivityThread.java:126)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1932)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at android.os.Handler.dispatchMessage(Handler.java:99)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at android.os.Looper.loop(Looper.java:123)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at android.app.ActivityThread.main(ActivityThread.java:4595)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at java.lang.reflect.Method.invokeNative(Native Method)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at java.lang.reflect.Method.invoke(Method.java:521)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at dalvik.system.NativeStart.main(Native Method)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866): Caused by: java.lang.ClassNotFoundException: org.anselm.eickhoff.rhythm.RhythmGameActivity in loader dalvik.system.PathClassLoader@4001e740
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at android.app.Instrumentation.newActivity(Instrumentation.java:1021)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2489)
  07-09 17:12:35.719: ERROR/AndroidRuntime(3866):     ... 11 more
  </code></pre>
  
  <p>the interesting line here is (I think):</p>
  
  <pre><code>07-09 17:12:35.719: ERROR/AndroidRuntime(3866): Caused by: java.lang.ClassNotFoundException: org.anselm.eickhoff.rhythm.RhythmGameActivity in loader dalvik.system.PathClassLoader@4001e740
  </code></pre>
  
  <p>Which surprises me, because I have this class (in the right package)</p>
  
  <p><em>edit:</em> to clarify, added the first line which I had omitted (together with the imports)</p>
  
  <pre><code>package org.anselm.eickhoff.rhythm;
  ...
  public class RhythmGameActivity extends Activity {
  
  
      /** Called when the activity is first created. */
      @Override
      public void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.main);
  
      }
  
      @Override
      public void onPause() {
      }
  }
  </code></pre>
  
  <p>and that's all it does!</p>
  
  <p>I also registered it in the manifest:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
        package="org.anselm.eickhoff.rhythm"
        android:versionCode="1" android:versionName="pre-alpha"&gt;
  
      &lt;uses-permission android:name="android.permission.INTERNET" /&gt;
      &lt;application android:icon="@drawable/icon" android:label="@string/app_name" android:debuggable="true" android:hasCode="false"&gt;
  
      &lt;activity android:name=".RhythmGameActivity"&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;/application&gt;
  
  &lt;/manifest&gt; 
  </code></pre>
  
  <p><em>edit:</em> this all has started since I renamed the activity from RhythmGame to RhythmGameActivity, but I am pretty sure I replaced all the references so maybe it is still wrongly chached somewhere? (I tried refreshing and cleaning the project)</p>
  
  <p>Your help is really appreciated - im stuck!</p>