Unable to resolve superclass of Activity

Question

I am getting this error on a new project based on OpenGL ES 10:

  09-03 12:44:07.870: W/dalvikvm(599): Unable to resolve superclass of Lcom/example/basicgl10test/MainActivity; (416)
  09-03 12:44:07.870: W/dalvikvm(599): Link of class 'Lcom/example/basicgl10test/MainActivity;' failed
  09-03 12:44:07.870: D/AndroidRuntime(599): Shutting down VM
  09-03 12:44:07.910: W/dalvikvm(599): threadid=1: thread exiting with uncaught exception (group=0x409c01f8)
  09-03 12:44:07.920: I/dalvikvm(599): Wrote stack traces to '/data/anr/traces.txt'
  09-03 12:44:07.980: E/AndroidRuntime(599): FATAL EXCEPTION: main
  09-03 12:44:07.980: E/AndroidRuntime(599): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.basicgl10test/com.example.basicgl10test.MainActivity}: java.lang.ClassNotFoundException: com.example.basicgl10test.MainActivity
  09-03 12:44:07.980: E/AndroidRuntime(599):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1880)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at android.app.ActivityThread.access$600(ActivityThread.java:123)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at android.os.Handler.dispatchMessage(Handler.java:99)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at android.os.Looper.loop(Looper.java:137)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at android.app.ActivityThread.main(ActivityThread.java:4424)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at java.lang.reflect.Method.invokeNative(Native Method)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at java.lang.reflect.Method.invoke(Method.java:511)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at dalvik.system.NativeStart.main(Native Method)
  09-03 12:44:07.980: E/AndroidRuntime(599): Caused by: java.lang.ClassNotFoundException: com.example.basicgl10test.MainActivity
  09-03 12:44:07.980: E/AndroidRuntime(599):    at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at android.app.Instrumentation.newActivity(Instrumentation.java:1023)
  09-03 12:44:07.980: E/AndroidRuntime(599):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1871)
  09-03 12:44:07.980: E/AndroidRuntime(599):    ... 11 more
  09-03 12:44:08.061: W/ActivityManager(92):   Force finishing activity com.example.basicgl10test/.MainActivity

My Activity Class is like this:

  package com.example.basicgl10test;
  import com.example.gl10gameadvlib.GL10GameActivity;
  import com.example.gl10gameadvlib.Screen;
  public class MainActivity extends GL10GameActivity {

The parent activity is like this in another package:

  package com.example.gl10gameadvlib;
  import javax.microedition.khronos.egl.EGLConfig;
  import javax.microedition.khronos.opengles.GL10;
  public abstract class GL10GameActivity extends Activity {

There are no errors during build. I have recreated a fresh project, clean+build also, still the issue persists.

I am using Eclipse IDE with Android 4.0 Emulator. Issue stays with any emulator or real device.

Thanks Souvik

Where did you put the jar containing `GL10GameActivity` class? — sdabet, Sep 03 '12 at 07:30
Have you configured your activity in the android manifest file? — Praful Bhatnagar, Sep 03 '12 at 07:33

score 63 · Answer 1 · answered May 17 '13 at 10:47

63

I faced this issue Right after GOOGLE IO 2013 when i updated my ADT plugin, Android SDK tools to Revision 22 and Android SDK platform-tools to revision 17

All of my projects that previously worked started throwing ClassNotFoundException after the update for no reason. Then i noticed that there is a new Android Package named as Android Private Libraries and after hours of trying i found a way to fix this.

Right Click on your Project then

Goto Build Path-> Configure Build Path -> Order and Export

when you are there you should check the Android Private Libraries and then click OK.

if you still face the problem delete all the files inside your bin folder and rebuilt you project.

Hope this solves your issue

answered May 17 '13 at 10:47

Sheraz Ahmad Khilji

8,300
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4

Thanks a billion times! Me to had this exact same issue after the SDK upgrade after I/O 2013. – May 17 '13 at 11:55
@Joram Teusink Glad to help – Sheraz Ahmad Khilji May 17 '13 at 12:02
1

Thanks so much, just wasted 3 hours trying to figure out wtf is going on before stumbling across your post. – Tony May 18 '13 at 02:06
thank you so much. i spent half a day researching why all my apps stopped working. – nomaam May 25 '13 at 22:54
Thanks! You just saved me as well! – Daniel Lerps May 27 '13 at 07:07
Been struggling with this for hours ... Thx Sheraz – Plumillon Forge Jun 07 '13 at 08:49
This worked for me also, but since I have 100+ Eclipse projects I found that the step **Build Path-> Configure Build Path -> Order and Export -> Android Private Libraries** is the same as replacing `` with `` in the .classpath so I was able to search and replace this across all projects, then delete bin & gen folders and it worked! – DaveAlden Jul 02 '13 at 14:41

sdabet · Answer 2 · 2013-05-20T19:26:47.507

3

To make sure your jar is actually exported at build, you should either:

put it in the libs folder
or fill the checkbox corresponding to your jar in project properties > Java build path > Order and export tab

edited May 20 '13 at 19:26

answered Sep 03 '12 at 07:37

sdabet

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score 0 · Answer 3 · answered Sep 03 '12 at 07:37

If you are using some external libraries, except linking it inside Eclipse, don't forget to put them in "libs" folder in the application. It should be near /src, /res and etc. Just /libs/yourLibrary.jar.

It will tell the compiler(not exactly) to include this library to your APK.

score 0 · Answer 4 · answered Sep 04 '12 at 19:12

Actually, the library I am importing is also an Android project and I have defined it as a library. In other projects, it is working the same way.

My manifest is as under:

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.basicgl10test"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            android:label="@string/title_activity_main" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

    <!-- Only Single Touch and OpenGLES less than 2.0 versions used by default -->
    <!-- We will use both multi and single touch handlers by using a class based SDK Version qualifier -->
    <uses-permission android:name="android.permission.WAKE_LOCK"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

</manifest>

score 0 · Answer 5 · answered Apr 19 '13 at 08:03

0

I have the same issue. What I've done is:

Configure Build Path.
Choose Order and Export Tab,
Select all the listed path or JAR file.
And Try it!

Good Luck.

answered Apr 19 '13 at 08:03

Fedy Venom

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Unable to resolve superclass of Activity

5 Answers5

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