Android java.lang.NoClassDefFoundError

Unity Engine
,
1

Hi all,
I have tried various approaches toward this problem, but I somehow can’t find a solution toward it.

11-15 00:22:19.434: E/AndroidRuntime(8746): FATAL EXCEPTION: main
11-15 00:22:19.434: E/AndroidRuntime(8746): java.lang.NoClassDefFoundError: com.blah.blah.R$layout
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at com.blah.vlah.TestConnect.onCreate(TestConnect.java:44)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1069)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2751)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2803)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at android.app.ActivityThread.access$2300(ActivityThread.java:135)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2136)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at android.os.Handler.dispatchMessage(Handler.java:99)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at android.os.Looper.loop(Looper.java:144)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at android.app.ActivityThread.main(ActivityThread.java:4937)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at java.lang.reflect.Method.invokeNative(Native Method)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at java.lang.reflect.Method.invoke(Method.java:521)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
11-15 00:22:19.434: E/AndroidRuntime(8746): 	at dalvik.system.NativeStart.main(Native Method)

On my Java Side:

public void StartConnection(String h)
    {
    	Intent intent = new Intent(MainActivity.this, TestConnect.class);
    	MainActivity.this.startActivity(intent);
    }

The On my TestConnect.class

 public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
...
}

on my Unity:

AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");
				AndroidJavaObject jo = jc.GetStatic<AndroidJavaObject>("currentActivity");
				jo.Call("StartConnection", "");

I am sure that the package is named the same. I have dropped in everything in the Plugins/Android folder. MAy anyone help me find out the solution

2

I was able to get this working by selecting the project in eclipse, choosing “export”, then Java → JAR File.

Then select the Eclipse project, and choose all the files, and export a jar. Then copy this jar to Unity in Assets–>Plugins–>Android.

Then be sure to copy your res folder from Eclipse to Unity in Assets–>Plugins–>Android .

Then it should be able to find your resources and load them…