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Unable to get started on Android through Unity

I am using Unity to create an Android application.

I have two plugins. Each works fine on its own, but when I want both of them to be used, I can't switch between them.

I spent the last ten days, read all the similar questions, and tried everything from decompiling / editing / recompiling Java code to make it from Unity itself, but no luck.

Here is the last code I wrote and the errors I get.

My AndroidManifest.xml file:

  ... <activity android:name="com.Company.Game.RRAndroidPluginActivity" android:label="My Game"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.BROWSABLE" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="com.codiwans.iab.IAB" android:screenOrientation="landscape" android:configChanges="fontScale|keyboard|keyboardHidden|locale|mnc|mcc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|uiMode|touchscreen" android:label="My Game IAB" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.BROWSABLE" /> </intent-filter> </activity> ...

Here is the Unity code (in C #):

 AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer"); AndroidJavaObject jo = jc.GetStatic<AndroidJavaObject>("currentActivity"); AndroidJavaObject pm = jo.Call<AndroidJavaObject>("getPackageManager"); AndroidJavaObject intent = pm.Call<AndroidJavaObject>("getLaunchIntentForPackage", "com.codiwans.iab.IAB"); jo.Call("startActivity", intent);

Here is the error I get:

 JNI: Unable to find method id for 'getClass' Filename: ./Runtime/ExportGenerated/AndroidManaged/UnityEngineDebug.cpp Line: 54) JNI: Unable to find method id for 'getName' Filename: ./Runtime/ExportGenerated/AndroidManaged/UnityEngineDebug.cpp Line: 54) JNI: Unable to find method id for 'getName' Filename: ./Runtime/ExportGenerated/AndroidManaged/UnityEngineDebug.cpp Line: 54) Caused by: java.lang.NoClassDefFoundError: com/unity3d/player/UnityPlayer$12 at com.unity3d.player.UnityPlayer.setScreenSize(Unknown Source) at com.unity3d.player.UnityPlayer.nativeRender(Native Method) at com.unity3d.player.UnityPlayer.onDrawFrame(Unknown Source) at android.opengl.GLSurfaceView$GLThread.guardedRun(GLSurfaceView.java:1462) at android.opengl.GLSurfaceView$GLThread.run(GLSurfaceView.java:1216) Caused by: java.lang.NullPointerException at android.app.Instrumentation.execStartActivity(Instrumentation.java:1382) at android.app.Activity.startActivityForResult(Activity.java:3190) at android.app.Activity.startActivity(Activity.java:3297) ... 4 more

Both actions are MAIN. One of them is LAUNCHER.

I can successfully call methods for both.

I cannot switch the activity to non-LAUNCHER, however, indicating the indicated error (could not find the identifier for getClass).

I feel so close, but for now. Any help is appreciated. Go crazy here!

Thanks.

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1 answer

Your real problem is this: java.lang.NoClassDefFoundError: com / unity3d / player / UnityPlayer $ 12

For some reason, Java does not find this class in your class. Some research elsewhere has shown that this may be due to a mismatch in the bank you are compiling and the version you are developing. It may also be that you do not have the jar in the right place, or the version you are using does not provide this class.

I hope this at least helps you in the right direction.

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Source: https://habr.com/ru/post/1492597/

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