initialiseJUCE in Android library used in Maui

Android
1

Hi!
I am trying to build an Android .so library with Juce functionality and to use that library in a .net Maui application on Android. I managed to compile my Android library to an .so file, but I did not manage to initalize Juce in my library by calling
void Thread::initialiseJUCE (void* jniEnv, void* context)
because I do not know what pointers I should pass as parameters to the function above.
I found this post on StackOverflow which is about the same issue, but with Maui’s predecessor Xamarin. Based on the answer in the post I set my pointers as follows:

IntPtr jnienv = Android.Runtime.JNIEnv.Handle;
var currentContext = Microsoft.Maui.ApplicationModel.Platform.AppContext as global::Android.Runtime.IJavaObject;
IntPtr context = currentContext.Handle;

But this causes my Android application to crash with the following error:

[me.testapp] java_vm_ext.cc:594] JNI DETECTED ERROR IN APPLICATION: IsInstanceOf received NULL jclass
[me.testapp] java_vm_ext.cc:594]     in call to IsInstanceOf
[me.testapp] java_vm_ext.cc:594]     from android.view.View crc640ec207abc449b2ca.ShellSectionRenderer.n_onCreateView(android.view.LayoutInflater, android.view.ViewGroup, android.os.Bundle)

I suppose my pointers are not pointing to the right objects. I doubt especially that the second pointer is set right. Does anyone know what the pointers should point to?

2

same situation here, self android app with shared so of juce

3

Instead of call Thread:: initialiseJUCE, we need to call Java.initialiseJUCE() which initialize all the internal JNI classes. But need to remove System.loadLibrary(“juce_jni”); in the shared lib case

4

Hi! Thank you! Did you get it to work this way?
I have already given up on .Net Maui and decided to only use Juce for my implementations on mobile platforms. So far it works very well - much better than Maui…