JNI RegisterNatives called with pending exception java.lang.ClassNotFoundException: Didn't find class "org.audiostream.AudioIn"

[iacoposk8]

Hi, I've created a Google colab so you can simply recreate the error.

My code is:

from audiostream import get_input
from android.permissions import request_permissions, Permission
request_permissions([Permission.RECORD_AUDIO])
def mic_callback(buf):
    print("got", len(buf))
print("KEYWORD_TO_SEARCH_IN_ADB_LOGCAT")
mic = get_input(callback=mic_callback)

but in adb logcat I read:

02-25 10:53:48.359 1299 1568 F org.test.myapp: java_vm_ext.cc:570] JNI DETECTED ERROR IN APPLICATION: JNI RegisterNatives called with pending exception java.lang.ClassNotFoundException: Didn't find class "org.audiostream.AudioIn" on path: DexPathList[[zip file "/data/app/org.test.myapp-VZcDiTQAVptYQlU1RG8YjQ==/base.apk"],nativeLibraryDirectories=[/data/app/org.test.myapp-VZcDiTQAVptYQlU1RG8YjQ==/lib/arm, /data/app/org.test.myapp-VZcDiTQAVptYQlU1RG8YjQ==/base.apk!/lib/armeabi-v7a, /system/lib, /system/product/lib]]

and then, the application crashed.

Thanks for your help. I believe that if we create a working google colab it can also be integrated into the homepage to be used as a starting point.

[adarsh1783]

getting the same error 😔
can someone please help us ?

[aod1310]

hi, did you use buildozer for android application?

I solved this issue by copying java source directory of the audiostream package to dists/myapp/src/main/java/org
(it can be found in audiostream/audiostream/platform/android/org)

I don't know why buildozer didn't copy it to the dists directory.

[adarsh1783]

thanks bro, it worked.
Now If I am thinking about it looks that I should have thought of this.

[Julian-O]

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