Exception on Implement OnCompletionListener

[gonzafirewall]

Hi people i have this error sometimes when i implement the OnCompletionListener

I/python (16270): 2015-11-24 08:22:46-0600 [-] Traceback (most recent call last): I/python (16270): 2015-11-24 08:22:46-0600 [-] File "jnius_proxy.pxi", line 151, in jnius.jnius.invoke0 (jnius/jnius.c:25574) I/python (16270): 2015-11-24 08:22:46-0600 [-] File "jnius_proxy.pxi", line 121, in jnius.jnius.py_invoke0 (jnius/jnius.c:25206) I/python (16270): 2015-11-24 08:22:46-0600 [-] AttributeError: 'list' object has no attribute 'invoke' F/libc (16270): Fatal signal 11 (SIGSEGV), thread 16270 (r.vixcam:python)

This error not occur all the time, some times works well and sometimes make this exception, this is my onCompletionListener

class PythonOnComplete(PythonJavaClass):                                     
     __javainterfaces__ = ['android/media/MediaPlayer$OnCompletionListener']  
     def __init__(self, websocket, *args, **kwargs):                          
         self.ws = websocket                                                  
         super(PythonOnComplete, self).__init__(*args, **kwargs)              

     @java_method('(Landroid/media/MediaPlayer;)V')                           
     def onCompletion(self, mp):                                              
         del self.ws.last_song                                                
         print "[PYTHON_ON_COMPLETE]" +" termino el tema"   

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[dushujun]

Any advice?

[vesellov]

I have the same ...

[AndyRusso]

Any advice, guys?

[RobertFlatt]

Wrap your head around this. An overview of this approach is described here: https://github.com/Android-for-Python/Android-for-Python-Users#calling-python-from-java

Links to an example follow (it has 3 listeners, one of which is onCompletion):

Write the completion listener in Java, for example: https://github.com/Android-for-Python/Face-Detect-Example/blob/main/mlkit_src/org/kivy/mlkit/CompleteListener.java . Using the Callback wrapper described above ( for this example I used https://github.com/Android-for-Python/Face-Detect-Example/blob/main/mlkit_src/org/kivy/mlkit/CallbackWrapper.java ).

Those classes are then used in Python like this: https://github.com/Android-for-Python/Face-Detect-Example/blob/main/facedetect.py#L29-L30

https://github.com/Android-for-Python/Face-Detect-Example/blob/main/facedetect.py#L33-L49

https://github.com/Android-for-Python/Face-Detect-Example/blob/main/facedetect.py#L63-L66

https://github.com/Android-for-Python/Face-Detect-Example/blob/main/facedetect.py#L93

A Python method is thus called from a Java onCompletionListener.

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