unicode error during startup (python3, numpy, opencv) - patch included

[zworkb]

when building an app with python3, numpy and opencv I get a runtime error (Android 7.0, latest p4a):

python  :    File "/home/phil/dev/kivy/cvtest/.buildozer/android/platform/build/build/python-installs/cvtest400/android/__init__.py", line 8, in <module>
python  :    File "android/_android.pyx", line 178, in init android._android
python  :  TypeError: must be str, not bytes

this is due to a concatenation of two strings of which one is not guaranteed to be unicode. This can be repaired by applying the following patch:

diff --git a/pythonforandroid/recipes/android/src/android/_android.pyx b/pythonforandroid/recipes/android/src/android/_android.pyx
index d332eed..4d77ebc 100644
--- a/pythonforandroid/recipes/android/src/android/_android.pyx
+++ b/pythonforandroid/recipes/android/src/android/_android.pyx
@@ -174,8 +174,8 @@ from jnius import autoclass, PythonJavaClass, java_method, cast
 api_version = autoclass('android.os.Build$VERSION').SDK_INT
 version_codes = autoclass('android.os.Build$VERSION_CODES')
 
-
-python_act = autoclass(JAVA_NAMESPACE + u'.PythonActivity')
+java_namespace = JAVA_NAMESPACE.decode() if isinstance(JAVA_NAMESPACE, bytes) else JAVA_NAMESPACE
+python_act = autoclass(java_namespace  + u'.PythonActivity')
 Rect = autoclass(u'android.graphics.Rect')
 mActivity = python_act.mActivity
 if mActivity:

[tshirtman]

getting the same issue here, will try the patch asap.

[AndreMiras]

Fixed on master, thanks for the help guys 👍

[MathematicMarble]

applying the patch where?
Help please , im so lost..

[el3]

It's fixed in master it says in the post 2 months ago.

[MathematicMarble]

I get the same error even though its fixed?

[leematthewshome]

I am seeing the same error myself.

06-24 20:21:15.753 1064 1083 I python : File "/home/lee/KivyProjects/helloWorld/.buildozer/android/platform/build/build/python-installs/helloWorld/android/init.py", line 8, in
06-24 20:21:15.753 1064 1083 I python : File "android/_android.pyx", line 162, in init android._android
06-24 20:21:15.754 1064 1083 I python : TypeError: must be str, not bytes
06-24 20:21:15.754 1064 1083 I python : Python for android ended.