Error getting Accelerometer sample from http://pyjnius.readthedocs.org/en/latest/android.html to run

[Meng Choon Tan]

Hi,

I am new to pyjnius development in Kivy and is hoping if anyone who is familiar with the Accelerometer access  sample code at http://pyjnius.readthedocs.org/en/latest/android.html can assist me with this issue.

I've tried running the sample on an android device but it crashes as soon as the specific accelerometer code loads. 

I followed the instructions to create the "org/myapp/Hardware.java" file and have place the file under the /sdcard/kivy/showcase/.buildozer/android/platform/python-for-android/src folder of the project directory

Here's the error message on logcat.

I/python  (15129):      root.init_android_class('ClassName')

I/python  (15129):    File "/sdcard/kivy/showcase/.buildozer/android/app/main.py", line 279, in init_android_class

I/python  (15129):    File "/sdcard/kivy/showcase/.buildozer/android/platform/python-for-android/dist/myapp/private/lib/python2.7/site-packages/jnius/reflect.py", line 150, in autoclass

I/python  (15129):    File "jnius_export_func.pxi", line 23, in jnius.jnius.find_javaclass (jnius/jnius.c:11687)

I/python  (15129):  jnius.jnius.JavaException: Class not found 'org/myapp/Hardware'

D/InputReader(  839): Input event: value=0 when=8646143735000

I/InputReader(  839): Touch event's action is 0x1 (deviceType=0) [pCnt=1, s=] when=8646143736000

I/InputDispatcher(  839): Delivering touch to: action: 0x1

I/python  (15129): Python for android ended.

W/dalvikvm(15129): threadid=12: thread exiting with uncaught exception (group=0x41715da0)

E/AndroidRuntime(15129): FATAL EXCEPTION: Thread-1898

E/AndroidRuntime(15129): Process: org.test.myapp:python, PID: 15129

E/AndroidRuntime(15129): java.lang.NoClassDefFoundError: org/myapp/Hardware

E/AndroidRuntime(15129): at org.renpy.android.SDLSurfaceView.nativeInit(Native Method)

E/AndroidRuntime(15129): at org.renpy.android.SDLSurfaceView.run(SDLSurfaceView.java:726)

E/AndroidRuntime(15129): at java.lang.Thread.run(Thread.java:841)

E/AndroidRuntime(15129): Caused by: java.lang.ClassNotFoundException: Didn't find class "org.myapp.Hardware" on path: DexPathList[[zip file "/data/app/org.test.myapp-54.apk"],nativeLibraryDirectories=[/data/app-lib/org.test.myapp-54, /vendor/lib, /system/lib]]

E/AndroidRuntime(15129): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:67)

E/AndroidRuntime(15129): at java.lang.ClassLoader.loadClass(ClassLoader.java:497)

E/AndroidRuntime(15129): at java.lang.ClassLoader.loadClass(ClassLoader.java:457)

E/AndroidRuntime(15129): ... 3 more

W/ActivityManager(  839):   Force finishing activity org.test.myapp/org.renpy.android.PythonActivity

Hope that anyone can help to comment if I am doing the steps correctly in getting the sample to work on Android.

[Ben Rousch]

It's a lot easier to use Plyer. It has good accelerometer support.

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