Error: Couldn't load opencv_java from loader...

Build Android system app that requires opencv library could result in this opencv library loading error. One way to get around this is to build the shared library with the app. Here is the snippet of Android.mk that define the opencv_java module

...
include $(CLEAR_VARS)
LOCAL_MODULE    := libopencv_java
LOCAL_SRC_FILES := libs/armeabi/libopencv_java.so
include $(BUILD_PREBUILT)
...

To build the prebuilt library into system, include $(BUILD_PREBUILT) instead of $(PREBUILT_SHARED_LIBRARY). I tried the latter, the system still could locate the opencv library files.

Eclipse hangs on startup with the error essage " The org.eclipse.m2e.logback.configuration bundle was activated before the state location was initialized."

My eclipse version is Version: Luna Service Release 1 (4.4.1) The way I addressed that problem is: Delete the *.snap files under your eclipse workspace ".metadata/.plugins/org.eclipse.core.resources/" Be aware that after I restart eclipse, the projects under that workspace that I'm working on are gone. I need to re-import the projects later.