我有一个Android项目,它有本机代码.在这个原生部分,我使用OpenCV.当我使用OpenCV 2.3.1时,一切都编译好了,但是当我试图切换到版本2.4.1时,我遇到了问题:
它编译没有任何错误,但是当我启动我的应用程序时,由于UnsatisfiedLinkError,它无法加载我的库.
Cannot load library: link_image[1936]: 37 could not load needed library 'libopencv_java.so' for 'mylibrary.so' (load_library[1091]: Library 'libopencv_java.so' not found)
我看到Open CV尝试加载libopencv_java.so,但我不需要它,我不在java代码中使用OpenCV.这个图书馆的大小> 5M.
如何编译而不将此lib添加到项目中？
我尝试在模拟器上运行opencv android示例.具有本机代码的示例例如样本"Tutorial 2 Advanced - 1. Add Native OpenCV"失败.我有一个Win7 x86系统.我可以构建本机库,但如果我运行示例,我总是得到以下异常:
10-04 08:08:19.179: WARN/dalvikvm(696): Exception Ljava/lang/UnsatisfiedLinkError; thrown while initializing Lorg/opencv/samples/tutorial3/Sample3View;
10-04 08:08:19.190: DEBUG/AndroidRuntime(696): Shutting down VM
10-04 08:08:19.190: WARN/dalvikvm(696): threadid=1: thread exiting with uncaught exception (group=0x40015560)
10-04 08:08:19.289: ERROR/AndroidRuntime(696): FATAL EXCEPTION: main
10-04 08:08:19.289: ERROR/AndroidRuntime(696): java.lang.ExceptionInInitializerError
10-04 08:08:19.289: ERROR/AndroidRuntime(696): at org.opencv.samples.tutorial3.Sample3Native.onCreate(Sample3Native.java:23)
10-04 08:08:19.289: ERROR/AndroidRuntime(696): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
10-04 08:08:19.289: ERROR/AndroidRuntime(696): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
10-04 08:08:19.289: ERROR/AndroidRuntime(696): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
10-04 08:08:19.289: ERROR/AndroidRuntime(696): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
10-04 08:08:19.289: ERROR/AndroidRuntime(696): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
10-04 08:08:19.289: ERROR/AndroidRuntime(696): at android.os.Handler.dispatchMessage(Handler.java:99) …我有一个使用一些C++和OpenCV的完全工作的应用程序.它编译并成功运行.现在我只是想整理我的代码并进行更改以在编译时删除所有警告.但有一个我不明白的警告.它似乎是我的android.mk的问题.
编译时,控制台输出如下:
06:58:21 **** Incremental Build of configuration Default for project Motion ****
"C:\\android-ndk-r9c\\ndk-build.cmd" all
Android NDK: WARNING:jni/Android.mk:mixed_sample: non-system libraries in linker flags: -lopencv_java
Android NDK: This is likely to result in incorrect builds. Try using LOCAL_STATIC_LIBRARIES
Android NDK: or LOCAL_SHARED_LIBRARIES instead to list the library dependencies of the
Android NDK: current module
[armeabi-v7a] Compile++ thumb: mixed_sample <= cpp_part.cpp
[armeabi-v7a] SharedLibrary : libmixed_sample.so
C:/android-ndk-r9c/toolchains/arm-linux-androideabi-4.6/prebuilt/windows-x86_64/bin/../lib/gcc/arm-linux-androideabi/4.6/../../../../arm-linux-androideabi/bin/ld.exe: warning: hidden symbol '__aeabi_atexit' in C:/android-ndk-r9c/sources/cxx-stl/gnu-libstdc++/4.6/libs/armeabi-v7a/libgnustl_static.a(atexit_arm.o) is referenced by DSO c:/opencv-2.4.8-android-sdk/sdk/native/jni/../libs/armeabi-v7a/libopencv_java.so
[armeabi-v7a] Install : libmixed_sample.so => …