

'dlopen failed: library "libopencv_java3.so" not found'

问题描述

2019-02-28 20:11:25.855 17090-17090/com.zj.picc E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.zj.picc, PID: 17090
    java.lang.UnsatisfiedLinkError: dlopen failed: library "libopencv_java3.so" not found

方法一

参考：Unable to link native library in OpenCV Android sample

我用的opencv-android-sdk版本是3.4.2，搜索是否包含libopencv_java3.so

$ locate libopencv_java3.so
/home/zj/Android/OpenCV-android-sdk/sdk/native/libs/arm64-v8a/libopencv_java3.so
/home/zj/Android/OpenCV-android-sdk/sdk/native/libs/armeabi/libopencv_java3.so
/home/zj/Android/OpenCV-android-sdk/sdk/native/libs/armeabi-v7a/libopencv_java3.so
/home/zj/Android/OpenCV-android-sdk/sdk/native/libs/mips/libopencv_java3.so
/home/zj/Android/OpenCV-android-sdk/sdk/native/libs/mips64/libopencv_java3.so
/home/zj/Android/OpenCV-android-sdk/sdk/native/libs/x86/libopencv_java3.so
/home/zj/Android/OpenCV-android-sdk/sdk/native/libs/x86_64/libopencv_java3.so

将对应版本(arm64-v8a、armeabi-v7a)的libopencv_java3.so文件复制到libs文件夹下，同时修改加载静态库代码

static {
    System.loadLibrary("opencv_java3");
    System.loadLibrary("NumberOCR");
}

方法二

参考:could not load library libopencv_java.so

修改Android.mk,添加

OPENCV_INSTALL_MODULES:=on