java.lang.UnsatisfiedLinkError:dlopen失败:library&"libopencv_java3.so& quot;未找到 [英] java.lang.UnsatisfiedLinkError: dlopen failed: library "libopencv_java3.so" not found
问题描述
我正在开发一个Android应用程序,该应用程序应该检测人脸是否在相机前面,然后基于该人执行一些操作.我正在使用开放式cv进行面部检测,但是我需要一些服装C ++功能.因此,我试图将OpenCV内容导入到我自己的C ++文件 myLib.cpp
中.然后,我想在 mainActivity
中的 myLib
中定义的函数.
构建项目时,一切正常,但是只要在设备上运行它(Oneplus x-Android 22),它就会立即崩溃,并显示以下错误消息:
04-12 10:28:38.494 11114-11114/?E/AndroidRuntime:致命异常:main流程:com.lunaticcoding.opencvtest,PID:11114java.lang.UnsatisfiedLinkError:dlopen失败:库"libopencv_java3.so";未找到在java.lang.Runtime.loadLibrary(Runtime.java:371)在java.lang.System.loadLibrary(System.java:988)在com.lunaticcoding.opencvtest.MainActivity处.< clinit>(MainActivity.java:19)在java.lang.reflect.Constructor.newInstance(本机方法)在java.lang.Class.newInstance(Class.java:1606)在android.app.Instrumentation.newActivity(Instrumentation.java:1066)在android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2246)在android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2424)在android.app.ActivityThread.access $ 900(ActivityThread.java:155)在android.app.ActivityThread $ H.handleMessage(ActivityThread.java:1323)在android.os.Handler.dispatchMessage(Handler.java:102)在android.os.Looper.loop(Looper.java:139)在android.app.ActivityThread.main(ActivityThread.java:5298)在java.lang.reflect.Method.invoke(本机方法)在java.lang.reflect.Method.invoke(Method.java:372)在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:950)在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:745)
我的OpenCV build.gradle
:
应用插件:"com.android.library"安卓 {compileSdkVersion 27defaultConfig {minSdkVersion 15targetSdkVersion 27版本代码1versionName"1.0";testInstrumentationRunner"android.support.test.runner.AndroidJUnitRunner"externalNativeBuild {cmake {cppFlags"-frtti -fexceptions";abiFilters'x86','x86_64','armeabi','armeabi-v7a','arm64-v8a','mips','mips64'}}}buildTypes {释放 {minifyEnabled falseproguardFiles getDefaultProguardFile('proguard-android.txt'),'proguard-rules.pro'}}externalNativeBuild {cmake {路径"CMakeLists.txt"}}sourceSets {主要的 {jni.srcDirs = [jni.srcDirs,'src/sdk/native/jni/include']jniLibs.srcDirs = [jniLibs.srcDirs,'src/sdk/native/3rdparty/libs','src/sdk/native/libs']}}}依赖项{实现fileTree(dir:'libs',包括:['* .jar'])实施'com.android.support:appcompat-v7:27.1.1'testImplementation'junit:junit:4.12'androidTestImplementation'com.android.support.test:runner:1.0.1'androidTestImplementation'com.android.support.test.espresso:espresso-core:3.0.1'}
我的OpenCV CMakeLists.txt
:
cmake_minimum_required(版本3.4.1)设置(OpenCV_DIR"/用户/lunaticcoding/文档/OpenCV-android-sdk/sdk/本机/jni")find_package(需要OpenCV java)消息(状态"OpenCV库:$ {OpenCV_LIBS}")include_directories($ {OpenCV_INCLUDE_DIRS})
问题是在我的构建中未创建 libopencv_java3.so
.因此,问题必须出在OpenCV项目的 CMakeLists.txt
中.有谁知道如何将libopencv_java3.so文件导出到我的应用程序版本中?
您必须在设备上安装OpenCV Manager.
像这样启动经理
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_6,this,mLoaderCallback);
BaseLoaderCallback是
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this){@Overridepublic void onManagerConnected(int status){开关(状态){案例LoaderCallbackInterface.SUCCESS:{Log.i(TAG,"OpenCV成功加载");} 休息;默认:{super.onManagerConnected(状态);} 休息;}}};
请参见参考页 >
I am working on an android app that is supposed to detect if a face is in front of the camera and then perform some action based on it. I am using open cv for the face detection but I need some costume C++ functionality. So I am trying to import the OpenCV stuff into my own C++ file myLib.cpp
. I then want to call the function defined in myLib
in my mainActivity
.
When I build the project everything works fine but as soon as I run it on my device (Oneplus x - Android 22) it immediately crashes with the following error message:
04-12 10:28:38.494 11114-11114/? E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.lunaticcoding.opencvtest, PID: 11114
java.lang.UnsatisfiedLinkError: dlopen failed: library "libopencv_java3.so" not found
at java.lang.Runtime.loadLibrary(Runtime.java:371)
at java.lang.System.loadLibrary(System.java:988)
at com.lunaticcoding.opencvtest.MainActivity.<clinit>(MainActivity.java:19)
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.Class.newInstance(Class.java:1606)
at android.app.Instrumentation.newActivity(Instrumentation.java:1066)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2246)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2424)
at android.app.ActivityThread.access$900(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1323)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:139)
at android.app.ActivityThread.main(ActivityThread.java:5298)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:950)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:745)
my OpenCV build.gradle
:
apply plugin: 'com.android.library'
android {
compileSdkVersion 27
defaultConfig {
minSdkVersion 15
targetSdkVersion 27
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
externalNativeBuild {
cmake {
cppFlags "-frtti -fexceptions"
abiFilters 'x86', 'x86_64', 'armeabi', 'armeabi-v7a', 'arm64-v8a', 'mips', 'mips64'
}
}
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
externalNativeBuild {
cmake {
path "CMakeLists.txt"
}
}
sourceSets {
main {
jni.srcDirs = [jni.srcDirs, 'src/sdk/native/jni/include']
jniLibs.srcDirs = [jniLibs.srcDirs, 'src/sdk/native/3rdparty/libs', 'src/sdk/native/libs']
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:27.1.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}
my OpenCV CMakeLists.txt
:
cmake_minimum_required(VERSION 3.4.1)
set(OpenCV_DIR "/Users/lunaticcoding/Documents/OpenCV-android-sdk/sdk/native/jni")
find_package(OpenCV REQUIRED java)
message(STATUS "OpenCV libraries: ${OpenCV_LIBS}")
include_directories(${OpenCV_INCLUDE_DIRS})
The problem is that the libopencv_java3.so
does not get created in my build. So the problem must be in the CMakeLists.txt
of the OpenCV project. Does anyone know how to export the libopencv_java3.so file into my app build?
You have to install OpenCV Manager on your device.
And initiate manager like this
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_6, this, mLoaderCallback);
BaseLoaderCallback is
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {
@Override
public void onManagerConnected(int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS:
{
Log.i(TAG, "OpenCV loaded successfully");
} break;
default:
{
super.onManagerConnected(status);
} break;
}
}
};
See reference page
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