无法从android应用程序项目加载存储在android库（aar）中的.so文件

Question

0。问题

我已经创建了一个Android库（aar），其中包含一些so文件。

在我的Android应用程序项目中成功加载aar文件后，我尝试从aar类加载so文件，但失败，并显示java.lang.UnsatisfiedLinkError。

[我认为，Android应用程序不是为了加载so文件而是在aar内部，而是查看了Android应用程序内部的lib文件夹。

（（我知道我可以直接在android应用程序中复制那些共享库，但我不想这样做）

1。创建Android库（aar）

build.gradle

    apply plugin: 'com.android.library'

    android {
        compileSdkVersion 29

        defaultConfig {
            minSdkVersion 21
            targetSdkVersion 29
            versionCode 1
            versionName "1.0"

            testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
            consumerProguardFiles 'consumer-rules.pro'

            externalNativeBuild {
                cmake {
                    cppFlags "-std=c++11"
                    abiFilters "armeabi-v7a", "arm64-v8a", "x86", "x86_64"
                }
            }

            packagingOptions {
                pickFirst 'lib/x86_64/libnanolcms.so'
                pickFirst 'lib/x86/libnanolcms.so'
                pickFirst 'lib/armeabi-v7a/libnanolcms.so'
                pickFirst 'lib/arm64-v8a/libnanolcms.so'
                pickFirst 'lib/x86_64/liblcms2.so'
                pickFirst 'lib/x86/liblcms2.so'
                pickFirst 'lib/armeabi-v7a/liblcms2.so'
                pickFirst 'lib/arm64-v8a/liblcms2.so'
            }
        }


        buildTypes {
            release {
                minifyEnabled false
                debuggable false
                proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
                jniDebuggable = true
            }
            debug {
                minifyEnabled false
                debuggable false
                jniDebuggable = true
                proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
            }
        }


        externalNativeBuild {
            cmake {
                version '3.6.0'
                path "src/main/jni/CMakeLists.txt"
            }
        }

        sourceSets {
            main {
                jniLibs.srcDirs = ['src/main/jnilibs']
                jni.srcDirs = [] //disable automatic ndk-build call
            }
        }
    }

    repositories {
        flatDir {
            dirs 'libs'
        }

        // to be able to compile opencv
        maven { url "https://jitpack.io" }
    }

    dependencies {
        implementation fileTree(include: ['*.jar','*.so'], dir: 'libs')
        implementation 'androidx.appcompat:appcompat:1.1.0'
        testImplementation 'junit:junit:4.13'
        androidTestImplementation 'androidx.test.ext:junit:1.1.1'
        androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
        implementation(name: 'openCV-3.3.1', ext: 'aar')

        implementation "com.getkeepsafe.relinker:relinker:1.4.0"
    }

来自android库项目的代码

   if (useReLinker) {
        ReLinker.recursively().log(logcatLogger).loadLibrary(CXColorcatchManager.getInstance().getWeakContext().get(), libraryName, new ReLinker.LoadListener() {
                @Override
                public void success() {
                    CXLogger.verbose("Library " + libraryName + " successfully loaded");
                    libraryLoaderListener.onLibraryLoaded(true);
                }
                @Override
                public void failure(Throwable t) {
                    CXLogger.verbose("Unable to load " + libraryName + " library \n");
                    libraryLoaderListener.onLibraryLoaded(false);
                }
            });

        } else {
            try {
                System.loadLibrary(libraryName);
                libraryLoaderListener.onLibraryLoaded(true);
            } catch (Exception e) {
                CXLogger.verbose("Unable to load " + libraryName + " library \n " + e);
                libraryLoaderListener.onLibraryLoaded(false);
            }
        }
    }

如下图所示，aar文件包含so文件。它们位于the documentation

之后的jni文件夹中，该文件夹是正确的文件夹

my-library.aar

2。 Android应用程序项目

我创建了一个Android应用程序项目，将aar文件添加为依赖项（工作正常）。我调用从aar文件创建的Singleton类，然后尝试使用System.loadlibrary()或Relinker从库类中加载so文件。

build.gradle

    apply plugin: 'com.android.application'

    android {
        compileSdkVersion 29
        defaultConfig {
            applicationId "com.colorix.spike.nano"
            minSdkVersion 21

            targetSdkVersion 29
            versionCode 1
            versionName "1.0"
            testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
        }
        buildTypes {
            release {
                minifyEnabled false
                proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
            }
        }
        compileOptions {
            sourceCompatibility JavaVersion.VERSION_1_8
            targetCompatibility JavaVersion.VERSION_1_8
        }

        sourceSets {
            main {
                jniLibs.srcDirs = ['src/main/jnilibs']
            }
        }
    }

    dependencies {
        implementation 'androidx.appcompat:appcompat:1.1.0'
        implementation 'com.google.android.material:material:1.0.0'
        implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
        testImplementation 'junit:junit:4.13'
        androidTestImplementation 'androidx.test:runner:1.3.0-alpha03'
        androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0-alpha03'

        // my library
        implementation files('libs/my_library.aar')
        implementation "com.getkeepsafe.relinker:relinker:1.4.0"
    }

不幸的是，在System.loadlibrary()中找不到库：java.lang.UnsatisfiedLinkError

使用Relinker，我使用recursive（）方法来检查每个文件夹：

    V/ReLinkerInstance: [LibraryLoadingTask.log()-32]: Loading the library normally failed: java.lang.UnsatisfiedLinkError: dalvik.system.PathClassLoader[DexPathList[[zip file "/data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk"],nativeLibraryDirectories=[/data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/lib/x86, /system/lib]]] couldn't find "libnanolcms.so"
        at java.lang.Runtime.loadLibrary0(Runtime.java:1012)
        at java.lang.System.loadLibrary(System.java:1669)
        at com.getkeepsafe.relinker.SystemLibraryLoader.loadLibrary(SystemLibraryLoader.java:24)
        at com.getkeepsafe.relinker.ReLinkerInstance.loadLibraryInternal(ReLinkerInstance.java:163)
        at com.getkeepsafe.relinker.ReLinkerInstance.access$000(ReLinkerInstance.java:31)
        at com.getkeepsafe.relinker.ReLinkerInstance$1.run(ReLinkerInstance.java:142)
        at java.lang.Thread.run(Thread.java:764)
    V/ReLinkerInstance: [LibraryLoadingTask.log()-32]: nanolcms (null) was not loaded normally, re-linking...
    V/ReLinkerInstance: [LibraryLoadingTask.log()-32]: Looking for lib/x86/libnanolcms.so in APK     /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    V/ReLinkerInstance: [LibraryLoadingTask.log()-32]: Looking for lib/armeabi-v7a/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    [LibraryLoadingTask.log()-32]: Looking for lib/armeabi/libnanolcms.so in APK /data/app    /com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    [LibraryLoadingTask.log()-32]: Looking for lib/x86/libnanolcms.so in APK /data/app    /com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    [LibraryLoadingTask.log()-32]: Looking for lib/armeabi-v7a/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    V/ReLinkerInstance: [LibraryLoadingTask.log()-32]: Looking for lib/armeabi/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    [LibraryLoadingTask.log()-32]: Looking for lib/x86/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    [LibraryLoadingTask.log()-32]: Looking for lib/armeabi-v7a/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    V/ReLinkerInstance: [LibraryLoadingTask.log()-32]: Looking for lib/armeabi/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    V/ReLinkerInstance: [LibraryLoadingTask.log()-32]: Looking for lib/x86/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    [LibraryLoadingTask.log()-32]: Looking for lib/armeabi-v7a/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    [LibraryLoadingTask.log()-32]: Looking for lib/armeabi/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    V/ReLinkerInstance: [LibraryLoadingTask.log()-32]: Looking for lib/x86/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    V/ReLinkerInstance: [LibraryLoadingTask.log()-32]: Looking for lib/armeabi-v7a/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    V/ReLinkerInstance: [LibraryLoadingTask.log()-32]: Looking for lib/armeabi/libnanolcms.so in APK /data/app/com.colorix.spike.nano-YmXglPRjs_msSVzvsySnZA==/base.apk...
    W/orix.spike.nan: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (light greylist, reflection)
    W/orix.spike.nan: Accessing hidden method Landroid/view /ViewGroup;->makeOptionalFitsSystemWindows()V (light greylist, reflection)
    V/ReLinkerInstance: [LibraryLoadingTask.failure()-54]: Unable to load nanolcms library 
如您所见，该库不在lib/<architecture/...中，而是在aar中，它位于jni文件夹中。

如果我了解android文档，则lib文件夹是android应用程序的文件夹，而不是android库（aar）的文件夹。

[如果有人知道如何不加载aar文件中的so文件，请告诉我。如果您需要更多信息，请告诉我。

解决方案（但我不想要）

我可以将.so文件复制到应用程序的jniLibs文件夹中。它将正常工作。但这不是我想要的。

0。问题我创建了一个包含一些so文件的Android库（aar）。在我的Android应用程序项目中成功加载aar文件后，我尝试加载so文件（从aar ...

Answer 1

在我看来，您无法在aar库中加载so文件。