Android Studio引入.so文件的正确姿势 以及调用.so 文件时报错has text relocations 解决

首先在src同级目录下创建libs目录讲需要的.so复制到这里效果如图

然后在app级别的build.gradle配置lib路径，效果如果

完整代码如下：

apply plugin: 'com.android.application'android {    compileSdkVersion 24    buildToolsVersion "25.0.1"    defaultConfig {        applicationId "com.liberation.idcarread"        minSdkVersion 15        targetSdkVersion 24        versionCode 1        versionName "1.0"        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"    }    buildTypes {        release {            minifyEnabled false            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'        }    }    task nativeLibsToJar(type: Zip, description: "create a jar archive of the native libs") {        destinationDir file("$projectDir/libs")        baseName "Native_Libs2"        extension "jar"        from fileTree(dir: "libs", include: "**/*.so")        into "lib"    }    tasks.withType(JavaCompile) {        compileTask -> compileTask.dependsOn(nativeLibsToJar)    }    sourceSets {        main {            jniLibs.srcDirs = ['libs']        }    }}dependencies {    compile fileTree(dir: 'libs', include: ['*.jar'])    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {        exclude group: 'com.android.support', module: 'support-annotations'    })    compile 'com.android.support:appcompat-v7:24.2.1'    testCompile 'junit:junit:4.12'}

至此配置完成点击sync即可正常使用。编译运行过程遇到*.so: has text relocations 说明编译.so文件时使用了较低版本sdk 版本 此时降低build.gradle的targetSdkVersion 版本为22以及以下即可 我们这里改为22 最终效果如下

运行时又出现一个异常

 **java.lang.UnsatisfiedLinkError: No implementation found for int com.liberation.idcarread.ivsign.IDCReaderSDK.wltInit(java.lang.String) (tried Java_com_liberation_idcarread_ivsign_IDCReaderSDK_wltInit and Java_com_liberation_idcarread_ivsign_IDCReaderSDK_wltInit__Ljava_lang_String_2)**

解决方法：按照官方Demo放好包名路径。包名一定要跟原来的一模一样负责无法调用！