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！