解决Android studio中找不到so文件的问题：java.lang.UnsatisfiedLinkError

表示我们不编译jni代码，直接从libs里面复制so库
文件路径：app\build.gradle

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"
 
    defaultConfig {
        applicationId "com.example.rust"
        minSdkVersion 21
        targetSdkVersion 23
        versionCode 1
        versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    sourceSets {
        main {
            jni.srcDirs = []
            jniLibs.srcDirs = ['libs']
        }
    }
}