build.gradle

apply plugin: 'com.android.library'


android {
    compileSdk 28

    defaultConfig {
        minSdk 15
        targetSdk 28

        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        consumerProguardFiles "consumer-rules.pro"
        externalNativeBuild {
            cmake {
                arguments '-DANDROID_PLATFORM=android-21', '-DANDROID_STL=c++_shared', "-DANDROID_TOOLCHAIN=clang"
                abiFilters 'armeabi-v7a', 'arm64-v8a'
                cppFlags "-std=c++11"
            }
        }
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    externalNativeBuild {
        cmake {
            path "src/main/cpp/CMakeLists.txt"
            version "3.22.1"
        }
    }
    sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }
    ndkVersion '25.1.8937393'
}

dependencies {

    implementation 'com.android.support:appcompat-v7:28.0.0'
    testImplementation 'junit:junit:4.13.2'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

def FD_CXX_LIB = [
        [
                'src' : 'https://bj.bcebos.com/fastdeploy/dev/android/fastdeploy-android-with-text-0.0.0-shared.tgz',
                'dest': 'libs',
                'name': 'fastdeploy-android-latest-shared-dev'
        ]
]

task downloadAndExtractLibs(type: DefaultTask) {
    doFirst {
        println "[INFO] Downloading and extracting fastdeploy android c++ lib ..."
    }
    doLast {
        String cachePath = "cache"
        if (!file("${cachePath}").exists()) {
            mkdir "${cachePath}"
        }

        FD_CXX_LIB.eachWithIndex { lib, index ->

            String[] libPaths = lib.src.split("/")
            String sdkName = lib.name
            String libName = libPaths[libPaths.length - 1]
            libName = libName.substring(0, libName.indexOf("tgz") - 1)
            String cacheName = cachePath + "/" + "${libName}.tgz"

            String libDir = lib.dest + "/" + libName
            String sdkDir = lib.dest + "/" + sdkName

            boolean copyFiles = false
            if (!file("${sdkDir}").exists()) {
                // Download lib and rename to sdk name later.
                if (!file("${cacheName}").exists()) {
                    println "[INFO] Downloading ${lib.src} -> ${cacheName}"
                    ant.get(src: lib.src, dest: file("${cacheName}"))
                }
                copyFiles = true
            }

            if (copyFiles) {
                println "[INFO] Taring ${cacheName} -> ${libDir}"
                copy { from(tarTree("${cacheName}")) into("${lib.dest}") }
                if (!libName.equals(sdkName)) {
                    if (file("${sdkDir}").exists()) {
                        delete("${sdkDir}")
                        println "[INFO] Remove old ${sdkDir}"
                    }
                    mkdir "${sdkDir}"
                    println "[INFO] Coping ${libDir} -> ${sdkDir}"
                    copy { from("${libDir}") into("${sdkDir}") }
                    delete("${libDir}")
                    println "[INFO] Removed ${libDir}"
                    println "[INFO] Update ${sdkDir} done!"
                }
            } else {
                println "[INFO] ${sdkDir} already exists!"
                println "[WARN] Please delete ${cacheName} and ${sdkDir} " +
                        "if you want to UPDATE ${sdkName} c++ lib. Then, rebuild this sdk."
            }
        }
    }
}

preBuild.dependsOn downloadAndExtractLibs