gstreamer/playback/player/android/app/build.gradle

apply plugin: 'com.android.application'

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"

    defaultConfig {
        applicationId "org.freedesktop.gstreamer.play"
        minSdkVersion 9
        targetSdkVersion 22

        ndk {
            moduleName "gstplayer"
        }
    }

    sourceSets {
        main {
            // GStreamer will generate these files.
            java {
                srcDir 'src/main/jni/src'
            }
            assets {
                srcDir 'src/main/jni/assets'
            }

            //Tell Gradle where to put the compiled shared library
            jniLibs.srcDir 'src/main/libs'

            //disable automatic ndk-build call
            jni.srcDirs = [];
        }
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
        }
    }

    // Thank you http://stackoverflow.com/q/28878689/375209
    tasks.withType(JavaCompile) {
        compileTask -> compileTask.dependsOn ndkBuild
    }

    task ndkBuild(type: Exec) {
        Properties properties = new Properties()
        properties.load(project.rootProject.file('local.properties').newDataInputStream())
        def ndkDir = properties.getProperty('ndk.dir')
        environment GSTREAMER_ROOT_ARM: properties.getProperty('gstreamer.arm.dir')
        environment GSTREAMER_ROOT_ARMV7: properties.getProperty('gstreamer.armv7.dir')
        environment GSTREAMER_ROOT_X86: properties.getProperty('gstreamer.x86.dir')

        def ndkExtraPath = properties.getProperty('ndk.extraPath')
        if (! "".equalsIgnoreCase(ndkExtraPath)) {
            environment PATH: "${System.getenv("PATH")}${File.pathSeparator}${ndkExtraPath}"
        }

        commandLine "${ndkDir}/ndk-build", '-C', file('src/main/jni').absolutePath //, 'V=1' // Enable V=1 for debugging messages.
    }
}

dependencies {
    compile 'com.android.support:appcompat-v7:22.1.1'
    compile "com.android.support:recyclerview-v7:22.1.1"
    compile "com.android.support:support-annotations:22.1.1"
}