I've took OpenCV Library and exported it as .aar library. Now you can easily use OpenCV in a Gradle / Android Studio project.

I've uploaded the .aar in my maven repository. You only need to add following lines to your build.gradle to add the dependency:

repositories {
    maven { url  "https://dl.bintray.com/blazei/maven" }
}

dependencies {
    implementation 'org.opencv:opencv-android:3.+'
}

See download badge for latest version

OpenCV license license