How to encode package and function names in Android?

Question

I want to change all package and function names to make my app harder to analyze. I reversed other apk and found what I want. But I don't know how to do like this. Please check attached image.

Do I have to use any other tool or change this manually? Please give me a hint. Thanks!

Answer 1

In build.gradle of app module, enable minify to shorten and obfuscate your codes.

buildTypes {
    release {
        // your code will be shortened and obfuscated by R8 compiler
        // in the release build of your app.
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
    }
}

See also : https://developer.android.com/build/shrink-code