how to protect our app by using obfuscation[proguard] in android studio

Question

I am searching for protecting my app by using proguard but I didnt find proper answer how to protect my app. If any body know how to protect our app using obfuscation in proguard help me.

Answer 1

If you are using Android Studio

1. Go to build.gradle file of your app
2. Check for below snippet in the file

Put minifyEnabled as 'true';

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

3. In proguard-rules.pro add excpetions and rules matching your app.

Eg

-keep public class * extends android.support.v7.app.ActionBarActivity
-keep public class * extends your.package.name.SomeClass
-keep class android.support.v7.** { *; }
-keep interface android.support.v7.** { *; }