CODEWITHSUNDEEP
androidproguard
sandhya sasane
sandhya sasane

Reputation: 1352

Pro-guard Obfuscation not working in android studio

Using Latest Android Studio and having updated all platform ( OsX) :

Build.gradle :

android {
compileSdkVersion 26
defaultConfig {
    applicationId "com.xxxxxxlxxxxxx.apps.firebase"
    minSdkVersion 16
    targetSdkVersion 26
    versionCode 1
    versionName "1.0"
    testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
    release {
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}
}

dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support:design:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.firebase:firebase-jobdispatcher:0.8.5'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

Proguard-rules.pro :

-keep public class OpenSource

As you can see proguard is enabled and rules also given for just keeping OpenSource class. Still when i build its apk / signed apk. And uses following commands on apk file :

  1. Unzip apk
  2. sh Dex2jar.sh classes.dex
  3. And by opening output jar file with Jd-GUI
  4. I get all all my classes right from MainActivity and rest all, as it is. There is no Obfuscation seen working

It would be very nice to have your suggestions on it. Thanks.

Upvotes: 4

Views: 9741

Answers (3)

DaMat
DaMat

Reputation: 31

In case you think you are doing everything right (default proguard-rules, minifyEnabled = true, etc.) and yet classes and methods are not being obfuscated, please check that the build variant you are trying to obfuscate is NOT DEBUGGABLE (apparently debuggable builds are not obfuscated properly)

Upvotes: 0

Lahiru Chandima
Lahiru Chandima

Reputation: 24128

Newer gradle plugin versions don't use proguard. It uses R8 compiler instead.

When you build you project using Android Gradle plugin 3.4.0 or higher, the plugin no longer uses ProGuard to perform compile-time code optimization. Instead, the plugin works with the R8 compiler to handle the following compile-time tasks:

https://developer.android.com/studio/build/shrink-code

If you want to use proguard (in release build), add below to gradle.properties

android.enableR8=false

and use following in build.gradle.

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

Upvotes: 0

Aditya
Aditya

Reputation: 3673

To enable ProGuard in Android Studio. Below is the sample how to enable default ProGuard in Android Studio.

1) Go to the build.gradle file of app

2) enable the proguard minifyEnabled true and useProguard true

3) enable shrinkResources true to reduce the APK size by shrinking resources.

4) proguardFiles getDefaultProguardFile('proguard-android.txt') to enable the default one. If you want to use your own proguard file then use the below rules.

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

    debug {
        debuggable true
        useProguard true
        minifyEnabled true
        shrinkResources true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}

Upvotes: 12

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