Android-enable-proguard.java

buildTypes {
    debug {
        minifyEnabled true
        shrinkResources true
        useProguard true
        debuggable true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
 
    release {
        minifyEnabled true   // Obfuscate and minify codes 
        shrinkResources true // Remove unused resources
        useProguard true     // Remove unused codes
        debuggable false
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
    }
}