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Configuring ProGuard Rules to Enable Obfuscation

Follow these steps to configure ProGuard rules that enable obfuscation.
  1. To enable obfuscation for any of your build types, define the setting in the relevant
    build.gradle
     file for your app.
    buildTypes {
    release {
        isMinifyEnabled = true
        proguardFiles(getDefaultProguardFile("proguard-android-optimize.txt"), "proguard-rules.pro")
    }
}
  2. If you are using ProGuard as an obfuscation tool in your app, add these rules to the
    proguard-rules.pro
     file.
    # OkHttp
-keepattributes Signature
-keepattributes *Annotation*
-dontwarn com.squareup.okhttp.**
-keep class com.squareup.okhttp.* { *; }
-dontwarn okio.**
  
# Acceptance Devices
-keep class io.mpos.** { *; }
-dontwarn io.mpos.**
-keep class com.visa.vac.tc.** {*;}
-keep class com.nimbusds.jose.** {*;}
-keep class org.bouncycastle.** {*;}

# Mastercard Sonic Branding 
-keep class com.mastercard.sonic.BuildConfig {*;}