Proguard setting for Android Architecture Components

android-architecture-components-proguard.txt

## Android architecture components: Lifecycle
# LifecycleObserver's empty constructor is considered to be unused by proguard
-keepclassmembers class * implements android.arch.lifecycle.LifecycleObserver {
    <init>(...);
}
# ViewModel's empty constructor is considered to be unused by proguard
-keepclassmembers class * extends android.arch.lifecycle.ViewModel {
    <init>(...);
}
# keep Lifecycle State and Event enums values
-keepclassmembers class android.arch.lifecycle.Lifecycle$State { *; }
-keepclassmembers class android.arch.lifecycle.Lifecycle$Event { *; }
# keep methods annotated with @OnLifecycleEvent even if they seem to be unused
# (Mostly for LiveData.LifecycleBoundObserver.onStateChange(), but who knows)
-keepclassmembers class * {
    @android.arch.lifecycle.OnLifecycleEvent *;
}

-keepclassmembers class * implements android.arch.lifecycle.LifecycleObserver {
    <init>(...);
}

-keep class * implements android.arch.lifecycle.LifecycleObserver {
    <init>(...);
}
-keepclassmembers class android.arch.** { *; }
-keep class android.arch.** { *; }
-dontwarn android.arch.**

Also please add this one:

-keep class * implements android.arch.lifecycle.GeneratedAdapter {<init>(...);}

For proguard, please add the following lines to your proguard file. (This won't be necessary when 1.0.0 ships)
https://developer.android.com/jetpack/docs/release-notes